小编Man*_*asi的帖子

我想显示服务状态,如果它正在运行或停止.我使用下面的代码,但它在启动服务之前显示"已停止".当服务启动时,它显示"正在运行".当它再次停止时,它只显示"正在运行".我在设置sharedPreference状态时犯了什么错误.在mainActivity中

  onCreate()
  {
   checkServiceStatus() ;
  }

  private void checkServiceStatus() 
{
    Toast.makeText(getApplicationContext(),"in enableControls", Toast.LENGTH_LONG).show();
    boolean isServiceRunning = AppSettings.getServiceRunning(this);     
    if (isServiceRunning)
    {
        Toast.makeText(getApplicationContext(),"service running", Toast.LENGTH_LONG).show();    
    } 
    else 
    {   
        Toast.makeText(getApplicationContext(),"service stopped", Toast.LENGTH_LONG).show();        
    }
}


  public class AppSettings 
  {
 public static final String SERVICE_STATE = "isServiceRunning";
 public static boolean getServiceRunning(Context context){
         SharedPreferences pref = context.getSharedPreferences(GPSLOGGER_PREF_NAME, 0);

         return pref.getBoolean(SERVICE_STATE, false);
 }

 public static void setServiceRunning(Context context, boolean isRunning){
         SharedPreferences pref = context.getSharedPreferences(GPSLOGGER_PREF_NAME, 0);
         SharedPreferences.Editor editor = pref.edit();

         editor.putBoolean(SERVICE_STATE, isRunning);
         editor.commit();
 }