Rare chrashes where mArgs causes a null pointer exception

[sithwarrior]

For our App, we are seeing some crashes in our Android ANR console, and they point to mArgs being null.

You can see it points to onCreate line 67

Exception java.lang.RuntimeException: at android.app.ActivityThread.performLaunchActivity (ActivityThread.java:3751) at android.app.ActivityThread.handleLaunchActivity (ActivityThread.java:3919) at android.app.servertransaction.LaunchActivityItem.execute (LaunchActivityItem.java:103) at android.app.servertransaction.TransactionExecutor.executeCallbacks (TransactionExecutor.java:135) at android.app.servertransaction.TransactionExecutor.execute (TransactionExecutor.java:95) at android.app.ActivityThread$H.handleMessage (ActivityThread.java:2311) at android.os.Handler.dispatchMessage (Handler.java:111) at android.os.Looper.loopOnce (Looper.java:238) at android.os.Looper.loop (Looper.java:357) at android.app.ActivityThread.main (ActivityThread.java:8090) at java.lang.reflect.Method.invoke at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:548) at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1026) Caused by java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String org.json.JSONArray.getString(int)' on a null object reference at com.sarriaroman.PhotoViewer.PhotoActivity.onCreate (PhotoActivity.java:67) at android.app.Activity.performCreate (Activity.java:8232) at android.app.Activity.performCreate (Activity.java:8212) at android.app.Instrumentation.callActivityOnCreate (Instrumentation.java:1331) at android.app.ActivityThread.performLaunchActivity (ActivityThread.java:3724)

com.sarriaroman.PhotoViewer.PhotoActivity.onCreate (PhotoActivity.java:67

I think this might be cause by how mArgs is being assigned, so I did a PR where mArgs are assigned by putExtra instead.

#233