Question

如何在两个单独的TextView中打印系统日期和系统时间？

Answer 1

使用日历并获取时间和日期

    final Calendar c = Calendar.getInstance();       
    hour = c.get(Calendar.HOUR_OF_DAY);
    minute = c.get(Calendar.MINUTE);             

    if (c.get(Calendar.AM_PM) == Calendar.AM)
        am_pm = "AM";
    else if (c.get(Calendar.AM_PM) == Calendar.PM) 
        am_pm = "PM";

并使用此

Calendar c = Calendar.getInstance();   

    SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    String formattedDate = df.format(c.getTime());        
    Toast.makeText(this, formattedDate, Toast.LENGTH_SHORT).show();

  // Now we display formattedDate value in TextView
    TextView txtView = new TextView(this);
    txtView.setText("Current Date and Time : "+formattedDate);
    txtView.setGravity(Gravity.CENTER);
    txtView.setTextSize(20);
    setContentView(txtView);

Answer 2

实际上，使用Time.getCurrentTimezone（）设置设备上的当前时区更安全，否则您将获得UTC的当前时间。

Time today = new Time(Time.getCurrentTimezone());
today.setToNow();

然后，您可以获得所需的所有日期字段，例如：

textViewDay.setText(today.monthDay);             // Day of the month (0-31)
textViewMonth.setText(today.month);              // Month (0-11)
textViewYear.setText(today.year);                // Year 
textViewTime.setText(today.format("%k:%M:%S"));  // Current time

有关所有详细信息，请参阅http://developer.android.com/reference/android/text/format/Time.html课程。

Answer 3

TextView tvDate = (TextView)findViewById(R.id.dateText);
TextView tvTime = (TextView)findViewById(R.id.timeText);
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd");
SimpleDateFormat timeFormat = new SimpleDateFormat("HH:mm:ss a");
Calendar c = Calendar.getInstance();
tvDate.setText(dateFormat.format(c.getTime()));
tvTime.setText(timeFormat.format(c.getTime()));

SystemDate和SystemTime在两个单独的TextView中

3 个答案: