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捕获两次物理按钮点击

发布于 2024-09-29 06:02:40 字数 80 浏览 5 评论 0原文

如何捕获任何物理按钮（包括光学按钮）的两次点击？

就像 QuickDesk 通过单击两次主页按钮所做的那样。

谢谢

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臻嫒无言 2024-10-06 06:02:40

只是一个想法：
如果Android中没有API可以处理这个问题，那么你可以尝试推迟关于单/双/三等的结论。通过在覆盖的 hadrware 按钮处理程序中设置一个小的超时（例如大约 300 毫秒）来单击，同时计算对该特定按钮的调用次数，在计时器滴答时检查它，您就得到了它。

编辑：

这是我的一些想法。请稍微调整一下以获得更优化的性能。

private Timer mDoubleClickTimer;
private boolean possibleDoubleClick = false;

@Override
public boolean onKeyUp(int keyCode, KeyEvent event){
    if(keyCode==KeyEvent.KEYCODE_MENU){ //or whatever key you want to check for double-clicks
        if(mDoubleClickTimer!=null) {mDoubleClickTimer.cancel();}
        if(!possibleDoubleClick){
            possibleDoubleClick = true;
            mDoubleClickTimer = new Timer();
            mDoubleClickTimer.schedule(new TimerTask() {
                @Override
                public void run() {
                    //single click detected
                    //handle it here
                    possibleDoubleClick = false;
                }
            },300);
        }else{
            //double click detected
            //handle it here
            possibleDoubleClick = false;
        }
//... other key processing if you need it
return false;
}

Just an idea:
If there is no API already in Android to handle that then you could try deferring the conclusion about the single/double/triple/etc. click by setting a small timeout (say around ~300ms) in that overridden hadrware button handler and in the meantime count the number of calls made to that specific button, check it when the timer ticks and you've got it.

Edit:

Here is something from the top of my head. Do tweak it a bit for more optimized performace.

private Timer mDoubleClickTimer;
private boolean possibleDoubleClick = false;

@Override
public boolean onKeyUp(int keyCode, KeyEvent event){
    if(keyCode==KeyEvent.KEYCODE_MENU){ //or whatever key you want to check for double-clicks
        if(mDoubleClickTimer!=null) {mDoubleClickTimer.cancel();}
        if(!possibleDoubleClick){
            possibleDoubleClick = true;
            mDoubleClickTimer = new Timer();
            mDoubleClickTimer.schedule(new TimerTask() {
                @Override
                public void run() {
                    //single click detected
                    //handle it here
                    possibleDoubleClick = false;
                }
            },300);
        }else{
            //double click detected
            //handle it here
            possibleDoubleClick = false;
        }
//... other key processing if you need it
return false;
}

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