这里有新鲜出炉的精品教程,程序狗速度看过来!
Android 是一种基于 Linux 的自由及开放源代码的操作系统,主要使用于移动设备,如智能手机和平板电脑,由 Google 公司和开放手机联盟领导及开发。尚未有统一中文名称,中国大陆地区较多人使用 "安卓" 或 "安致"。
这篇文章主要介绍了 Android 动态显示当前年月日时分秒系统时间的示例代码, 需要的朋友可以参考下
在布局文件中放一个 TextView 用来显示时间,如下所示:
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout
- xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:background="@android:color/white">
- <TextView
- android:id="@+id/mytime"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:gravity="center"
- android:textColor="@android:color/black"
- android:textSize="36sp"/>
- </LinearLayout>
开启一个线程,然后通过 handler 发消息,来实时的更新 TextView 上显示的系统时间:
- import android.app.Activity;
- import android.os.Bundle;
- import android.os.Handler;
- import android.os.Message;
- import android.text.format.DateFormat;
- import android.widget.TextView;
- public class TestActivity extends Activity {
- private static final int msgKey1 = 1;
- private TextView mTime;
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.time);
- mTime = (TextView) findViewById(R.id.mytime);
- new TimeThread().start();
- }
- public class TimeThread extends Thread {
- @Override
- public void run () {
- do {
- try {
- Thread.sleep(1000);
- Message msg = new Message();
- msg.what = msgKey1;
- mHandler.sendMessage(msg);
- }
- catch (InterruptedException e) {
- e.printStackTrace();
- }
- } while(true);
- }
- }
- private Handler mHandler = new Handler() {
- @Override
- public void handleMessage (Message msg) {
- super.handleMessage(msg);
- switch (msg.what) {
- case msgKey1:
- mTime.setText(getTime());
- break;
- default:
- break;
- }
- }
- };
- //获得当前年月日时分秒星期
- public String getTime(){
- final Calendar c = Calendar.getInstance();
- c.setTimeZone(TimeZone.getTimeZone("GMT+8:00"));
- String mYear = String.valueOf(c.get(Calendar.YEAR)); // 获取当前年份
- String mMonth = String.valueOf(c.get(Calendar.MONTH) + 1);// 获取当前月份
- String mDay = String.valueOf(c.get(Calendar.DAY_OF_MONTH));// 获取当前月份的日期号码
- String mWay = String.valueOf(c.get(Calendar.DAY_OF_WEEK));
- String mHour = String.valueOf(c.get(Calendar.HOUR_OF_DAY));//时
- String mMinute = String.valueOf(c.get(Calendar.MINUTE));//分
- String mSecond = String.valueOf(c.get(Calendar.SECOND));//秒
- if("1".equals(mWay)){
- mWay ="天";
- }else if("2".equals(mWay)){
- mWay ="一";
- }else if("3".equals(mWay)){
- mWay ="二";
- }else if("4".equals(mWay)){
- mWay ="三";
- }else if("5".equals(mWay)){
- mWay ="四";
- }else if("6".equals(mWay)){
- mWay ="五";
- }else if("7".equals(mWay)){
- mWay ="六";
- }
- return mYear + "年" + mMonth + "月" + mDay+"日"+" "+"星期"+mWay+" "+mHour+":"+mMinute+":"+mSecond;
- }
- }
以上所述是小编给大家介绍的 Android 动态显示当前年月日时分秒系统时间,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对 PHPERZ 网站的支持!
来源: http://www.phperz.com/article/17/0826/337632.html