1.布局
1 <TabHost xmlns:android="http://schemas.android.com/apk/res/android" 2 xmlns:tools="http://schemas.android.com/tools" 3 android:id="@+id/tabHost" 4 android:layout_width="match_parent" 5 android:layout_height="match_parent" > 6 7 <LinearLayout 8 android:id="@+id/tab1" 9 android:layout_width="match_parent" 10 android:layout_height="match_parent" 11 android:orientation="vertical" 12 tools:context=".AndroidTabHostActivity" > 13 14 <TextView 15 android:layout_width="wrap_content" 16 android:layout_height="wrap_content" 17 android:layout_centerHorizontal="true" 18 android:layout_centerVertical="true" 19 android:text="第一个" /> 20 </LinearLayout> 21 22 <LinearLayout 23 android:id="@+id/tab2" 24 android:layout_width="match_parent" 25 android:layout_height="match_parent" 26 android:orientation="vertical" 27 tools:context=".AndroidTabHostActivity" > 28 29 <TextView 30 android:layout_width="wrap_content" 31 android:layout_height="wrap_content" 32 android:layout_centerHorizontal="true" 33 android:layout_centerVertical="true" 34 android:text="第二个" /> 35 </LinearLayout> 36 37 <LinearLayout 38 android:id="@+id/tab3" 39 android:layout_width="match_parent" 40 android:layout_height="match_parent" 41 android:orientation="vertical" 42 tools:context=".AndroidTabHostActivity" > 43 44 <TextView 45 android:layout_width="wrap_content" 46 android:layout_height="wrap_content" 47 android:layout_centerHorizontal="true" 48 android:layout_centerVertical="true" 49 android:text="第三个" /> 50 </LinearLayout> 51 52 </TabHost>
2.逻辑控制
1 package com.example.androidtabhost; 2 3 import android.os.Bundle; 4 import android.app.Activity; 5 import android.app.TabActivity; 6 import android.view.LayoutInflater; 7 import android.view.Menu; 8 import android.widget.TabHost; 9 10 public class AndroidTabHostActivity extends TabActivity { 11 //注意：extends TabActivity 12 @Override 13 protected void onCreate(Bundle savedInstanceState) { 14 super.onCreate(savedInstanceState); 15 //setContentView(R.layout.activity_android_tab_host); 16 TabHost tabHost=getTabHost();//(TabHost)this.findViewById(R.id.tabHost); 17 //设置TabHost布局 18 LayoutInflater.from(this).inflate(R.layout.activity_android_tab_host,tabHost.getTabContentView(),true); 19 //添加第一个标签页 20 tabHost.addTab(tabHost.newTabSpec("tab01").setIndicator("已接电话").setContent(R.id.tab1)); 21 //添加第2个标签页 22 tabHost.addTab(tabHost.newTabSpec("tab02").setIndicator("呼出电话",getResources().getDrawable(R.drawable.sj)).setContent(R.id.tab2)); 23 //添加第3个标签页 24 tabHost.addTab(tabHost.newTabSpec("tab03").setIndicator("未接电话").setContent(R.id.tab3)); 25 26 } 27 28 @Override 29 public boolean onCreateOptionsMenu(Menu menu) { 30 // Inflate the menu; this adds items to the action bar if it is present. 31 getMenuInflater().inflate(R.menu.activity_android_tab_host, menu); 32 return true; 33 } 34 35 }
TabHost是整个Tab的容器，包括两部分，TabWidget和FrameLayout。TabWidget就是每个tab的标签，FrameLayout则是tab内容
TabHost的二种实现方式：
第一种：继承TabActivity
1、如果我们使用extendsTabAcitivty，如同ListActivity，TabHost必须设置为@android:id/tabhost
2、TabWidget必须设置android:id为@android:id/tabs
3、FrameLayout需要设置android:id为@android:id/tabcontent
第二种：只是单纯的继承Activity类
布局文件 和上面一样 只是TabHost 的id 换为
tabHost = (TabHost)findViewById(R.id.m_tabhost);
//如果通过findViewById得到TabHost一定要调用 TabHost.setup();
LocalActivityManagerlocalAcManager = new LocalActivityManager(MainActivity.this,true);
localAcManager.dispatchCreate(savedInstanceState);
tabHost.setup(localAcManager);
还可以自定义标签，将TabWidget android:visibility="gone" 然后自己弄些控件替代
另一实现自定义底部菜单
布局文件
1 <?xml version="1.0" encoding="UTF-8"?> 2 <TabHost android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent" 3 xmlns:android="http://schemas.android.com/apk/res/android"> 4 <LinearLayout 5 android:orientation="vertical" 6 android:layout_width="fill_parent" 7 android:layout_height="fill_parent"> 8 <FrameLayout 9 android:id="@android:id/tabcontent" 10 android:layout_width="fill_parent" 11 android:layout_height="0.0dip" 12 android:layout_weight="1.0" /> 13 <TabWidget 14 android:id="@android:id/tabs" 15 android:visibility="gone" 16 android:layout_width="fill_parent" 17 android:layout_height="wrap_content" 18 android:layout_weight="0.0" /> 19 <RadioGroup 20 android:gravity="center_vertical" 21 android:layout_gravity="bottom" 22 android:orientation="horizontal" 23 android:id="@+id/main_radio" 24 android:background="@drawable/maintab_toolbar_bg" 25 android:layout_width="fill_parent" 26 android:layout_height="wrap_content"> 27 <RadioButton 28 android:id="@+id/radio_button0" 29 android:tag="radio_button0" 30 android:layout_marginTop="2.0dip" 31 android:text="@string/alarm" 32 android:drawableTop="@drawable/icon_1" 33 style="@style/main_tab_bottom" /> 34 <RadioButton 35 android:id="@+id/radio_button1" 36 android:tag="radio_button1" 37 android:layout_marginTop="2.0dip" 38 android:text="@string/message" 39 android:drawableTop="@drawable/icon_2" 40 style="@style/main_tab_bottom" /> 41 <RadioButton 42 android:id="@+id/radio_button2" 43 android:tag="radio_button2" 44 android:layout_marginTop="2.0dip" 45 android:text="@string/photo" 46 android:drawableTop="@drawable/icon_3" 47 style="@style/main_tab_bottom" /> 48 <RadioButton 49 android:id="@+id/radio_button3" 50 android:tag="radio_button3" 51 android:layout_marginTop="2.0dip" 52 android:text="@string/music" 53 android:drawableTop="@drawable/icon_4" 54 style="@style/main_tab_bottom" /> 55 <RadioButton 56 android:id="@+id/radio_button4" 57 android:tag="radio_button4" 58 android:layout_marginTop="2.0dip" 59 android:text="@string/setting" 60 android:drawableTop="@drawable/icon_5" 61 style="@style/main_tab_bottom" /> 62 </RadioGroup> 63 </LinearLayout> 64 </TabHost>
隐藏了系统默认的Widget，取而代之的是带有图片的Button
java
1 package com.iteye.androidtoast; 2 3 import android.app.TabActivity; 4 import android.content.Intent; 5 import android.os.Bundle; 6 import android.widget.RadioGroup; 7 import android.widget.RadioGroup.OnCheckedChangeListener; 8 import android.widget.TabHost; 9 10 public class MainActivity extends TabActivity implements OnCheckedChangeListener{ 11 /** Called when the activity is first created. */ 12 private TabHost mHost; 13 private RadioGroup radioderGroup; 14 @Override 15 public void onCreate(Bundle savedInstanceState) { 16 super.onCreate(savedInstanceState); 17 setContentView(R.layout.maintabs); 18 //实例化TabHost 19 mHost=this.getTabHost(); 20 21 //添加选项卡 22 mHost.addTab(mHost.newTabSpec("ONE").setIndicator("ONE") 23 .setContent(new Intent(this,OneActivity.class))); 24 mHost.addTab(mHost.newTabSpec("TWO").setIndicator("TWO") 25 .setContent(new Intent(this,TwoActivity.class))); 26 mHost.addTab(mHost.newTabSpec("THREE").setIndicator("THREE") 27 .setContent(new Intent(this,ThreeActivity.class))); 28 mHost.addTab(mHost.newTabSpec("FOUR").setIndicator("FOUR") 29 .setContent(new Intent(this,FourActivity.class))); 30 mHost.addTab(mHost.newTabSpec("FIVE").setIndicator("FIVE") 31 .setContent(new Intent(this,FiveActivity.class))); 32 33 radioderGroup = (RadioGroup) findViewById(R.id.main_radio); 34 radioderGroup.setOnCheckedChangeListener(this); 35 } 36 @Override 37 public void onCheckedChanged(RadioGroup group, int checkedId) { 38 switch(checkedId){ 39 case R.id.radio_button0: 40 mHost.setCurrentTabByTag("ONE"); 41 break; 42 case R.id.radio_button1: 43 mHost.setCurrentTabByTag("TWO"); 44 break; 45 case R.id.radio_button2: 46 mHost.setCurrentTabByTag("THREE"); 47 break; 48 case R.id.radio_button3: 49 mHost.setCurrentTabByTag("FOUR"); 50 break; 51 case R.id.radio_button4: 52 mHost.setCurrentTabByTag("FIVE"); 53 break; 54 } 55 } 56 }
