Question

I’ve this issue when I run my code (caused by an intent):

08-28 05:30:11.785: E/AndroidRuntime(27529): FATAL EXCEPTION: main
08-28 05:30:11.785: E/AndroidRuntime(27529):
java.lang.RuntimeException: Unable to instantiate activity
ComponentInfo{com.tnf.timetolunch/com.tnf.timetolunch.RestaurantListActivity}:
java.lang.NullPointerException 08-28 05:30:11.785:
E/AndroidRuntime(27529): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1618)
08-28 05:30:11.785: E/AndroidRuntime(27529): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1716)
08-28 05:30:11.785: E/AndroidRuntime(27529): at
android.app.ActivityThread.access$1500(ActivityThread.java:124) 08-28
05:30:11.785: E/AndroidRuntime(27529): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:968)
08-28 05:30:11.785: E/AndroidRuntime(27529): at
android.os.Handler.dispatchMessage(Handler.java:99) 08-28
05:30:11.785: E/AndroidRuntime(27529): at
android.os.Looper.loop(Looper.java:130) 08-28 05:30:11.785:
E/AndroidRuntime(27529): at
android.app.ActivityThread.main(ActivityThread.java:3806) 08-28
05:30:11.785: E/AndroidRuntime(27529): at
java.lang.reflect.Method.invokeNative(Native Method) 08-28
05:30:11.785: E/AndroidRuntime(27529): at
java.lang.reflect.Method.invoke(Method.java:507) 08-28 05:30:11.785:
E/AndroidRuntime(27529): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
08-28 05:30:11.785: E/AndroidRuntime(27529): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 08-28
05:30:11.785: E/AndroidRuntime(27529): at
dalvik.system.NativeStart.main(Native Method) 08-28 05:30:11.785:
E/AndroidRuntime(27529): Caused by: java.lang.NullPointerException
08-28 05:30:11.785: E/AndroidRuntime(27529): at
android.content.ContextWrapper.getPackageName(ContextWrapper.java:127)
08-28 05:30:11.785: E/AndroidRuntime(27529): at
android.app.Activity.getLocalClassName(Activity.java:3558) 08-28
05:30:11.785: E/AndroidRuntime(27529): at
android.app.Activity.getPreferences(Activity.java:3592) 08-28
05:30:11.785: E/AndroidRuntime(27529): at
com.tnf.timetolunch.RestaurantListActivity.(RestaurantListActivity.java:18)
08-28 05:30:11.785: E/AndroidRuntime(27529): at
java.lang.Class.newInstanceImpl(Native Method) 08-28 05:30:11.785:
E/AndroidRuntime(27529): at
java.lang.Class.newInstance(Class.java:1409) 08-28 05:30:11.785:
E/AndroidRuntime(27529): at
android.app.Instrumentation.newActivity(Instrumentation.java:1021)
08-28 05:30:11.785: E/AndroidRuntime(27529): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1610)
08-28 05:30:11.785: E/AndroidRuntime(27529): … 11 more

I tried to lookup to similar errors to see how others fixed their issues, my Manifest seems OK (or at least my activity is registered):

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.tnf.timetolunch"
    android:versionCode="1"
    android:versionName="@string/app_name" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />
    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:name="App"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".RestaurantListActivity"
            android:label="@string/title_activity_restaurants" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>

And the code from my MainActivity:

Intent i = new Intent(this, RestaurantListActivity.class);
startActivity(i);

First time I post here, hope I’ll be lucky.
Thanks

Answer 1

The Problem is that you have 2 activitys with the main intent there should be only one MainActivity, And I advise you to use only one Launcher Activity