App isn't installed android error

Question

I have installed android SDK 5.1 recently after that i am getting new errors which haven't seen before like App isn't installed error.Got this error if user clicks on app icon in device .Could you suggest how to fix this Here is my manifest code

 <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.srikanth"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="11"
        android:targetSdkVersion="21" />

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.FLASHLIGHT" />
    <!-- Internet permission -->

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT" />

    <application
        android:name="com.srikanth.utils.AppController"
        android:icon="@drawable/icon"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.Light.NoTitleBar.Fullscreen" >
        <activity
            android:name="com.srikanth.SplashActivity"
            android:label="@string/app_name"
              android:exported="true"
            android:screenOrientation="portrait" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.facebook.FacebookActivity"
            android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation"
            android:label="@string/app_name" />

        <meta-data
            android:name="com.facebook.sdk.ApplicationId"
            android:value="@string/APP_ID" />

        <provider
            android:name="com.facebook.FacebookContentProvider"
            android:authorities="com.facebook.app.FacebookContentProvider1234"
            android:exported="true" />

        <activity android:name="com.srikanth.MainActivity" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity android:name="com.srikanth.EditProfile" >
        </activity>
        <activity android:name="com.srikanth.UnlockActivity" >
        </activity>
        <activity android:name="com.srikanth.FacebookFriends" >
        </activity>
        <activity android:name="com.srikanth.HomeActivity" >
        </activity>
        <activity android:name="com.srikanth.SplashActivity" >
        </activity>
    </application>

and here is error report in console

  [2015-04-20 13:01:08 - InstaScene] Starting activity com.instascene.SplashActivity on device EBAZFG148859
    [2015-04-20 13:01:09 - InstaScene] ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.instascene/.SplashActivity }
    [2015-04-20 13:01:09 - InstaScene] ActivityManager: java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.instascene/.SplashActivity } from null (pid=8344, uid=2000) not exported from uid 10131
    [2015-04-20 13:01:09 - InstaScene] ActivityManager: at android.os.Parcel.readException(Parcel.java:1472)
    [2015-04-20 13:01:09 - InstaScene] ActivityManager: at android.os.Parcel.readException(Parcel.java:1426)
    [2015-04-20 13:01:09 - InstaScene] ActivityManager: at android.app.ActivityManagerProxy.startActivityAsUser(ActivityManagerNative.java:2712)
    [2015-04-20 13:01:09 - InstaScene] ActivityManager: at com.android.commands.am.Am.runStart(Am.java:680)
    [2015-04-20 13:01:09 - InstaScene] ActivityManager: at com.android.commands.am.Am.onRun(Am.java:270)
    [2015-04-20 13:01:09 - InstaScene] ActivityManager: at com.android.internal.os.BaseCommand.run(BaseCommand.java:47)
    [2015-04-20 13:01:09 - InstaScene] ActivityManager: at com.android.commands.am.Am.main(Am.java:76)
    [2015-04-20 13:01:09 - InstaScene] ActivityManager: at com.android.internal.os.RuntimeInit.nativeFinishInit(Native Method)
    [2015-04-20 13:01:09 - InstaScene] ActivityManager: at com.android.internal.os.RuntimeInit.main(RuntimeInit.java:243)
    [2015-04-20 13:01:09 - InstaScene] ActivityManager: at dalvik.system.NativeStart.main(Native Method)

I have checked this problem over stackoverflow and tried solutions but no luck here is reference links i have tried link1 link2

Answer 1

Check to see if android:exported is set to false as per the security instruction given here. If yes then you need to set it to true to test apps on your phone using USB debugging as shown here:

<activity 
    android:name=".MainActivity"
    android:exported="true">
  <intent-filter>
    <action android:name="android.intent.action.MAIN" />
    <category android:name="android.intent.category.LAUNCHER" />
  </intent-filter>
</activity>

Answer 2

You'r registering your SplashActivity twice.

<activity android:name="com.srikanth.SplashActivity" >
    </activity>

 <activity
        android:name="com.srikanth.SplashActivity"
        android:label="@string/app_name"
          android:exported="true"
        android:screenOrientation="portrait" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

So just need to remove one of them and add android:exported="true"