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POAndroid drawable resource id conflict?
 

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  1. POAndroid drawable resource id conflict?
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    <p>I've set up the /android project of ZXing 1.7 as a library referenced by my main android app project. As a quick test / proof of concept, I have used the CaptureActivity, in the same manner as described here: <a href="http://damianflannery.wordpress.com/2011/06/13/integrate-zxing-barcod" rel="nofollow">http://damianflannery.wordpress.com/2011/06/13/integrate-zxing-barcod</a>... </p> <p>Mostly, things work well, I can launch the CaptureActivity and receive the scanned data in my activity that launched it. However, I get some really strange behaviour, which I think may be related to resource IDs conflicting between my project and the /android ZXing project. This will take some explaining so please bear with me... </p> <p>I launch the CaptureActivity with this code:</p> <pre><code>Button scanBtn = (Button)findViewById(R.id.mainmenu_btn_scan); scanBtn.setOnClickListener( new View.OnClickListener() { public void onClick(View v) { Intent i = new Intent("com.google.zxing.client.android.SCAN"); i.putExtra("SCAN_MODE", "QR_CODE_MODE"); startActivityForResult(i, SCAN_CODE); } }); </code></pre> <p><code>mainmenu_btn_scan</code> is defined in menu.xml:</p> <pre><code>&lt;LinearLayout android:id="@+id/mainmenu_view" style="@style/MainMenu" xmlns:android="http://schemas.android.com/apk/res/android"&gt; ... &lt;Button android:id="@+id/mainmenu_btn_scan" android:drawableTop="@drawable/btn_scan_drawable" style="@style/MainMenuButton" android:text="Scan"/&gt; ... &lt;/LinearLayout&gt; </code></pre> <p>btn_scan_drawable.xml is in /drawable, and is a drawable selector:</p> <pre><code>&lt;selector xmlns:android="http://schemas.android.com/apk/res/android"&gt; &lt;item android:drawable="@drawable/scan_btn_pressed" android:state_focused="true" android:state_pressed="true" /&gt; ... &lt;/selector&gt; </code></pre> <p>The stange problem is this: when I hold the phone in a <em>lanscape</em> orientation and launch the CaptureActivity, I see the scan_btn_pressed image stretched across the display, and another copy of it also stretched across the "Place a barcode inside the viewfinder rectangle text...". This only occurs when I launch the activity while holding the phone in <em>landscape</em> orientation.</p> <p>I discovered that if I replace</p> <pre><code>android:drawableTop="@drawable/btn_scan_drawable" </code></pre> <p>with</p> <pre><code>android:drawableTop="@drawable/scan_btn_pressed" </code></pre> <p>The problem goes away and everything works perfectly, but I want to get it working with the selector (and understand why the problem occurs). How can a drawable from my activity's UI mysteriously show up in another activity? I'm new to Android development, but I've been googling and working at this issue all day and I can't seem to find out why this would be happening apart from some vague references to resource ID conflicts in the android docs.</p> <p>Note: I am using CaptureActivity as a rapid prototype / proof of concept only. I will implement my own activity leveraging the ZXIng library for the final app.</p>
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