Zxing 二维码扫描仪不适用于所有设备
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【中文标题】Zxing 二维码扫描仪不适用于所有设备【英文标题】：Zxing Qr code scanner does not working on all Devices 【发布时间】：2016-09-10 11:48:18 【问题描述】：当我在 Asus_Z00AD(ver-5.0) 中运行应用程序时，QR 码扫描效果很好，但是当我在 moto-g(ver-6.0) 等任何其他手机上运行它时，它会显示一个空白屏幕 没有别的了。。 怎么办..请建议我..
我的扫描仪活动
package hashrail.com.aggregate.activity;
import android.app.Activity;
import android.content.Intent;
import android.graphics.PointF;
import android.os.Bundle;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.util.SparseArray;
import android.view.KeyEvent;
import android.view.MenuItem;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.google.zxing.Result;
import java.io.IOException;
import hashrail.com.aggregate.R;
import me.dm7.barcodescanner.zxing.ZXingScannerView;
public class BarcodeScanFragment extends AppCompatActivity implements ZXingScannerView.ResultHandler
Toolbar toolbar;
LinearLayout rlpditem;
private String codeFormat, codeContent;
private TextView formatTxt, contentTxt;
ImageView imgBarcode;
LinearLayout llQRrcode;
private ZXingScannerView mScannerView;
public BarcodeScanFragment()
// Required empty public constructor
@Override
public void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_barcode_scan);
toolbar = (Toolbar) findViewById(R.id.toolbar1);
llQRrcode = (LinearLayout) findViewById(R.id.llQRrcode);
formatTxt = (TextView) findViewById(R.id.scan_format);
contentTxt = (TextView) findViewById(R.id.scan_content);
imgBarcode = (ImageView) findViewById(R.id.scssan_button);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
setTitle("Barcode Scanner");
/* imgBarcode.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
setContentView(mScannerView);
mScannerView.startCamera();
);*/
@Override
public boolean onOptionsItemSelected(MenuItem item)
switch (item.getItemId())
case android.R.id.home:
onBackPressed();
return true;
default:
return super.onOptionsItemSelected(item);
public void QrScanner(View view)
// Start camera
mScannerView = new ZXingScannerView(BarcodeScanFragment.this); // Programmatically initialize the scanner view
mScannerView.setResultHandler(BarcodeScanFragment.this); // Register ourselves as a handler for scan results.
setContentView(mScannerView);
mScannerView.startCamera();
/* @Override
public void onPause()
super.onPause();
mScannerView.stopCamera (); // Stop camera on pause
*/
@Override
public void handleResult(Result rawResult)
// Do something with the result here
Log.e("handler", rawResult.getText()); // Prints scan results
Log.e("handler", rawResult.getBarcodeFormat().toString()); // Prints the scan format (qrcode)
// show the scanner result into dialog box.
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Scan Result");
builder.setMessage(rawResult.getText());
AlertDialog alert1 = builder.create();
alert1.show();
// If you would like to resume scanning, call this method below:
mScannerView.resumeCameraPreview(this);
Gradle 文件
apply plugin: 'com.android.application'
android
compileSdkVersion 23
buildToolsVersion "23.0.3"
defaultConfig
applicationId "hashrail.com.aggregate"
minSdkVersion 11
targetSdkVersion 23
versionCode 1
versionName "1.0"
useLibrary 'org.apache.http.legacy'
buildTypes
release
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
dependencies
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.3.0'
compile 'com.android.support:design:23.0.1'
compile 'com.android.support:cardview-v7:23.0.1'
compile 'com.android.support:palette-v7:23.0.1'
compile 'com.android.support:recyclerview-v7:23.0.1'
compile 'com.github.lzyzsd:circleprogress:1.1.0@aar'
compile 'me.dm7.barcodescanner:zxing:1.8.4'
//compile 'com.dlazaro66.qrcodereaderview:qrcodereaderview:1.0.0'
/*compile 'com.journeyapps:zxing-android-embedded:2.0.1@aar'
compile 'com.journeyapps:zxing-android-legacy:2.0.1@aar'
compile 'com.journeyapps:zxing-android-integration:2.0.1@aar'
compile 'com.google.zxing:core:3.0.1'*/
【问题讨论】：
【参考方案1】：我正在使用相同的库，它在 6.0 和 7.0 版设备上运行良好，但在低版本设备上存在一些问题。我还在 moto g4 上对其进行了测试，在 g4 和 g5 上运行良好。
您的代码完全正确，我正在做同样的事情，做一件事来处理它以进行扫描为扫描仪视图创建单独的活动，并从 handleResult() 方法中获取您想要的数据，因为可能是由于导致空白屏幕问题为扫描仪视图再次设置内容视图覆盖。如果您需要代码，请尝试这种方式，然后我也可以共享代码...
【讨论】：
可以分享给我吗？无论使用什么设备，我都会遇到白屏问题【参考方案2】：请查看此演示。
public class ContinuousCaptureActivity extends Activity implements ZxingScannerView.TorchListener, View.OnClickListener
// PICK_PHOTO_CODE is a constant integer
public final static int PICK_IMAGE_REQUEST_CODE = 1046;
private static final String TAG = ContinuousCaptureActivity.class.getSimpleName();
private static final int READ_EXTERNAL_STORAGE_REQUEST_CODE = 1051;
private ZxingScannerView barcodeView;
private BeepManager beepManager;
private String lastText;
private boolean isTorchEnabled;
private BarcodeCallback callback = new BarcodeCallback()
@Override
public void barcodeResult(BarcodeResult result)
if (result.getText() == null || result.getText().equals(lastText))
// Prevent duplicate scans
return;
lastText = result.getText();
barcodeView.setStatusText(result.getText());
beepManager.playBeepSoundAndVibrate();
@Override
public void possibleResultPoints(List<ResultPoint> resultPoints)
;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.continuous_scan);
beepManager = new BeepManager(this);
barcodeView = findViewById(R.id.barcode_scanner);
barcodeView.setFullScreenScan();
barcodeView.getCameraSettings().setAutoFocusEnabled(true);
barcodeView.getCameraSettings().setScanInverted(true);
barcodeView.getCameraSettings().setExposureEnabled(true);
Collection<BarcodeFormat> formats = Arrays.asList(BarcodeFormat.QR_CODE, BarcodeFormat.CODE_39);
barcodeView.getBarcodeView().setDecoderFactory(new DefaultDecoderFactory(formats));
barcodeView.initializeFromIntent(getIntent());
barcodeView.decodeContinuous(callback);
@Override
public void onClick(View view)
switch (view.getId())
case R.id.flashlight:
toggleTorch();
break;
case R.id.galleryPicker:
pickImage();
break;
private void pickImage()
if (ActivityCompat.checkSelfPermission(this, READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED)
// Create intent for picking a photo from the gallery
Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
if (intent.resolveActivity(getPackageManager()) != null)
intent.setType("image/*");
intent.putExtra("crop", "true");
intent.putExtra("scale", true);
intent.putExtra("aspectX", 16);
intent.putExtra("aspectY", 9);
startActivityForResult(intent, PICK_IMAGE_REQUEST_CODE);
else
ActivityCompat.requestPermissions(
this,
new String[]Manifest.permission.READ_EXTERNAL_STORAGE,
READ_EXTERNAL_STORAGE_REQUEST_CODE);
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults)
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode)
case READ_EXTERNAL_STORAGE_REQUEST_CODE:
if (grantResults[0] == PackageManager.PERMISSION_GRANTED)
// pick image after request permission success
pickImage();
break;
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
if (requestCode == PICK_IMAGE_REQUEST_CODE)
if (resultCode != Activity.RESULT_OK)
return;
if (data != null)
Uri photoUri = data.getData();
// Do something with the photo based on Uri
Bitmap selectedBitmap = null;
try
selectedBitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), photoUri);
AnimatedViewFinder viewFinder = barcodeView.getViewFinder();
Bitmap resizedBitmap = BitMapScaler.scaleToFill(selectedBitmap, viewFinder.getWidth(), viewFinder.getWidth());
barcodeView.scanBitmap(resizedBitmap);
catch (IOException e)
e.printStackTrace();
private void toggleTorch()
if (isTorchEnabled)
barcodeView.setTorchOff();
else
barcodeView.setTorchOn();
private void toggleTorchListener(boolean enableListener)
if (!ZxingUtils.hasFlash(getApplicationContext()))
barcodeView.getFlashlight().setVisibility(View.GONE);
else
if (true)
barcodeView.getFlashlight().setOnClickListener(this);
barcodeView.setTorchListener(this);
else
barcodeView.getFlashlight().setOnClickListener(null);
barcodeView.setTorchListener(null);
@Override
protected void onResume()
super.onResume();
barcodeView.resume();
toggleTorchListener(true);
barcodeView.getGalleryPicker().setOnClickListener(this);
@Override
protected void onPause()
super.onPause();
barcodeView.pause();
toggleTorchListener(false);
barcodeView.getGalleryPicker().setOnClickListener(null);
@Override
public void onTorchOn()
isTorchEnabled = true;
barcodeView.getFlashlight().setImageResource(R.drawable.vector_flash_on);
@Override
public void onTorchOff()
isTorchEnabled = false;
barcodeView.getFlashlight().setImageResource(R.drawable.vector_flash_off);
@Override
public boolean onKeyDown(int keyCode, KeyEvent event)
return barcodeView.onKeyDown(keyCode, event) || super.onKeyDown(keyCode, event);
https://github.com/tiger1990/QrScannerDemo
【讨论】：
【参考方案3】：这是ZXingScannerView 1.9新版本的问题。用户使用旧版本 1.7.2 那么它可以在所有设备上正常工作。
//在你的 build.gradle 中使用这个版本 实现'me.dm7.barcodescanner:zxing:1.7.2'
【讨论】：
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