Check the runtime permission of app in android device

Question

Following code snippet is what I am using in order to understand the permission set by the user as in newer android devices permissions can be tweaked for specific app from settings.

I want to alert a user to give permission to avoid app crashing But the following snippet is always returning true for me. What am I doing wrong?

//If authorisation not granted for camera
boolean permission = (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA)==PackageManager.PERMISSION_GRANTED);


if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
    //ask for authorisation
    //Manifest.permission.CAMERA
    if (ActivityCompat.shouldShowRequestPermissionRationale(this,
            Manifest.permission.CAMERA)) {
        showExplanation("Permission Needed", "Rationale", Manifest.permission.CAMERA, REQUEST_PERMISSION_CAMERA);
    }
    else
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}, REQUEST_PERMISSION_CAMERA);
}
else
    try {
        //releasing camera if it's already in use
        releaseCamera();
        camera = Camera.open(camId);
}catch (Exception e)
{
    e.printStackTrace();
}

*But the following snippet is always returning true for me* you have either granted already the permission or have a pre-marshmallow version of android on your device — Blackbelt, Nov 28 '16 at 13:25
I am using nexus 5 Marshmallow. I tried multiple times setting permission on and off. permission is always returned as true for me however the app crashes (when permission is not given) — Sudip Bhandari, Nov 28 '16 at 13:29
refer this http://stackoverflow.com/questions/34342816/android-6-0-multiple-permissions — Radhey, Nov 28 '16 at 13:32

score 1 · Answer 1 · edited Nov 28 '16 at 18:37

1

boolean permission = (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA)==PackageManager.PERMISSION_GRANTED);

if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
    //ask for authorisation
    //Manifest.permission.CAMERA
    if (ActivityCompat.shouldShowRequestPermissionRationale(this,
            Manifest.permission.READ_PHONE_STATE)) {
        showExplanation("Permission Needed", "Rationale", Manifest.permission.READ_PHONE_STATE, REQUEST_PERMISSION_CAMERA);
    }
    else
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}, REQUEST_PERMISSION_CAMERA);
}
else{
    try {
        //releasing camera if it's already in use
        releaseCamera();
        camera = Camera.open(camId);
}catch (Exception e)
{
    e.printStackTrace();
}}   /////// put your else condition in braces

edited Nov 28 '16 at 18:37

Dani M

1,173
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answered Nov 28 '16 at 13:55

Ak9637

990
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Code is useless without explanation – Tim Nov 28 '16 at 13:59
@Tim Castelijins i have just edited the posted code,it is pretty self explanatory – Ak9637 Nov 28 '16 at 14:00
I can't find what you changed, please tell. And please explain why you changed it – Tim Nov 28 '16 at 14:03
ActivityCompat instead of ContextCompat , as only an activity can check for permissions . ty @Tim would make sure next time i provide explanation even for changes :) – Ak9637 Nov 28 '16 at 14:04
check https://developer.android.com/reference/android/support/v4/content/ContextCompat.html#checkSelfPermission(android.content.Context, java.lang.String) – Tim Nov 28 '16 at 14:05
@Tim i agree,please let me know if there is any difference between ContextCompat and ActivityCompat ..... as the permission model only works for me when i use the latter only – Ak9637 Nov 28 '16 at 14:11
depends on the sdk version you use. ContextCompat can be used for 23+ – Tim Nov 28 '16 at 14:14
offcorse,the permission model has been introduced from 23+ only, but still ActivityCompat works for me but not ContextCompat,why ? ......can u help me with the reason ? @ Tim – Ak9637 Nov 28 '16 at 14:15

score 0 · Accepted Answer · answered Jan 11 '17 at 07:34

0

I was facing this issue because this feature is available only in api level 23 and above. I was compiling on 22.

answered Jan 11 '17 at 07:34

Sudip Bhandari

2,165
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Check the runtime permission of app in android device

2 Answers2