java您的内容必须有一个id属性为“安卓”的TabHost。安卓应用程序的R.id.tabhost错误
我正在用Android中的eclipse创建一个应用程序。我的软件一直在完美地工作,直到我创建了一个函数,该函数创建了一个新的意图,从我的一个选项卡式活动返回到MainActivity,然后它停止工作,每当我运行它时,就会出现“强制关闭应用程序”错误。我已经删除了该函数,但错误仍然存在
这是我的密码
打包我的行李。主要的
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import 安卓.app.Activity;
import 安卓.app.AlertDialog;
import 安卓.app.TabActivity;
import 安卓.content.Intent;
import 安卓.content.SharedPreferences;
import 安卓.os.Bundle;
import 安卓.view.View;
import 安卓.widget.EditText;
import 安卓.widget.TabHost;
import 安卓.widget.TabHost.TabSpec;
public class MainActivity extends TabActivity {
HttpClient client = new HttpClient();
Security security = new Security();
//file name for storing persistent data for sessions
public static final String PREFS_SESSION = "AccountsFile";
public static String storedEmailName = "userEmail";
public static String storedPasswordName = "userPassword";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/*check if username has been stored*/
// if stored info exists, log the user in with login details and display main layout
if(doesPersistExist(storedEmailName, PREFS_SESSION)){
// auto login user
try
{autologin();}
catch (UnsupportedEncodingException e)
{e.printStackTrace();}
setContentView(R.layout.tabbed_main);
// Once logged in, display tabbed layouts
// Generate tabes suing function generateTags()
// Generate tabs
generateTab("Scan", R.drawable.icon_tab_scan, ScanActivity.class);
generateTab("Recent", R.drawable.icon_tab_recent, RecentActivity.class);
generateTab("Favourites", R.drawable.icon_tab_favourites, FavouritesActivity.class);
generateTab("Settings", R.drawable.icon_tab_settings, SettingsActivity.class);
}
// else, username has not been stored, prompt login
else{
setContentView(R.layout.login);
}
}
// Auto login user if credentials already exist
public void autologin() throws UnsupportedEncodingException{
//deleted contents of function to save room - this function definitely works
}
// Function that logs a user out by deleting the store user credentials
public void logout(){
//Create a sharedPreferences instance
SharedPreferences persist = getSharedPreferences(PREFS_SESSION, 0);
// Delete stored username and password
persist.edit().remove(storedPasswordName).commit();
persist.edit().remove(storedEmailName).commit();
// Rteurn user to login screen
setContentView(R.layout.login);
}
/*storeString*/
//Persistently store a string - used for cookie name and value strings
public Boolean storeString(String PREF_NAME, String stringName, String stringValue){
// We need an Editor object to make preference changes.
// All objects are from 安卓.context.Context
SharedPreferences settings = getSharedPreferences(PREF_NAME, 0);
SharedPreferences.Editor editor = settings.edit();
//commit session name and value to memory
editor.putString(stringName, stringValue);
// Commit the edits
Boolean result = editor.commit();
return result;
}
/*retrieveStoredString*/
//retrieve a persistently stored string from function storeString()
public String retrieveStoredString(String PREF_NAME, String stringName){
SharedPreferences persist = getSharedPreferences(PREF_NAME, 0);
String result = persist.getString(stringName, null);
return result;
}
// Check if persistent store exists
public Boolean doesPersistExist(String key, String PREF_NAME){
SharedPreferences persist = getSharedPreferences(PREF_NAME, 0);
Boolean result = persist.contains(key);
return result;
}
// Function will generate a new tab
public void generateTab(String tabSpec, int id, Class activity){
TabHost tabHost = getTabHost();
// Tab for scan
TabSpec scanspec = tabHost.newTabSpec(tabSpec);
// setting Title and Icon for the Tab
scanspec.setIndicator(tabSpec, getResources().getDrawable(id));
// create intent to start new tabbed activity
Intent scanIntent = new Intent(this, activity);
scanspec.setContent(scanIntent);
// add the tab to the tab layout
tabHost.addTab(scanspec);
}
}
这是我的标签菜单。xml
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
安卓:id="@安卓:id/tabhost"
安卓:layout_width="fill_parent"
安卓:layout_height="fill_parent">
<LinearLayout
安卓:orientation="vertical"
安卓:layout_width="fill_parent"
安卓:layout_height="fill_parent">
<TabWidget
安卓:id="@安卓:id/tabs"
安卓:layout_width="fill_parent"
安卓:layout_height="wrap_content" />
<FrameLayout
安卓:id="@安卓:id/tabcontent"
安卓:layout_width="fill_parent"
安卓:layout_height="fill_parent"/>
</LinearLayout>
</TabHost>
正如我所说,我已经在清单中创建了选项卡式布局,在我尝试添加该功能之前,它工作得非常好,但从那时起,一切都不起作用。这是logcat的日志
08-08 22:11:42.390: D/dalvikvm(1966): GC_FOR_ALLOC freed 37K, 5% free 6387K/6659K, paused 32ms
08-08 22:11:42.390: I/dalvikvm-heap(1966): Grow heap (frag case) to 6.834MB for 513744-byte allocation
08-08 22:11:42.440: D/dalvikvm(1966): GC_FOR_ALLOC freed 8K, 5% free 6881K/7175K, paused 35ms
08-08 22:11:42.490: D/AndroidRuntime(1966): Shutting down VM
08-08 22:11:42.490: W/dalvikvm(1966): threadid=1: thread exiting with uncaught exception (group=0x40226760)
08-08 22:11:42.490: E/AndroidRuntime(1966): FATAL EXCEPTION: main
08-08 22:11:42.490: E/AndroidRuntime(1966): java.lang.RuntimeException: Unable to start activity ComponentInfo{my.main/my.main.MainActivity}: java.lang.RuntimeException: Your content must have a TabHost whose id attribute is '安卓.R.id.tabhost'
08-08 22:11:42.490: E/AndroidRuntime(1966): at 安卓.app.ActivityThread.performLaunchActivity(ActivityThread.java:1751)
08-08 22:11:42.490: E/AndroidRuntime(1966): at 安卓.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1767)
08-08 22:11:42.490: E/AndroidRuntime(1966): at 安卓.app.ActivityThread.access$1500(ActivityThread.java:122)
08-08 22:11:42.490: E/AndroidRuntime(1966): at 安卓.app.ActivityThread$H.handleMessage(ActivityThread.java:1005)
08-08 22:11:42.490: E/AndroidRuntime(1966): at 安卓.os.Handler.dispatchMessage(Handler.java:99)
08-08 22:11:42.490: E/AndroidRuntime(1966): at 安卓.os.Looper.loop(Looper.java:132)
08-08 22:11:42.490: E/AndroidRuntime(1966): at 安卓.app.ActivityThread.main(ActivityThread.java:4028)
08-08 22:11:42.490: E/AndroidRuntime(1966): at java.lang.reflect.Method.invokeNative(Native Method)
08-08 22:11:42.490: E/AndroidRuntime(1966): at java.lang.reflect.Method.invoke(Method.java:491)
08-08 22:11:42.490: E/AndroidRuntime(1966): at com.安卓.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:844)
08-08 22:11:42.490: E/AndroidRuntime(1966): at com.安卓.internal.os.ZygoteInit.main(ZygoteInit.java:602)
08-08 22:11:42.490: E/AndroidRuntime(1966): at dalvik.system.NativeStart.main(Native Method)
08-08 22:11:42.490: E/AndroidRuntime(1966): Caused by: java.lang.RuntimeException: Your content must have a TabHost whose id attribute is '安卓.R.id.tabhost'
08-08 22:11:42.490: E/AndroidRuntime(1966): at 安卓.app.TabActivity.onContentChanged(TabActivity.java:105)
08-08 22:11:42.490: E/AndroidRuntime(1966): at com.安卓.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:245)
08-08 22:11:42.490: E/AndroidRuntime(1966): at 安卓.app.Activity.setContentView(Activity.java:1780)
08-08 22:11:42.490: E/AndroidRuntime(1966): at my.main.MainActivity.onCreate(MainActivity.java:57)
08-08 22:11:42.490: E/AndroidRuntime(1966): at 安卓.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048)
08-08 22:11:42.490: E/AndroidRuntime(1966): at 安卓.app.ActivityThread.performLaunchActivity(ActivityThread.java:1715)
08-08 22:11:42.490: E/AndroidRuntime(1966): ... 11 more
08-08 22:11:42.500: D/dalvikvm(1966): GC_CONCURRENT freed 61K, 4% free 7021K/7239K, paused 2ms+4ms
08-08 22:16:46.110: I/Process(1966): Sending signal. PID: 1966 SIG: 9
08-08 22:20:10.500: V/TLINE(2142): new: 安卓.text.TextLine@40871fb0
08-08 22:20:10.530: V/TLINE(2142): new: 安卓.text.TextLine@40872bf8
08-08 22:22:19.030: I/jdwp(2142): Ignoring second debugger -- accepting and dropping
08-08 22:22:21.210: I/jdwp(2205): Ignoring second debugger -- accepting and dropping
08-08 22:22:21.310: D/dalvikvm(2205): GC_FOR_ALLOC freed 39K, 5% free 6385K/6659K, paused 34ms
08-08 22:22:21.310: I/dalvikvm-heap(2205): Grow heap (frag case) to 6.833MB for 513744-byte allocation
08-08 22:22:21.370: D/dalvikvm(2205): GC_CONCURRENT freed 0K, 5% free 6887K/7175K, paused 3ms+2ms
08-08 22:22:21.400: D/AndroidRuntime(2205): Shutting down VM
08-08 22:22:21.400: W/dalvikvm(2205): threadid=1: thread exiting with uncaught exception (group=0x40226760)
08-08 22:22:21.410: E/AndroidRuntime(2205): FATAL EXCEPTION: main
08-08 22:22:21.410: E/AndroidRuntime(2205): java.lang.RuntimeException: Unable to start activity ComponentInfo{my.main/my.main.MainActivity}: java.lang.RuntimeException: Your content must have a TabHost whose id attribute is '安卓.R.id.tabhost'
08-08 22:22:21.410: E/AndroidRuntime(2205): at 安卓.app.ActivityThread.performLaunchActivity(ActivityThread.java:1751)
08-08 22:22:21.410: E/AndroidRuntime(2205): at 安卓.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1767)
08-08 22:22:21.410: E/AndroidRuntime(2205): at 安卓.app.ActivityThread.access$1500(ActivityThread.java:122)
08-08 22:22:21.410: E/AndroidRuntime(2205): at 安卓.app.ActivityThread$H.handleMessage(ActivityThread.java:1005)
08-08 22:22:21.410: E/AndroidRuntime(2205): at 安卓.os.Handler.dispatchMessage(Handler.java:99)
08-08 22:22:21.410: E/AndroidRuntime(2205): at 安卓.os.Looper.loop(Looper.java:132)
08-08 22:22:21.410: E/AndroidRuntime(2205): at 安卓.app.ActivityThread.main(ActivityThread.java:4028)
08-08 22:22:21.410: E/AndroidRuntime(2205): at java.lang.reflect.Method.invokeNative(Native Method)
08-08 22:22:21.410: E/AndroidRuntime(2205): at java.lang.reflect.Method.invoke(Method.java:491)
08-08 22:22:21.410: E/AndroidRuntime(2205): at com.安卓.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:844)
08-08 22:22:21.410: E/AndroidRuntime(2205): at com.安卓.internal.os.ZygoteInit.main(ZygoteInit.java:602)
08-08 22:22:21.410: E/AndroidRuntime(2205): at dalvik.system.NativeStart.main(Native Method)
08-08 22:22:21.410: E/AndroidRuntime(2205): Caused by: java.lang.RuntimeException: Your content must have a TabHost whose id attribute is '安卓.R.id.tabhost'
08-08 22:22:21.410: E/AndroidRuntime(2205): at 安卓.app.TabActivity.onContentChanged(TabActivity.java:105)
08-08 22:22:21.410: E/AndroidRuntime(2205): at com.安卓.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:245)
08-08 22:22:21.410: E/AndroidRuntime(2205): at 安卓.app.Activity.setContentView(Activity.java:1780)
08-08 22:22:21.410: E/AndroidRuntime(2205): at my.main.MainActivity.onCreate(MainActivity.java:57)
08-08 22:22:21.410: E/AndroidRuntime(2205): at 安卓.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048)
08-08 22:22:21.410: E/AndroidRuntime(2205): at 安卓.app.ActivityThread.performLaunchActivity(ActivityThread.java:1715)
08-08 22:22:21.410: E/AndroidRuntime(2205): ... 11 more
08-08 22:27:25.039: I/Process(2205): Sending signal. PID: 2205 SIG: 9
看起来“您的内容必须有一个id属性为'安卓.R.id.TabHost'error with'的TabHost”是这里的主要错误,但是从在线查看我发现这通常是由于没有在'tabbed_main'中设置id标记。xml’是正确的,但我肯定正确地设置了它。我花了几个小时在网上浏览代码,但不知道为什么它不起作用。任何帮助都将不胜感激!谢谢
# 1 楼答案
那么
我真的不确定,但根据我的回答,一旦他换了
与
这对他很管用。。试试看
编辑 由于这不起作用,下面的答案表明他是通过删除
R.java
文件来实现的,一旦IDE重新生成它(可能是通过重建),它就可以工作了 祝你好运# 2 楼答案
将xml文件重命名为像main这样的唯一文件。xml或其他内容,而不是tabbed_main。xml。还可以清理项目并删除R文件(它将再次重新生成),有时它可以解决您的问题
# 3 楼答案
是的,所以我设法找出了问题所在,所以我想我会与大家分享。问题在于在TabActivity中使用SharedReferences函数。当我将extend改为活动并创建了一个新的MainTabbedActivity来生成选项卡布局的选项卡时,一切都很好
我不是100%确定这是为什么,但我想这可能与上下文有关。我很可能错误地使用了TabActivity,因为该活动所要做的就是为tablayout生成选项卡,而不是执行任何函数。(如果有人知道它不起作用的确切原因,请随时发表评论,我很想知道!)
所以对于将来有类似问题的人,只要在你的主要活动中做你需要做的事情,然后像这样为你的活动创造一个意图