Question

（我对编码很新）嗯，我遇到了以前帖子的解决方案，并想出了如何显示毫秒...但是，我似乎无法让暂停的实例重置回00 ：00：00

我尝试了一些方法，例如mreset elapsedTime并将基数设置为00:00:00，但似乎没有任何效果！有什么建议吗？

这是Java文件：

package com.jackson.eason.stopwatch;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.SystemClock;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Chronometer;
import android.widget.TextView;


public class MainActivity extends Activity {

    /** Called when the activity is first created. */

    private Button startButton;
    private Button pauseButton;
    private Button resetButton;
    private long startTime = 0L;
    private Handler myHandler = new Handler();
    long timeInMillies = 0L;
    long timeSwap = 0L;
    long finalTime = 0L;

    private TextView textTimer;


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        textTimer = (TextView) findViewById(R.id.textTimer);

        startButton = (Button) findViewById(R.id.start);
        startButton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                startTime = SystemClock.uptimeMillis();
                myHandler.postDelayed(updateTimerMethod, 0);

            }
        });

        pauseButton = (Button) findViewById(R.id.stop);
        pauseButton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                timeSwap += timeInMillies;
                myHandler.removeCallbacks(updateTimerMethod);

            }
        });

       //Updated.... Still having errors with parenthesis
    resetButton = (Button) findViewById(R.id.reset);
    resetButton.setOnClickListener(SystemClock.setCurrentTimeMillis()
     timeInMillies = 0L);
    timeSwap = 0L;
    finalTime = 0L;




    }
    private Runnable updateTimerMethod = new Runnable() {

        public void run() {
            timeInMillies = SystemClock.uptimeMillis() - startTime;
            finalTime = timeSwap + timeInMillies;

            int seconds = (int) (finalTime / 1000);
            int minutes = seconds / 60;
            seconds = seconds % 60;
            int milliseconds = (int) (finalTime % 1000);
            textTimer.setText("" + minutes + ":"
                    + String.format("%02d", seconds) + ":"
                    + String.format("%03d", milliseconds));
            myHandler.postDelayed(this, 0);
        }

    };

}

任何帮助将不胜感激！

Answer 1

在您的resetButton操作中尝试将所有值设置回0

Answer 2

在重置按钮部分，您需要包含一个onClick事件，并将时间交换设置为0。像这样：

.setOnClickListener(new View.OnClickListener(){
        public void onClick(View view){
            finalTime = 0;
            timeInMillis = 0L;
            timeSwap = 0L;

不确定如何重置暂停的秒表

2 个答案: