blocks|key|1539254|text|以下代码适用于我：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1539255|Intent+cameraIntent+=+new+Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent,+2);|code-block|syntax|javascript|1539256|结果如下：|1539257|protected+void+onActivityResult(int+requestCode,+int+resultCode,+Intent+imageReturnedIntent)
{+
++++super.onActivityResult(requestCode,+resultCode,+imageReturnedIntent);

++++if(resultCode+==+RESULT_OK)
++++{
++++++++Uri+selectedImage+=+imageReturnedIntent.getData();
++++++++ImageView+photo+=+(ImageView)+findViewById(R.id.add_contact_label_photo);
++++++++Bitmap+mBitmap+=+null;
++++++++try
++++++++{
++++++++++++mBitmap+=+Media.getBitmap(this.getContentResolver(),+selectedImage);
++++++++}
++++++++catch+(IOException+e)
++++++++{
++++++++++++e.printStackTrace();
++++++++}
++++}
}|1539258|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

The following code works for me:

<pre><code>Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, 2);
</code></pre>

And here is the result:

<pre><code>protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent)
{ 
 super.onActivityResult(requestCode, resultCode, imageReturnedIntent);

 if(resultCode == RESULT_OK)
 {
 Uri selectedImage = imageReturnedIntent.getData();
 ImageView photo = (ImageView) findViewById(R.id.add_contact_label_photo);
 Bitmap mBitmap = null;
 try
 {
 mBitmap = Media.getBitmap(this.getContentResolver(), selectedImage);
 }
 catch (IOException e)
 {
 e.printStackTrace();
 }
 }
}
</code></pre>

blocks|key|3945012|text|默认的Android相机应用程序仅在返回的Intent中传回缩略图时才返回非空intent。如果您传递带有要写入的URI的EXTRA_OUTPUT，它将返回一个null意图，图片位于您传入的URI中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3945013|你可以通过查看GitHub上相机应用的源代码来验证这一点：|3945014|3945015|https://github.com/android/platform_packages_apps_camera/blob/gingerbread-release/src/com/android/camera/Camera.java#L1186|unordered-list-item|3945016|3945017|包newExtras+=新包()；if+(mCropValue.equals(“mCropValue.equals”)){+newExtras.putString("circleCrop"，"true")；}+if+(mSaveUri+!=+null)+{+newExtras.putParcelable(MediaStore.EXTRA_OUTPUT，mSaveUri)；}+else+{+newExtras.putBoolean("return-data"，true)；}|3945018|我猜你要么以某种方式传入了EXTRA_OUTPUT，要么你手机上的相机应用程序的工作方式不同。|3945019|entityMap|0|LINK|mutability|MUTABLE|url^0|1P|C|28|4|0|0|0|0|3E|0|0|0|0|D|C|0^^$0|@$1|2|3|4|5|6|7|X|8|@$9|Y|A|Z|B|C]|$9|10|A|11|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|12|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|13|8|@]|D|@]|E|$]]|$1|I|3|J|5|K|7|14|8|@]|D|@$9|15|A|16|1|17]]|E|$]]|$1|L|3|-4|5|6|7|18|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|19|8|@]|D|@]|E|$]]|$1|O|3|P|5|6|7|1A|8|@$9|1B|A|1C|B|C]]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|1D|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|J]]]]

The default Android camera application returns a non-null intent only when passing back a thumbnail in the returned Intent. If you pass <code>EXTRA_OUTPUT</code> with a URI to write to, it will return a <code>null</code> intent and the picture is in the URI that you passed in.

You can verify this by looking at the camera app's source code on GitHub:

<ul>
<li><a href="https://github.com/android/platform_packages_apps_camera/blob/gingerbread-release/src/com/android/camera/Camera.java#L1186">https://github.com/android/platform_packages_apps_camera/blob/gingerbread-release/src/com/android/camera/Camera.java#L1186</a>

<pre><code>Bundle newExtras = new Bundle();
if (mCropValue.equals("circle")) {
 newExtras.putString("circleCrop", "true");
}
if (mSaveUri != null) {
 newExtras.putParcelable(MediaStore.EXTRA_OUTPUT, mSaveUri);
} else {
 newExtras.putBoolean("return-data", true);
}
</code></pre></li>
</ul>

I would guess that you're either passing in <code>EXTRA_OUTPUT</code> somehow, or the camera app on your phone works differently.

blocks|key|1535296|text|可能是因为你有这样的东西？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1535297|Intent+takePictureIntent+=+new+Intent(MediaStore.ACTION_IMAGE_CAPTURE);++++++++++++++++++++++++
Uri+fileUri+=++CommonUtilities.getTBCameraOutputMediaFileUri();++++++++++++++++++
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,+fileUri);++++++++++++++++++++++++
startActivityForResult(takePictureIntent,+2);|code-block|syntax|javascript|1535298|但是，您不能将额外的输出放入intent，因为这样数据就会进入URI，而不是数据变量。出于这个原因，您必须去掉中间的两行，这样您就有了|1535299|Intent+takePictureIntent+=+new+Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(takePictureIntent,+2);|1535300|这就是给我带来问题的原因，希望这能有所帮助。|1535301|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Probably because you had something like this?

<pre><code>Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
Uri fileUri = CommonUtilities.getTBCameraOutputMediaFileUri(); 
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); 
startActivityForResult(takePictureIntent, 2);
</code></pre>

However you must not put the extra output into the intent, because then the data goes into the URI instead of the data variable. For that reason, you have to take the two lines in the middle out, so that you have

<pre><code>Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(takePictureIntent, 2);
</code></pre>

That´s what caused the problem for me, hope that helped.

blocks|key|1535307|text|我找到了一个简单的答案。它成功了！！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1535308|private+void+openCameraForResult(int+requestCode){
++++Intent+photo+=+new+Intent(MediaStore.ACTION_IMAGE_CAPTURE);
++++Uri+uri++=+Uri.parse("file:///sdcard/photo.jpg");
++++photo.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,+uri);
++++startActivityForResult(photo,requestCode);
}

if+(requestCode+==+CAMERA_REQUEST_CODE)+{
++++++++if+(resultCode+==+Activity.RESULT_OK)+{
++++++++++++File+file+=+new+File(Environment.getExternalStorageDirectory().getPath(),+"photo.jpg");
++++++++++++Uri+uri+=+Uri.fromFile(file);
++++++++++++Bitmap+bitmap;
++++++++++++try+{
++++++++++++++++bitmap+=+MediaStore.Images.Media.getBitmap(getContentResolver(),+uri);
++++++++++++++++bitmap+=+cropAndScale(bitmap,+300);+//+if+you+mind+scaling
++++++++++++++++profileImageView.setImageBitmap(bitmap);
++++++++++++}+catch+(FileNotFoundException+e)+{
++++++++++++++++//+TODO+Auto-generated+catch+block
++++++++++++++++e.printStackTrace();
++++++++++++}+catch+(IOException+e)+{
++++++++++++++++//+TODO+Auto-generated+catch+block
++++++++++++++++e.printStackTrace();
++++++++++++}

++++++++}
++++}|code-block|syntax|javascript|1535309|如果要裁剪和缩放此图像|1535310|public+static++Bitmap+cropAndScale+(Bitmap+source,+int+scale){
++++int+factor+=+source.getHeight()+<=+source.getWidth()+?+source.getHeight():+source.getWidth();
++++int+longer+=+source.getHeight()+>=+source.getWidth()+?+source.getHeight():+source.getWidth();
++++int+x+=+source.getHeight()+>=+source.getWidth()+?0:(longer-factor)/2;
++++int+y+=+source.getHeight()+<=+source.getWidth()+?0:(longer-factor)/2;
++++source+=+Bitmap.createBitmap(source,+x,+y,+factor,+factor);
++++source+=+Bitmap.createScaledBitmap(source,+scale,+scale,+false);
++++return+source;
}|1535311|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I found an easy answer. it works!!

<pre><code>private void openCameraForResult(int requestCode){
 Intent photo = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
 Uri uri = Uri.parse("file:///sdcard/photo.jpg");
 photo.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, uri);
 startActivityForResult(photo,requestCode);
}

if (requestCode == CAMERA_REQUEST_CODE) {
 if (resultCode == Activity.RESULT_OK) {
 File file = new File(Environment.getExternalStorageDirectory().getPath(), "photo.jpg");
 Uri uri = Uri.fromFile(file);
 Bitmap bitmap;
 try {
 bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
 bitmap = cropAndScale(bitmap, 300); // if you mind scaling
 profileImageView.setImageBitmap(bitmap);
 } catch (FileNotFoundException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 } catch (IOException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }

 }
 }
</code></pre>

if you would like to crop and scale this image 

<pre><code>public static Bitmap cropAndScale (Bitmap source, int scale){
 int factor = source.getHeight() &lt;= source.getWidth() ? source.getHeight(): source.getWidth();
 int longer = source.getHeight() &gt;= source.getWidth() ? source.getHeight(): source.getWidth();
 int x = source.getHeight() &gt;= source.getWidth() ?0:(longer-factor)/2;
 int y = source.getHeight() &lt;= source.getWidth() ?0:(longer-factor)/2;
 source = Bitmap.createBitmap(source, x, y, factor, factor);
 source = Bitmap.createScaledBitmap(source, scale, scale, false);
 return source;
}
</code></pre>

blocks|key|1835379|text|访问摄像头、拍照并在安卓上设置ImageView|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1835380|对于棉花糖，您必须使用Uri+file+=+Uri.fromFile(getOutputMediaFile());。|offset|length|style|CODE|1835381|使用下面的链接获取路径|1835382|https://androidkennel.org/android-camera-access-tutorial/|1835383|entityMap|0|LINK|mutability|MUTABLE|url^0|0|B|1A|0|0|0|1L|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@$D|U|E|V|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|W|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|X|8|@]|9|@$D|Y|E|Z|1|10]]|A|$]]|$1|L|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|K]]]]

To Access the Camera and take pictures and set ImageView on Android 

You have to use <code>Uri file = Uri.fromFile(getOutputMediaFile());</code> for marshmallow.

Use below link to get path

<a href="https://androidkennel.org/android-camera-access-tutorial/" rel="nofollow noreferrer">https://androidkennel.org/android-camera-access-tutorial/</a>

blocks|key|1539322|text|避免空意图问题的简单工作摄像头应用程序|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1539323|android+-此回复中包含的所有更改的代码；关闭教程|offset|length|style|BOLD|1539324|我在这个问题上花了很多时间，所以我决定创建一个帐户，并与您分享我的成果。|1539325|官方的android教程"Taking+Photos+Simply"被证明并不完全符合它的承诺。这里提供的代码在我的设备上不起作用:一台运行安卓4.4.2+/+KitKat+/+S4+Level+19的三星Galaxy+API+-I9195。|1539326|我发现主要问题在于捕获照片时调用的方法中的以下代码行(本教程中的dispatchTakePictureIntent)：|CODE|1539327|takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,+photoURI);|code-block|syntax|javascript|1539328|这导致随后由onActivityResult捕获的意图为空。|1539329|为了解决这个问题，我从这里的早期回复和github上的一些有用的帖子中获得了很多灵感(主要是this+one+by+deepwinter+-感谢他；你可能也想看看他在一个密切相关的post上的回复)。|1539330|遵循这些令人愉快的建议，我选择了删除前面提到的putExtra行的策略，并在onActivityResult()方法中执行相应的操作，即从相机取回拍摄的照片。获取与图片相关的位图的关键代码行是：|1539331|++++++++Uri+uri+=+intent.getData();
++++++++Bitmap+bitmap+=+null;
++++++++try+{
++++++++++++bitmap+=+MediaStore.Images.Media.getBitmap(this.getContentResolver(),+uri);
++++++++}+catch+(IOException+e)+{
++++++++++++e.printStackTrace();
++++++++}|1539332|我创建了一个模范的应用程序，它只有能力拍摄照片，保存在SD卡上，并显示它。我认为这可能会对遇到这个问题的人有所帮助，因为目前的帮助建议大多是指相当广泛的github帖子，这些帖子做了有问题的事情，但对于像我这样的新手来说，监督起来并不容易。关于Android+Studio在创建新项目时默认创建的文件系统，我只需要更改三个文件：|1539333|activity_main.xml：|1539334|<?xml+version="1.0"+encoding="utf-8"?>
<LinearLayout+xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.android.simpleworkingcameraapp.MainActivity">

<Button
++++android:layout_width="wrap_content"
++++android:layout_height="wrap_content"
++++android:onClick="takePicAndDisplayIt"
++++android:text="Take+a+pic+and+display+it."+/>

<ImageView
++++android:id="@%2Bid/image1"
++++android:layout_width="match_parent"
++++android:layout_height="200dp"+/>

</LinearLayout>|1539335|MainActivity.java：|1539336|package+com.example.android.simpleworkingcameraapp;

import+android.content.Intent;
import+android.graphics.Bitmap;
import+android.media.Image;
import+android.net.Uri;
import+android.os.Environment;
import+android.provider.MediaStore;
import+android.support.v7.app.AppCompatActivity;
import+android.os.Bundle;
import+android.util.Log;
import+android.view.View;
import+android.widget.ImageView;
import+android.widget.Toast;

import+java.io.File;
import+java.io.IOException;
import+java.text.SimpleDateFormat;
import+java.util.Date;

public+class+MainActivity+extends+AppCompatActivity+{

private+ImageView+image;
static+final+int+REQUEST_TAKE_PHOTO+=+1;
String+mCurrentPhotoPath;

@Override
protected+void+onCreate(Bundle+savedInstanceState)+{
++++super.onCreate(savedInstanceState);
++++setContentView(R.layout.activity_main);
++++image+=+(ImageView)+findViewById(R.id.image1);
}

//+copied+from+the+android+development+pages;+just+added+a+Toast+to+show+the+storage+location
private+File+createImageFile()+throws+IOException+{
++++//+Create+an+image+file+name
++++String+timeStamp+=+new+SimpleDateFormat("yyyyMMdd_HHmm").format(new+Date());
++++String+imageFileName+=+"JPEG_"+%2B+timeStamp+%2B+"_";
++++File+storageDir+=+getExternalFilesDir(Environment.DIRECTORY_PICTURES);
++++File+image+=+File.createTempFile(
++++++++++++imageFileName,++/*+prefix+*/
++++++++++++".jpg",+++++++++/*+suffix+*/
++++++++++++storageDir++++++/*+directory+*/
++++);

++++//+Save+a+file:+path+for+use+with+ACTION_VIEW+intents
++++mCurrentPhotoPath+=+image.getAbsolutePath();
++++Toast.makeText(this,+mCurrentPhotoPath,+Toast.LENGTH_LONG).show();
++++return+image;
}

public+void+takePicAndDisplayIt(View+view)+{
++++Intent+intent+=+new+Intent(MediaStore.ACTION_IMAGE_CAPTURE);
++++if+(intent.resolveActivity(getPackageManager())+!=+null)+{
++++++++File+file+=+null;
++++++++try+{
++++++++++++file+=+createImageFile();
++++++++}+catch+(IOException+ex)+{
++++++++++++//+Error+occurred+while+creating+the+File
++++++++}

++++++++startActivityForResult(intent,+REQUEST_TAKE_PHOTO);
++++}
}

@Override
protected+void+onActivityResult(int+requestCode,+int+resultcode,+Intent+intent)+{
++++if+(requestCode+==+REQUEST_TAKE_PHOTO+&&+resultcode+==+RESULT_OK)+{
++++++++Uri+uri+=+intent.getData();
++++++++Bitmap+bitmap+=+null;
++++++++try+{
++++++++++++bitmap+=+MediaStore.Images.Media.getBitmap(this.getContentResolver(),+uri);
++++++++}+catch+(IOException+e)+{
++++++++++++e.printStackTrace();
++++++++}
++++++++image.setImageBitmap(bitmap);
++++}
}
}|1539337|AndroidManifest.xml：|1539338|<?xml+version="1.0"+encoding="utf-8"?>
<manifest+xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.simpleworkingcameraapp">



<uses-feature
++++android:name="android.hardware.camera"
++++android:required="true"+/>
<uses-permission+android:name="android.permission.WRITE_EXTERNAL_STORAGE"+/>++
<uses-permission+android:name="android.permission.CAMERA"+/>


<application
++++android:allowBackup="true"
++++android:icon="@mipmap/ic_launcher"
++++android:label="@string/app_name"
++++android:roundIcon="@mipmap/ic_launcher_round"
++++android:supportsRtl="true"
++++android:theme="@style/AppTheme">
++++<activity+android:name=".MainActivity">
++++++++<intent-filter>
++++++++++++<action+android:name="android.intent.action.MAIN"+/>

++++++++++++<category+android:name="android.intent.category.LAUNCHER"+/>
++++++++</intent-filter>
++++</activity>
</application>

</manifest>|1539339|请注意，我为这个问题找到的解决方案也简化了android清单文件:不再需要android教程中建议的添加提供程序方面的更改，因为我在java代码中没有使用任何更改。因此，只有几行关于权限的标准行-mostly必须添加到清单文件中。|1539340|另外值得一提的是，Android+Studio的自动导入可能无法处理java.text.SimpleDateFormat和java.util.Date。我必须手动导入这两个。|1539341|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/training/camera/photobasics.html|1|https://github.com/deepwinter/AndroidCameraTester/blob/master/src/com/example/cameratester/MainActivity.java|2|https://stackoverflow.com/questions/1910608/android-action-image-capture-intent^0|0|Q|2|0|0|C|M|0|0|W|P|0|0|6|G|0|1A|M|1|2I|4|2|0|N|8|0|0|0|0|0|0|0|0|0|0|Y|Q|1P|E|0^^$0|@$1|2|3|4|5|6|7|1V|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1W|8|@$D|1X|E|1Y|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|20|8|@]|9|@$D|21|E|22|1|23]]|A|$]]|$1|L|3|M|5|6|7|24|8|@$D|25|E|26|F|N]]|9|@]|A|$]]|$1|O|3|P|5|Q|7|27|8|@]|9|@]|A|$R|S]]|$1|T|3|U|5|6|7|28|8|@$D|29|E|2A|F|N]]|9|@]|A|$]]|$1|V|3|W|5|6|7|2B|8|@]|9|@$D|2C|E|2D|1|2E]|$D|2F|E|2G|1|2H]]|A|$]]|$1|X|3|Y|5|6|7|2I|8|@$D|2J|E|2K|F|N]]|9|@]|A|$]]|$1|Z|3|10|5|Q|7|2L|8|@]|9|@]|A|$R|S]]|$1|11|3|12|5|6|7|2M|8|@]|9|@]|A|$]]|$1|13|3|14|5|6|7|2N|8|@]|9|@]|A|$]]|$1|15|3|16|5|Q|7|2O|8|@]|9|@]|A|$R|S]]|$1|17|3|18|5|6|7|2P|8|@]|9|@]|A|$]]|$1|19|3|1A|5|Q|7|2Q|8|@]|9|@]|A|$R|S]]|$1|1B|3|1C|5|6|7|2R|8|@]|9|@]|A|$]]|$1|1D|3|1E|5|Q|7|2S|8|@]|9|@]|A|$R|S]]|$1|1F|3|1G|5|6|7|2T|8|@]|9|@]|A|$]]|$1|1H|3|1I|5|6|7|2U|8|@$D|2V|E|2W|F|N]|$D|2X|E|2Y|F|N]]|9|@]|A|$]]|$1|1J|3|-4|5|6|7|2Z|8|@]|9|@]|A|$]]]|1K|$1L|$5|1M|1N|1O|A|$1P|1Q]]|1R|$5|1M|1N|1O|A|$1P|1S]]|1T|$5|1M|1N|1O|A|$1P|1U]]]]

<h2>Simple working camera app avoiding the null intent problem</h2>

- all changed code included in this reply; close to android tutorial

I've been spending plenty of time on this issue, so I decided to create an account and share my outcomes with you.

The official android tutorial <a href="https://developer.android.com/training/camera/photobasics.html" rel="noreferrer">"Taking Photos Simply"</a> turned out to not quite hold what it promised.
The code provided there did not work on my device: a Samsung Galaxy S4 Mini GT-I9195 running android version 4.4.2 / KitKat / API Level 19. 

I figured out that the main problem was the following line in the method invoked when capturing the photo (<code>dispatchTakePictureIntent</code> in the tutorial):

<pre><code>takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
</code></pre>

It resulted in the intent subsequently catched by <code>onActivityResult</code> being null.

To solve this problem, I pulled much inspiration out of earlier replies here and some helpful posts on github (mostly <a href="https://github.com/deepwinter/AndroidCameraTester/blob/master/src/com/example/cameratester/MainActivity.java" rel="noreferrer">this one by deepwinter</a> - big thanks to him; you might want to check out his reply on a closely related <a href="https://stackoverflow.com/questions/1910608/android-action-image-capture-intent">post</a> as well).

Following these pleasant pieces of advice, I chose the strategy of deleting the mentioned <code>putExtra</code> line and doing the corresponding thing of getting back the taken picture from the camera within the onActivityResult() method instead.
The decisive lines of code to get back the bitmap associated with the picture are:

<pre><code> Uri uri = intent.getData();
 Bitmap bitmap = null;
 try {
 bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), uri);
 } catch (IOException e) {
 e.printStackTrace();
 }
</code></pre>

I created an exemplary app which just has the ability to take a picture, save it on the SD card and display it. 
I think this might be helpful to people in the same situation as me when I stumbled on this issue, since the current help suggestions mostly refer to rather extensive github posts which do the thing in question but aren't too easy to oversee for newbies like me.
With respect to the file system Android Studio creates per default when creating a new project, I just had to change three files for my purpose:

activity_main.xml :

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.android.simpleworkingcameraapp.MainActivity"&gt;

&lt;Button
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:onClick="takePicAndDisplayIt"
 android:text="Take a pic and display it." /&gt;

&lt;ImageView
 android:id="@+id/image1"
 android:layout_width="match_parent"
 android:layout_height="200dp" /&gt;

&lt;/LinearLayout&gt;
</code></pre>

MainActivity.java :

<pre><code>package com.example.android.simpleworkingcameraapp;

import android.content.Intent;
import android.graphics.Bitmap;
import android.media.Image;
import android.net.Uri;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class MainActivity extends AppCompatActivity {

private ImageView image;
static final int REQUEST_TAKE_PHOTO = 1;
String mCurrentPhotoPath;

@Override
protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 image = (ImageView) findViewById(R.id.image1);
}

// copied from the android development pages; just added a Toast to show the storage location
private File createImageFile() throws IOException {
 // Create an image file name
 String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmm").format(new Date());
 String imageFileName = "JPEG_" + timeStamp + "_";
 File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
 File image = File.createTempFile(
 imageFileName, /* prefix */
 ".jpg", /* suffix */
 storageDir /* directory */
 );

 // Save a file: path for use with ACTION_VIEW intents
 mCurrentPhotoPath = image.getAbsolutePath();
 Toast.makeText(this, mCurrentPhotoPath, Toast.LENGTH_LONG).show();
 return image;
}

public void takePicAndDisplayIt(View view) {
 Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
 if (intent.resolveActivity(getPackageManager()) != null) {
 File file = null;
 try {
 file = createImageFile();
 } catch (IOException ex) {
 // Error occurred while creating the File
 }

 startActivityForResult(intent, REQUEST_TAKE_PHOTO);
 }
}

@Override
protected void onActivityResult(int requestCode, int resultcode, Intent intent) {
 if (requestCode == REQUEST_TAKE_PHOTO &amp;&amp; resultcode == RESULT_OK) {
 Uri uri = intent.getData();
 Bitmap bitmap = null;
 try {
 bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), uri);
 } catch (IOException e) {
 e.printStackTrace();
 }
 image.setImageBitmap(bitmap);
 }
}
}
</code></pre>

AndroidManifest.xml :

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.simpleworkingcameraapp"&gt;


&lt;!--only added paragraph--&gt;
&lt;uses-feature
 android:name="android.hardware.camera"
 android:required="true" /&gt;
&lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /&gt; &lt;!-- only crucial line to add; for me it still worked without the other lines in this paragraph --&gt;
&lt;uses-permission android:name="android.permission.CAMERA" /&gt;


&lt;application
 android:allowBackup="true"
 android:icon="@mipmap/ic_launcher"
 android:label="@string/app_name"
 android:roundIcon="@mipmap/ic_launcher_round"
 android:supportsRtl="true"
 android:theme="@style/AppTheme"&gt;
 &lt;activity android:name=".MainActivity"&gt;
 &lt;intent-filter&gt;
 &lt;action android:name="android.intent.action.MAIN" /&gt;

 &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
 &lt;/intent-filter&gt;
 &lt;/activity&gt;
&lt;/application&gt;

&lt;/manifest&gt;
</code></pre>

Note that the solution I found for the problem also led to a simplification of the android manifest file: the changes suggested by the android tutorial in terms of adding a provider are no longer needed since I am not making use of any in my java code. Hence, only few standard lines -mostly regarding permissions- had to be added to the manifest file.

It might additionally be valuable to point out that Android Studio's autoimport may not be capable of handling <code>java.text.SimpleDateFormat</code> and <code>java.util.Date</code>. I had to import both of them manually.

blocks|key|3945198|text|当我们从安卓的摄像头捕捉到图像时，Uri或data.getdata()就会变成空的。我们有两个解决方案来解决这个问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3945199|3945200|从位图图像检索Uri路径|ordered-list-item|3945201|从光标检索Uri路径。|3945202|3945203|这就是如何从位图图像中检索Uri。首先通过意图捕获图像，这两种方法都是相同的：|3945204|//+Capture+Image
captureImg.setOnClickListener(new+View.OnClickListener()+{
++++@Override
++++public+void+onClick(View+view)+{
++++++++Intent+intent+=+new+Intent(MediaStore.ACTION_IMAGE_CAPTURE);
++++++++if+(intent.resolveActivity(getPackageManager())+!=+null)+{
++++++++++++startActivityForResult(intent,+reqcode);
++++++++}
++++}
});|code-block|syntax|javascript|3945205|现在实现OnActivityResult，这两种方法都是一样的：|3945206|@Override
protected+void+onActivityResult(int+requestCode,+int+resultCode,+Intent+data)+{
++++super.onActivityResult(requestCode,+resultCode,+data);

++++if(requestCode==reqcode+&&+resultCode==RESULT_OK)
++++{
++++++++Bitmap+photo+=+(Bitmap)+data.getExtras().get("data");
++++++++ImageView.setImageBitmap(photo);

++++++++//+CALL+THIS+METHOD+TO+GET+THE+URI+FROM+THE+BITMAP
++++++++Uri+tempUri+=+getImageUri(getApplicationContext(),+photo);

++++++++//+Show+Uri+path+based+on+Image
++++++++Toast.makeText(LiveImage.this,"Here+"%2B+tempUri,+Toast.LENGTH_LONG).show();

++++++++//+Show+Uri+path+based+on+Cursor+Content+Resolver
++++++++Toast.makeText(this,+"Real+path+for+URI+:+"%2BgetRealPathFromURI(tempUri),+Toast.LENGTH_SHORT).show();
++++}
++++else
++++{
++++++++Toast.makeText(this,+"Failed+To+Capture+Image",+Toast.LENGTH_SHORT).show();
++++}
}|3945207|现在创建以上所有方法，以便从Image和Cursor方法创建Uri：|3945208|位图图像的Uri路径：|BOLD|3945209|private+Uri+getImageUri(Context+applicationContext,+Bitmap+photo)+{
++++ByteArrayOutputStream+bytes+=+new+ByteArrayOutputStream();
++++photo.compress(Bitmap.CompressFormat.JPEG,+100,+bytes);
++++String+path+=+MediaStore.Images.Media.insertImage(LiveImage.this.getContentResolver(),+photo,+"Title",+null);
++++return+Uri.parse(path);
}|3945210|来自保存图像真实路径的Uri：|3945211|public+String+getRealPathFromURI(Uri+uri)+{
++++Cursor+cursor+=+getContentResolver().query(uri,+null,+null,+null,+null);
++++cursor.moveToFirst();
++++int+idx+=+cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
++++return+cursor.getString(idx);
}|3945212|entityMap^0|H|3|L|E|0|0|0|0|0|0|0|4|G|0|0|0|5|6|0|0|B|4|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@$9|1B|A|1C|B|C]|$9|1D|A|1E|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|1G|8|@]|D|@]|E|$]]|$1|J|3|K|5|I|7|1H|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|1I|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|1J|8|@]|D|@]|E|$]]|$1|O|3|P|5|Q|7|1K|8|@]|D|@]|E|$R|S]]|$1|T|3|U|5|6|7|1L|8|@$9|1M|A|1N|B|C]]|D|@]|E|$]]|$1|V|3|W|5|Q|7|1O|8|@]|D|@]|E|$R|S]]|$1|X|3|Y|5|6|7|1P|8|@]|D|@]|E|$]]|$1|Z|3|10|5|6|7|1Q|8|@$9|1R|A|1S|B|11]]|D|@]|E|$]]|$1|12|3|13|5|Q|7|1T|8|@]|D|@]|E|$R|S]]|$1|14|3|15|5|6|7|1U|8|@$9|1V|A|1W|B|11]]|D|@]|E|$]]|$1|16|3|17|5|Q|7|1X|8|@]|D|@]|E|$R|S]]|$1|18|3|-4|5|6|7|1Y|8|@]|D|@]|E|$]]]|19|$]]

When we capture the image from Camera in Android then <code>Uri</code> or <code>data.getdata()</code> becomes null. We have two solutions to resolve this issue.

<ol>
<li>Retrieve the Uri path from the Bitmap Image </li>
<li>Retrieve the Uri path from cursor.</li>
</ol>

This is how to retrieve the Uri from the Bitmap Image. First capture image through Intent that will be the same for both methods:

<pre><code>// Capture Image
captureImg.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View view) {
 Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
 if (intent.resolveActivity(getPackageManager()) != null) {
 startActivityForResult(intent, reqcode);
 }
 }
});
</code></pre>

Now implement <code>OnActivityResult</code>, which will be the same for both methods:

<pre><code>@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 super.onActivityResult(requestCode, resultCode, data);

 if(requestCode==reqcode &amp;&amp; resultCode==RESULT_OK)
 {
 Bitmap photo = (Bitmap) data.getExtras().get("data");
 ImageView.setImageBitmap(photo);

 // CALL THIS METHOD TO GET THE URI FROM THE BITMAP
 Uri tempUri = getImageUri(getApplicationContext(), photo);

 // Show Uri path based on Image
 Toast.makeText(LiveImage.this,"Here "+ tempUri, Toast.LENGTH_LONG).show();

 // Show Uri path based on Cursor Content Resolver
 Toast.makeText(this, "Real path for URI : "+getRealPathFromURI(tempUri), Toast.LENGTH_SHORT).show();
 }
 else
 {
 Toast.makeText(this, "Failed To Capture Image", Toast.LENGTH_SHORT).show();
 }
}
</code></pre>

Now create all above methods to create the Uri from Image and Cursor methods:

Uri path from Bitmap Image:

<pre><code>private Uri getImageUri(Context applicationContext, Bitmap photo) {
 ByteArrayOutputStream bytes = new ByteArrayOutputStream();
 photo.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
 String path = MediaStore.Images.Media.insertImage(LiveImage.this.getContentResolver(), photo, "Title", null);
 return Uri.parse(path);
}
</code></pre>

Uri from Real path of saved image:

<pre><code>public String getRealPathFromURI(Uri uri) {
 Cursor cursor = getContentResolver().query(uri, null, null, null, null);
 cursor.moveToFirst();
 int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
 return cursor.getString(idx);
}
</code></pre>

blocks|key|1539411|text|我遇到过这个问题，intent不是空的，但是通过这个intent发送的信息在onActionActivit()中是收不到的|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1539412|​|1539413|📷|atomic|1539414|1539415|这是一个使用getContentResolver()的更好的解决方案：|1539416|++++private+Uri+imageUri;
++++private+ImageView+myImageView;
++++private+Bitmap+thumbnail;

++++@Override
++++protected+void+onCreate(Bundle+savedInstanceState)+{
++++++++super.onCreate(savedInstanceState);
++++++++setContentView(R.layout.activity_main);

++++++...
++++++...++++
++++++...
++++++myImageview+=+(ImageView)+findViewById(R.id.pic);+

++++++values+=+new+ContentValues();
++++++values.put(MediaStore.Images.Media.TITLE,+"MyPicture");
++++++values.put(MediaStore.Images.Media.DESCRIPTION,+"Photo+taken+on+"+%2B+System.currentTimeMillis());
++++++imageUri+=+getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,+values);
++++++Intent+intent+=+new+Intent(MediaStore.ACTION_IMAGE_CAPTURE);
++++++intent.putExtra(MediaStore.EXTRA_OUTPUT,+imageUri);
++++++startActivityForResult(intent,+PICTURE_RESULT);

++}|code-block|syntax|javascript|1539417|onActivityResult()获取由getContentResolver()存储位图：|1539418|+@Override
++++protected+void+onActivityResult(int+requestCode,+int+resultCode,+Intent+data)+{
++++++++super.onActivityResult(requestCode,+resultCode,+data);

++++++++if+(requestCode+==+REQUEST_CODE_TAKE_PHOTO+&&+resultCode+==+RESULT_OK)+{

++++++++++++Bitmap+bitmap;
++++++++++++try+{
++++++++++++++++bitmap+=+MediaStore.Images.Media.getBitmap(getContentResolver(),+imageUri);
++++++++++++++++myImageView.setImageBitmap(bitmap);
++++++++++++}+catch+(FileNotFoundException+e)+{
++++++++++++++++e.printStackTrace();
++++++++++++}+catch+(IOException+e)+{
++++++++++++++++e.printStackTrace();
++++++++++++}

++++++++}
++++}|1539419|1539420|1539421|1539422|1539423|在github中查看我的示例：|1539424|https://github.com/Jorgesys/TakePicture|1539425|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/861e352df5aa0e109ba5deb3e81acf9e.png|imageAlt|1|LINK|MUTABLE|url|https://developer.android.com/reference/android/content/Context.html#getContentResolver()|2|3|https://ask.qcloudimg.com/http-save/yehe-900000/0c9ce02736160313dea748b5dc670295.png|4|https://ask.qcloudimg.com/http-save/yehe-900000/22771e0f5b5b5aa7bf81c2e782c760b7.png|5^0|9|6|Q|6|12|H|0|0|0|1|0|0|0|6|K|1|0|0|0|I|L|K|2|0|0|0|0|1|3|0|0|1|4|0|0|0|0|13|5|0^^$0|@$1|2|3|4|5|6|7|1O|8|@$9|1P|A|1Q|B|C]|$9|1R|A|1S|B|C]|$9|1T|A|1U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1V|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|1W|8|@]|D|@$9|1X|A|1Y|1|1Z]]|E|$]]|$1|K|3|G|5|6|7|20|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|21|8|@]|D|@$9|22|A|23|1|24]]|E|$]]|$1|N|3|O|5|P|7|25|8|@]|D|@]|E|$Q|R]]|$1|S|3|T|5|6|7|26|8|@$9|27|A|28|B|C]]|D|@$9|29|A|2A|1|2B]]|E|$]]|$1|U|3|V|5|P|7|2C|8|@]|D|@]|E|$Q|R]]|$1|W|3|G|5|6|7|2D|8|@]|D|@]|E|$]]|$1|X|3|I|5|J|7|2E|8|@]|D|@$9|2F|A|2G|1|2H]]|E|$]]|$1|Y|3|I|5|J|7|2I|8|@]|D|@$9|2J|A|2K|1|2L]]|E|$]]|$1|Z|3|G|5|6|7|2M|8|@]|D|@]|E|$]]|$1|10|3|11|5|6|7|2N|8|@]|D|@]|E|$]]|$1|12|3|13|5|6|7|2O|8|@]|D|@$9|2P|A|2Q|1|2R]]|E|$]]|$1|14|3|-4|5|6|7|2S|8|@]|D|@]|E|$]]]|15|$16|$5|17|18|19|E|$1A|1B|1C|-4]]|1D|$5|1E|18|1F|E|$1G|1H]]|1I|$5|1E|18|1F|E|$1G|1H]]|1J|$5|17|18|19|E|$1A|1K|1C|-4]]|1L|$5|17|18|19|E|$1A|1M|1C|-4]]|1N|$5|1E|18|1F|E|$1G|13]]]]

I´ve had experienced this problem, the <code>intent</code> is not null but the information sent via this <code>intent</code> is not received in <code>onActionActivit()</code>

<a href="https://i.stack.imgur.com/bt3oI.png" rel="noreferrer"><img src="https://i.stack.imgur.com/bt3oI.png" alt="enter image description here"></a>

This is a better solution using <a href="https://developer.android.com/reference/android/content/Context.html#getContentResolver()" rel="noreferrer">getContentResolver()</a> :

<pre><code> private Uri imageUri;
 private ImageView myImageView;
 private Bitmap thumbnail;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);

 ...
 ... 
 ...
 myImageview = (ImageView) findViewById(R.id.pic); 

 values = new ContentValues();
 values.put(MediaStore.Images.Media.TITLE, "MyPicture");
 values.put(MediaStore.Images.Media.DESCRIPTION, "Photo taken on " + System.currentTimeMillis());
 imageUri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
 Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
 intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
 startActivityForResult(intent, PICTURE_RESULT);

 }
</code></pre>

the <code>onActivityResult()</code> get a bitmap stored by <a href="https://developer.android.com/reference/android/content/Context.html#getContentResolver()" rel="noreferrer">getContentResolver()</a> :

<pre><code> @Override
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 super.onActivityResult(requestCode, resultCode, data);

 if (requestCode == REQUEST_CODE_TAKE_PHOTO &amp;&amp; resultCode == RESULT_OK) {

 Bitmap bitmap;
 try {
 bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), imageUri);
 myImageView.setImageBitmap(bitmap);
 } catch (FileNotFoundException e) {
 e.printStackTrace();
 } catch (IOException e) {
 e.printStackTrace();
 }

 }
 }
</code></pre>

<a href="https://i.stack.imgur.com/VSdjU.png" rel="noreferrer"><img src="https://i.stack.imgur.com/VSdjU.png" alt="introducir la descripción de la imagen aquí"></a>
<a href="https://i.stack.imgur.com/nJP9z.png" rel="noreferrer"><img src="https://i.stack.imgur.com/nJP9z.png" alt="introducir la descripción de la imagen aquí"></a>

Check my example in github:

<a href="https://github.com/Jorgesys/TakePicture" rel="noreferrer">https://github.com/Jorgesys/TakePicture</a>

blocks|key|1535443|text|适用于我的Kotlin代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1535444|+private+fun+takePhotoFromCamera()+{
++++++++++val+intent+=+Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE)
++++++++startActivityForResult(intent,+PERMISSIONS_REQUEST_TAKE_PICTURE_CAMERA)
++++++}|code-block|syntax|javascript|1535445|并获得结果：|1535446|+override+fun+onActivityResult(requestCode:+Int,+resultCode:+Int,+data:+Intent?)+{
++++super.onActivityResult(requestCode,+resultCode,+data)
+if+(requestCode+==+PERMISSIONS_REQUEST_TAKE_PICTURE_CAMERA)+{
+++++++++if+(resultCode+==+Activity.RESULT_OK)+{
+++++++++++val+photo:+Bitmap?+=++MediaStore.Images.Media.getBitmap(this.contentResolver,+Uri.parse(+data!!.dataString)+++)
++++++++++++//+Do+something+here+:+set+image+to+an+ImageView+or+save+it+..+++
++++++++++++++imgV_pic.imageBitmap+=+photo+
++++++++}+else+if+(resultCode+==+Activity.RESULT_CANCELED)+{
++++++++++++Log.i(TAG,+"Camera++,+RESULT_CANCELED+")
++++++++}

++++}

}|1535447|别忘了声明请求代码：|1535448|companion+object+{
+const+val+PERMISSIONS_REQUEST_TAKE_PICTURE_CAMERA+=+300
++}|1535449|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Kotlin code that works for me:

<pre><code> private fun takePhotoFromCamera() {
 val intent = Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE)
 startActivityForResult(intent, PERMISSIONS_REQUEST_TAKE_PICTURE_CAMERA)
 }
</code></pre>

And get Result :

<pre><code> override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
 super.onActivityResult(requestCode, resultCode, data)
 if (requestCode == PERMISSIONS_REQUEST_TAKE_PICTURE_CAMERA) {
 if (resultCode == Activity.RESULT_OK) {
 val photo: Bitmap? = MediaStore.Images.Media.getBitmap(this.contentResolver, Uri.parse( data!!.dataString) )
 // Do something here : set image to an ImageView or save it .. 
 imgV_pic.imageBitmap = photo 
 } else if (resultCode == Activity.RESULT_CANCELED) {
 Log.i(TAG, "Camera , RESULT_CANCELED ")
 }

 }

}
</code></pre>

and don't forget to declare request code:

<pre><code>companion object {
 const val PERMISSIONS_REQUEST_TAKE_PICTURE_CAMERA = 300
 }
</code></pre>

blocks|key|1835702|text|经过大量的尝试和研究，我终于能够弄明白了。首先，来自Intent的变量数据将始终为空，因此，只要您在下面的示例中向startActivityForResult.Follow传递URI，检查!null就会使您的应用程序崩溃。我将使用Kotlin。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1835703|1835704|打开相机意图|ordered-list-item|1835705|1835706|fun+addBathroomPhoto(){+addbathroomphoto.setOnClickListener{+request_capture_image=2+var+takePictureIntent:意图？takePictureIntent+=Intent(MediaStore.ACTION_IMAGE_CAPTURE)+if(takePictureIntent.resolveActivity(activity?.getPackageManager())+!=+null){+val+photoFile:+File？=+try+{+createImageFile()+}+catch+(例如:+IOException)+{+//创建文件时出错null+}+if+(photoFile+!=+null)+{+val+photoURI:+Uri+=FileProvider.getUriForFile(活动！！，"ogavenue.ng.hotelroomkeeping.fileprovider"，photoFile)+takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT，photoURI)；startActivityForResult(takePictureIntent，request_capture_image)；}|1835707|}`|1835708|创建createImageFile().But必须将imageFilePath变量设置为全局变量。有关如何创建它的示例，请参阅Android官方文档和相当简单的|unordered-list-item|1835709|
|1835710|Get+Intent。|1835711|1835712|覆盖myBitmap=BitmapFactory.decodeFile(imageFilePath)+onActivityResult+(requestCode+:+Int，resultCode:+Int，data:+Intent?)+{+if+(requestCode+==+1+&&+resultCode+==+RESULT_OK)+{+add_room_photo_txt.text="“var+fun+addroomphoto.setImageBitmap(myBitmap)+var+file=File(imageFilePath)+var+fis=FileInputStream(Fis)；roomphoto=getBytesFromBitmap(+bm+)+}}|1835713|方法|1835714|1835715|fun+getBytesFromBitmap(Bitmap:Bitmap)：字节数组{+var+stream=ByteArrayOutputStream()+bitmap.compress(Bitmap.CompressFormat.JPEG，100，bitmap.compress)；Bitmap.CompressFormat.JPEG+stream.toByteArray()；}|1835716|我希望这能帮到你。|1835717|entityMap^0|2M|5|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|17|8|@$9|18|A|19|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|1B|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]|$1|K|3|L|5|6|7|1D|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|1E|8|@]|D|@]|E|$]]|$1|O|3|P|5|Q|7|1F|8|@]|D|@]|E|$]]|$1|R|3|S|5|6|7|1G|8|@]|D|@]|E|$]]|$1|T|3|U|5|Q|7|1H|8|@]|D|@]|E|$]]|$1|V|3|-4|5|6|7|1I|8|@]|D|@]|E|$]]|$1|W|3|X|5|6|7|1J|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|Q|7|1K|8|@]|D|@]|E|$]]|$1|10|3|-4|5|6|7|1L|8|@]|D|@]|E|$]]|$1|11|3|12|5|6|7|1M|8|@]|D|@]|E|$]]|$1|13|3|14|5|6|7|1N|8|@]|D|@]|E|$]]|$1|15|3|-4|5|6|7|1O|8|@]|D|@]|E|$]]]|16|$]]

After much try and study, I was able to figure it out. First, the variable data from Intent will always be null so, therefore, checking for <code>!null</code> will crash your app so long you are passing a URI to startActivityForResult.Follow the example below.
I will be using Kotlin.

<ol>
<li>Open the camera intent

<pre><code>fun addBathroomPhoto(){
addbathroomphoto.setOnClickListener{

 request_capture_image=2

 var takePictureIntent:Intent?
 takePictureIntent =Intent(MediaStore.ACTION_IMAGE_CAPTURE)
 if(takePictureIntent.resolveActivity(activity?.getPackageManager()) != null){

 val photoFile: File? = try {
 createImageFile()
 } catch (ex: IOException) {
 // Error occurred while creating the File

 null
 }

 if (photoFile != null) {
 val photoURI: Uri = FileProvider.getUriForFile(
 activity!!,
 "ogavenue.ng.hotelroomkeeping.fileprovider",photoFile)
 takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
 photoURI);
 startActivityForResult(takePictureIntent,
 request_capture_image);
 }


 }

}
</code></pre>

}`</li>
<li>Create the createImageFile().But you MUST make the imageFilePath variable global. Example on how to create it is on Android official documentation and pretty straightforward </li>
<li>Get Intent

<pre><code> override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {

if (requestCode == 1 &amp;&amp; resultCode == RESULT_OK) {
 add_room_photo_txt.text=""
 var myBitmap=BitmapFactory.decodeFile(imageFilePath)
 addroomphoto.setImageBitmap(myBitmap)
 var file=File(imageFilePath)
 var fis=FileInputStream(file)
 var bm = BitmapFactory.decodeStream(fis);
 roomphoto=getBytesFromBitmap(bm) }}
</code></pre></li>
<li>The getBytesFromBitmap method

<pre><code> fun getBytesFromBitmap(bitmap:Bitmap):ByteArray{

 var stream=ByteArrayOutputStream()
 bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
 return stream.toByteArray();
 }
</code></pre></li>
</ol>

I hope this helps.

blocks|key|1835759|text|当我们从安卓的摄像头捕获图像时，Uri或data.getdata()将为空。我们有两个解决方案来解决这个问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1835760|1835761|我们可以从位图图像中获取Uri路径|ordered-list-item|1835762|我们可以从光标中获取Uri路径。|1835763|1835764|我将在这里实现所有的方法，请仔细观看和阅读以下内容：|1835765|首先，我将告诉如何从位图图像中获取Uri+:完整的代码如下：|1835766|首先，我们将通过意图捕获图像，这两种方法都是相同的，所以这段代码我在这里只写一次：|1835767|//+Capture+Image
captureImg.setOnClickListener(new+View.OnClickListener(){
++++@Override+public+void+onClick(View+view){
++++++++Intent+intent=new+Intent(MediaStore.ACTION_IMAGE_CAPTURE);
++++++++if(intent.resolveActivity(getPackageManager())!=null){
++++++++++++startActivityForResult(intent,reqcode);
++++++++}

++++}
});++|code-block|syntax|javascript|1835768|现在我们将实现OnActivityResult：-(这对于上述两个方法是相同的)：-|1835769|@Override
protected+void+onActivityResult(int+requestCode,+int+resultCode,+Intent+data)
{
++++super.onActivityResult(requestCode,+resultCode,+data);

++++if+(requestCode+==+reqcode+&&+resultCode+==+RESULT_OK)
++++{

++++++++Bitmap+photo+=+(Bitmap)+data.getExtras().get("data");
++++++++ImageView.setImageBitmap(photo);

++++++++//+CALL+THIS+METHOD+TO+GET+THE+URI+FROM+THE+BITMAP
++++++++Uri+tempUri+=+getImageUri(getApplicationContext(),+photo);

++++++++//Show+Uri+path+based+on+Image
++++++++Toast.makeText(LiveImage.this,+"Here+"+%2B+tempUri,+Toast.LENGTH_LONG).show();

++++++++//Show+Uri+path+based+on+Cursor+Content+Resolver
++++++++Toast.makeText(this,+"Real+path+for+URI+:+"+%2B+getRealPathFromURI(tempUri),+Toast.LENGTH_SHORT).show();
++++}
++++else
++++{
++++++++Toast.makeText(this,+"Failed+To+Capture+Image",+Toast.LENGTH_SHORT).show();
++++}
}+++++|1835770|现在我们将创建上述所有方法，以便通过类从Image和Cursor方法创建Uri：|1835771|现在，位图图像中的URI路径|1835772|private+Uri+getImageUri(Context+applicationContext,+Bitmap+photo)
{
++++ByteArrayOutputStream+bytes+=+new+ByteArrayOutputStream();
++++photo.compress(Bitmap.CompressFormat.JPEG,+100,+bytes);
++++String+path+=+MediaStore.Images.Media.insertImage(LiveImage.this.getContentResolver(),+photo,+"Title",+null);
++++return+Uri.parse(path);
}|1835773|\+Uri来自保存的图像的真实路径|1835774|public+String+getRealPathFromURI(Uri+uri)
{
++++Cursor+cursor+=+getContentResolver().query(uri,+null,+null,+null,+null);
++++cursor.moveToFirst();
++++int+idx+=+cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
++++return+cursor.getString(idx);
}|1835775|entityMap^0|K|E|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1D|8|@$9|1E|A|1F|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|1G|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|1H|8|@]|D|@]|E|$]]|$1|J|3|K|5|I|7|1I|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|1J|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|1K|8|@]|D|@]|E|$]]|$1|O|3|P|5|6|7|1L|8|@]|D|@]|E|$]]|$1|Q|3|R|5|6|7|1M|8|@]|D|@]|E|$]]|$1|S|3|T|5|U|7|1N|8|@]|D|@]|E|$V|W]]|$1|X|3|Y|5|6|7|1O|8|@]|D|@]|E|$]]|$1|Z|3|10|5|U|7|1P|8|@]|D|@]|E|$V|W]]|$1|11|3|12|5|6|7|1Q|8|@]|D|@]|E|$]]|$1|13|3|14|5|6|7|1R|8|@]|D|@]|E|$]]|$1|15|3|16|5|U|7|1S|8|@]|D|@]|E|$V|W]]|$1|17|3|18|5|6|7|1T|8|@]|D|@]|E|$]]|$1|19|3|1A|5|U|7|1U|8|@]|D|@]|E|$V|W]]|$1|1B|3|-4|5|6|7|1V|8|@]|D|@]|E|$]]]|1C|$]]

When we will capture the image from Camera in android then Uri or <code>data.getdata()</code> comes null. we have two solutions to resolve this issue.

<ol>
<li>We can got the Uri path from the Bitmap Image </li>
<li>We can got the Uri path from cursor.</li>
</ol>

I will implement all methods here, Please carefully watch and read these:-

First i will tell how to get Uri from Bitmap Image:
Complete code is : 

First we will capture image through Intent that will same for both methods so this code i will write one time only here :

<pre><code>// Capture Image
captureImg.setOnClickListener(new View.OnClickListener(){
 @Override public void onClick(View view){
 Intent intent=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
 if(intent.resolveActivity(getPackageManager())!=null){
 startActivityForResult(intent,reqcode);
 }

 }
}); 
</code></pre>

Now we will Implement OnActivityResult :-(This will be same for both above 2 methods):-

<pre><code>@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
 super.onActivityResult(requestCode, resultCode, data);

 if (requestCode == reqcode &amp;&amp; resultCode == RESULT_OK)
 {

 Bitmap photo = (Bitmap) data.getExtras().get("data");
 ImageView.setImageBitmap(photo);

 // CALL THIS METHOD TO GET THE URI FROM THE BITMAP
 Uri tempUri = getImageUri(getApplicationContext(), photo);

 //Show Uri path based on Image
 Toast.makeText(LiveImage.this, "Here " + tempUri, Toast.LENGTH_LONG).show();

 //Show Uri path based on Cursor Content Resolver
 Toast.makeText(this, "Real path for URI : " + getRealPathFromURI(tempUri), Toast.LENGTH_SHORT).show();
 }
 else
 {
 Toast.makeText(this, "Failed To Capture Image", Toast.LENGTH_SHORT).show();
 }
} 
</code></pre>

Now we will create all above method to create Uri from Image and Cursor methods via classes:

Now URI path from Bitmap Image

<pre><code>private Uri getImageUri(Context applicationContext, Bitmap photo)
{
 ByteArrayOutputStream bytes = new ByteArrayOutputStream();
 photo.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
 String path = MediaStore.Images.Media.insertImage(LiveImage.this.getContentResolver(), photo, "Title", null);
 return Uri.parse(path);
}
</code></pre>

\ Uri from Real path of saved image

<pre><code>public String getRealPathFromURI(Uri uri)
{
 Cursor cursor = getContentResolver().query(uri, null, null, null, null);
 cursor.moveToFirst();
 int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
 return cursor.getString(idx);
}
</code></pre>

blocks|key|1835777|text|我使用contentResolver创建路径，并且它起作用了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1835778|var+values+=+ContentValues()
++++++++++++values.put(MediaStore.Images.Media.TITLE,+"MyPicture")
++++++++++++values.put(
++++++++++++++++MediaStore.Images.Media.DESCRIPTION,
++++++++++++++++"Photo+taken+on+"+%2B+System.currentTimeMillis()
++++++++++++)
++++++++++++cameraUri+=+contentResolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,+values)

++++++++++++val+cameraIntent+=+Intent(MediaStore.ACTION_IMAGE_CAPTURE)
++++++++++++cameraIntent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,+cameraUri);
++++++++++++startActivityForResult(cameraIntent,+REQUEST_CODE)|code-block|syntax|javascript|1835779|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I used contentResolver to create the path and it worked.
<pre><code>var values = ContentValues()
 values.put(MediaStore.Images.Media.TITLE, &quot;MyPicture&quot;)
 values.put(
 MediaStore.Images.Media.DESCRIPTION,
 &quot;Photo taken on &quot; + System.currentTimeMillis()
 )
 cameraUri = contentResolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values)

 val cameraIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
 cameraIntent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, cameraUri);
 startActivityForResult(cameraIntent, REQUEST_CODE)

</code></pre>

blocks|key|1835817|text|即使到了2022年，它仍然会发生，我将其修复如下：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1835818|+if+(Build.VERSION.SDK_INT+>=+Build.VERSION_CODES.N)+{+//+android7.0
++++++++++++++++++++photoUri=+FileProvider.getUriForFile(
++++++++++++++++++++++++++++MainActivity.this,
++++++++++++++++++++++++++++BuildConfig.APPLICATION_ID+%2B+".provider",
++++++++++++++++++++++++++++new+File(mCameraFilePath));
++++++++++++++++++++intent.putExtra(MediaStore.EXTRA_OUTPUT,+photoUri);
++++++++++++++++}+else+{
++++++++++++++++++++photoUri+=+Uri.fromFile(new+File(mCameraFilePath));
++++++++++++++++++++intent.putExtra(MediaStore.EXTRA_OUTPUT,photoUri);
++++++++++++++++}|code-block|syntax|javascript|1835819|，oh...just在你的活动中添加一个可存活的(PhotoUri)！然后|1835820|filePathCallback.onReceiveValue(new+Uri[]{+photoUri+});|1835821|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

it still occurs even now 2022, i fix it as follow:
<pre><code> if (Build.VERSION.SDK_INT &gt;= Build.VERSION_CODES.N) { // android7.0
 photoUri= FileProvider.getUriForFile(
 MainActivity.this,
 BuildConfig.APPLICATION_ID + &quot;.provider&quot;,
 new File(mCameraFilePath));
 intent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);
 } else {
 photoUri = Uri.fromFile(new File(mCameraFilePath));
 intent.putExtra(MediaStore.EXTRA_OUTPUT,photoUri);
 }
</code></pre>
,oh...just add a viriable(photoUri) to your activity! then
<pre><code>filePathCallback.onReceiveValue(new Uri[]{ photoUri });
</code></pre>

I have an android application which contains multiple activities. 

In one of them I'm using a button which will call the device camera :

<pre><code>public void onClick(View view) {
 Intent photoIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
 startActivityForResult(photoIntent, IMAGE_CAPTURE);
}
</code></pre>

In the same activity I call the <code>OnActivityResult</code> method for the image result :

<pre><code>@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 if (requestCode == IMAGE_CAPTURE) {
 if (resultCode == RESULT_OK) {
 Bitmap image = (Bitmap) data.getExtras().get("data");
 ImageView imageview = (ImageView) findViewById(R.id.pic);
 imageview.setImageBitmap(image);
 } else if (resultCode == RESULT_CANCELED) {
 Toast.makeText(this, "CANCELED ", Toast.LENGTH_LONG).show();
 }
 }
}
</code></pre>

The problem is that the intent <code>data</code> is null and the <code>OnActivityResult</code> method turns directly to the <code>(resultCode == RESULT_CANCELED)</code> and the application returns to the previous avtivity.

How can I fix this issue and after calling the camera, the application returns to the current activity which contains an <code>ImageView</code> which will contains the picture taken?

Thanks

Android Camera : data intent returns null

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个android应用程序，其中包含多个活动。在其中一个中，我使用了一个按钮，该按钮将调用设备camera：public void onClick(View view) {    Intent photoIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);   ...

问Android摄像头:数据意图返回空
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