问题描述

求大神看一下哪里错了，急急急急

xmlns:tools=""http://schemas.android.com/tools""
android:id=""@+id/tabhost""
android:layout_width=""match_parent""
android:layout_height=""match_parent""
tools:context="".MainActivity""
tools:ignore=""HardcodedText"" >

<LinearLayout    android:layout_width=""fill_parent""    android:layout_height=""fill_parent""    android:orientation=""vertical"" >    <FrameLayout        android:id=""@android:id/tabcontent""        android:layout_width=""fill_parent""        android:layout_height=""0.0dip""        android:layout_weight=""1.0"" />    <TabWidget        android:id=""@android:id/tabs""        android:layout_width=""fill_parent""        android:layout_height=""wrap_content""        android:layout_weight=""0.0""        android:visibility=""gone"" />    <RadioGroup        android:id=""@+id/rg_bottom""        android:layout_width=""match_parent""        android:layout_height=""40dp""        android:layout_alignParentBottom=""true""        android:layout_alignParentLeft=""true""        android:gravity=""center""        android:orientation=""horizontal"" >        <RadioButton            android:id=""@+id/shouYe""            android:layout_width=""match_parent""            android:layout_height=""wrap_content""            android:layout_gravity=""center""            android:layout_weight=""1""            android:button=""@null""            android:checked=""true""            android:drawableBottom=""@drawable/select_shouye""            android:textColor=""#ffffffff"" />        <RadioButton            android:id=""@+id/sheQuZhuanTi""            android:layout_width=""match_parent""            android:layout_height=""wrap_content""            android:layout_weight=""1""            android:button=""@null""            android:drawableBottom=""@drawable/select_sqzhuanti""            android:gravity=""center""            android:textColor=""#ffffffff"" />        <RadioButton            android:id=""@+id/sheQuFengCai""            android:layout_width=""match_parent""            android:layout_height=""wrap_content""            android:layout_weight=""1""            android:button=""@null""            android:drawableBottom=""@drawable/select_sqfengcai""            android:gravity=""center""            android:textColor=""#ffffffff"" />        <RadioButton            android:id=""@+id/woDeSheQu""            android:layout_width=""match_parent""            android:layout_height=""wrap_content""            android:layout_weight=""1""            android:button=""@null""            android:drawableBottom=""@drawable/select_mysq""            android:gravity=""center""            android:textColor=""#ffffffff"" />    </RadioGroup></LinearLayout>

 package caifu.life.ZhSQ;import android.app.TabActivity;import android.content.Intent;import android.os.Bundle;import android.view.KeyEvent;import android.view.Window;import android.widget.RadioButton;import android.widget.RadioGroup;import android.widget.TabHost;import android.widget.TabWidget;import android.widget.Toast;public class MainActivity extends TabActivity  {    // 退出程序的量    private long exitTime = 0;    public static TabHost mTabHost;    public static TabHost getmTabHost() {         return mTabHost;     }      private RadioGroup gr_bottom;      private RadioButton tab_shouYe tab_zuanTi tab_fengCaitab_mine;     @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //不要窗口标题        requestWindowFeature(Window.FEATURE_NO_TITLE);        mTabHost = getTabHost();        final TabWidget tabWidget = mTabHost.getTabWidget();          tabWidget.setStripEnabled(false);// 圆角边线不启用         //添加n个tab选项卡，定义他们的tab名，指示名，目标屏对应的类          mTabHost.addTab(mTabHost.newTabSpec(""shouye"").setIndicator(""0"")                 .setContent(new Intent(this ShouYeActivity.class)));             mTabHost.addTab(mTabHost.newTabSpec(""zuanti"").setIndicator(""1"")                    .setContent(new Intent(this ZhuanTiActivity.class)));             mTabHost.addTab(mTabHost.newTabSpec(""fengcai"").setIndicator(""2"")                    .setContent(new Intent(this FengCaiActivity.class)));             mTabHost.addTab(mTabHost.newTabSpec(""mine"").setIndicator(""3"")                    .setContent(new Intent(this MineActivity.class)));             gr_bottom = (RadioGroup)findViewById(R.id.rg_bottom);            tab_shouYe = (RadioButton)findViewById(R.id.shouYe);            tab_zuanTi = (RadioButton)findViewById(R.id.sheQuZhuanTi);            tab_fengCai = (RadioButton)findViewById(R.id.sheQuFengCai);            tab_mine = (RadioButton)findViewById(R.id.woDeSheQu);            gr_bottom.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {                 public void onCheckedChanged(RadioGroup group int id) {                     if (id == tab_shouYe.getId()) {                         mTabHost.setCurrentTab(0);                     } else if (id == tab_zuanTi.getId()) {                         mTabHost.setCurrentTab(1);                     } else if (id == tab_fengCai.getId()) {                         mTabHost.setCurrentTab(2);                     } else if (id == tab_mine.getId()) {                         mTabHost.setCurrentTab(3);                     }                 }             });             //设置当前显示哪个标签            mTabHost.setCurrentTab(0);    }    // 再按一次退出程序    @Override    public boolean onKeyDown(int keyCode KeyEvent event) {        if (keyCode == KeyEvent.KEYCODE_BACK                && event.getAction() == KeyEvent.ACTION_DOWN) {            if ((System.currentTimeMillis() - exitTime) > 2000) {                Toast.makeText(getApplicationContext()再按一次退出程序""                        Toast.LENGTH_SHORT).show();                exitTime = System.currentTimeMillis();            } else {                finish();                // 返回桌面操作                Intent home = new Intent(Intent.ACTION_MAIN);                home.addCategory(Intent.CATEGORY_HOME);                startActivity(home);            }            return true;        }        return super.onKeyDown(keyCode event);    }}求大神看一下哪里错了

Your content must have a TabHost whose id attribute is 'android.R.id.tabhost'爆这个错

解决方案

tabhost 没有绑定 id名哦，所以
android:id=""@+id/tabhost"" 这句话 找id是tabhost 的 找不到

解决方案二：
给你的tabhost设置一个id “android.R.id.tabhost”