在固定时间后关闭对话框

Question

应用中包含一个对话框。

我想要在x秒后自动关闭这个对话框。前提是如果这段时间用户对应用没有任何操作。

类似弹出的音量拖动条（两秒钟用户没有操作就自动关闭）。

不知道怎么实现？请高手指点，谢谢。

Answer 1

// a dialog
final Dialog dialog = new Dialog(getApplicationContext());

// the code inside run() will be executed if .postDelayed() reaches its delay time
final Runnable runnable = new Runnable() {

    @Override
    public void run() {
        dialog.dismiss(); // hide dialog
    }
};

Button interaction = (Button) findViewById(R.id.bottom);

final Handler h = new Handler();

        // pressing the button is an "interaction" for example
interaction.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {


        h.removeCallbacks(runnable); // cancel the running action (the hiding process)
        h.postDelayed(runnable, 5000); // start a new hiding process that will trigger after 5 seconds
    }
});

追踪用户动作

@Override
public void onUserInteraction(){
    h.removeCallbacks(runnable); // cancel the running action (the hiding process)
    h.postDelayed(runnable, 5000); // start a new hiding process that will trigger after 5 seconds
}