The exception only occurs in Android 7.0 Nougat (emulator) devices.
java.lang.SecurityException: MODE_WORLD_READABLE no longer supported
My code:
public void SessionMaintainence(Context context) {
this.context = context;
preferences = context.getSharedPreferences(PREF_NAME, Context.MODE_WORLD_READABLE);
editor = preferences.edit();
editor.commit();
}
LogCat:
> E/AndroidRuntime: FATAL EXCEPTION: main
> Process: burpp.av.feedback, PID: 2796
> java.lang.RuntimeException: Unable to create application
> burpp.av.feedback.FeedbackApplication: java.lang.SecurityException:
> MODE_WORLD_READABLE no longer supported
> at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5364)
> at android.app.ActivityThread.-wrap2(ActivityThread.java)
> at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1528)
> at android.os.Handler.dispatchMessage(Handler.java:102)
> at android.os.Looper.loop(Looper.java:154)
> at android.app.ActivityThread.main(ActivityThread.java:6077)
> at java.lang.reflect.Method.invoke(Native Method)
> at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
> at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
> Caused by: java.lang.SecurityException: MODE_WORLD_READABLE no longer supported
> at android.app.ContextImpl.checkMode(ContextImpl.java:2162)
> at android.app.ContextImpl.getSharedPreferences(ContextImpl.java:363)
> at android.app.ContextImpl.getSharedPreferences(ContextImpl.java:358)
> at android.content.ContextWrapper.getSharedPreferences(ContextWrapper.java:164)
> at burpp.av.feedback.support.SessionMaintainence.<init>(SessionMaintainence.java:63)
> at burpp.av.feedback.FeedbackApplication.onCreate(FeedbackApplication.java:43)
> at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1024)
World-readable files can be a security flaw. So android first deprecated it and then completely removed it. MODE_WORLD_READABLE
was deprecated in versions till Android M
. But in Android N
it is no longer supported and throws SecurityException
. So try a different mode. I used Context.MODE_PRIVATE
and it worked.