Develop Reference

why i can my App not starting or see over App menu?

I have a problem.
I have a signed apk generated and installed but
I can't start the App from installing and I can't see it in the app menu.
I can only see it in the settings app menu.
Why cant I see it or starting?
The app can be started via the debugger.
Can you help me?
The operating system is Android 7 and 5.
Here is my manifesto:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.xxxxxx"
android:versionCode="12"
android:versionName="4.0.0">
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.NFC"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.DISABLE_KEYGUARD" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.READ_PROFILE" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.FLASHLIGHT" />
<uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CLEAR_APP_CACHE" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="com.android.browser.permission.READ_HISTORY_BOOKMARKS" />
<uses-permission android:name="com.android.browser.permission.WRITE_HISTORY_BOOKMARKS" />
<uses-permission android:name="android.permission.SET_WALLPAPER" />
<uses-feature
android:name="android.hardware.camera"
android:required="true" />
<uses-feature
android:name="android.hardware.camera.front"
android:required="true" />
<uses-feature
android:name="android.hardware.camera.autofocus"
android:required="false" />
<uses-feature
android:name="android.hardware.camera.flash"
android:required="false" />
<uses-feature
android:name="android.hardware.screen.portrait"
android:required="true" />
<uses-feature
android:name="android.hardware.wifi"
android:required="false" />
<uses-feature
android:name="android.hardware.touchscreen"
android:required="true" />
<supports-screens
android:anyDensity="true"
android:largeScreens="true"
android:normalScreens="true"
android:smallScreens="true"
android:xlargeScreens="true" />
<application
android:name="com.control.xxxx.xxxxx"
android:allowBackup="true"
android:hardwareAccelerated="false"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:largeHeap="true"
android:persistent="true"
android:theme="#style/AppTheme">
<!-- Activities -->
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<action android:name="android.nfc.action.NDEF_DISCOVERED"/>
<category android:name="android.intent.category.DEFAULT"/>
<data android:mimeType="text/plain"/>
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".ScannerActivity"
android:label="#string/title_activity_qrcode_scanner"
android:noHistory="true"
android:screenOrientation="portrait" />
<activity
android:name=".HelpActivity"
android:label="#string/help_title"
android:noHistory="true"
android:screenOrientation="portrait"
android:theme="#android:style/Theme.Holo" />
<activity
android:name="com.control.installation.ConfigActivity"
android:label="#string/install_title"
android:screenOrientation="portrait"
android:theme="#android:style/Theme.Holo"
android:windowSoftInputMode="stateHidden|adjustPan" />
<activity
android:name=".CameraHideActivity"
android:label="#string/title_activity_camera_hide"
android:noHistory="true"
android:screenOrientation="portrait" />
<activity
android:name=".ProjectListActivity"
android:label="#string/title_activity_project_list"
android:noHistory="true"
android:screenOrientation="portrait" />
<activity
android:name="com.control.camerahidetexts.CamHideConfiguratorActivity"
android:label="#string/title_config_hideactivity"
android:noHistory="true"
android:screenOrientation="portrait"
android:theme="#android:style/Theme.DeviceDefault.Dialog" />
<activity
android:name="com.control.personalmessages.PersMsgActivity"
android:label="#string/pm_title"
android:noHistory="true"
android:screenOrientation="portrait" />
<activity
android:name="com.control.language.LanguageActivity"
android:label="#string/title_languageactivity"
android:noHistory="true"
android:screenOrientation="portrait"
android:theme="#android:style/Theme.DeviceDefault.Dialog" />
<activity
android:name=".ButtonActivity"
android:label="#string/button_settings"
android:screenOrientation="portrait"
android:theme="#android:style/Theme.Holo" />
<!-- Receivers -->
<receiver android:name="com.control.personalmessages.PersMsgReceiver" />
<receiver android:name="com.control.broadcastreceiver.AppRestartReceiver" />
<receiver android:name="com.control.camerahidetexts.CamHideConfigTextsReceiver" />
<receiver android:name="com.control.livepackets.LivepaketReceiver" />
<receiver android:name="com.control.projecttransponderlists.ListUpdateReceiver" />
<receiver android:name="com.control.timestamps.TimestampReceiver" />
<receiver android:name="com.control.projecttransponderlists.ListUpdateDoneReceiver" />
<receiver android:name="com.control.log.LogReceiver" />
<receiver android:name="com.control.broadcastreceiver.BootUpReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
<!-- Services -->
<service android:name="com.control.personalmessages.SetPersonalMessagesToReadService" />
<service android:name="com.control.personalmessages.DownloadPersMsgService" />
<service android:name="com.control.personalmessages.FinishPMDownloadService" />
<service android:name="com.control.camerahidetexts.CamHideConfigTextsService" />
<service android:name="com.control.projecttransponderlists.ProjectListService" />
<service android:name="com.control.projecttransponderlists.TransponderListService" />
<service android:name="com.control.projecttransponderlists.LinkTransponderProjectListService" />
<service android:name="com.control.projecttransponderlists.ListUpdateService" />
<service android:name="com.control.projecttransponderlists.ListUpdateDoneService" />
<service android:name="com.control.timestamps.TimestampService" />
<service android:name="com.control.log.LogSendService" />
<service android:name="com.control.livepackets.LivepaketService" />
</application>
Update
i found the problem, it was android:mimeType but why?
Can you explain it to me?

You probably forgot launch mode. Write this in your AndroidManifest.xml inside application element
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
replace .MainActivity with your activity name

"C2D_message is not unique" while trying to make sign apk

I'm trying to release an APK and while I'm trying to Generate sign APK I get this error
Error:Error: Permission name C2D_MESSAGE is not unique (appears in both com.company.myApp.permission.C2D_MESSAGE and com.company.myApp2.permission.C2D_MESSAGE) [UniquePermission]
and here is my manifest file:
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.company.myApp">
<permission
android:name="com.company.myApp.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<supports-screens android:smallScreens="true" />
<supports-screens android:normalScreens="true" />
<supports-screens android:largeScreens="true" />
<supports-screens android:xlargeScreens="true" />
<supports-screens android:anyDensity="true" />
<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
<uses-permission android:name="android.permission.WRITE_SECURE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_CONFIGURATION" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<!--<uses-permission android:name="android.permission.INTERNET" />-->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.GET_TASKS" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="com.company.myApp.permission.MAPS_RECEIVE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.CLEAR_APP_CACHE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<permission
android:name="com.company.myApp.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-permission android:name="com.company.myApp.permission.C2D_MESSAGE" />
<!-- App receives GCM messages. -->
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<!-- GCM requires a Google account. -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<!-- Keeps the processor from sleeping when a message is received. -->
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:name="com.company.myApp.TruckApplication"
android:allowBackup="true"
android:icon="#drawable/myApp_logo"
android:label="#string/app_name"
android:largeHeap="true"
android:sharedUserId="android.uid.system"
android:theme="#style/AppTheme" >
<uses-library android:name="com.google.android.maps" />
<activity
android:name="com.company.myApp.Authenticate_user_Activity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.company.myApp.Login_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.myApp.SubmitWaiver_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.myApp.PrepStopChoice"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<!--<activity-->
<!--android:name="com.company.myApp.Surveyold_Activity"-->
<!--android:configChanges="keyboardHidden|orientation|screenSize"-->
<!--android:screenOrientation="portrait" >-->
<!--</activity>-->
<activity
android:name="com.company.myApp.GetStops_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.myApp.Load_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.myApp.AddComment_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait"
android:windowSoftInputMode="adjustResize" >
</activity>
<activity
android:name="com.company.myApp.StopDetail_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.myApp.CaptureImage_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.myApp.Survey_Activity"
android:configChanges="orientation|keyboardHidden|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.myApp.GetDirection_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.myApp.Map_FragmentActivity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.myApp.TabBar"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.myApp.ShowStopList_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.myApp.PrepActivity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="landscape" >
</activity>
<activity
android:name="com.company.myApp.TransprentActivity"
android:noHistory="true"
android:screenOrientation="portrait"
android:theme="#android:style/Theme.Translucent.NoTitleBar"
android:windowSoftInputMode="stateHidden|adjustPan" >
</activity>
<receiver
android:name="com.google.android.gcm.GCMBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND" >
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<action android:name="com.google.android.c2dm.intent.REGISTRATION" />
<category android:name="com.company.myApp" />
</intent-filter>
</receiver>
<service android:name="com.myApp.Service.SyncService" >
</service>
<receiver android:name="com.myApp.BrodcastReciver.NetworkStateReceiver" >
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>
</receiver>
<receiver android:name="com.company.myApp.RepeatingAlarmService" />
<receiver android:name="com.company.myApp.RepeatingAlaramCommunication" />
<receiver android:name="com.company.myApp.ReaptingAlramNewStops" />
<service android:name="com.myApp.Service.LogoutService" >
</service>
<service android:name="com.myApp.Service.CallNewStop_Service" >
</service>
<service android:name="com.myApp.Service.CheckingGooglePlayVersionService" >
</service>
<receiver
android:name="com.myApp.BrodcastReciver.DateTimeChangeReceiver"
android:enabled="true"
android:exported="false" >
<intent-filter>
<action android:name="android.intent.action.DATE_CHANGED" />
</intent-filter>
</receiver>
<!-- Start the Service if applicable on boot -->
<receiver android:name="com.myApp.BrodcastReciver.PhoneReStartReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<service
android:name="com.company.myApp.TruckLocationUpdateService"
android:enabled="true" />
<service
android:name="com.company.myApp.TruckCommubicationcountService"
android:enabled="true" />
<service android:name="com.company.myApp.GCMIntentService" />
<service android:name="com.company.myApp.HandleNotification" />
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyB6Ae82d_eLZ1nMYIW7EaaQ3-2-Xn7duHs" />
<!-- android:value="AIzaSyAkZzWl6FSP89yWf7VeX6ooYvd6SuRnV4E" /> -->
</application>
<!--<uses-permission-->
<!--android:name="android.permission.ACCESS_MOCK_LOCATION"-->
<!--android:required="false" />-->
<uses-feature
android:name="android.hardware.camera.autofocus"
android:required="false" />
<uses-permission
android:name="android.permission.FLASHLIGHT"
android:permissionGroup="android.permission-group.HARDWARE_CONTROLS"
android:protectionLevel="normal"
android:required="false" />
</manifest>
anyone has an idea whats wrong with this ? I have tried changing uses-permission to permission, where it had C2D_ it didn't work.

You may refer with this post.
Remove
<uses-permission android:name="${applicationId}.permission.C2D_MESSAGE"/>
<permission
android:name="${applicationId}.permission.C2D_MESSAGE"
android:protectionLevel="signature"/>
Run App then add the permisson again and Run App.
This problem often occurs when you try to install debug and release version of your app on the same device.

Google Play Alpha testing for tablets

Hello and sorry for this question but it is my first app uploaded on Google Play :)
I have uploaded an apk in alpha testing, added a group of testers, and the app can be downloaded on phones, but not on tablets. Any tips will be great.
Many thanks
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="zz.zz.zz"
android:versionCode="25"
android:versionName="1.0.26" >
<uses-sdk
android:minSdkVersion="17"
android:targetSdkVersion="21" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_INTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
<uses-permission android:name="android.permission.GET_TASKS" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-feature android:name="android.hardware.camera.flash" />
<uses-permission
android:name="android.permission.FLASHLIGHT"
android:permissionGroup="android.permission-group.HARDWARE_CONTROLS"
android:protectionLevel="normal" />
<uses-permission android:name="com.android.vending.BILLING" />
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
<supports-screens
android:anyDensity="true"
android:largeScreens="true"
android:normalScreens="true"/>
<application
android:name="zz.zz.zz.TraLaLaApplication"
android:allowBackup="true"
android:icon="#drawable/splash_icon"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:largeHeap="true"
android:screenOrientation="landscape" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="zz.zz.zz.NavigationActivity"
android:configChanges="orientation|keyboardHidden|screenSize"
android:screenOrientation="landscape" />
<activity
android:name="zz.zz.zz.SeeYouSoonActivity"
android:screenOrientation="landscape" />
<activity
android:name="zz.zz.zz.social.FacebookActivity"
android:screenOrientation="portrait" />
<activity android:name="com.facebook.LoginActivity" />
<activity
android:name="zz.zz.zz.facebookShare.ShareMainActivity"
android:screenOrientation="landscape" />
<activity
android:name="zz.zz.zz.settings.fragments.RecordVoiceActivity"
android:screenOrientation="landscape" />
<activity
android:name="zz.zz.zz.settings.fragments.EyeDistanceActivity"
android:screenOrientation="landscape" />
<activity
android:name="zz.zz.zz.settings.fragments.EyeDistance"
android:screenOrientation="landscape" />
<service
android:name="zz.zz.zz.utils.PhotoTakingService"
android:enabled="true" />
<service
android:name="zz.zz.zz.utils.FaceDetectService"
android:enabled="true" />
<meta-data
android:name="com.facebook.sdk.ApplicationId"
android:value="#string/app_id" />
</application>
</manifest>

Android Installation error: INSTALL_PARSE_FAILED_MANIFEST_MALFORMED

I am making an application, when I run that application I am getting following error during running.
[2015-06-19 17:11:06 - Ecommerce] Installation error:
[2015-06-19 17:11:06 - Ecommerce] Please check logcat output for more details.
[2015-06-19 17:11:06 - Ecommerce] Launch canceled!
I don't know where I am doing wrong, I saw so many solutions but that does not match to my problem. Here is my Manifest file
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ecommerce.app"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission
android:name="com.ecommerce.app.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<uses-permission
android:name="com.ecommerce.app.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<receiver
android:name="com.ecommerce.app.utils.GcmBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND" >
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<category android:name="com.ecommerce.app" />
</intent-filter>
</receiver>
<service android:name="com.ecommerce.app.utils.GCMIntentService" />
<activity
android:name="com.ecommerce.app.SplashscreenActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="com.ecommerce.app.MainActivity" />
<activity android:name="com.ecommerce.app.ShoppingCartActivity" />
<activity android:name="com.ecommerce.app.AuthenticateActivity" />
<activity android:name="com.ecommerce.app.BranchLocationActivity" />
<activity android:name="com.ecommerce.app.ProfileActivity" />
<activity android:name="com.ecommerce.app.VoucherActivity" />
<activity android:name="com.ecommerce.app.EShopFragmentActivity" />
<activity android:name="com.ecommerce.app.EShopDetailActivity" />
<activity android:name="com.ecommerce.app.PaypalActivity" />
<activity android:name="com.ecommerce.app.FeedbackActivity" />
<activity android:name="com.ecommerce.app.LoyaltyActivity" />
<activity android:name="com.ecommerce.app.VoucherDisplayActivity" />
<activity
android:name="com.google.android.gms.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" />
<receiver
android:name="com.ecommerce.app.utils.GcmBroadcastReceiver"
android:process=":remote" >
</receiver>
<meta-data android:name="com.google.android.gms.version" />
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="#string/map_key" />
</application>
</manifest>

Try specifying google play services version in meta-data
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
From google maps doc-https://developers.google.com/maps/documentation/android/start
Edit your application's AndroidManifest.xml file, and add the
following declaration within the element. This embeds
the version of Google Play services that the app was compiled with.

Google Play Store - Find out why a device is incompatible

I published an android app in google playstore. Some clients complain about not being able to download the app as the play stores says it is "not compatible".
In google developer console, I can only see THAT a device is not supported. I want to know WHY a device is incompatible but that information is hidden from me.
Google has to have this information to determine compatibility, why is there no way to show this information to developers? Or am I wrong?
We'd really appreciate that feature, it is vital I think.
One device that fails, is for example: medion lifetab e10315
http://www.amazon.de/Medion-LIFETAB-Tablet-PC-Android-schwarz/dp/B00HA4M91W
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="de.example.changed.android2"
android:installLocation="auto"
android:versionCode="1"
android:versionName="xxx" >
<uses-sdk
android:minSdkVersion="9"
android:targetSdkVersion="18" />
<!-- Only this application can receive the messages and registration result -->
<permission
android:name="de.example.changed.android2.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<permission
android:name="de.example.changed.android2.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<!-- Required permission to check licensing. -->
<uses-permission android:name="com.android.vending.CHECK_LICENSE" />
<uses-permission android:name="de.example.changed.android2.permission.MAPS_RECEIVE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.DISABLE_KEYGUARD" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="de.example.changed.android2.permission.C2D_MESSAGE" />
<uses-permission android:name="android.permission.READ_LOGS" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<!--in app paying-->
<uses-permission android:name="com.android.vending.BILLING" />
<supports-screens
android:largeScreens="true"
android:normalScreens="true"
android:smallScreens="true"
android:xlargeScreens="true" >
</supports-screens>
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.FLASHLIGHT" />
<uses-feature
android:name="android.hardware.camera"
android:required="false" />
<uses-feature
android:name="android.hardware.camera.autofocus"
android:required="false" />
<uses-feature
android:name="android.hardware.telephony"
android:required="false" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="false" />
<!-- suppress AndroidDomInspection -->
<instrumentation
android:name="android.test.InstrumentationTestRunner"
android:label="Tests for xxx"
android:targetPackage="de.example.changed.android2" />
<android:uses-permission android:name="android.permission.READ_PHONE_STATE" />
<application
android:name=".xxxApp"
android:allowBackup="false"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/Theme.xxx" >
<uses-library android:name="com.google.android.maps" />
<uses-library android:name="android.test.runner" />
<receiver
android:name=".services.C2DMReceiver"
android:permission="com.google.android.c2dm.permission.SEND" >
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<category android:name="de.example.changed.android" />
</intent-filter>
<intent-filter>
<action android:name="com.google.android.c2dm.intent.REGISTRATION" />
<category android:name="de.example.changed.android" />
</intent-filter>
</receiver>
<receiver android:name=".services.NetworkChangeReceiver" >
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>
</receiver>
<receiver android:name=".services.SMSReceiver" >
<intent-filter android:priority="9999" >
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
<activity
android:name=".ui.RegistrationActivity"
android:label="#string/app_name" >
</activity>
<activity
android:name=".ui.MapActivity"
android:configChanges="orientation|screenSize|keyboardHidden" />
<activity
android:name=".ui.SettingsActivity"
android:configChanges="orientation|screenSize" />
<activity
android:name=".ui.GroupsEdit"
android:parentActivityName=".ui.GroupsList" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="de.example.changed.android2.ui.GroupsList" />
</activity>
<activity
android:name=".ui.GroupsList"
android:parentActivityName=".ui.AlertListActivity" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="de.example.changed.android2.ui.AlertListActivity" />
</activity>
<activity
android:name=".ui.AlertListActivity"
android:exported="true" />
<activity android:name=".ui.HelpActivity" />
<activity
android:name=".ui.AlertDetailActivity"
android:configChanges="orientation|screenSize|keyboardHidden"
android:parentActivityName=".ui.AlertListActivity" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="de.example.changed.android2.ui.AlertListActivity" />
</activity>
<activity
android:name=".ui.AlertPopupActivity"
android:configChanges="orientation|screenSize|keyboardHidden"
android:noHistory="true" >
</activity>
<activity
android:name=".services.helper.test.EncryptionTest"
android:label="#string/title_activity_encryption_test" >
</activity>
<activity
android:name=".services.helper.test.EncryptionClientTest"
android:label="#string/title_activity_encryption_client_test" >
</activity>
<activity
android:name=".ui.BlockedAlertListActivity"
android:label="#string/title_activity_blocked_alert_list" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="de.example.changed.android2.ui.AlertListActivity" />
</activity>
<activity
android:name=".ui.StartActivity"
android:label="#string/app_name"
android:noHistory="true" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".ui.FeedbackCustomTextActivity"
android:windowSoftInputMode="stateUnchanged" />
<!-- Widgets -->
<receiver
android:name=".ui.Widget"
android:label="#string/widget_title" >
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<intent-filter>
<action android:name="de.example.changed.android2.ui.Widget.WIDGET_CLICK" />
</intent-filter>
<intent-filter>
<action android:name="de.example.changed.android2.ui.Widget.WIDGET_UPDATE_UI" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="#xml/widget_provider" />
</receiver>
<!-- Services -->
<!-- Provider -->
<provider
android:name=".provider.FilterProvider"
android:authorities="de.example.changed" >
</provider>
<activity android:name=".ui.FeedbackOverviewActivity" >
</activity>
<activity
android:name=".ui.ProfileListActivity"
android:label="#string/title_activity_profile_list"
android:parentActivityName=".ui.GroupsList" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="de.example.changed.android2.ui.GroupsList" />
</activity>
<activity
android:name=".ui.ProfileEditActivity"
android:label="#string/title_activity_profile_edit" >
</activity>
<activity
android:name=".billing.BillingActivity"
android:label="#string/title_activity_billing" >
</activity>
</application>
</manifest>

remove android:targetSdkVersion="18"