安卓我的服務沒有啓動

Question

NewActivity.class（它實際上是服務。遺憾的奇數命名）

import android.app.Service; 
import android.content.Intent; 
import android.os.IBinder; 
import android.util.Log; 


import java.util.Date; 


public class NewActivity extends Service { 

    boolean flag; 

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


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

     Log.d("TAG", "Running"); 
     flag = true; 
    } 

    public int onStartCommand() { 
     Thread t = new Thread(new Runnable() { 
      public void run() { 
       while(flag) { 
        try{ 
         Thread.sleep(1000); 
        } catch(Exception e) { 
         e.printStackTrace(); 
        } 
        Date d = new Date(); 
        Log.i("MyTag", d.toString()); 
       } 
      } 
     }); 
     return START_STICKY; 
    } 

    public void onDestroy() { 
     super.onDestroy(); 
     flag = false; 
    } 
} 

MainActivity.class

public class MainActivity extends AppCompatActivity { 

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

     LinearLayout layout = new LinearLayout(this); 
     Button startBtn = new Button(this); 
     Button isBtn = new Button(this); 

     startBtn.setText("Button"); 
     startBtn.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
       startService(new Intent(MainActivity.this, NewActivity.class)); 
      } 
     }); 



     isBtn.setText("check"); 
     isBtn.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
       if(isServiceRunningCheck()) 
        Log.d("TAG", "Service is running."); 

       else Log.d("TAG", "Service is not running."); 
      } 
     }); 

     layout.addView(startBtn); 
     layout.addView(isBtn); 

     setContentView(layout); 
    } 

    public boolean isServiceRunningCheck() { 
     ActivityManager manager = (ActivityManager) this.getSystemService(Activity.ACTIVITY_SERVICE); 
     for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) { 
      if ("com.example.zzing.test.NewActivity".equals(service.service.getClassName())) { 
       return true; 
      } 
     } 
     return false; 
    } 
} 

AndroidManifest.xml中

<Service android:name=".NewActivity"/> 

該服務不會沒有任何錯誤地啓動。我在NewActivity中看不到任何日誌。我的代碼錯了？ Plz的幫助。

Answer 1

onStartCommand（）函數在您的服務與某些活動綁定時調用。 如果你不想綁定，然後把它onCreate（）方法

public class NewActivity extends Service { 

    boolean flag; 

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


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

     Log.d("TAG", "Running"); 
     flag = true; 
     Thread t = new Thread(new Runnable() { 
      public void run() { 
       while(flag) { 
        try{ 
         Thread.sleep(1000); 
        } catch(Exception e) { 
         e.printStackTrace(); 
        } 
        Date d = new Date(); 
        Log.i("MyTag", d.toString()); 
       } 
      } 
     }); 
    } 

    public int onStartCommand() { 
     return START_STICKY; 
    } 

    public void onDestroy() { 
     super.onDestroy(); 
     flag = false; 
    } 
}