我已经尝试了一切来尝试让它发挥作用。我想要一个标签窗口;我按照教程确保每一步都是正确的，但每次我将它加载到AVD上时，都会强行关闭。我是业余爱好者，所以对我很轻松！任何和所有帮助将不胜感激。
logcat的：
06-24 20:49:29.564 1146-1146/com.michail.vector E/Trace﹕ error opening trace file: No such file or directory (2)
06-24 20:49:31.997 1146-1146/com.michail.vector E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.michail.vector/com.michail.vector.MainActivity}: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.michail.vector/com.michail.vector.SimpleVector}: java.lang.RuntimeException: Your content must have a TabHost whose id attribute is 'android.R.id.tabhost'
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access$600(ActivityThread.java:130)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.michail.vector/com.michail.vector.SimpleVector}: java.lang.RuntimeException: Your content must have a TabHost whose id attribute is 'android.R.id.tabhost'
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
at android.app.ActivityThread.startActivityNow(ActivityThread.java:1900)
at android.app.LocalActivityManager.moveToState(LocalActivityManager.java:135)
at android.app.LocalActivityManager.startActivity(LocalActivityManager.java:347)
at android.widget.TabHost$IntentContentStrategy.getContentView(TabHost.java:694)
at android.widget.TabHost.setCurrentTab(TabHost.java:358)
at android.widget.TabHost.addTab(TabHost.java:236)
at com.michail.vector.MainActivity.onCreate(MainActivity.java:40)
at android.app.Activity.performCreate(Activity.java:5008)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access$600(ActivityThread.java:130)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: Your content must have a TabHost whose id attribute is 'android.R.id.tabhost'
at android.app.TabActivity.onContentChanged(TabActivity.java:131)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:259)
at android.app.Activity.setContentView(Activity.java:1867)
at com.michail.vector.SimpleVector.onCreate(SimpleVector.java:10)
at android.app.Activity.performCreate(Activity.java:5008)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
at android.app.ActivityThread.startActivityNow(ActivityThread.java:1900)
at android.app.LocalActivityManager.moveToState(LocalActivityManager.java:135)
at android.app.LocalActivityManager.startActivity(LocalActivityManager.java:347)
at android.widget.TabHost$IntentContentStrategy.getContentView(TabHost.java:694)
at android.widget.TabHost.setCurrentTab(TabHost.java:358)
at android.widget.TabHost.addTab(TabHost.java:236)
at com.michail.vector.MainActivity.onCreate(MainActivity.java:40)
at android.app.Activity.performCreate(Activity.java:5008)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access$600(ActivityThread.java:130)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
06-24 20:49:40.744 148-196/system_process E/PowerManagerService﹕ Excessive delay setting brightness: 193ms, mask=2
06-24 20:49:40.883 148-196/system_process E/PowerManagerService﹕ Excessive delay setting brightness: 141ms, mask=2
06-24 20:55:06.194 148-254/system_process E/ThrottleService﹕ problem during onPollAlarm: java.lang.IllegalStateException: problem parsing stats: java.io.FileNotFoundException: /proc/net/xt_qtaguid/iface_stat_all: open failed: ENOENT (No such file or directory)
MainActivity.java：
package com.michail.vector;
import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;
public class MainActivity extends TabActivity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Create a new tabHost
TabHost tabHost = (TabHost) findViewById(android.R.id.tabhost);
/** SINGLE VECTOR TAB **/
//Used to keep track of tab
TabSpec single = tabHost.newTabSpec("Single Vector");
//Change tab indicator name and icon if necessary
single.setIndicator("Single Vector");
//Intent: Description of an operation to be performed
Intent singleIntent = new Intent(this, SimpleVector.class);
//Uses intent to launch activity as the tab content
single.setContent(singleIntent);
/** TWO VECTOR TAB**/
TabSpec two = tabHost.newTabSpec("Two Vectors");
two.setIndicator("Two Vectors");
Intent TwoIntent = new Intent(this, TwoVectors.class);
two.setContent(TwoIntent);
//Add the tabs
tabHost.addTab(single);
tabHost.addTab(two);
}
}
activity_main.xml中：
<?xml version="1.0" encoding="utf-8"?>
<TabHost
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@android:id/tabhost"
xmlns:android="http://schemas.android.com/apk/res/android">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<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/tab1"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
<LinearLayout
android:id="@+id/tab2"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</FrameLayout>
</LinearLayout>
</TabHost>
的AndroidManifest.xml：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.michail.vector"
android:versionCode="1"
android:versionName="1.0">
<application
android:icon="@drawable/ic_launcher"
android:label="Vectors"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="Vectors" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".SimpleVector" />
<activity android:name=".TwoVectors" />
</application>
</manifest>
如果我需要提供任何其他类关联或xml文件，请询问。我包括了我认为回答这个问题所必需的内容。提前谢谢。
编辑：我决定使用带按钮的主屏幕，而不是制表符。这是一个简单的设计，我知道它会起作用答案 0 :(得分：1)
扩展TabActivity应如下所示：
TabHost mTabHost = getTabHost();
请注意，tabhost已弃用，建议将TabLayout与片段一起使用。
答案 1 :(得分：0)
嘿，我刚才遇到了和你一样的问题，但我不得不将我的MainActivity从TabActivity扩展到Activity并清理我的项目。每件事都运行得很好。试试吧