Android : java.lang.RuntimeException: Unable to instantiate activity -


i have verry strange behavior today app.

my app works fine when launch eclipse.

but when install app on device google play, following error :

java.lang.runtimeexception: unable instantiate activity componentinfo{com.rss.cupofnews/com.rss.main.mainactivity}: java.lang.classnotfoundexception: com.rss.main.mainactivity

i don't understand why error when install app google play , why don't error when install app directly on device eclipse.

maybe problem packages ?

here piece of code of androidmanifest.xml :

<manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.rss.cupofnews"     android:versioncode="7"     android:versionname="1.6">      <uses-sdk android:minsdkversion="14" android:targetsdkversion="18" />      <uses-permission android:name="android.permission.internet" />       <application         android:label="@string/app_name"         android:icon="@drawable/ic_launcher"         android:theme="@android:style/theme.holo.light"         android:allowbackup="true">          <activity android:name="com.rss.utils.webbrowserviewactivity"></activity>         <activity android:name="com.rss.utils.licencesview"></activity>         <activity android:name="com.rss.preferences.bibliothequeactivity"></activity>          <activity             android:name="com.rss.main.mainactivity"             android:label="@string/app_name" >             <intent-filter>                 <action android:name="android.intent.action.main" />                 <category android:name="android.intent.category.launcher" />             </intent-filter>         </activity>

and here screenshot of explorer file in eclipse :

enter image description here

what problem ?

please me.

thanks

check proguard settings, might renaming main class when build submitting play store.

try adding -keep public class com.rss.main.mainactivity


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