Android的吐司开始从服务只显示一次 [英] Android Toast started from Service only displays once

问题描述

我有一个监控套接字连接的服务。当连接丢失，需要显示敬酒通知它重新连接用户。这工作正常的第一次。从那以后，我看到了enqueueToast在日志中，但不显示敬酒。任何想法是AP preciated。我认为这将是一件容易的事情增加，但我必须失去了一些东西。

日志条目

  

信息/ NotificationService（118）：enqueueToast PKG = com.abc   callback=android.app.ITransientNotification$Stub$Proxy@43f7b100   持续时间= 1

code调用吐司

 公共类ConnectionService扩展服务
{.....

公共无效restartConnection（）
{
  尝试
  {
     Log.i（this.toString（），尝试重新连接......）;

     //增加等待之间的每个重试，直到最大达到
     INT睡眠时间= reconnectCounter * MIN_RECON_WAIT;

     如果（睡眠时间与GT; MAX_RECON_WAIT）
     {
        睡眠时间= MAX_RECON_WAIT;
     }

     弦乐味精=的连接已丢失，重新启动尝试将开始：+睡眠时间/ 1000 +秒;

     Log.i（this.toString（），味精）;
     Toast.makeText（getApplicationContext（），味精，Toast.LENGTH_LONG）.show（）;

     视频下载（睡眠时间）;

     //增加计数器
     reconnectCounter ++;

     this.startConnectionThread（）;

  }
  赶上（例外五）
  {
      Log.e（this.toString（），异常：+ e.toString（））;
      e.printStackTrace（）;
  }
} //结束retartConnection
 

解决方案

是的，你可以用runOnUiThread去，这是一个合法的方式。
此外，您可以尝试的处理器选择。无论哪种方式，它应该工作。

下面是从我头顶一些code。我没有SDK，现在来测试它，但我认为它应该给你一个总体思路。

 公共类ConnectionService延伸服务{
  私人处理程序处理程序=新的处理程序（）;

  公共无效restartConnection（）{
     INT睡眠时间= reconnectCounter * MIN_RECON_WAIT;
     如果（睡眠时间与GT; MAX_RECON_WAIT）
     {
        睡眠时间= MAX_RECON_WAIT;
     }
     弦乐味精=的连接已丢失，重新启动尝试将开始：+睡眠时间/ 1000 +秒;
     （新计时器（））。时间表（
     新的TimerTask（）{
        公共无效的run（）{
           handler.post（新的Runnable（）{
              公共无效的run（）{
                 Toast.makeText（getApplicationContext（），msg中，Toast.LENGTH_LONG）.show（）;
                 reconnectCounter ++;
                 this.startConnectionThread（）
              }
           }）;
        }
     }， 睡觉时间）;
  } //结束restartConnection

} //结束ConnectionService
 

I have a service that monitors a socket connection. When the connection is lost it needs to display a Toast informing the user that it is reconnecting. This works fine the first time. After that I see the enqueueToast in the log but the toast is not displayed. Any ideas are appreciated. I thought this was going to be an easy thing to add, but I must be missing something.

Log entry

INFO/NotificationService(118): enqueueToast pkg=com.abc callback=android.app.ITransientNotification$Stub$Proxy@43f7b100 duration=1

Code that calls the Toast

public class ConnectionService extends Service 
{ .....

public void restartConnection()
{
  try
  {
     Log.i(this.toString(), "Attempting to reconnect...");

     // increase the wait between each retry until the max is reached
     int sleepTime = reconnectCounter * MIN_RECON_WAIT;

     if (sleepTime > MAX_RECON_WAIT)
     {
        sleepTime = MAX_RECON_WAIT;
     }

     String msg = "The connection has been lost.  Restart attempt will start in: " + sleepTime/1000 + " seconds";

     Log.i(this.toString(), msg);
     Toast.makeText(getApplicationContext(), msg , Toast.LENGTH_LONG).show();

     Thread.sleep(sleepTime);

     // increment the counter
     reconnectCounter++;

     this.startConnectionThread();

  }
  catch (Exception e)
  {
      Log.e(this.toString(), "Exception: " + e.toString());
      e.printStackTrace();
  }
}// end retartConnection

解决方案

Yeah, you could go with the runOnUiThread, that's a legit way.
Also, you could try the Handler alternative. Either way it should work.

Here is some code from the top of my head. I don't have the SDK now to test it but I think it should give you a general idea.

public class ConnectionService extends Service {  
  private Handler handler = new Handler();

  public void restartConnection(){
     int sleepTime = reconnectCounter * MIN_RECON_WAIT;
     if (sleepTime > MAX_RECON_WAIT)
     {
        sleepTime = MAX_RECON_WAIT;
     }
     String msg = "The connection has been lost.  Restart attempt will start in: " + sleepTime/1000 + " seconds";
     (new Timer()).schedule(
     new TimerTask() {
        public void run() {
           handler.post(new Runnable() {
              public void run() {
                 Toast.makeText(getApplicationContext(), "msg", Toast.LENGTH_LONG).show();
                 reconnectCounter++;
                 this.startConnectionThread()
              }
           });
        }
     }, sleepTime);
  }//end restartConnection

}//end ConnectionService

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