如何在Android应用程序中显示当前日期和时间?
当前回答
String currentDateandTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date());
Toast.makeText(getApplicationContext(), currentDateandTime, Toast.LENGTH_SHORT).show();
其他回答
String formattedDate = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(Calendar.getInstance().getTime());
使用formattedDate作为填充日期的字符串。 在我的情况下:mDateButton.setText(formattedDate);
如果您想以特定的模式获取日期和时间,可以使用
Date d = new Date();
CharSequence s = DateFormat.format("yyyy-MM-dd hh:mm:ss", d.getTime());
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Thread myThread = null;
Runnable runnable = new CountDownRunner();
myThread= new Thread(runnable);
myThread.start();
}
public void doWork() {
runOnUiThread(new Runnable() {
public void run() {
try{
TextView txtCurrentTime= (TextView)findViewById(R.id.lbltime);
Date dt = new Date();
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){
}
}
}
}
你可以试试这种方法
Calendar calendar = Calendar.getInstance();
SimpleDateFormat mdformat = new SimpleDateFormat("HH:mm:ss");
String strDate = "Current Time : " + mdformat.format(calendar.getTime());
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 = new SimpleDateFormat("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 = new TextView(this);
txtView.setText("Current Date and Time : "+formattedDate);
txtView.setGravity(Gravity.CENTER);
txtView.setTextSize(20);
setContentView(txtView);
}
}
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