在安卓系统中防止双击按钮的最佳方法是什么?


当前回答

扩展的Kotlin方法:

fun View.setOneTimeClickListener(delayMillis: Long = 1000, block: () -> Unit) {
    setOnClickListener {
        this.isEnabled = false
        block()
        postDelayed({ isEnabled = true }, delayMillis)
    }

在代码中的用法:

someView.setOneTimeClickListener { someFun() }

delayMillis参数可用于设置按钮将被禁用的时间。

someView.setOneTimeClickListener(500) { someFun() }

其他回答

我们可以像这样使用按钮进行同步:

示例#1 (Java)

@Override
public void onClick(final View view) {
    synchronized (view) {

        view.setEnabled(false);

        switch (view.getId()) {
            case R.id.id1:
                ...
                break;
            case R.id.id2:
                ...
                break;
                ...
        }

        new Handler().postDelayed(new Runnable() {

            @Override
            public void run() {
                view.setEnabled(true);
            }
        }, 1000);
    }
}

示例#2 (kotlin)使用synchronized

myButton.setOnClickListener { view ->
            synchronized(view) {
                view.isEnabled = false

                // do something

                view.postDelayed({ view.isEnabled = true }, 500L)
            }
        }

祝你好运)

试试这个,它是有效的:

mButton.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View v) {

                mSlotLayout.setEnabled(false);

        //      do your work here

                Timer buttonTimer = new Timer();
                buttonTimer.schedule(new TimerTask() {

                    @Override
                    public void run() {

                        runOnUiThread(new Runnable() {

                            @Override
                            public void run() {
                                mButton.setEnabled(true);
                            }
                        });
                    }
                }, 500); // delay button enable for 0.5 sec
    }
});

Setting the button as clickable false upon clicking and true once it is desired to make the button clickable again is the right approach. For instance, consider the following scenario: you are making a service call upon click of a button and once the service is done you want to display a dialog. For this, once the button is clicked you can set setClickable(false) and once the service responds you will do setClicklable(true) through a reference you pass to your custom dialog. When dialog invokes isShowing() you can trigger the listener and setClicklable(true).

我更喜欢使用信号量块。它是线程安全的,不仅可以用于按钮。

代码示例很简单:

private UtilsSemaphore buttonSemaphore = new UtilsSemaphore();

public void onClick(View view)
{

    boolean isAllowed = buttonSemaphore.lock();

    if(!isAllowed)
    {
        return;
    }

    final View clickedButton = view;

    clickedButton.setEnabled(false);

    /* some code */

    buttonSemaphore.unlock();
    clickedButton.setEnabled(true);
}


public class UtilsSemaphore {

    public int counter = 0;

    public boolean lock()
    {
        int counterValue = ++counter;
        boolean isAllowed = counterValue < 2;

        if(!isAllowed)
        {
            unlock();
        }

        return isAllowed;
    }

    public void unlock()
    {
        --counter;
    }

}

如果按钮做的唯一一件事是启动一个新活动,这个问题可以通过“singleTop”活动启动模式和在意图上设置FLAG_ACTIVITY_CLEAR_TOP来解决。这种方法不适用于复杂活动的层次结构,但适用于简单的树状应用程序结构。