Peter Rader Peter Rader - 6 months ago 9
Java Question

View not added to application

I am confused. This is my Action:

public class ZoppenActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final HostnameChecker c = new HostnameChecker();
c.execute(this);
}
}


And this is my zoppen_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<View xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000">
</View>


The preview (GraphicalLayout-Tab) has a black background, but if i debug the Application, there is no black background. It looks like the view is never added to the application.

What did i wrong?

Answer

You need use setContentView in Activity to load the View.So add it into onCreate.

public class ZoppenActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.zoppen_main);
        final HostnameChecker c = new HostnameChecker();
        c.execute(this);
    }
}
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