quyền Yes đã thay đổi trên Android M. Quyền hiện đang yêu cầu trong thời gian chạy như trái ngược với thời gian cài đặt trước để Android M.
Bạn có thể kiểm tra các tài liệu here
This release introduces a new permissions model, where users can now directly manage app permissions at runtime. This model gives users improved visibility and control over permissions, while streamlining the installation and auto-update processes for app developers. Users can grant or revoke permissions individually for installed apps.
On your apps that target Android 6.0 (API level 23) or higher, make sure to check for and request permissions at runtime. To determine if your app has been granted a permission, call the new checkSelfPermission() method. To request a permission, call the new requestPermissions() method. Even if your app is not targeting Android 6.0 (API level 23), you should test your app under the new permissions model.
For details on supporting the new permissions model in your app, see Working with System Permissionss. For tips on how to assess the impact on your app, see Permissions Best Practices.
Để kiểm tra các điều khoản bạn phải kiểm tra như thế này, được lấy từ github
public class MainActivity extends SampleActivityBase
implements ActivityCompat.OnRequestPermissionsResultCallback {
public static final String TAG = "MainActivity";
/**
* Id to identify a camera permission request.
*/
private static final int REQUEST_CAMERA = 0;
// Whether the Log Fragment is currently shown.
private boolean mLogShown;
private View mLayout;
/**
* Called when the 'show camera' button is clicked.
* Callback is defined in resource layout definition.
*/
public void showCamera(View view) {
// Check if the Camera permission is already available.
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA)
!= PackageManager.PERMISSION_GRANTED) {
// Camera permission has not been granted.
requestCameraPermission();
} else {
// Camera permissions is already available, show the camera preview.
showCameraPreview();
}
}
/**
* Requests the Camera permission.
* If the permission has been denied previously, a SnackBar will prompt the user to grant the
* permission, otherwise it is requested directly.
*/
private void requestCameraPermission() {
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.CAMERA)) {
// Provide an additional rationale to the user if the permission was not granted
// and the user would benefit from additional context for the use of the permission.
// For example if the user has previously denied the permission.
Snackbar.make(mLayout, R.string.permission_camera_rationale,
Snackbar.LENGTH_INDEFINITE)
.setAction(R.string.ok, new View.OnClickListener() {
@Override
public void onClick(View view) {
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.CAMERA},
REQUEST_CAMERA);
}
})
.show();
} else {
// Camera permission has not been granted yet. Request it directly.
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA},
REQUEST_CAMERA);
}
}
/**
* Display the {@link CameraPreviewFragment} in the content area if the required Camera
* permission has been granted.
*/
private void showCameraPreview() {
getSupportFragmentManager().beginTransaction()
.replace(R.id.sample_content_fragment, CameraPreviewFragment.newInstance())
.addToBackStack("contacts")
.commit();
}
/**
* Callback received when a permissions request has been completed.
*/
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
@NonNull int[] grantResults) {
if (requestCode == REQUEST_CAMERA) {
// Received permission result for camera permission.est.");
// Check if the only required permission has been granted
if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// Camera permission has been granted, preview can be displayed
Snackbar.make(mLayout, R.string.permision_available_camera,
Snackbar.LENGTH_SHORT).show();
} else {
Snackbar.make(mLayout, R.string.permissions_not_granted,
Snackbar.LENGTH_SHORT).show();
}
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mLayout = findViewById(R.id.sample_main_layout);
if (savedInstanceState == null) {
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
RuntimePermissionsFragment fragment = new RuntimePermissionsFragment();
transaction.replace(R.id.sample_content_fragment, fragment);
transaction.commit();
}
}
}
Hãy thử cách này có thể giúp bạn: -http: //stackoverflow.com/a/41221852/5488468 –