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I tried implementing camera permissions in this way:
private void checkCameraPermissions() {
if(checkCameraHardware(this)) {
if (checkSelfPermission(Manifest.permission_group.camera)
!= PackageManager.PERMISSION_GRANTED) {
Crashlytics.log("Requesting camera permission");
// Should we show an explanation?
if (shouldShowRequestPermissionRationale(
Manifest.permission_group.camera)) {
// Explain to the user why we need to use the camera
showRationaleForCameraUse();
}
requestPermissions(new String[]{Manifest.permission_group.camera},
Constants.MY_PERMISSIONS_REQUEST_CAMERA_GROUP);
// MY_PERMISSIONS_REQUEST_CAMERA_GROUP is an
// app-defined int constant
} else {
startApp();
}
}else{
showNoCameraAvailableAlert();
}
}
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case Constants.MY_PERMISSIONS_REQUEST_CAMERA_GROUP: {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay!
// start the app
startApp();
} else {
// permission denied, boo!
// leav the app!
showNoCameraAvailableAlert();
}
return;
}
// other 'switch' lines to check for other
// permissions this app might request
}
}
and got this following error:
java.lang.NoSuchMethodError: No virtual method checkSelfPermission(Ljava/lang/String;)I in class Lim/emu/app/emu/app/view/splash/SplashActivity; or its super classes (declaration of 'im.emu.app.emu.app.view.splash.SplashActivity' appears in /data/app/im.emu.app.emu.test-1/base.apk)
at im.emu.app.emu.app.view.splash.SplashActivity.checkCameraPermissions(SplashActivity.java:74)
at im.emu.app.emu.app.view.splash.SplashActivity.onCreate(SplashActivity.java:52)
at android.app.Activity.performCreate(Activity.java:5977)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2258)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2367)
at android.app.ActivityThread.access$800(ActivityThread.java:148)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1283)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5274)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:909)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:704)
08-30 16:34:10.801 17087-17357/im.emu.app.emu.test I/Fabric﹕ Crashlytics report upload complete: 55E30629033A-0001-42BF-296ED8AC703A.cls
Any ideas how I can fix this? p.s. if any more information is needed please ask
823
To check if the user has already granted your app a particular permission, pass that permission into the ContextCompat. checkSelfPermission() method. This method returns either PERMISSION_GRANTED or PERMISSION_DENIED , depending on whether your app has the permission.
Runtime permissions prevent apps from gaining access to private data without a user's consent, and provide them with additional context and visibility into the types of permissions that applications are either seeking, or have been granted.
In case one or more permissions are not granted, ActivityCompat. requestPermissions() will request permissions and the control goes to onRequestPermissionsResult() callback method. You should check the value of shouldShowRequestPermissionRationale() flag in onRequestPermissionsResult() callback method.
You should be running the code on device running previous versions. You have to use ContextCompat.checkSelfPermission() instead.
146
Careful with
'shouldShowRequestPermissionRationale(
Manifest.permission_group.camera)'
I had an issue with the permissions group where it wanted the individual permission and not the group and would throw an exception if you used the other.
22
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