Question

我有一个计时器，想要暂停时记录。

这是我的计时器：

 private Runnable updateTimerMethod = new Runnable() {

    public void run() {

        timeInMillies = SystemClock.uptimeMillis() - startTime;
        finalTime = timeSwap + timeInMillies;

        SetReturnTime(finalTime);


        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);
//txt.setText("oxy="+oxy);


    }

};

int sss=0;

public void SetReturnTime(long t){

   sss  = (int) (t/1000);

}

public long ReturnTime(){
    return sss;
}

这些是开始/暂停按钮：

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

        }
    });

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


        }
    });

将使用时间的类：

Button btnCalSpeed;
private EditText distance;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_speed_input);

    distance = (EditText) findViewById(R.id.txtDistance);


    btnCalSpeed = (Button) findViewById(R.id.btnCalSpeed);
    btnCalSpeed.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {

            String distanceToString = distance.getText().toString();
            int IntDistance = new Integer(distanceToString).intValue();
            //int timeTraveled = (int) (finalTime / 1000);

            double Avgspeed = IntDistance/2;

                    Toast toast = new Toast(getApplicationContext());
            toast.setGravity(Gravity.TOP| Gravity.LEFT, 0, 0);
            toast.makeText(SpeedInput.this,"Speed = "+ ReturnTime(), toast.LENGTH_LONG).show();

        }
    });

}




@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_speed_input, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

然而，不知何故，当我显示sss时，值为0.有什么方法可以解决这个问题吗？我想存储最后时间（以毫秒为单位），并在单击“暂停”按钮时将其更改为秒。

Answer 1

/ *试试这个，我不确定* /

    public static int sss=0;  
    private Runnable updateTimerMethod = new Runnable() {
    public void run() {

        timeInMillies = SystemClock.uptimeMillis() - startTime;
        finalTime = timeSwap + timeInMillies;
        sss=SetReturnTime(finalTime);
        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);
//txt.setText("oxy="+oxy);
    }
};

public int SetReturnTime(long t){

   sss  = (int) (t/1000);
   return sss;

}

public long ReturnTime(){
    return sss;
}

pauseButton = (Button) findViewById(R.id.btnPause);
    pauseButton.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            timeSwap += timeInMillies;
            myHandler.removeCallbacks(updateTimerMethod);
       Log.e("getPausedTime",""+sss);

       }
    });

Answer 2

/ *方法一：您要发送到目标类的当前班级* /

Intent i=new Intent(ActivityA.this,ActivityB.class);
i.putExtra("sss",""+sss);
startActivity(i);

/ * onCreate方法中的目标类* /

Intent intent = getIntent();
String sss = intent.getStringExtra("sss");
Log.e("ValueOfsss",""+sss);

/ *方法2：在您的目标类（ActivityB）上只需执行此操作SourceClassName是ActivityA * /

Log.e("ValueOfsss",""+ActivityA.sss);

Android Studio - 如何从我的计时器中获取时间

2 个答案: