Android的動作條標籤+碎片+服務

所以，我有2個問題，我的代碼：
1）我想每個標籤保存其狀態。這樣一個TextView顯示更改的文本，如果它被改變。
2）我無法正確連接/綁定和解除綁定服務

文本必須從Service中更改。

請幫幫忙，我不知道我是怎麼認識我的意圖。

MyActivity.javaAndroid的動作條標籤+碎片+服務

package com.example.tabs; 

import android.app.ActionBar; 
import android.app.ActionBar.Tab; 
import android.app.Activity; 
import android.app.ActivityManager; 
import android.app.ActivityManager.RunningServiceInfo; 
import android.app.Fragment; 
import android.app.FragmentTransaction; 
import android.content.ComponentName; 
import android.content.Context; 
import android.content.Intent; 
import android.content.ServiceConnection; 
import android.content.SharedPreferences; 
import android.os.Bundle; 
import android.os.Handler; 
import android.os.IBinder; 
import android.os.Message; 

public class MyActivity extends Activity { 

    private static String ACTION_BAR_INDEX = "ACTION_BAR_INDEX"; 

    private Tab tTab1; 
    private Tab tTab2; 

    private static MyService.MyBinder myBinder; 
    private static Intent myServiceIntent; 
    private static MyService myService; 

    private TabListener<Tab1> tab1Listener; 
    private TabListener<Tab2> tab2Listener; 

    private static ServiceConnection myConnection = new ServiceConnection() { 

     public void onServiceConnected(ComponentName name, IBinder binder) { 
      myBinder = (MyService.MyBinder) binder; 
      myService = myBinder.getService(); 
      myBinder.setCallbackHandler(myServiceHandler); 
     } 

     public void onServiceDisconnected(ComponentName name) { 
      myService = null; 
      myBinder = null; 
     } 
    }; 

    /** Callbackhandler. */ 
    private static Handler myServiceHandler = new Handler() { 

     public void handleMessage(Message message) { 

      super.handleMessage(message); 

      Bundle bundle = message.getData(); 

      if (bundle != null) { 
       String text = bundle.getString("Text1", ""); 

       if (!text.equals("")) { 

       } 
      } 
     } 
    }; 

    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     setContentView(R.layout.main); 

     myServiceIntent = new Intent(this, MyService.class); 
     bindService(myServiceIntent, myConnection, Context.BIND_AUTO_CREATE); 
     if (!isServiceRunning()) { 
      startService(myServiceIntent); 
     } 

     final ActionBar actionBar = getActionBar(); 
     actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); 
     actionBar.setDisplayShowTitleEnabled(false); 

     tTab1 = actionBar.newTab(); 

     tab1Listener = new TabListener<Tab1>(this, R.id.fl_main, Tab1.class); 

     tTab1.setTag("Tab_1"); 
     tTab1.setText("Tab_1"); 
     tTab1.setTabListener(tab1Listener); 

     tTab2 = actionBar.newTab(); 

     tab2Listener = new TabListener<Tab2>(this, R.id.fl_main, Tab2.class); 

     tTab2.setTag("Tab_2"); 
     tTab2.setText("Tab_2"); 
     tTab2.setTabListener(tab2Listener); 

     actionBar.addTab(tTab1, 0); 
     actionBar.addTab(tTab2, 1); 
    } 

    public boolean isServiceRunning() { 
     ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); 
     for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) { 
      if (MyService.class.getName().equals(service.service.getClassName())) { 
       return true; 
      } 
     } 
     return false; 
    } 

    @Override 
    protected void onDestroy() { 
     super.onDestroy(); 

     unbindService(myConnection); 
     stopService(myServiceIntent); 
    } 

    public static class TabListener<T extends Fragment> implements ActionBar.TabListener { 

     private Fragment fragment; 
     private Activity activity; 
     private Class<T> fragmentClass; 
     private int fragmentContainer; 

     public TabListener(Activity activity, int fragmentContainer, Class<T> fragmentClass) { 

      this.activity = activity; 
      this.fragmentContainer = fragmentContainer; 
      this.fragmentClass = fragmentClass; 
     } 

     public void onTabReselected(Tab tab, FragmentTransaction ft) { 
      if (fragment != null) { 
       ft.attach(fragment); 
      } 
     } 

     public void onTabSelected(Tab tab, FragmentTransaction ft) { 
      if (fragment == null) { 
       String fragmentName = fragmentClass.getName(); 
       fragment = Fragment.instantiate(activity, fragmentName); 
       ft.add(fragmentContainer, fragment, fragmentName); 
      } else { 
       ft.attach(fragment); 
      } 
     } 

     public void onTabUnselected(Tab tab, FragmentTransaction ft) { 
      if (fragment != null) { 
       ft.detach(fragment); 
      } 
     } 

    } 

}

MyService.java

package com.example.tabs; 

import android.app.Service; 
import android.content.Intent; 
import android.os.Binder; 
import android.os.Bundle; 
import android.os.Handler; 
import android.os.IBinder; 
import android.os.Message; 

public class MyService extends Service { 

    private final IBinder myBinder = new MyBinder(); 
    private static Handler myServiceHandler; 

    public IBinder onBind(Intent intent) { 
     return myBinder; 
    } 

    public int onStartCommand(Intent intent, int flags, int startId) { 
     super.onStartCommand(intent, flags, startId); 
     return START_STICKY; 
    } 

    public void sendMessage(String sText, int id) { 

     Bundle bundle = new Bundle(); 
     bundle.putString("Text" + id, sText); 
     Message bundleMessage = new Message(); 
     bundleMessage.setData(bundle); 

     myServiceHandler.sendMessage(bundleMessage); 
    } 

    public class MyBinder extends Binder { 

     public MyService getService() { 
      return MyService.this; 
     } 

     public void setCallbackHandler(Handler myActivityHandler) { 
      myServiceHandler = myActivityHandler; 
     } 

     public void removeCallbackHandler() { 
      myServiceHandler = null; 
     } 
    } 
}

Tab1.java

package com.example.tabs; 

import android.app.Activity; 
import android.app.Fragment; 
import android.content.ComponentName; 
import android.content.Context; 
import android.content.Intent; 
import android.content.ServiceConnection; 
import android.os.Bundle; 
import android.os.Handler; 
import android.os.IBinder; 
import android.os.Message; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.ViewGroup; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.TextView; 

public class Tab1 extends Fragment { 

    public static String TAG = Tab1.class.getClass().getSimpleName(); 

    private static TextView tvText; 
    private EditText editText; 

    private static MyService.MyBinder myBinder; 
    private static Intent myServiceIntent; 
    private static MyService myService; 

    private static ServiceConnection myConnection = new ServiceConnection() { 

     public void onServiceConnected(ComponentName name, IBinder binder) { 
      myBinder = (MyService.MyBinder) binder; 
      myService = myBinder.getService(); 
      myBinder.setCallbackHandler(myServiceHandler); 
     } 

     public void onServiceDisconnected(ComponentName name) { 
      myService = null; 
      myBinder = null; 
     } 
    }; 

    /** Callbackhandler. */ 
    private static Handler myServiceHandler = new Handler() { 

     public void handleMessage(Message message) { 

      super.handleMessage(message); 

      Bundle bundle = message.getData(); 

      if (bundle != null) { 
       String text = bundle.getString("Text1", ""); 

       if (!text.equals("")) { 
        tvText.setText(text); 
       } 
      } 
     } 
    }; 


    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
     View view = inflater.inflate(R.layout.tab1, container, false); 



     tvText = (TextView) view.findViewById(R.id.tv_tab1); 

     editText = (EditText) view.findViewById(R.id.editText1); 

     Button btn1 = (Button) view.findViewById(R.id.btn_change_text_1); 

     btn1.setOnClickListener(new OnClickListener() { 

      public void onClick(View v) { 
       myService.sendMessage(String.valueOf(editText.getText()), 1); 
      } 
     }); 

     return view; 
    } 


    @Override 
    public void onAttach(Activity activity) { 

     super.onAttach(activity); 

     myServiceIntent = new Intent(activity, MyService.class); 
     activity.bindService(myServiceIntent, myConnection, Context.BIND_AUTO_CREATE); 
    } 

    @Override 
    public void onDetach() { 

     super.onDetach(); 

     getActivity().unbindService(myConnection); 
    } 
}

Tab2.java

package com.example.tabs; 

import android.app.Activity; 
import android.app.Fragment; 
import android.content.ComponentName; 
import android.content.Context; 
import android.content.Intent; 
import android.content.ServiceConnection; 
import android.os.Bundle; 
import android.os.Handler; 
import android.os.IBinder; 
import android.os.Message; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.ViewGroup; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.TextView; 

public class Tab2 extends Fragment { 

    public static String TAG = Tab2.class.getClass().getSimpleName(); 

    private static TextView tvText; 
    private EditText editText; 

    private static MyService.MyBinder myBinder; 
    private static Intent myServiceIntent; 
    private static MyService myService; 

    private static ServiceConnection myConnection = new ServiceConnection() { 

     public void onServiceConnected(ComponentName name, IBinder binder) { 
      myBinder = (MyService.MyBinder) binder; 
      myService = myBinder.getService(); 
      myBinder.setCallbackHandler(myServiceHandler); 
     } 

     public void onServiceDisconnected(ComponentName name) { 
      myService = null; 
      myBinder = null; 
     } 
    }; 

    /** Callbackhandler. */ 
    private static Handler myServiceHandler = new Handler() { 

     public void handleMessage(Message message) { 

      super.handleMessage(message); 

      Bundle bundle = message.getData(); 

      if (bundle != null) { 
       String text = bundle.getString("Text1", ""); 

       if (!text.equals("")) { 
        tvText.setText(text); 
       } 
      } 
     } 
    }; 

    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
     View view = inflater.inflate(R.layout.tab2, container, false); 

     tvText = (TextView) view.findViewById(R.id.tv_tab2); 

     editText = (EditText) view.findViewById(R.id.editText2); 

     Button btn2 = (Button) view.findViewById(R.id.btn_change_text_2); 

     btn2.setOnClickListener(new OnClickListener() { 

      public void onClick(View v) { 
       myService.sendMessage(String.valueOf(editText.getText()), 2); 
      } 
     }); 

     return view; 
    } 

    @Override 
    public void onAttach(Activity activity) { 

     super.onAttach(activity); 

     myServiceIntent = new Intent(activity, MyService.class); 
     activity.bindService(myServiceIntent, myConnection, Context.BIND_AUTO_CREATE); 
    } 

    @Override 
    public void onDetach() { 

     super.onDetach(); 

     getActivity().unbindService(myConnection); 
    } 

}

main.xml中

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/main" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:background="@android:color/black" 
    android:orientation="vertical" > 
    <FrameLayout 
    android:id="@+id/fl_main" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" > 
</FrameLayout> 


</LinearLayout>

tab1.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:layout_gravity="center" 
    android:gravity="center" 
    android:orientation="vertical" > 

    <EditText 
     android:id="@+id/editText1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginBottom="10dp" 
     android:ems="10" 
     android:inputType="text" > 

     <requestFocus /> 
    </EditText> 

    <Button 
     android:id="@+id/btn_change_text_1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginBottom="10dp" 
     android:text="Change text" /> 

    <TextView 
     android:id="@+id/tv_tab1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="TAB1\nTAB1\nTAB1" /> 

</LinearLayout>

tab2.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:layout_gravity="center" 
    android:gravity="center" 
    android:orientation="vertical" > 

    <EditText 
     android:id="@+id/editText2" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginBottom="10dp" 
     android:ems="10" 
     android:inputType="text" > 

     <requestFocus /> 
    </EditText> 

    <Button 
     android:id="@+id/btn_change_text_2" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginBottom="10dp" 
     android:text="Change text" /> 

    <TextView 
     android:id="@+id/tv_tab2" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginBottom="10dp" 
     android:text="TAB2\nTAB2\nTAB2" /> 

</LinearLayout>

AndroidManifest.xml中

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.tabs" 
    android:versionCode="1" 
    android:versionName="1.0" > 

    <uses-sdk 
     android:minSdkVersion="15" 
     android:targetSdkVersion="17" /> 

    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="TabsPlusService" 
     android:theme="@android:style/Theme.Holo" > 
     <activity 
      android:name="com.example.tabs.MyActivity" 
      android:configChanges="orientation|keyboardHidden|screenSize" 
      android:label="TabsPlusService" 
      android:theme="@android:style/Theme.Holo" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

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

     <service 
      android:name=".MyService" 
      android:enabled="true" > 
     </service> 
    </application> 

</manifest>

來源

2013-07-01 Vladimir

所以，我明白了:)

1）從活動除去所有服務代碼

MainActivity.java

package com.example.tabs; 

import android.app.ActionBar; 
import android.app.ActionBar.Tab; 
import android.app.Activity; 
import android.app.Fragment; 
import android.app.FragmentTransaction; 
import android.os.Bundle; 

public class MyActivity extends Activity { 

    private Tab tTab1; 
    private Tab tTab2; 

    private TabListener<Tab1> tab1Listener; 
    private TabListener<Tab2> tab2Listener; 

    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     setContentView(R.layout.main); 

     final ActionBar actionBar = getActionBar(); 
     actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); 
     actionBar.setDisplayShowTitleEnabled(false); 

     tTab1 = actionBar.newTab(); 

     tab1Listener = new TabListener<Tab1>(this, "tab1", Tab1.class); 

     tTab1.setTag("Tab_1"); 
     tTab1.setText("Tab_1"); 
     tTab1.setTabListener(tab1Listener); 

     tTab2 = actionBar.newTab(); 

     tab2Listener = new TabListener<Tab2>(this, "tab2", Tab2.class); 

     tTab2.setTag("Tab_2"); 
     tTab2.setText("Tab_2"); 
     tTab2.setTabListener(tab2Listener); 

     actionBar.addTab(tTab1, 0); 
     actionBar.addTab(tTab2, 1); 
    } 

    @Override 
    protected void onDestroy() { 
     super.onDestroy(); 

    } 

    public static class TabListener<T extends Fragment> implements ActionBar.TabListener { 

     private Fragment mFragment; 
     private Activity activity; 
     private Class<T> mFragmentClass; 
     private String mTag; 

     public TabListener(Activity activity, String mTag, Class<T> fragmentClass) { 

      this.activity = activity; 
      this.mFragmentClass = fragmentClass; 
      this.mTag = mTag; 
     } 

     public void onTabReselected(Tab tab, FragmentTransaction ft) { 
      if (mFragment != null) { 
       ft.attach(mFragment); 
      } 
     } 

     public void onTabSelected(Tab tab, FragmentTransaction ft) { 
      if (mFragment == null) { 
       mFragment = Fragment.instantiate(activity, mFragmentClass.getName()); 
       ft.add(android.R.id.content, mFragment, mTag); 
      } else { 
       ft.attach(mFragment); 
      } 
     } 

     public void onTabUnselected(Tab tab, FragmentTransaction ft) { 
      if (mFragment != null) { 
       ft.detach(mFragment); 
      } 
     } 

    } 

}

2）添加的服務代碼來tab1.java & tab2.java

Tab1.java

package com.example.tabs; 

    import android.app.ActivityManager; 
    import android.app.ActivityManager.RunningServiceInfo; 
    import android.app.Fragment; 
    import android.content.ComponentName; 
    import android.content.Context; 
    import android.content.Intent; 
    import android.content.ServiceConnection; 
    import android.os.Bundle; 
    import android.os.Handler; 
    import android.os.IBinder; 
    import android.os.Message; 
    import android.view.LayoutInflater; 
    import android.view.View; 
    import android.view.View.OnClickListener; 
    import android.view.ViewGroup; 
    import android.widget.Button; 
    import android.widget.EditText; 
    import android.widget.TextView; 

    public class Tab1 extends Fragment { 

     public static String TAG = Tab1.class.getSimpleName(); 

     private static TextView tvText; 
     private EditText editText; 

     private static MyService.MyBinder myBinder; 
     private static Intent myServiceIntent; 
     private static MyService myService; 

     private static ServiceConnection myConnection = new ServiceConnection() { 

      public void onServiceConnected(ComponentName name, IBinder binder) { 
       myBinder = (MyService.MyBinder) binder; 
       myService = myBinder.getService(); 
       myBinder.setCallbackHandler(myServiceHandler); 
      } 

      public void onServiceDisconnected(ComponentName name) { 
       myService = null; 
       myBinder = null; 
      } 
     }; 

     /** Callbackhandler. */ 
     private static Handler myServiceHandler = new Handler() { 

      public void handleMessage(Message message) { 

       super.handleMessage(message); 

       Bundle bundle = message.getData(); 

       if (bundle != null) { 
        String text = bundle.getString("Text1", ""); 

        if (!text.equals("")) { 
         tvText.setText(text); 
        } 
       } 
      } 
     }; 

     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
      View view = inflater.inflate(R.layout.tab1, container, false); 

      tvText = (TextView) view.findViewById(R.id.tv_tab1); 

      editText = (EditText) view.findViewById(R.id.editText1); 

      Button btn1 = (Button) view.findViewById(R.id.btn_change_text_1); 

      btn1.setOnClickListener(new OnClickListener() { 

       public void onClick(View v) { 
        myService.sendMessage(String.valueOf(editText.getText()), 1); 
       } 
      }); 

      return view; 
     } 

     public void onResume() { 
      super.onResume(); 
      myServiceIntent = new Intent(getActivity(), MyService.class); 
      getActivity().bindService(myServiceIntent, myConnection, Context.BIND_AUTO_CREATE); 
      if (!isServiceRunning()) { 
       getActivity().startService(myServiceIntent); 
      } 
     } 

     public void onPause() { 
      super.onPause(); 
      getActivity().unbindService(myConnection); 
     } 

public void onDestroy() { 
    super.onDestroy(); 

    if (isServiceRunning()) { 
     getActivity().stopService(myServiceIntent); 
    } 

} 

     public boolean isServiceRunning() { 
      ActivityManager manager = (ActivityManager) getActivity().getSystemService(Context.ACTIVITY_SERVICE); 
      for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) { 
       if (MyService.class.getName().equals(service.service.getClassName())) { 
        return true; 
       } 
      } 
      return false; 
     } 
    }

Tab2.java看起來也是同樣

來源

2013-07-01 13:49:16 Vladimir

Android的動作條標籤+碎片+服務

回答

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