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izd / kiva

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Avoid unsafe reference to activity #74

Closed zackhsi closed 9 years ago

zackhsi commented 9 years ago

If the API call fails after the fragment has detached from its activity, we get an error:

04-10 01:26:09.513    7454-7454/com.zackhsi.kiva E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.zackhsi.kiva, PID: 7454
    java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources android.content.Context.getResources()' on a null object reference
            at android.widget.Toast.<init>(Toast.java:101)
            at android.widget.Toast.makeText(Toast.java:250)
            at com.zackhsi.kiva.fragments.LoanListViewFragment$2.onFailure(LoanListViewFragment.java:176)
            at com.loopj.android.http.JsonHttpResponseHandler.onFailure(JsonHttpResponseHandler.java:200)
            at com.loopj.android.http.AsyncHttpResponseHandler.handleMessage(AsyncHttpResponseHandler.java:319)
            at com.loopj.android.http.AsyncHttpResponseHandler$ResponderHandler.handleMessage(AsyncHttpResponseHandler.java:138)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5221)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)