Android实现自定义的时间日期控件

自定义DigitalClock的布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"        xmlns:tools="http://schemas.android.com/tools"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:gravity="center"        android:orientation="vertical"         >        <TextView                android:id="@+id/textViewTime"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:textSize="55sp"                android:text="10:50:30"                android:layout_gravity="center"                android:lines="1" />        <LinearLayout                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:orientation="vertical"                android:layout_gravity="center"                 >                <TextView                        android:id="@+id/textViewWeek"                        android:layout_width="wrap_content"                        android:layout_height="wrap_content"                        android:textSize="20sp"                        android:text="星期X"                        android:lines="1" />                <TextView                        android:id="@+id/textViewDate"                        android:layout_width="wrap_content"                        android:layout_height="wrap_content"                        android:textSize="20sp"                        android:text="XXXX年XX月X日"                        android:lines="1" />        </LinearLayout></LinearLayout>

布局空间设置

DigitalClock

package com.javen.digitalclock;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;import android.content.Context;import android.os.Handler;import android.os.Message;import android.util.AttributeSet;import android.view.LayoutInflater;import android.widget.LinearLayout;import android.widget.TextView;public class DigitalClock extends LinearLayout {        static SimpleDateFormat sdf_time = new SimpleDateFormat("hh:mm:ss");        static SimpleDateFormat sdf_date = new SimpleDateFormat("yyyy年MM月dd日");        static Calendar cal = Calendar.getInstance();        private TextView textViewTime, textViewDate, textViewWeek;//        public DigitalClock(Context context, AttributeSet attrs, int defStyle) {//                super(context, attrs, defStyle);//        }        public DigitalClock(Context context, AttributeSet attrs) {                super(context, attrs);                // 使用layoutinflater把布局加载到本ViewGroup                LayoutInflater inflater = (LayoutInflater) context                                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);                inflater.inflate(R.layout.digitalcolck_layout, this);                textViewTime = (TextView) findViewById(R.id.textViewTime);                textViewDate = (TextView) findViewById(R.id.textViewDate);                textViewWeek = (TextView) findViewById(R.id.textViewWeek);                startThread();        }        public static String getCurrentTime(Date date) {                sdf_time.format(date);                return sdf_time.format(date);        }        public static String getCurrentDate(Date date) {                sdf_date.format(date);                return sdf_date.format(date);        }        public static String getCurrentWeekDay(Date dt) {                String[] weekDays = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };                cal.setTime(dt);                int w = cal.get(Calendar.DAY_OF_WEEK) - 1;                if (w < 0)                        w = 0;                return weekDays[w];        }        private void startThread() {                new Thread(new Runnable() {                        public void run() {                                while (true) {                                        handler.sendEmptyMessage(12);                                        try {                                                Thread.sleep(1000);                                        } catch (InterruptedException e) {                                                // TODO Auto-generated catch block                                                e.printStackTrace();                                        }                                }                        }                }).start();        }        Handler handler = new Handler() {                public void handleMessage(Message msg) {                        super.handleMessage(msg);                        if (msg.what == 12) {                                Date date = new Date();                                textViewTime.setText(getCurrentTime(date));                                textViewDate.setText(getCurrentDate(date));                                textViewWeek.setText(getCurrentWeekDay(date));                        }                }        };}

mainActivity

package com.javen.digitalclock;import android.os.Bundle;import android.app.Activity;import android.view.Menu;public class MainActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.main, menu);        return true;    }}

布局文件main.xml

<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"        xmlns:tools="http://schemas.android.com/tools"        tools:context=".MainActivity"        android:layout_width="match_parent"        android:layout_height="match_parent" >    <com.javen.digitalclock.DigitalClock        android:id="@+id/digitalClock1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"         android:text="DigitalClock"         >    </com.javen.digitalclock.DigitalClock></LinearLayout>

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