Android TabWidget/TabHost的使用

Android TabWidget/TabHost有两种使用方法：

第一种：使用系统自带写好的TabHost（及继承自TabActivity类）具体代码如下:

<?xml version="1.0" encoding="utf-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"><LinearLayout android:id="@+id/tab1"android:layout_width="fill_parent" android:layout_height="fill_parent"androidrientation="vertical"><TextView android:id="@+id/TextView1"android:text="This is a tab1" android:layout_width="fill_parent"android:layout_height="wrap_content"></TextView></LinearLayout><LinearLayout android:id="@+id/tab2"android:layout_width="fill_parent" android:layout_height="fill_parent"androidrientation="vertical"><TextView android:id="@+id/TextView2"android:text="This is a tab2" android:layout_width="fill_parent"android:layout_height="wrap_content"></TextView></LinearLayout><LinearLayout android:id="@+id/tab3"android:layout_width="fill_parent" android:layout_height="fill_parent"androidrientation="vertical"><TextView android:id="@+id/TextView3"android:text="This is a tab3" android:layout_width="fill_parent"android:layout_height="wrap_content"></TextView></LinearLayout></FrameLayout>

package com.Aina.Android;import android.app.AlertDialog;import android.app.Dialog;import android.app.TabActivity;import android.content.DialogInterface;import android.os.Bundle;import android.view.LayoutInflater;import android.widget.TabHost;public class Test_TabWidget extends TabActivity {/** Called when the activity is first created. */private TabHost tabHost;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);// setContentView(R.layout.main);tabHost = this.getTabHost();LayoutInflater li = LayoutInflater.from(this);li.inflate(R.layout.main, tabHost.getTabContentView(), true);tabHost.addTab(tabHost.newTabSpec("Tab_1").setContent(R.id.tab1).setIndicator("TAB1",this.getResources().getDrawable(R.drawable.img1)));tabHost.addTab(tabHost.newTabSpec("Tab_2").setContent(R.id.tab2).setIndicator("TAB2",this.getResources().getDrawable(R.drawable.img2)));tabHost.addTab(tabHost.newTabSpec("Tab_3").setContent(R.id.tab3).setIndicator("TAB3",this.getResources().getDrawable(R.drawable.img3)));tabHost.setCurrentTab(1);//tabHost.setBackgroundColor(Color.GRAY);tabHost.setOnTabChangedListener(new TabHost.OnTabChangeListener() {public void onTabChanged(String tabId) {Dialog dialog = new AlertDialog.Builder(Test_TabWidget.this).setTitle("提示").setMessage("选中了" + tabId + "选项卡").setIcon(R.drawable.icon).setPositiveButton("确定", new DialogInterface.OnClickListener(){public void onClick(DialogInterface dialog,int which) {// TODO Auto-generated method stub}}).create();dialog.show();}});}}

第二种：就是定义我们自己的tabHost：不用继承TabActivity，具体代码如下:

<?xml version="1.0" encoding="utf-8"?><TabHost xmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/TabHost01" android:layout_width="fill_parent"android:layout_height="fill_parent"><LinearLayout android:layout_width="fill_parent"android:orientation="vertical" android:layout_height="fill_parent"><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"><LinearLayout android:id="@+id/LinearLayout1"android:layout_width="fill_parent"android:layout_height="wrap_content"><TextView android:text="one"android:id="@+id/TextView01" android:layout_width="wrap_content"android:layout_height="wrap_content"></TextView></LinearLayout><LinearLayout android:id="@+id/LinearLayout2"android:layout_width="wrap_content"android:layout_height="wrap_content"><TextView android:text="two"android:id="@+id/TextView02" android:layout_width="fill_parent"android:layout_height="wrap_content"></TextView></LinearLayout><LinearLayout android:id="@+id/LinearLayout3"android:layout_width="wrap_content"android:layout_height="wrap_content"><TextView android:text="three"android:id="@+id/TextView03" android:layout_width="fill_parent"android:layout_height="wrap_content"></TextView></LinearLayout></FrameLayout></LinearLayout></TabHost>

package com.Aina.Android;import android.app.Activity;import android.os.Bundle;import android.util.Log;import android.view.LayoutInflater;import android.widget.TabHost;public class Test_TabHost extends Activity {/** Called when the activity is first created. */private TabHost tabHost;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);try{tabHost = (TabHost) this.findViewById(R.id.TabHost01);tabHost.setup();tabHost.addTab(tabHost.newTabSpec("tab_1").setContent(R.id.LinearLayout1).setIndicator("TAB1",this.getResources().getDrawable(R.drawable.img1)));tabHost.addTab(tabHost.newTabSpec("tab_2").setContent(R.id.LinearLayout2).setIndicator("TAB2",this.getResources().getDrawable(R.drawable.img2)));tabHost.addTab(tabHost.newTabSpec("tab_3").setContent(R.id.LinearLayout3).setIndicator("TAB3",this.getResources().getDrawable(R.drawable.img3)));tabHost.setCurrentTab(1);}catch(Exception ex){ex.printStackTrace();Log.d("EXCEPTION", ex.getMessage());}}}

注意：第二种方法时布局文件中的TabWidget的id必须定义为：android:id="@android:id/tabs"，FrameLayout的id必须定义为：android:id="@android:id/tabcontent" 其它控件没有限制，否则报错。

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