TabItem Menubar

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/LinearLayout01"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    xmlns:android="http://schemas.android.com/apk/res/android">
   
    <ScrollView android:id="@+id/ScrollView01"
        android:scrollbars="horizontal|vertical"
        android:alwaysDrawnWithCache="false"
        android:layout_height="match_parent"
        android:layout_width="match_parent">
       
        <HorizontalScrollView android:id="@+id/HorizontalScrollView01"
            android:layout_height="fill_parent" android:layout_width="wrap_content">
           
            <LinearLayout android:id="@+id/LinearLayout02"
                android:layout_width="wrap_content"
                android:orientation="horizontal"
                android:layout_height="fill_parent">
               
                <ImageButton android:src="@drawable/1"
                    android:id="@+id/b_1"
                    android:layout_width="wrap_content"
                    android:layout_marginLeft="2dip"
                    android:layout_marginRight="2dip"
                    android:layout_height="fill_parent"
                    android:padding="5dip"
                    android:background="@drawable/1"
                    android:clickable="true">
                </ImageButton>
                <ImageButton
                    android:src="@drawable/2"
                    android:id="@+id/b_2"
                    android:layout_height="fill_parent"
                    android:layout_width="fill_parent"
                    android:layout_marginLeft="2dip"
                    android:layout_marginRight="2dip"
                    android:padding="5dip"
                    android:background="@drawable/2">
                </ImageButton>
                <!-- Weitere ImageButtons -->
            </LinearLayout>
        </HorizontalScrollView>
    </ScrollView>
</LinearLayout>

package firstApp.Activity;

import android.app.Activity;
 
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageButton;
import android.widget.Toast;

public class StartActivity extends Activity {
    private ImageButton b_1;
    private ImageButton b_2;
    private ImageButton b_3;
    private ImageButton b_4;
    private ImageButton b_5;
   
            View.OnClickListener actionListener = new View.OnClickListener() {   
         
                public void onClick(View v) {
                    if (v == b_1) {
                        startActivity(new Intent(StartActivity.this, Activity1.class));
                    }
                    else if (v == b_2) {
                        startActivity(new Intent(StartActivity.this, Activity2.class));
                    }
                    else if (v == b_3) {
                        startActivity(new Intent(StartActivity.this, Activity3.class));
                    }
                    else if (v == b_4) {
                        startActivity(new Intent(StartActivity.this, Activity4.class));
                    }
                    else {
                        Toast.makeText(getBaseContext(), "Keine Action vorhanden",
                                Toast.LENGTH_SHORT).show();
                    }
                }
            };
       
            @Override
            public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.main);
   
                b_1 = (ImageButton) findViewById(R.id.b_1);
                b_1.setOnClickListener(actionListener);
               
                b_2 = (ImageButton) findViewById(R.id.b_2);
                b_2.setOnClickListener(actionListener);
               
                b_3 = (ImageButton) findViewById(R.id.b_2);
                b_3.setOnClickListener(actionListener);
               
                b_4 = (ImageButton) findViewById(R.id.b_2);
                b_4.setOnClickListener(actionListener);
               
            }
}