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Android

Posted by Milan Tailor
Milan Tailor
5,132 Points

Login Activity Self-Destructing App, Starting the App, Extra Credit (Alternative Login) not working...

Hey,

I'm trying to do the extra credit for the first stage of the Self Destruction app. All I have done so far is setup the new template, named LoginActivity2, when I try to change the intent from ' Intent intent = new Intent(this, LoginActivity.class); ' to Intent intent = new Intent(this, LoginActivity2.class); the app crashes on loading.

I have not modified the template at all, but I think it should atleast load the templated activity.

The logcat reports:

12-04 01:52:20.808    3254-3254/ribbit.milantailor.com.ribbit D/dalvikvm﹕ GC_FOR_ALLOC freed 53K, 3% free 3765K/3880K, paused 2ms, total 2ms
12-04 01:52:20.812    3254-3254/ribbit.milantailor.com.ribbit D/dalvikvm﹕ GC_FOR_ALLOC freed 2K, 3% free 3983K/4104K, paused 2ms, total 2ms
12-04 01:52:20.816    3254-3254/ribbit.milantailor.com.ribbit I/dalvikvm-heap﹕ Grow heap (frag case) to 6.367MB for 2536932-byte allocation
12-04 01:52:20.824    3254-3263/ribbit.milantailor.com.ribbit D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 2% free 6461K/6584K, paused 8ms, total 8ms
12-04 01:52:21.176    3254-3254/ribbit.milantailor.com.ribbit D/libEGL﹕ loaded /system/lib/egl/libEGL_genymotion.so
12-04 01:52:21.176    3254-3254/ribbit.milantailor.com.ribbit D/﹕ HostConnection::get() New Host Connection established 0xb94f7ff8, tid 3254
12-04 01:52:21.200    3254-3254/ribbit.milantailor.com.ribbit D/libEGL﹕ loaded /system/lib/egl/libGLESv1_CM_genymotion.so
12-04 01:52:21.200    3254-3254/ribbit.milantailor.com.ribbit D/libEGL﹕ loaded /system/lib/egl/libGLESv2_genymotion.so
12-04 01:52:21.264    3254-3254/ribbit.milantailor.com.ribbit W/EGL_genymotion﹕ eglSurfaceAttrib not implemented
12-04 01:52:21.264    3254-3254/ribbit.milantailor.com.ribbit E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from GradienCache
12-04 01:52:21.268    3254-3254/ribbit.milantailor.com.ribbit E/OpenGLRenderer﹕ MAX_TEXTURE_SIZE: 16384
12-04 01:52:21.276    3254-3254/ribbit.milantailor.com.ribbit E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
12-04 01:52:21.276    3254-3254/ribbit.milantailor.com.ribbit E/OpenGLRenderer﹕ MAX_TEXTURE_SIZE: 16384
12-04 01:52:21.276    3254-3254/ribbit.milantailor.com.ribbit D/OpenGLRenderer﹕ Enabling debug mode 0
12-04 01:52:21.288    3254-3254/ribbit.milantailor.com.ribbit D/AndroidRuntime﹕ Shutting down VM
12-04 01:52:21.288    3254-3254/ribbit.milantailor.com.ribbit W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0xa4cbfb20)
12-04 01:52:21.288    3254-3254/ribbit.milantailor.com.ribbit E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: ribbit.milantailor.com.ribbit, PID: 3254
    java.lang.RuntimeException: Unable to start activity ComponentInfo{ribbit.milantailor.com.ribbit/ribbit.milantailor.com.ribbit.LoginActivity2}: java.lang.NullPointerException
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2184)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
            at android.app.ActivityThread.access$800(ActivityThread.java:135)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5001)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.NullPointerException
            at ribbit.milantailor.com.ribbit.LoginActivity2.onCreate(LoginActivity2.java:66)
            at android.app.Activity.performCreate(Activity.java:5231)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
            at android.app.ActivityThread.access$800(ActivityThread.java:135)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5001)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
            at dalvik.system.NativeStart.main(Native Method)

This maybe useful, line 66 of LoginActivity2 is:

        mPasswordView.setOnEditorActionListener(new TextView.OnEditorActionListener() {
            @Override
            public boolean onEditorAction(TextView textView, int id, KeyEvent keyEvent) {
                if (id == R.id.login || id == EditorInfo.IME_NULL) {
                    attemptLogin();
                    return true;
                }
                return false;
            }
        });

Thanks.