android - App not compatible with Nexus 7 and Acer Iconia a210 -

i know has been asked few times why app not compatible nexus 7 , acer iconia a210?

i didn't find working solution in existing questions else missing?

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"   package="org.mw88.witness.lite"   android:versioncode="5"   android:versionname="2.0">  <uses-sdk      android:minsdkversion="14"      android:targetsdkversion="15"  />  ...  <supports-screens android:resizeable="true" />  <uses-permission android:name="android.permission.camera" android:required="false" /> <uses-permission android:name="android.permission.write_external_storage" /> <uses-permission android:name="android.permission.system_alert_window" /> <uses-permission android:name="android.permission.get_tasks" />  <uses-feature android:name="android.hardware.camera.front" android:required="false"/> <uses-feature android:name="android.hardware.camera.autofocus" android:required="false"/> 

the problem may <supports-screen> tag in manifest.

read descriptions attributes in tag here screen supporting attributes. attributes android:smallscreens,android:normalscreens default value true expected.

but attributes android:largescreens , android:xlargescreens, default values varies.

the default value varies between versions, it's better if explicitly declare attribute @ times.

as specified devices tablets having large screens, stating <support-screen> tag may trigger in not compatible app in these devices.

so either give necessary attribues or remove <support-screens> tag. not required field given.

note:

• if giving <support-screen> tag, remove android:resizable attribute. deprecated.
• remove android:required="false" <uses-permission>. it'll not work.