java – Android：在调用函数之前实现1秒间隔计时器

我试图在重置游戏之前引入1秒暂停(resetGame()).按下按钮后. bAnswer1文本等于ansewrArray [0].在newQuestionTimer()中设置的1秒延迟后,App力会关闭.

import java.util.Timer;
import java.util.TimerTask;

Timer timer = new Timer();

bAnswer1.setonClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // Todo Auto-generated method stub
                if(bAnswer1.getText().toString().equals(answerArray[0]))
                {
                    bAnswer1.setBackgroundColor(Color.GREEN);
                    newQuestionTimer();                 
                }
                else
                {
                    bAnswer1.setBackgroundColor(Color.RED);
                    guess++;
                }
            }
        });

public void newQuestionTimer()
{
    timer.schedule(new TimerTask() {
        @Override
        public void run() {
            resetGame();
        }
    },1000);
}

最佳答案

您正在从在后台线程上运行的计时器更新ui. Ui只能在ui线程上更新.

您可以使用处理程序

   Handler handler = new Handler();
   handler.postDelayed(new Runnable(){
        @Override
        public void run() {
            bAnswer2.setBackgroundColor(Color.TRANSPARENT);           
            bAnswer3.setBackgroundColor(Color.TRANSPARENT);         
            bAnswer4.setBackgroundColor(Color.TRANSPARENT);
        }
    },1000);