Question

I’ve done this before, with luck, so I can’t understand why I’m messing it up now.

Quite simply, start a second activity from the main activity.

In my main Activity (Test.class):

Intent s = new Intent(Test.this, Settings.class);
this.startActivity(s);

My Settings Activity (Settings.class):

public class Settings extends Activity {
    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.settings);
    }
}

settings.xml:

<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout 
    android:layout_height="wrap_content" 
    android:layout_width="fill_parent" 
    android:orientation="horizontal" 
    xmlns:android="http://schemas.android.com/apk/res/android"> 

    <TextView 
        android:id="@+id/test"
        android:text="Test"
    /> 

</LinearLayout>

And here’s the application part of the AndroidManifest.xml file:

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name" >
    <activity
        android:name="com.frank.test.Test"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <activity
        android:name="com.frank.test.Settings"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>


</application>

This just crashes. No log entries, no nothing. Not even when I surround the creating and starting of the intent/activity with a try-catch with a debug tag.

I’m blind, or deaf, I know. But I really HATE these crashes where there are no errors anywhere.

I’m starting the intent inside the main Acitvity’s onCreate() method, by the way.

Update: I also tried adding the second activity to the AndroidManifest.xml class like this:

<activity android:name=".Settings"></activity>

Answer 1

Few things you need to fix.

First, your layout:

You need to define width and height to your TextView as below:

<TextView 
    android:id="@+id/test"
    android:text="Test"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" /> 

Second, you need to fix your AndroidManifest.xml. You are not properly defining both of your activities. See below:

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name" >

<!-- Test activity -->
    <activity
        android:name="com.frank.test.Test"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

<!-- Settings activity -->
    <activity
        android:name="com.frank.test.Settings"
        android:label="@string/app_name" >
    </activity>
</application>