我有一个使用 ZXing 库的二维码扫描仪，现在我只需要保存图像中的二维码。 我尝试拍照，但总是参加不同的活动。像扫描活动与拍照活动不同。所以我必须做2次才能获取二维码。
我正在尝试使用这个cameraIntent.putExtra("android.intent.extra.quickCapture", true);，但它看起来像正常拍照。
我还发现了一个类似于我现在所做的应用程序。 二维码和条码扫描仪
从此：
到这里：
我想做的是扫描二维码，只裁剪二维码部分，然后向数据库发送请求。 或者无论如何要这样做并提供帮助，非常感谢。
【问题讨论】：
扫描二维码，同时拍照二维码
如果您的意思是扫描二维码并将二维码显示为图片，那么您可以按照答案进行操作。
通过integrator.initiateScan();扫描二维码，然后在onActivityResult上通过MultiFormatWriter和BarcodeEncoder创建结果的位图，并在任何ImageView中显示位图并在任何TextView中显示。
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();
}
根据您附加的图片，我将分享一个完整的活动和一个布局文件，这将满足您的要求。
这将扫描二维码，将结果显示为图像和文本。如果结果包含任何 url ，那么它将使其可点击 Linkify 。通过ClipboardManager复制结果添加了几个按钮，通过Intent分享结果。
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>
接收活动 -
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);
}
}
}
【讨论】：