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

加上Jim的回答,代码可以变得更简洁:

fun View.setOnSingleClick(onClick: () -> Unit) {
    var lastClickTime = 0L
    setOnClickListener {
        if (currentTimeMillis() > lastClickTime + 750) onClick()
        lastClickTime = currentTimeMillis()
    } 
}

用法:

aView.setOnSingleClick {  }

在Java中有一个本地debounce click监听器

view.setOnClickListener(new DebouncedOnClickListener(1000) { //in milisecs
            @Override
            public void onDebouncedClick(View v) {
                //action
            }
        });

如果你在onClick()中进行计算密集型工作,则禁用按钮或设置不可点击是不够的,因为单击事件可以在禁用按钮之前排队。我写了一个实现OnClickListener的抽象基类,你可以重写,通过忽略任何排队点击来修复这个问题:

/** 
 * This class allows a single click and prevents multiple clicks on
 * the same button in rapid succession. Setting unclickable is not enough
 * because click events may still be queued up.
 * 
 * Override onOneClick() to handle single clicks. Call reset() when you want to
 * accept another click.
 */
public abstract class OnOneOffClickListener implements OnClickListener {
    private boolean clickable = true;

    /**
     * Override onOneClick() instead.
     */
    @Override
    public final void onClick(View v) {
        if (clickable) {
            clickable = false;
            onOneClick(v);
            //reset(); // uncomment this line to reset automatically
        }
    }

    /**
     * Override this function to handle clicks.
     * reset() must be called after each click for this function to be called
     * again.
     * @param v
     */
    public abstract void onOneClick(View v);

    /**
     * Allows another click.
     */
    public void reset() {
        clickable = true;
    }
}

用法与OnClickListener相同,但重写OnOneClick()代替:

OnOneOffClickListener clickListener = new OnOneOffClickListener() {
    @Override
    public void onOneClick(View v) {

        // Do stuff

        this.reset(); // or you can reset somewhere else with clickListener.reset();
    }
};
myButton.setOnClickListener(clickListener);

我希望这能帮助你,把代码放在你的事件处理程序。

// --------------------------------------------------------------------------------

    boolean hasTag = null != which.getTag( R.id.preventing_double_click_tag );

    if ( hasTag ) {
        // Do not handle again...
        return;
    } else {
        which.setTag( R.id.action, Boolean.TRUE );

        which.postDelayed( new Runnable() {
            @Override
            public void run() {
                which.setTag( R.id.action, null );
                Log.d( "onActin", " The preventing double click tag was removed." );
            }

        }, 2000 );
    }

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)