Question

当进度条状态达到100时，我正在尝试运行一些代码段。（在本例中为diggingStatus）但由于某种原因，Log.d代码被调用2次而不是1次。我猜我的if（diggingStatus == 100）条件是错误的。

 new Thread(new Runnable() {
                    private Handler diggingHandler = new Handler();

                    @Override
                    public void run() {
                        while(diggingStatus < 100){
                            // Update the progress status
                            diggingStatus +=1;

                            try{
                                Thread.sleep(100);
                            }catch(InterruptedException e){
                                e.printStackTrace();
                            }

                            // Update the progress bar
                            diggingHandler.post(new Runnable() {
                                @Override
                                public void run() {
                                    diggingbar.setProgress(diggingStatus);
                                    if(diggingStatus==100){
    //Run this code when progress is completed.
    Log.d("i got called","i got called "); //Why this is called 2 times? 


                                    }
                                }
                            });
                        }




                }
            }).start();

Answer 1

由于您处理异步消息，当两者执行变量diggingStatus已经是100时。

你必须将进度数量发送给处理程序，例如：

                        final int progress = diggingStatus; //get only the current
                        // Update the progress bar
                        diggingHandler.post(new Runnable() {
                            @Override
                            public void run() {
                                diggingbar.setProgress(progress);
                                if(progress==100)
                                     Log.d("i got called","i got called ");
                            }
                        });

为什么Code被调用2次？ Java Android Threads Handler

1 个答案: