如何显示在Android的计时器 [英] How to display the timer in android

问题描述

我要显示在TextView的计时器在像[19:59]。所以当我点击开始按钮，计时器会显示这样的例子，我想设置高达20 mintues的格式，它会显示像[19:58] [19:87]。可谁能给一些想法或例如code？

解决方案

 包com.example.testproject;

进口java.util.Timer中;
进口java.util.TimerTask中;

进口android.os.Bundle;
进口android.widget.TextView;
进口android.app.Activity;

公共类MainActivity延伸活动{

    公众诠释秒= 60;
    公众诠释分钟= 10;

    @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.activity_main）;

        //声明定时器
        计时器t =新的Timer（）;
        //设置日程表功能和速率
        t.scheduleAtFixedRate（新的TimerTask（）{

            @覆盖
            公共无效的run（）{
                runOnUiThread（新的Runnable（）{

                    @覆盖
                    公共无效的run（）{
                        TextView的电视=（TextView中）findViewById（R.id.main_timer_text）;
                        tv.setText（将String.valueOf（分钟）+：+将String.valueOf（秒））;
                        秒 -  = 1;

                        如果（秒== 0）
                        {
                            tv.setText（将String.valueOf（分钟）+：+将String.valueOf（秒））;

                            秒= 60;
                            分钟=分钟; 1

                        }



                    }

                }）;
            }

        }，0，1000）;
    }

}
 

I want to display the timer in TextView in the format of like [ 19:59].so when i click the start button ,the timer will display like this for example,i want to set upto 20 mintues,it will display like [19:58][19:87].can anyone give some ideas or example code?

解决方案

package com.example.testproject;

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

import android.os.Bundle;
import android.widget.TextView;
import android.app.Activity;

public class MainActivity extends Activity {

    public int seconds = 60;
    public int minutes = 10;

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

        //Declare the timer
        Timer t = new Timer();
        //Set the schedule function and rate
        t.scheduleAtFixedRate(new TimerTask() {

            @Override
            public void run() {
                runOnUiThread(new Runnable() {

                    @Override
                    public void run() {
                        TextView tv = (TextView) findViewById(R.id.main_timer_text);
                        tv.setText(String.valueOf(minutes)+":"+String.valueOf(seconds));
                        seconds -= 1;

                        if(seconds == 0)
                        {
                            tv.setText(String.valueOf(minutes)+":"+String.valueOf(seconds));

                            seconds=60;
                            minutes=minutes-1;

                        }



                    }

                });
            }

        }, 0, 1000);
    }

}

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