Android - java.lang.SecurityException: Permission Denial: starting Intent

Question

I have a library (jar) on build path of my project. The project accesses the MainActivity in the jar, using the following intent:

final Intent it = new Intent();
it.setClassName("com.example.lib", "com.example.lib.MainActivity");
startActivity(it);

It used to work for sometime, but suddenly started getting 'ActivityNotFoundException: No Activity found to handle Intent' which I was able to resolve. But now I am stuck with a 'java.lang.SecurityException: Permission Denial: starting Intent'.

I have tried all suggestions made on stackoverflow (check for duplicates in manifest file; add android:exported="true" to lib manifest; Eclipse> Project> Clean; adding/ modifying 'intent-filter' tags; etc.). I even tried re-writing the manifest of the project but not going anywhere with it.

Here's the logcat output:

11-07 06:20:52.176: E/AndroidRuntime(4626): FATAL EXCEPTION: main
11-07 06:20:52.176: E/AndroidRuntime(4626): java.lang.SecurityException: Permission     Denial: starting Intent { cmp=com.example.lib/.MainActivity } from ProcessRecord{40dd3778     4626:com.example.project/u0a10046} (pid=4626, uid=10046) not exported from uid 10047
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.os.Parcel.readException(Parcel.java:1425)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.os.Parcel.readException(Parcel.java:1379)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.app.ActivityManagerProxy.startActivity(ActivityManagerNative.java:1885)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1412)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.app.Activity.startActivityForResult(Activity.java:3370)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.app.Activity.startActivityForResult(Activity.java:3331)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:824)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.app.Activity.startActivity(Activity.java:3566)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.app.Activity.startActivity(Activity.java:3534)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at com.example.project.MainActivity.onOptionsItemSelected(MainActivity.java:93)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.app.Activity.onMenuItemSelected(Activity.java:2548)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.support.v4.app.FragmentActivity.onMenuItemSelected(FragmentActivity.java:366)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:980)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:149)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at com.android.internal.view.menu.ActionMenuView.invokeItem(ActionMenuView.java:547)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at com.android.internal.view.menu.ActionMenuItemView.onClick(ActionMenuItemView.java:115)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.view.View.performClick(View.java:4204)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.view.View$PerformClick.run(View.java:17355)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.os.Handler.handleCallback(Handler.java:725)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.os.Handler.dispatchMessage(Handler.java:92)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.os.Looper.loop(Looper.java:137)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at android.app.ActivityThread.main(ActivityThread.java:5041)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at java.lang.reflect.Method.invokeNative(Native Method)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at java.lang.reflect.Method.invoke(Method.java:511)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
11-07 06:20:52.176: E/AndroidRuntime(4626):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
11-07 06:20:52.176: E/AndroidRuntime(4626):     at dalvik.system.NativeStart.main(Native Method)

Manifest XML of Project:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.project"
android:versionCode="4"
android:versionName="4.0" >

<!-- Permissions -->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<supports-screens android:anyDensity="true" />

<!-- SDK Settings -->
<uses-sdk
    android:minSdkVersion="11"
    android:targetSdkVersion="18" />

<!-- APP Start -->
<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >

<!-- App Activity -->
    <activity
        android:name="com.example.project.MainActivity"
        android:label="@string/app_name"
        android:screenOrientation="portrait" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

<!-- Library Activity -->
    <activity android:name="com.example.lib.MainActivity" android:label="LibMain">
         <intent-filter>
        <action android:name="android.intent.action.MAIN"></action>
     </intent-filter>
    </activity>

</application>
<!-- END - APP -->

</manifest>

What am I overlooking? Any suggestions?

EDIT

I updated the manifest.xml with all other activities & somehow, that resolved the problem. The intent activity starts up without any errors. BUT, this is only on AVD. On actual device, it is still throwing same error. I have uninstalled the app from device completely and reinstalled, yet the same error.

Answer 1

This is only for android studio

So I ran into this problem recently. The issue was in the build/run configuration. Apparently android studio had chosen an activity in my project as the launch activity thus disregarding my choice in the manifest file.

Click on the module name just to the left of the run button and click on "Edit configurations..." Now make sure "Launch default Activity" is selected.

The funny thing when I got this error was that I could still launch the app with from the device and it starts with the preferred Activity. But launching from the IDE seemed impossible.

Answer 2

You need to set android:exported="true" in your AndroidManifest.xml file where you declare this Activity:

<activity
    android:name="com.example.lib.MainActivity"
    android:label="LibMain" 
    android:exported="true">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" >
        </action>
    </intent-filter>
</activity>

Answer 3

Select your proper configuration for launching Application.

In my case i found mistake as below image:

I had just changed like:

May it will help to someone, Thanks :)