在安卓系统中防止双击按钮的最佳方法是什么?


当前回答

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。

其他回答

试试这个Kotlin扩展函数:

private var lastClickTime = 0L

fun View.click(action: () -> Unit) {
    setOnClickListener {
        if (SystemClock.elapsedRealtime() - lastClickTime < 600L)
            return@setOnClickListener
        lastClickTime = SystemClock.elapsedRealtime()
        action()
    }
}

它还防止在同一时间点击应用程序的各个部分。

    button.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View view) {
            //to prevent double click
            button.setOnClickListener(null);
        }
    });

我用两个类来解决这个问题,一个类似于@jinshiyi11的答案,另一个是基于显式点击,在这里你只能点击一个按钮一次,如果你想要另一次点击,你必须显式地指出它。

/**
 * Listener que sólo permite hacer click una vez, para poder hacer click
 * posteriormente se necesita indicar explicitamente.
 *
 * @author iberck
 */
public abstract class OnExplicitClickListener implements View.OnClickListener {

    // you can perform a click only once time
    private boolean canClick = true;

    @Override
    public synchronized void onClick(View v) {
        if (canClick) {
            canClick = false;
            onOneClick(v);
        }
    }

    public abstract void onOneClick(View v);

    public synchronized void enableClick() {
        canClick = true;
    }

    public synchronized void disableClick() {
        canClick = false;
    }
}

使用示例:

OnExplicitClickListener clickListener = new OnExplicitClickListener() {
    public void onOneClick(View v) {
        Log.d("example", "explicit click");
        ...
        clickListener.enableClick();    
    }
}
button.setOnClickListener(clickListener);

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).

这个解决方案(Kotlin)对我很有效:

abstract class SingleClickListener : View.OnClickListener {
    private val MIN_CLICK_INTERVAL: Long = 1000
    private var mLastClickTime: Long = 0

    abstract fun onSingleClick(v: View?)

    override fun onClick(v: View?) {
        if (mLastClickTime <= 0) {
            mLastClickTime = SystemClock.uptimeMillis()
            onSingleClick(v)
            return
        }

        if (SystemClock.uptimeMillis() - mLastClickTime <= MIN_CLICK_INTERVAL) {
            return
        }

        mLastClickTime = SystemClock.uptimeMillis()

        onSingleClick(v)
    }
}

用法:

someView.setOnClickListener(object : SingleClickListener() {
    override fun onSingleClick(v: View?) {
        v?.also { klik(it) }
    }
})

或者也可以创建扩展函数,在视图上轻松添加ClickListener:

fun View.click(klik: (View) -> Unit) {
    this.setOnClickListener(object : SingleClickListener() {
        override fun onSingleClick(v: View?) {
            v?.also { klik(it) }
        }
    })
}

// Usage
class XPerimentActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_xperiment_layout)

        submit_button.click {
           // do your magic
        }
    }
}