当我在Asus_Z00AD（ver-5.0）中运行应用程序时，二维码扫描功能完美无缺，但当我在任何其他手机上运行时，如moto-g（ver-6.0），它显示一个空白屏幕 别无其他.. 怎么办.. plz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'*/
}
答案 0 :(得分：0)
我正在使用相同的库，它在版本6.0和7.0设备上工作正常，但是对于较低版本的设备有一些问题。我也在moto g4上测试它在g4和g5上工作正常。
你的代码完全正确我正在做同样的事情，做一件事来处理它进行扫描为扫描仪视图制作单独的活动并从handleResult（）方法获取你想要的数据，因为空白屏问题导致可能是由于to setcontentView覆盖扫描器view.try再次这样，如果你需要代码，那么我也可以共享代码......
答案 1 :(得分：0)
请检查此演示。
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);
}
}
答案 2 :(得分：0)
这是ZXingScannerView新版本1.9中的问题。用户旧版本1.7.2，则可以在所有设备上正常工作。
//在build.gradle中使用此版本 实施'me.dm7.barcodescanner：zxing：1.7.2'