Android多种方法显示当前日期和时间

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问题：

RBADS

如何在Android应用中显示当前日期和时间？

答案：

ordid

这个有多种解决方法。我假设你想把当前日期和时间放在TextView上。

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String currentDateTimeString = DateFormat.getDateTimeInstance().format(newDate());  // textView is the TextView view that should display it textView.setText(currentDateTimeString);

文档里可以阅读更多，点击 here 。你可以在那里读到更多信息，来更改用于转换的格式。

user647826

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public class XYZ extends Activity {       /** Called when the activity is first created. */     @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         //setContentView(R.layout.main);           Calendar c = Calendar.getInstance();         System.out.println("Current time => "+c.getTime());           SimpleDateFormat df = newSimpleDateFormat("yyyy-MM-dd HH:mm:ss");         String formattedDate = df.format(c.getTime());         // formattedDate have current date/time         Toast.makeText(this, formattedDate, Toast.LENGTH_SHORT).show();           // Now we display formattedDate value in TextView         TextView txtView = newTextView(this);         txtView.setText("Current Date and Time : "+formattedDate);         txtView.setGravity(Gravity.CENTER);         txtView.setTextSize(20);         setContentView(txtView);     }   }

Prashant

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public void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);       setContentView(R.layout.main);     Thread myThread = null;       Runnable runnable = newCountDownRunner();     myThread= newThread(runnable);       myThread.start();   }   public void doWork() {     runOnUiThread(newRunnable() {         public void run() {             try{                 TextView txtCurrentTime= (TextView)findViewById(R.id.lbltime);                     Date dt = newDate();                     int hours = dt.getHours();                     int minutes = dt.getMinutes();                     int seconds = dt.getSeconds();                     String curTime = hours + ":"+ minutes +":" + seconds;                     txtCurrentTime.setText(curTime);             }catch(Exception e) {}         }     }); }     class CountDownRunner implements Runnable{     // @Override     public void run() {             while(!Thread.currentThread().isInterrupted()){                 try{                 doWork();                     Thread.sleep(1000);                 } catch(InterruptedException e) {                         Thread.currentThread().interrupt();                 }catch(Exception e){                 }             }     } }

Dave Webb

要展示当前时间， AnalogClockView和DigitalClockView是明智的选择。

例如下面的布局：

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<?xml version="1.0" encoding="utf-8"?> <LinearLayout     xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     android:orientation="vertical">       <AnalogClock         android:layout_width="fill_parent"         android:layout_height="wrap_content"/>       <DigitalClock         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:gravity="center"         android:textSize="20sp"/> </LinearLayout>

看起来是这个样子：

fred

我自己的展示方法：

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Calendar c = Calendar.getInstance();   String sDate = c.get(Calendar.YEAR) + "-" + c.get(Calendar.MONTH) + "-" + c.get(Calendar.DAY_OF_MONTH) + " at " + c.get(Calendar.HOUR_OF_DAY) + ":" + c.get(Calendar.MINUTE);

ZuzooVn

如果你想用特定的模式展示日期和时间，可以用这个：

1 2	Date d = newDate(); CharSequence s = DateFormat.format("yyyy-MM-dd hh:mm:ss", d.getTime());

Thomas V J

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Calendar c = Calendar.getInstance(); int month=c.get(Calendar.MONTH)+1; String sDate = c.get(Calendar.YEAR) + "-"+ month+"-" + c.get(Calendar.DAY_OF_MONTH) + "T" + c.get(Calendar.HOUR_OF_DAY)+":"+c.get(Calendar.MINUTE)+":"+c.get(Calendar.SECOND);

这个展示日期的格式是 2010-05-24T18:13:00

chetan

这能显示当前时间和日期：

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public String getCurrDate() {     String dt;     Date cal = Calendar.getInstance().getTime();     dt = cal.toLocaleString();     return dt; }

Hemant

如下代码：

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SimpleDateFormat dateFormat = newSimpleDateFormat(                 "yyyy/MM/dd HH:mm:ss");         Calendar cal = Calendar.getInstance();         System.out.println("time => "+ dateFormat.format(cal.getTime()));           String time_str = dateFormat.format(cal.getTime());           String[] s = time_str.split(" ");           for(int i = 0; i < s.length; i++) {              System.out.println("date  => "+ s[i]);         }           int year_sys = Integer.parseInt(s[0].split("/")[0]);         int month_sys = Integer.parseInt(s[0].split("/")[1]);         int day_sys = Integer.parseInt(s[0].split("/")[2]);           int hour_sys = Integer.parseInt(s[1].split(":")[0]);         int min_sys = Integer.parseInt(s[1].split(":")[1]);           System.out.println("year_sys  => "+ year_sys);         System.out.println("month_sys  => "+ month_sys);         System.out.println("day_sys  => "+ day_sys);           System.out.println("hour_sys  => "+ hour_sys);         System.out.println("min_sys  => "+ min_sys);

原文链接：Display the current time and date in an Android application