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POChild Activity in Android
 

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  1. POChild Activity in Android
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    <p>So I have two Activities. The main is called <strong>Main</strong>, and the child one is called <strong>Child</strong>. When a button is clicked in the main activity it triggers the following piece of code:</p> <pre><code>Intent i = new Intent(Main.this, Child.class); Main.this.startActivity(i); </code></pre> <p>That opens the <strong>Child</strong> activity.</p> <p>As soon as I call <strong>finish()</strong> or press the back button within the child activity instead of going back to the main one, the app just closes. Can you give me a hint where the problem might be :(</p> <p><em>P.S.</em> By trial and error I found out that if edit <em>AndroidManifest.xml</em> and add </p> <pre><code>android:theme="@android:style/Theme.Dialog" </code></pre> <p>within the declaration of <strong>Child</strong> the back button and calling <strong>finish()</strong> behaves as expected: closes the child activity and brings the main into focus. The problem is that when I start typing in an <strong>EditText</strong> the screen starts flickering (rather bizzare). So I can't use it as a dialog. My main activity uses the camera, so that might be making problems. Although when the child activity is started, the <strong>onPause</strong> event is fired and it stops the camera until <strong>onResume</strong> is called.</p> <p>Edit:</p> <p>So I tried using <strong>startActivityForResult</strong> and added</p> <pre><code>Toast.makeText(this, "onPause", Toast.LENGTH_SHORT).show(); </code></pre> <p>to the <strong>onPause</strong> and a similar one to the <strong>onResume</strong> methods. When the Child returns <strong>onResume</strong> doesn't get triggered. I even overrided <strong>onActivityResult</strong> and even that doesn't get triggered. :( So bizarre...</p> <p><strong>I think I found the problem but I can't solve it myself</strong></p> <p>When the <strong>Child</strong> activity is activated, <strong>onStop</strong> and immediately after that <strong>onDestroy</strong> are invoked within the <strong>Main</strong> activity. But why?!?</p>
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    1. USMartin Marinov
    1. USMartin Marinov
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    1. COHave you tried `startActivityForResult`?
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      1. USPentium10
    2. COI agree with Pentium10. If your child (Sub) activity should always go back to the Main, then startActivityForResult() should be used.
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      1. USMaximus
    3. COWell, I tried it with no luck :( Is it possible that I did something wrong with the onPause and onResume overrides? When I press back or invoke finish() the screen blinks for a second and the home screen appears but my app is still running in the background...
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      1. USMartin Marinov
 

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