MANIFEST PERMISSIONS WON’T WORK on Android 6.0
[java]
Failed to open camera
java.lang.RuntimeException: Fail to connect to camera service
at android.hardware.Camera.open(Camera.java:499)
at com.google.zxing.client.android.camera.open.OpenCameraInterface.open(OpenCameraInterface.java:83)
at com.journeyapps.barcodescanner.camera.CameraManager.open(CameraManager.java:121)
at com.journeyapps.barcodescanner.camera.CameraInstance$3.run(CameraInstance.java:158)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:168)
at android.os.HandlerThread.run(HandlerThread.java:61)
[/java]

解決方法只要加入以下程式碼即可
[java]
@Override
protected void onStart() {
super.onStart();

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
int hasCameraPermission = checkSelfPermission(Manifest.permission.CAMERA);
List<String> permissions = new ArrayList<String>();

if (hasCameraPermission != PackageManager.PERMISSION_GRANTED) {
permissions.add(Manifest.permission.CAMERA);
}
if (!permissions.isEmpty()) {
requestPermissions(permissions.toArray(new String[permissions.size()]), 111);
}
}
}
[/java]
[java]
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {

switch (requestCode) {
case 111: {
for (int i = 0; i < permissions.length; i++) {
if (grantResults[i] == PackageManager.PERMISSION_GRANTED) {

} else if (grantResults[i] == PackageManager.PERMISSION_DENIED) {

}
}
}
break;
default: {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
}
[/java]