如何在Android应用程序中显示当前日期和时间?
当前回答
显示时间的明显选择是类比时钟视图(AnalogClock View)和数字时钟视图(DigitalClock View)。
例如,如下布局:
<?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>
看起来是这样的:
其他回答
下面是对我有用的代码。请尝尝这个。这是一个简单的方法,从系统调用中获取时间和日期。
public static String getDatetime() {
Calendar c = Calendar .getInstance();
System.out.println("Current time => "+c.getTime());
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mms");
String formattedDate = df.format(c.getTime());
return formattedDate;
}
简单地复制此代码,并希望这为您工作良好。
Calendar c = Calendar.getInstance();
SimpleDateFormat sdf = new SimpleDateFormat("dd:MMMM:yyyy HH:mm:ss a");
String strDate = sdf.format(c.getTime());
使用实例显示当前日期函数。
Calendar c = Calendar.getInstance();
SimpleDateFormat df = new SimpleDateFormat("dd-MMM-yyyy");
String date = df.format(c.getTime());
Date.setText(date);
您一定想导入
进口java.text.SimpleDateFormat; 进口java.util.Calendar;
你一定想用
TextView Date;
Date = (TextView) findViewById(R.id.Date);
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){
}
}
}
}
试试下面的代码:
SimpleDateFormat dateFormat = new SimpleDateFormat(
"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);
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