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POHow to handle android child activity not finishing
 

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  1. POHow to handle android child activity not finishing
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    <p>I've got an Android app that I want other apps to be able to launch via an intent. This allows other apps to interact with mine and provide initial inputs etc.</p> <p>The calling App (call it App-A) does the following:</p> <pre><code>Intent intent = new Intent("com.myapp.dosomething"); intent.putExtra("com.myapp.value1", "1.25"); intent.putExtra("com.myapp.value2", "bob"); startActivity(intent); </code></pre> <p>My activity is started with the intent filter:</p> <pre><code>&lt;intent-filter&gt; &lt;action android:name="com.myapp.dosomething" /&gt; &lt;category android:name="android.intent.category.DEFAULT" /&gt; &lt;/intent-filter&gt; </code></pre> <p>Everything works fine if the user goes through the normal flow of my app. The user does stuff and then when I know the user is done I call finish() on my activity. Everything is dandy.</p> <p>However, if part way through doing stuff in my app the user hits the home button instead of finishing the task we end up with a major problem. If they try and restart App-A from the launcher my app pops up instead. The user can never get back to App-A without force killing my app. Even worse, my app is specifically designed to not retain any data between launches and when re-launched in this way it also doesn't get any of the extra data originally passed in so my app has no way to know that this other app is still waiting on mine.</p> <p>How do I set things up so that App-A doesn't sit there waiting on my app? It should be able to continue running regardless of what my app does. If my app crashes, or doesn't return a value I don't want the calling app to be hung forever.</p> <p>Any ideas?</p> <p>Thanks.</p>
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    1. CO"The user can never get back to App-A without force killing my app" - Why can't they hit the BACK button? It works for me in a similar situation.
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    2. COWell, as a user if I start app A I don't expect app B to come up, regardless of what the apps were doing the last time I ran them. Also, for various reasons we're currently blocking the back button (this will be changing soon, it was a bad design decision at the start of the project). But regardless, our app shouldn't start when you try and launch app-a in the first place. There must be some mechanism for an activity dealing with a child activity going awol!?
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    3. COOK - I appreciate you want to clean things up but that's how Android works by default. In my case my app displays a list of videos on a user's home PC. If they select a video my app fires up a 3rd party video player app to stream the video. If the user hits HOME and then later start my app again it resumes playing the video with the 3rd party app. In other words, the user's last action with my app was to start a video so why shouldn't that be what they go back to? BTW, it was me who upvoted your question as I'm curious about an answer even though I don't think default behaviour is wrong.
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