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android: runtime permission dialog for camera

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SomberNight 2018-11-24 03:29:50 +01:00
parent f095b35663
commit 29b697df1a
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1 changed files with 53 additions and 12 deletions
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65
electrum/gui/kivy/data/java-classes/org/electrum/qr/SimpleScannerActivity.java
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@ -4,6 +4,9 @@ import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.content.Intent;
import android.support.v4.app.ActivityCompat;
import android.Manifest;
import android.content.pm.PackageManager;
import java.util.Arrays;
@ -13,28 +16,35 @@ import com.google.zxing.Result;
import com.google.zxing.BarcodeFormat;
public class SimpleScannerActivity extends Activity implements ZXingScannerView.ResultHandler {
private ZXingScannerView mScannerView;
final String TAG = "org.electrum.SimpleScannerActivity";
private static final int MY_PERMISSIONS_CAMERA = 1002;
@Override
public void onCreate(Bundle state) {
super.onCreate(state);
mScannerView = new ZXingScannerView(this); // Programmatically initialize the scanner view
mScannerView.setFormats(Arrays.asList(BarcodeFormat.QR_CODE));
setContentView(mScannerView); // Set the scanner view as the content view
}
private ZXingScannerView mScannerView = null;
final String TAG = "org.electrum.SimpleScannerActivity";
@Override
public void onResume() {
super.onResume();
mScannerView.setResultHandler(this); // Register ourselves as a handler for scan results.
mScannerView.startCamera(); // Start camera on resume
if (this.hasPermission()) {
this.startCamera();
} else {
this.requestPermission();
}
}
@Override
public void onPause() {
super.onPause();
mScannerView.stopCamera(); // Stop camera on pause
if (null != mScannerView) {
mScannerView.stopCamera(); // Stop camera on pause
}
}
private void startCamera() {
mScannerView = new ZXingScannerView(this); // Programmatically initialize the scanner view
mScannerView.setFormats(Arrays.asList(BarcodeFormat.QR_CODE));
setContentView(mScannerView); // Set the scanner view as the content view
mScannerView.setResultHandler(this); // Register ourselves as a handler for scan results.
mScannerView.startCamera(); // Start camera on resume
}
@Override
@ -45,4 +55,35 @@ public class SimpleScannerActivity extends Activity implements ZXingScannerView.
setResult(Activity.RESULT_OK, resultIntent);
this.finish();
}
private boolean hasPermission() {
return (ActivityCompat.checkSelfPermission(this,
Manifest.permission.CAMERA)
== PackageManager.PERMISSION_GRANTED);
}
private void requestPermission() {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.CAMERA},
MY_PERMISSIONS_CAMERA);
}
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_CAMERA: {
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay!
this.startCamera();
} else {
// permission denied
this.finish();
}
return;
}
}
}
}