TabHost使用（一）

第一步：创建布局文件

<?xml version="1.0" encoding="utf-8"?><TabHost xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@android:id/tabhost"    android:layout_width="fill_parent"    android:layout_height="fill_parent">    <LinearLayout        android:orientation="vertical"        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:padding="5dp">        <TabWidget            android:id="@android:id/tabs"            android:layout_width="fill_parent"            android:layout_height="wrap_content" />        <FrameLayout            android:id="@android:id/tabcontent"            android:layout_width="fill_parent"            android:layout_height="fill_parent"            android:padding="5dp" />    </LinearLayout></TabHost>

第二步：创建三个Activity作为Tabhost内容

public class Activity1 extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  TextView textview = new TextView(this);
        textview.setText("This is one tab");
        setContentView(textview);

}

}

第三步：测试类

public class Activity1 extends Activity { @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  TextView textview = new TextView(this);        textview.setText("This is one tab");        setContentView(textview); }}

 

public class TabHostTestActivity extends TabActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        TabHost tabHost=getTabHost();
        tabHost.addTab(tabHost.newTabSpec("tab1").setIndicator("tab1").setContent(new Intent(TabHostTestActivity.this
          ,Activity1.class)));
        tabHost.addTab(tabHost.newTabSpec("tab2").setIndicator("tab2").setContent(new Intent(TabHostTestActivity.this
          ,Activity2.class)));
        tabHost.addTab(tabHost.newTabSpec("tab3").setIndicator("tab3").setContent(new Intent(TabHostTestActivity.this
          ,Activity3.class)));
        tabHost.setCurrentTab(1);
    }
}、

第四步：演示效果