android 解决点击太快问题，双击操作2次的问题

private Button button;
private long startTime;

button = (Button)findViewById(R.id.btn_hello);
button.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        //两次点击在一定的时间间隔内,才是双击
        if(startTime!=0){
            long endTime = System.currentTimeMillis();
            //通过判断来控制两次点击的时间差控制范围
            Log.i("tag", "startTimeonClick: "+startTime);
            Log.i("tag", "endTimeonClick: "+endTime);
            if(endTime-startTime<500){
                Toast.makeText(getApplicationContext(), "点击2次", Toast.LENGTH_LONG).show();
            }else{
                Toast.makeText(getApplicationContext(), "点击1次", Toast.LENGTH_LONG).show();
            }
        }
        startTime = System.currentTimeMillis();
    }
});