使用TabHost和FrameLayout实现导航

android的官方Api上面已经明确标出TabActivitywas deprecated in API 13,被弃用.但是TabHost这个组件还是大有可为,是一个很好的UI框架.TabHost结合FrameLayout就可以实现导航

java代码:

MyTabHost

<span style="font-size:18px;">package com.example.tabhost;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.TabHost;
import android.widget.TabHost.OnTabChangeListener;
import android.widget.TabHost.TabSpec;
import android.widget.TabWidget;

public class MyTabHost extends Activity {
private TabHost tabHost;
private TabWidget tabWidget;
private View guid_image1,guid_image2,guid_image3,guid_image4;
@SuppressLint("InflateParams")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tab_host);
// 获取tabHost, tabHost是个容器组件
tabHost = (TabHost)findViewById(R.id.tableH);
// 类似于初始化过程，不调用无法获取到tabWiget,调用addTab需要tabwiget。TabActivity内部已经调用了
tabHost.setup();
guid_image1 = (View)LayoutInflater.from(this).inflate(R.layout.guide_image1, null);
guid_image2 = (View)LayoutInflater.from(this).inflate(R.layout.guide_image2, null);
TabSpec spec1 = tabHost.newTabSpec("tab1").setIndicator(guid_image1).setContent(R.id.content1);
TabSpec spec2 = tabHost.newTabSpec("tab2").setIndicator(guid_image2).setContent(R.id.content2);
tabHost.addTab(spec1);
tabHost.addTab(spec2);
tabWidget = tabHost.getTabWidget();
// tabHost.getTabWidget(); 这一步很重要，没有上一步，必须这一步
tabHost.setOnTabChangedListener(new OnTabChangeListener() {
@Override
public void onTabChanged(String tabId) {
// TODO Auto-generated method stub

}
});
}
}</span>

主布局文件:

activity_tab_host

<span style="font-size:18px;"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TabHost
android:id="@+id/tableH"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<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="0dp"
android:layout_weight="1" //这个权重极重要~~ 不然显示不出相应tab的内容
>
<TextView
android:id="@+id/content1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="消息1"
/>
<TextView
android:id="@+id/content2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="消息2"
/>
<span style="white-space: pre;"> </span></FrameLayout>
</LinearLayout>
</TabHost>
</LinearLayout></span>

布局文件1:

guide_image1
<span style="font-size:18px;"><?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center"
>
<TextView
android:id="@+id/guide1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="~!!~!~!!~!~!"
android:textSize="25sp" >
</TextView>
</LinearLayout></span>

布局文件2:

guide_image2

<span style="font-size:18px;"><?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center"
>
<TextView
android:id="@+id/guide2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="~!!~!~!!~!~!"
android:textSize="25sp" >
</TextView>

</LinearLayout></span><span style="font-size:24px;">
</span>

效果: