Question

I’m creating my first android application but it does not start at all.

In my src > android.SampleApp I created a java file named Main.java with:

public class Main extends Activity {

// Will be connected with the buttons via XML
public void myClickHandler(View view) {
    switch (view.getId()) {
    case R.id.btn1:
        ((EditText) findViewById(R.id.txtContent)).setText("Button 1 Clicked");
        break;
    case R.id.btn2:
        ((EditText) findViewById(R.id.txtContent)).setText("Button 2 Clicked");
        break;

    }
}
}

In my res > layout > main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView  
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:text="@string/hello" android:id="@+id/txtContent"/>
<Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Button One" android:id="@+id/btn1"></Button>
<Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Button Two" android:id="@+id/btn2"></Button>

My AndroidManifest.xml content:

<?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="android.SampleApp"
  android:versionCode="1"
  android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">


</application>
<uses-sdk android:minSdkVersion="7" />

I get this error:

1. [2010-02-02 01:46:26 – SampleApp]Android Launch!
2. [2010-02-02 01:46:26 – SampleApp]adb is running normally.
3. [2010-02-02 01:46:26 – SampleApp]No Launcher activity found!
4. [2010-02-02 01:46:26 – SampleApp]The launch will only sync the application package on the device!
5. [2010-02-02 01:46:26 – SampleApp]Performing sync

Lines 3 and 4 is highlighted red.

Could someone lead my in the right direction to just get the application to show on the emulator?

Android 2.1 SDK with Eclipse

Answer 1

You are missing the following in your <activity> tag in your manifest file:

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

For more info see here