Android-runtime-permission.java

public class PermissionManager {
    
    private Context context;
    private SessionManager sessionManager;

    public PermissionManager(Context context){
        this.context = context;
        sessionManager = new SessionManager(context);
    }

    public  boolean shouldAskPermission() {
        return (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M);
    }
    
    private  boolean shouldAskPermission(Context context, String permission){
        if (shouldAskPermission()) {
            int permissionResult = ActivityCompat.checkSelfPermission(context, permission);
            if (permissionResult != PackageManager.PERMISSION_GRANTED) {
                return true;
            }
        }
        return false;
    }

    public void checkPermission(Context context, String permission, PermissionAskListener listener){
        if (shouldAskPermission(context, permission)){
            if (ActivityCompat.shouldShowRequestPermissionRationale((AppCompatActivity)context,permission)) {
                listener.onPermissionPreviouslyDenied();
            } else {
                if (sessionManager.isFirstTimeAsking(permission)) {
                    sessionManager.firstTimeAsking(permission, false);
                    listener.onNeedPermission();
                } else {
                    listener.onPermissionPreviouslyDeniedWithNeverAskAgain();
                }
            }
        } else {
            listener.onPermissionGranted();
        }
    }

    public interface PermissionAskListener {
        void onNeedPermission();
        void onPermissionPreviouslyDenied();
        void onPermissionPreviouslyDeniedWithNeverAskAgain();
        void onPermissionGranted();
    }
}


//
    public class SessionManager {

    private SharedPreferences sharedPreferences;
    private SharedPreferences.Editor editor;
    private final String MY_PREF = "my_preferences";

    public SessionManager(Context context) {
        sharedPreferences = context.getSharedPreferences(MY_PREF, MODE_PRIVATE);
    }

    public void firstTimeAsking(String permission, boolean isFirstTime) {
        doEdit();
        editor.putBoolean(permission, isFirstTime);
        doCommit();
    }

    public boolean isFirstTimeAsking(String permission) {
        return sharedPreferences.getBoolean(permission, true);
    }

    private void doEdit() {
        if (editor == null) {
            editor = sharedPreferences.edit();
        }
    }

    private void doCommit() {
        if (editor != null) {
            editor.commit();
            editor = null;
        }
    }
}