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我在一个活动中有两个标签。当我使用两个选项卡运行应用程序时，它显示强制关闭错误。当我通过注释tabHost.addTab(spec)wifisettings 选项卡的行来运行相同的应用程序时，时钟设置选项卡正在打开。但我需要打开两个选项卡，即 wifi 设置和时钟设置。

代码在这里：

 setContentView(R.layout.preferences);
    pref_close   = (Button) findViewById(R.id.close_prefs);
    TabHost tabHost = getTabHost();  // The activity TabHost
    TabHost.TabSpec spec;  // Resusable TabSpec for each tab
    Intent intent;  // Reusable Intent for each tab

    // Create an Intent to launch an Activity for the tab (to be reused)
    intent = new Intent( WifiManager.ACTION_PICK_WIFI_NETWORK);

    // Initialize a TabSpec for each tab and add it to the TabHost
    spec = tabHost.newTabSpec("wifi").setIndicator("Wifi Settings",null).setContent(intent);
    tabHost.addTab(spec);

    // Do the same for the other tabs
    intent = new Intent(this, AppSettings.class);

    spec = tabHost.newTabSpec("settings").setIndicator(" Clock Settings",null).setContent(intent);
    tabHost.addTab(spec);

    tabHost.setCurrentTab(0);

    pref_close.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {

            finish();               
        }

});
}
   }

相同的代码适用于设备（​​Android3.0.1），但不适用于设备（​​4.1.1）。我的日志是：

03-30 07:47:35.921: E/AndroidRuntime(8712): FATAL EXCEPTION: main
03-30 07:47:35.921: E/AndroidRuntime(8712): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.visionexceed.timeclock/com.vision.timeclock.activity.Preferences}: java.lang.IllegalArgumentException: you must specify a way to create the tab content
03-30 07:47:35.921: E/AndroidRuntime(8712):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2122)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at android.app.ActivityThread.access$600(ActivityThread.java:140)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1228)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at android.os.Handler.dispatchMessage(Handler.java:99)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at  android.os.Looper.loop(Looper.java:137)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at android.app.ActivityThread.main(ActivityThread.java:4895)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at java.lang.reflect.Method.invokeNative(Native Method)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at java.lang.reflect.Method.invoke(Method.java:511)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:994)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:761)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at dalvik.system.NativeStart.main(Native Method)
03-30 07:47:35.921: E/AndroidRuntime(8712): Caused by: java.lang.IllegalArgumentException:  you must specify a way to create the tab content
03-30 07:47:35.921: E/AndroidRuntime(8712):     at android.widget.TabHost.addTab(TabHost.java:231)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at com.visionexceed.timeclock.activity.Preferences.onCreate(Preferences.java:35)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at android.app.Activity.performCreate(Activity.java:5163)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
03-30 07:47:35.921: E/AndroidRuntime(8712):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2061)
4

2 回答 2

0

我已经检查了您的代码及其在 4.0 以下设备中的工作正常。检查 4.0 设备中没有选项卡的代码。

因为它在 4.0 以上的设备中工作，请检查这个和这个链接。

于 2013-03-30T09:28:03.437 回答
0

You cannot embed a third-party activity into your app's UI. At best, you will get the widgets, but nothing will work, because you do not have the permissions that the third-party app has. At worst, you will crash, as you see here.

Please launch WifiManager.ACTION_PICK_WIFI_NETWORK as a regular activity, outside of your tabs.

于 2013-03-30T11:19:30.180 回答