java.lang.SecurityException:权限拒绝:在Android中阅读com.android.providers.media.MediaProvider，同时从图库拍照
java.lang.SecurityException:权限拒绝:在Android中阅读com.android.providers.media.MediaProvider，同时从图库拍照
提问于 2016-06-07 14:49:08
我正在尝试从图库中选择图像，但我的应用程序收到异常消息“出了问题”。我以为我正确地设置了android的WRITE_EXTERNAL_STORAGE和READ_EXTERNAL_STORAGE权限，但是我一直收到错误，我应该怎么做才能让它正常工作？
这是我的Log cat错误
06-07 12:07:27.567 1692-1711/? E/DatabaseUtils﹕ Writing exception to parcel
java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/images/media/359 from pid=2818, uid=10057 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
at android.content.ContentProvider.enforceReadPermissionInner(ContentProvider.java:605)
at android.content.ContentProvider$Transport.enforceReadPermission(ContentProvider.java:480)
at android.content.ContentProvider$Transport.query(ContentProvider.java:211)
at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:112)
at android.os.Binder.execTransact(Binder.java:453)这是我的活动代码
public class MainActivity extends Activity {
private static int RESULT_LOAD_IMG = 1;
String imgDecodableString;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void loadImagefromGallery(View view) {
// Create intent to Open Image applications like Gallery, Google Photos
Intent galleryIntent = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
// Start the Intent
startActivityForResult(galleryIntent, RESULT_LOAD_IMG);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
try {
// When an Image is picked
if (requestCode == RESULT_LOAD_IMG && resultCode == RESULT_OK
&& null != data) {
// Get the Image from data
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
// Get the cursor
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
// Move to first row
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
imgDecodableString = cursor.getString(columnIndex);
cursor.close();
ImageView imgView = (ImageView) findViewById(R.id.imgView);
// Set the Image in ImageView after decoding the String
imgView.setImageBitmap(BitmapFactory
.decodeFile(imgDecodableString));
} else {
Toast.makeText(this, "You haven't picked Image",
Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
Toast.makeText(this, "Something went wrong", Toast.LENGTH_LONG)
.show();
}
}
}以下是我的Menifest.xml文件代码
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.tazeen.image_fromgallery" >
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>回答 3
Stack Overflow用户
发布于 2016-06-07 14:51:43
对于您的问题，您有两种解决方案。最快的方法是将targetApi降低到22 (build.gradle文件)。其次是使用新的runtimePermission模型:由于您的目标api是23，因此您还应该在运行时添加权限。
if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE)
!= PackageManager.READ_EXTERNAL_STORAGE) {
// Should we show an explanation?
if (shouldShowRequestPermissionRationale(
Manifest.permission.READ_EXTERNAL_STORAGE)) {
// Explain to the user why we need to read the contacts
}
requestPermissions(new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
// MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE is an
// app-defined int constant
return;
}在此处找到Sniplet：https://developer.android.com/training/permissions/requesting.html
Stack Overflow用户
发布于 2017-09-26 09:40:08
您需要显式地将权限设置为与您的意图匹配的所有包。您可以使用此实用程序来执行此操作：
List<ResolveInfo> resInfoList = getContext().getPackageManager().queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
for (ResolveInfo resolveInfo : resInfoList) {
String packageName = resolveInfo.activityInfo.packageName;
getContext().grantUriPermission(packageName, imageFileUri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
}Stack Overflow用户
发布于 2018-05-12 22:04:07
有一个简单的方法，设置一个动作到你的"galleryIntent“，这样操作系统就不会死机了(我在Andorid Emulator API23上测试了一下，它工作了)：
galleryIntent.setAction(Intent.ACTION_GET_CONTENT);另外，也不要忘了设置一个类型：
galleryIntent.setType("image/*");页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/37672338
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