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getActionBar() returns null

I'm having an odd problem. I am making an app with targetsdk 13. 24 Answers 24 ...
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Deleting a Google App Engine application

Is it possible to delete an GAE application after it has been created? 11 Answers 11 ...
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Project structure for Google App Engine

I started an application in Google App Engine right when it came out, to play with the technology and work on a pet project that I had been thinking about for a long time but never gotten around to starting. The result is BowlSK . However, as it has grown, and features have been added, it has got...
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“Rate This App”-link in Google Play store app on the phone

I'd like to put a "Rate This App"-link in an Android App to open up the app-listing in the user's Google Play store app on their phone. ...
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How to enable file sharing for my app?

I have an image editing app where users can apply effects to photos. How could I enable it so that users can see my app in iTunes in the File Sharing tab and then just drag+drop photos to the app? ...
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How do I get the APK of an installed app without root access?

I'm trying to extract the APK file of an installed Android app WITHOUT root permissions. 11 Answers ...
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How do you add an in-app purchase to an iOS application?

How do you add an in-app purchase to an iOS app? What are all the details and is there any sample code? 5 Answers ...
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Could not launch process launch failed: timed out waiting for app to launch

I am trying to launch my app on device. It is launching successfully on the simulator. 22 Answers ...
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Python Flask, how to set content type

... Try like this: from flask import Response @app.route('/ajax_ddl') def ajax_ddl(): xml = 'foo' return Response(xml, mimetype='text/xml') The actual Content-Type is based on the mimetype parameter and the charset (defaults to UTF-8). Response (and request) ob...
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How to detect when an Android app goes to the background and come back to the foreground

I am trying to write an app that does something specific when it is brought back to the foreground after some amount of time. Is there a way to detect when an app is sent to the background or brought to the foreground? ...