Question

应用程序从Activity2Activity.java开始，它是Calling Menu.java。我能够看到Activity2Activity.java [Main Activity]中的标签，但是当它调用Other Activity Menu.java标签不会出现时。

清单文件：

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="21" />

<uses-permission
    android:name="android.permission.SET_WALLPAPER"
    android:maxSdkVersion="21" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".MainActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="com.firsttest.MainActivity" />

            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>
    <activity
        android:name=".Activity2Activity"
        android:label="@string/title_activity_activity2" 
        >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name=".MENU"
        android:label="ListMenu" >
        <intent-filter>
            <action android:name="com.firsttest.MENU" />

            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>
</application>

Activity2Activity.java

public class Activity2Activity extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity2);
    Thread timer = new Thread(){
        public void run(){
            try{
                sleep(5000);
            } 
            catch(InterruptedException e){
                e.printStackTrace();
            }
            finally{
                Intent mainActivity = new Intent("com.firsttest.MENU");
                startActivity(mainActivity);
            }

        }
    };
    timer.start();
}
@Override
protected void onPause(){
    super.onPause();
    finish();
}

Menu.java

    public class MENU extends ListActivity{

    String classes[]={"Activity2Activity","TextPlay","Email","Camera","Data","example5"};
    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        // TODO Auto-generated method stub
        super.onListItemClick(l, v, position, id);
        //setContentView(R.layout.activity2);
        String cheese=classes[position];
        Class ourClass;
        try {
            ourClass = Class.forName("com.example.firsttest."+cheese);

        Intent ourIntent = new Intent(MENU.this,ourClass);
        startActivity(ourIntent);
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        Log.i("TagX", "Inside onCreate");
        setListAdapter(new ArrayAdapter<String>(MENU.this,android.R.layout.simple_list_item_1,classes));    
    }
}

Answer 1

以编程方式在menu.java文件中设置标题。

getSupportActionBar().setTitle("Your Title");

OR

DatabaseHelper

Answer 2

requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); setContentView(R.layout.menu); 
this.setTitle("myclass2");

试试这个。告诉我它是否有效

无法为android中的子活动设置标签

2 个答案: