android: device not supported by app- why? -

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i developing camera app. 1 of users complaining device not supported. it's acer a200:

i don't see reason why android market / google play marks app not supported device. know might reason?

here manifest:

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="net.ttttrash.myapp"     android:versioncode="32"     android:versionname="3.2" >      <application         android:icon="@drawable/icon"         android:label="@string/app_name"         android:hardwareaccelerated="true">         <activity             android:name=".cameraactivity"             android:configchanges="keyboard|orientation|keyboardhidden"             android:label="@string/app_name"             android:windowsoftinputmode="adjustpan" >             <intent-filter>                 <action android:name="android.intent.action.main" />                  <category android:name="android.intent.category.launcher" />             </intent-filter>             <intent-filter>                 <action android:name="android.media.action.image_capture" />                  <category android:name="android.intent.category.default" />             </intent-filter>         </activity>         <activity             android:name="net.ttttrash.myapp.preferenceactivity"             android:label="@string/set_preferences" >         </activity>         <activity              android:name="com.google.ads.adactivity"             android:configchanges="keyboard|keyboardhidden|orientation|screenlayout|uimode|screensize|smallestscreensize">         </activity>      </application>      <uses-sdk         android:minsdkversion="7"         android:targetsdkversion="8" />      <uses-permission android:name="android.permission.camera" />     <uses-permission android:name="android.permission.internet" />     <uses-permission android:name="android.permission.write_external_storage" />     <uses-permission android:name="android.permission.access_network_state" />      <uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />  </manifest>

thanks entreco found answer. looked supported devices in app settings. then, comparing feature specifications of not supported tablet (acer iconia a200) supported device (a510 tablet) found answer: a200 not have rear camera. what's def. missing following entry in manifest:

<uses-feature android:name="android.hardware.camera.front" android:required="false" />

enter image description here


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