Question

As the title says I keep getting this error and don’t know what I’m missing. I’ve cleaned the project several times. Here is my code:

 startActivity(new Intent(this, UsrPrefs.class));

In the manifest:

<application

    android:label="@string/app_name" >
    <activity
        android:name=".IcyArmActivity"
        android:label="@string/app_name" 
        android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

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

    <activity 
        android:label="@string/app_name"
        android:name=".UserPreferences"
        android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen">
        <intent-filter>
            <action android:name="android.intent.action.PREFS" />

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

</application>

OHHHHHHHHHHHHHHHHHHHH!!!!! Thanks you guys. I thought the UsrPrefs.class was the name of the class so that is what I was using. I see the connection now. DOH!!!!

Answer 1

It’s because you defined a class as an activity with one name and starting the other activity which is not registered with that name in the manifest.xml

Replace this:

<activity 
        android:label="@string/app_name"
        android:name=".UserPreferences"
        android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen">
        <intent-filter>
            <action android:name="android.intent.action.PREFS" />

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

with

<activity 
        android:label="@string/app_name"
        android:name=".UsrPrefs"
        android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen">
        <intent-filter>
            <action android:name="android.intent.action.PREFS" />

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