Java-避免在图像视图android中多次单击

概述我尝试使用此代码来防止在ImageView中多次单击,但这无济于事.BooleanisClicked=false;@OverridepublicvoidonClick(Viewv){if(v==imgClick&&!isClicked){//locktheimageisClicked=true

我尝试使用此代码来防止在ImageVIEw中多次单击,但这无济于事.

    Boolean isClicked = false;    @OverrIDe    public voID onClick(VIEw v)    {        if (v == imgClick && !isClicked)        {                      //lock the image            isClicked = true;            Log.d(TAG, "button click");            try            {                //I try to do some thing and then release the image vIEw                Thread.sleep(2000);            } catch (InterruptedException e)            {                e.printstacktrace();            }            isClicked = false;        }    }

在日志猫中,当我尽快单击ImageVIEw 5次时,可以看到5行“按钮单击”.我可以看到log cat打印第一行,等待一会儿(2秒),然后打印下一行.我想当我单击ImageVIEw时,触发的事件将按顺序移到队列中,不是吗？那么我该如何阻止呢？
我也尝试使用setEnable()或setClickable()代替isClicked变量,但是它也不起作用.

解决方法:

只需尝试此工作代码

    Boolean canClick = true; //make global variable   Handler  myHandler = new Handler();@OverrIDepublic voID onClick(VIEw v){    if (canClick)    {       canClick= false;   //lock the image       myHandler.postDelayed(mMyRunnable, 2000);       //perform  your action here    }}/* give some delay..*/    private Runnable mMyRunnable = new Runnable()    {        @OverrIDe        public voID run()        {            canClick = true;         myHandler.removeMessages(0);        }     };Instead of sleePing in 2 seconds, I use some task like doSomeThing() method (has accessed UI thread), and I don't kNow when it completed. So how can I try your way?

//我提到了这个androIDlink.您可以更有效地处理线程,但是我希望下面的代码对您有用.
//您尝试这个

 Boolean canClick = true; //make global variablepublic voID onClick(VIEw v) {        if(canClick){          new DownloadImageTask().execute();        }    }        private class DownloadImageTask extends AsyncTask<String, VoID, Bitmap> {            protected Bitmap doInBackground(String... urls) {                 Log.d("MSG","Clicked");                 canClick =false;                 //perform your long operation here                return null;             }             protected voID onPostExecute(Bitmap result) {                 canClick =true;             }         }

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