Android TabHost组件使用方法详解_Android

最近研究了一下Contacts源码，仿照上面自己写了一个TabHostTest程序，现整理如下：

main.xml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="match_parent"
 android:layout_height="match_parent"> 

 <LinearLayout
  android:orientation="vertical"
  android:layout_width="match_parent"
  android:layout_height="match_parent"> 

  <TabWidget android:id="@android:id/tabs"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
  /> 

  <FrameLayout android:id="@android:id/tabcontent"
   android:layout_width="match_parent"
   android:layout_height="0dip"
   android:layout_weight="1"
  />
 </LinearLayout>
</TabHost>

inner.xml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="match_parent"
 android:layout_height="match_parent"> 

 <LinearLayout
  android:orientation="vertical"
  android:layout_width="match_parent"
  android:layout_height="match_parent"> 

  <FrameLayout android:id="@android:id/tabcontent"
   android:layout_width="fill_parent"
   android:layout_height="0dip"
   android:layout_weight="1"
  /> 

  <TabWidget android:id="@android:id/tabs"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
  /> 

 </LinearLayout>
</TabHost>

  Main.java （主Activity类）：

package com.android.test; 

import android.app.Activity;
import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.provider.CallLog.Calls;
import android.provider.Contacts.Intents.UI;
import android.view.Window;
import android.widget.TabHost; 

public class Main extends TabActivity implements TabHost.OnTabChangeListener {
 private static final int TAB_INDEX_DIALER = 0;
 private static final int TAB_INDEX_CALL_LOG = 1;
 private static final int TAB_INDEX_CONTACTS = 2;
 private static final int TAB_INDEX_FAVORITES = 3; 

 private TabHost mTabHost; 

 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState); 

  final Intent intent = getIntent(); 

  requestWindowFeature(Window.FEATURE_NO_TITLE); 

  setContentView(R.layout.main); 

  mTabHost = getTabHost();
  mTabHost.setOnTabChangedListener(this); 

  // Setup the tabs
  setupDialerTab();
  setupCallLogTab();
  setupContactsTab();
  setupFavoritesTab(); 

  setCurrentTab(intent);
 } 

 public void onTabChanged(String tabId) {
   Activity activity = getLocalActivityManager().getActivity(tabId);
   if (activity != null) {
    activity.onWindowFocusChanged(true);
   }
 }
  private void setupCallLogTab() {
   // Force the class since overriding tab entries doesn't work
   Intent intent = new Intent("com.android.phone.action.RECENT_CALLS"); 

   intent.setClass(this, Inner.class);
   mTabHost.addTab(mTabHost.newTabSpec("call_log")
     .setIndicator("通话记录",
       getResources().getDrawable(R.drawable.ic_tab_unselected_recent))
     .setContent(intent));
  } 

 private void setupDialerTab() {
  Intent intent = new Intent("com.android.phone.action.TOUCH_DIALER");
  intent.setClass(this, Inner.class); 

  mTabHost.addTab(mTabHost.newTabSpec("dialer")
    .setIndicator("拨号",
      getResources().getDrawable(R.drawable.ic_tab_unselected_dialer))
    .setContent(intent));
 } 

 private void setupContactsTab() {
  Intent intent = new Intent(UI.LIST_DEFAULT);
  intent.setClass(this, Main.class); 

  mTabHost.addTab(mTabHost.newTabSpec("contacts")
    .setIndicator("通讯录",
      getResources().getDrawable(R.drawable.ic_tab_unselected_contacts))
    .setContent(intent));
 } 

 private void setupFavoritesTab() {
  Intent intent = new Intent(UI.LIST_STREQUENT_ACTION);
  intent.setClass(this, Inner.class); 

  mTabHost.addTab(mTabHost.newTabSpec("favorites")
    .setIndicator("收藏",
      getResources().getDrawable(R.drawable.ic_tab_unselected_starred))
    .setContent(intent));
 } 

 /**
  * Sets the current tab based on the intent's request type
  *
  * @param intent Intent that contains information about which tab should be selected
  */
 private void setCurrentTab(Intent intent) {
  // Dismiss menu provided by any children activities
  Activity activity = getLocalActivityManager().
    getActivity(mTabHost.getCurrentTabTag());
  if (activity != null) {
   activity.closeOptionsMenu();
  } 

  // Tell the children activities that they should ignore any possible saved
  // state and instead reload their state from the parent's intent
  intent.putExtra("", true); 

  // Choose the tab based on the inbound intent
  String componentName = intent.getComponent().getClassName();
  if (getClass().getName().equals(componentName)) {
   if (false) {
    //in a call, show the dialer tab(which allows going back to the call)
    mTabHost.setCurrentTab(TAB_INDEX_DIALER);
   } else if ((intent.getFlags() & Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY) != 0) {
    // launched from history (long-press home) --> nothing to change
   } else if (true) {
    // The dialer was explicitly requested
    mTabHost.setCurrentTab(TAB_INDEX_DIALER);
   }
  }
 }
} 

Inner.java类：

package com.android.test; 

import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Window;
import android.widget.TabHost;
import android.widget.TabWidget;
import android.widget.TextView; 

public class Inner extends TabActivity implements TabHost.OnTabChangeListener {
 private static final int TAB_INDEX_ALL = 0;
 private static final int TAB_INDEX_MISSED = 1;
 private static final int TAB_INDEX_OUTGOING = 2;
 private static final int TAB_INDEX_RECEIVED = 3; 

 private TabHost mTabHost;
 private TabWidget mTabWidget; 

 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  requestWindowFeature(Window.FEATURE_NO_TITLE);
  setContentView(R.layout.inner); 

  mTabHost = getTabHost();
  mTabHost.setOnTabChangedListener(this); 

  setupTabs();
  mTabWidget = mTabHost.getTabWidget();
  mTabWidget.setStripEnabled(false); 

  for (int i = 0; i < mTabWidget.getChildCount(); i++) { 

   TextView tv = (TextView) mTabWidget.getChildAt(i).findViewById(
     android.R.id.title);
   tv.setTextColor(this.getResources().getColorStateList(
     android.R.color.white)); 

   tv.setPadding(0, 0, 0,(int) tv.getTextSize());
   tv.setText("Tab" + i);
   mTabWidget.getChildAt(i).getLayoutParams().height =(int ) (3* tv.getTextSize()); 

   mTabWidget.getChildAt(i).setBackgroundResource(R.drawable.tab_bg);
  }
 } 

 public void onTabChanged(String tabId) { 

 } 

 private void setupTabs() {
  mTabHost.addTab(mTabHost.newTabSpec("all").setIndicator(
    getString(R.string.inner)).setContent(
    new Intent(this, Other.class)));
  mTabHost.addTab(mTabHost.newTabSpec("Missed").setIndicator(
    getString(R.string.inner)).setContent(
    new Intent(this, Other.class)));
  mTabHost.addTab(mTabHost.newTabSpec("Outgoing").setIndicator(
    getString(R.string.inner)).setContent(
    new Intent(this, Other.class)));
  mTabHost.addTab(mTabHost.newTabSpec("Received").setIndicator(
    getString(R.string.inner)).setContent(
    new Intent(this, Other.class))); 

 }
}

效果图如下：

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