java - 我无法暂停并继续 CountDownTimer

Question

您好，我正在尝试暂停和恢复我的 CountDownTimer，但它不起作用，首先我将 millisUntilFinished 变量设置为 futureMins 并在 onClick() 我的事件监听器的方法 我将 futureMins 设置为 mins 我想在我调用 countDownTimer.start() 时将这些变量相互设置； CountDownTimer 将从最后一次开始，但它不会从最后一次开始 :(

编辑:I solved problem with using this class

import android.content.Intent;

import android.os.Bundle;
import android.os.CountDownTimer;

import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;

import android.view.View;

import android.widget.Button;
import android.widget.TextView;




public class TimeActivity extends AppCompatActivity {

    String output;
    long seconds;


    private long futureMins;
    private long mins = 2401000 ;

    private TextView secText;



    TimeOutReminderService service;

    public boolean onBreak=false;

    Snackbar snackbar;

    CountDownTimer countDownTimer;
    CountDownTimer countDownTimer2;

    public TextView minText;


    public Button pauseButton;
    private Button continueButton;
    private Button silenceButton;


    boolean cameFromSilenceButtonClick=false;


    @Override
    protected void onPause() {
        Log.i("INFO","onPause");
        super.onPause();
    }

    @Override
    protected void onStop() {
        Log.i("INFO","onStop");
        super.onStop();
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {


        super.onCreate(savedInstanceState);
        setTheme(R.style.ZaaTheme);
        setContentView(R.layout.time_activity);

        final View view=findViewById(android.R.id.content);

        pauseButton=(Button)findViewById(R.id.pauseButton);

        minText=(TextView)findViewById(R.id.minuteText);
        secText=(TextView)findViewById(R.id.secondsText);

        continueButton=(Button)findViewById(R.id.continueButton);
        silenceButton=(Button)findViewById(R.id.silenceButton);




        snackbar=Snackbar.make(view,"Unutma!   eğer uygulamadan çıkarsan süren sıfırlanır! ",Snackbar.LENGTH_INDEFINITE);
        snackbar.setAction("Tamam", new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                snackbar.dismiss();
            }
        });
        snackbar.show();






        countDownTimer=new CountDownTimer(mins,1000) {
            @Override
            public void onTick(long millisUntilFinished) {
                minText.setText((formatTimeMinutes(millisUntilFinished)));
                secText.setText(formatTimeSeconds(millisUntilFinished));
                futureMins=millisUntilFinished;


            }

            @Override
            public void onFinish() {
                onBreak=true;
                if (onBreak){
                    Log.i("INFO","User in break time  now!");
                }
                service.startService(new Intent(TimeActivity.this,TimeActivity.class));
                quietButton.setVisibility(View.VISIBLE);
                stopButton.setVisibility(View.INVISIBLE);
                countDownTimer2=new CountDownTimer(300000,1000) {


                    @Override
                    public void onTick(long millisUntilFinished) {
                        minText.setText(formatTimeMinutes(millisUntilFinished));
                        secText.setText(formatTimeSeconds(millisUntilFinished));


                    }

                    @Override
                    public void onFinish() {
                        service.stopService(new Intent(TimeActivity.this,TimeActivity.class));
                        quietButton.setVisibility(View.INVISIBLE);
                    }
                };


            }



        }.start();



        pauseButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                 futureMins=mins;

            if (cameFromQuietButtonClick){
                countDownTimer2.cancel();
                cameFromQuietButtonClick=false;

            }
            if (cameFromQuietButtonClick==false) {
                countDownTimer.cancel();
                continueButton.setVisibility(View.VISIBLE);
                stopButton.setVisibility(View.INVISIBLE);
            }
        });

        continueButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                countDownTimer.start();
                continueButton.setVisibility(View.INVISIBLE);
                stopButton.setVisibility(View.VISIBLE);
            }
        });

        silenceButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                cameFromSilenceButtonClick=true;
                service.stopService(new Intent(TimeActivity.this,TimeActivity.class));
                quietButton.setVisibility(View.INVISIBLE);
                stopButton.setVisibility(View.VISIBLE);
            }
        });



        }




    public String formatTimeMinutes(long mlSeconds){
        output="";
        seconds=mlSeconds/1000;
        long minutes=seconds/60;


        seconds=seconds%60;
        minutes=minutes%60;




        String minutesD=String.valueOf(minutes);






        if (minutes<10) {
            minutesD = "0" + minutes;
        }





        return minutesD;


    }

    public String formatTimeSeconds(long mlSeconds){
        output="";
        seconds=mlSeconds/1000;



        seconds=seconds%60;




        String secondsD=String.valueOf(seconds);




        if (seconds<10) {
            secondsD = "0" + seconds;
        }




        return secondsD;


    }



    }

Answer 1

那是因为您使用原始“mins”值构建了计时器实例。 CountDownTimer 类无法更新，所以为了更新它的时间，这次需要用更新后的值重新构造 CountDownTimer 对象。