同时扫描QR码和拍摄QR码？
同时扫描QR码和拍摄QR码？
提问于 2021-08-30 03:18:42
我有一个使用ZXing库的QR代码扫描器，现在我只需要从图像中保存QR代码。我试着拍照，但总是在不同的活动中。像扫描一样，活动和拍照是不一样的。所以我要做两次才能获得QR代码。
- 扫描QR代码
- 拍照。我只想这样做一次，而不是拍照活动。
我试着用这个cameraIntent.putExtra("android.intent.extra.quickCapture", true);，但它似乎是正常的拍照。
我还发现了一个类似于我现在所做的应用。QR &条码扫描器
从这里:
to此文:
我想做的是像扫描QR代码，只裁剪QR代码部分，并向数据库发送请求。或者无论如何都要帮忙，真的很感激。
回答 1
Stack Overflow用户
发布于 2021-08-30 09:00:22
同时扫描QR码和图像QR码
如果您的意思是扫描qr代码并将qr代码显示为图像，那么您可以按照答案进行操作。
通过integrator.initiateScan();扫描qr代码，然后在onActivityResult上通过MultiFormatWriter和BarcodeEncoder创建结果位图，并在任何ImageView中显示位图并生成任何TextView。
MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
try {
BitMatrix bitMatrix = multiFormatWriter.encode(result.getContents(), BarcodeFormat.QR_CODE, 200, 200);
BarcodeEncoder barcodeEncoder = new BarcodeEncoder();
Bitmap bitmap = barcodeEncoder.createBitmap(bitMatrix);
image.setImageBitmap(bitmap);
} catch (WriterException e) {
e.printStackTrace();
}基于您附加的图片，我共享一个完整的活动和布局文件，这将涵盖您的需求。这将扫描qr代码，显示结果为图像和文本也。如果结果包含任何url，那么它将使其成为可点击的Linkify。很少有按钮添加到通过ClipboardManager复制结果，通过意图共享结果。
receive.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/linear1"
android:orientation="horizontal">
<Button
android:id="@+id/openButton"
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_marginTop="50dp"
android:layout_weight="1"
android:background="@android:color/transparent"
android:text="Open"
android:textAllCaps="false"
android:textSize="20sp"
android:textStyle="normal" />
<Button
android:id="@+id/searchButton"
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_marginTop="50dp"
android:layout_weight="1"
android:background="@android:color/transparent"
android:text="Search"
android:textAllCaps="false"
android:textSize="20sp"
android:textStyle="normal" />
<Button
android:id="@+id/copyButton"
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_marginTop="50dp"
android:layout_weight="1"
android:background="@android:color/transparent"
android:text="Copy"
android:textAllCaps="false"
android:textSize="20sp"
android:textStyle="normal" />
<Button
android:id="@+id/shareButton"
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_marginTop="50dp"
android:layout_weight="1"
android:background="@android:color/transparent"
android:text="Share"
android:textAllCaps="false"
android:textSize="20sp"
android:textStyle="normal" />
</LinearLayout>
<TextView
android:id="@+id/someText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="120dp"
android:gravity="center"
android:textColor="@android:color/black" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="450dp"
android:layout_below="@+id/someText">
<ImageView
android:id="@+id/image"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="520dp"
android:layout_centerHorizontal="true"
android:text="SCAN AGAIN"
android:theme="@style/ConnectButton"
android:id="@+id/scan_btn"/>
</RelativeLayout>ReceiveS活性-
public class ReceiveS extends AppCompatActivity {
public static Button scan_btn = null;
ImageView image;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.receive);
image = (ImageView) findViewById(R.id.image);
// show custom alert dialog
final Dialog dialog = new Dialog(this);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setCancelable(true);
dialog.setContentView(R.layout.receive);
TextView text = (TextView) findViewById(R.id.someText);
final Activity activity = this;
scan_btn = (Button) findViewById(R.id.scan_btn);
scan_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
IntentIntegrator integrator = new IntentIntegrator(activity);
integrator.setDesiredBarcodeFormats(IntentIntegrator.QR_CODE_TYPES);
integrator.setPrompt("Scan");
integrator.setCameraId(0);
integrator.setBeepEnabled(false);
integrator.setBarcodeImageEnabled(false);
integrator.initiateScan();
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
TextView text = (TextView) findViewById(R.id.someText);
final IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
if (result != null) {
if (result.getContents() == null) {
Toast.makeText(this, "You cancelled scanning", Toast.LENGTH_LONG).show();
} else {
MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
try {
BitMatrix bitMatrix = multiFormatWriter.encode(result.getContents(), BarcodeFormat.QR_CODE, 200, 200);
BarcodeEncoder barcodeEncoder = new BarcodeEncoder();
Bitmap bitmap = barcodeEncoder.createBitmap(bitMatrix);
image.setImageBitmap(bitmap);
} catch (WriterException e) {
e.printStackTrace();
}
SpannableString url = SpannableString.valueOf(result.getContents());
Linkify.addLinks(url, Linkify.WEB_URLS);
text.setText(url);
text.setMovementMethod(LinkMovementMethod.getInstance());
Button openlink = (Button) findViewById(R.id.openButton);
Button webSearch = (Button) findViewById(R.id.searchButton);
Button copy = (Button) findViewById(R.id.copyButton);
Button share = (Button) findViewById(R.id.shareButton);
openlink.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String url = result.getContents();
if (url.startsWith("https://") || url.startsWith("http://")) {
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(intent);
} else {
Toast.makeText(ReceiveS.this, "Invalid Url", Toast.LENGTH_SHORT).show();
}
}
});
webSearch.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String url;
url = "http://www.google.com/#q=" + result.getContents();
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(intent);
}
});
copy.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
ClipData clip = ClipData.newPlainText("", result.getContents());
clipboard.setPrimaryClip(clip);
Toast.makeText(getApplicationContext(), "Copied to clipboard", Toast.LENGTH_SHORT).show();
}
});
share.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
String shareBody = result.getContents();
sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, shareBody);
startActivity(Intent.createChooser(sharingIntent, "Share "));
}
});
}
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
}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/68978601
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