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I'm trying to develop an app that reads an NFC tag and displays the read data. I took most of t… Read more Illegalstateexception (already Attached) When Opening Nfc Reader App

I have created a class which extends Gallery. There is no onCreate() method in super Class, and I&#… Read more Start Intent Without Oncreate {}

I have created (what I thought was) a simple JAVA card game. In JAVA, the game loads the layout (f… Read more Android Layout Only Showing After Oncreate Method Finishes

In Android (targeting APIs 14-16) I have a MainActivity and a NextActivity. There is no difficulty … Read more Android: Using Getintent() Only Within Oncreate?

Assume my application contains two activity, A and B. Both are limited to portrait in AndroidManife… Read more Android: Avoid Calling Oncreate() When Back From Another Activity

If I press home and come back to my app a little later I will find that the state has been preserve… Read more Android Lock Screen Behaviour

My app's main activity starts fine, works fine, everything is dandy - but if you switch away to… Read more Super.oncreate(savedinstancestate) Crashes When Activity Resumes

I'm dealing with .setVisibility() of a view, inside my main fragment at app start. So what I wa… Read more Android What To Use Instead Of Onrestart() In A Fragment