Android 日历插件

package com.wei.androidtest.widgets;import android.appwidget.AppWidgetManager;import android.appwidget.AppWidgetProvider;import android.content.ComponentName;import android.content.Context;import android.content.Intent;import android.util.Log;import android.widget.Toast;/** * 日历插件 * @author WEI * */public class CalendarWidget extends AppWidgetProvider{    @Override    public void onUpdate(final Context context, final AppWidgetManager appWidgetManager, int[] appWidgetIds)    {        Log.e("widget", "--- onUpdate ---");        super.onUpdate(context, appWidgetManager, appWidgetIds);        context.startService(new Intent(context, TimerService.class));    }    @Override    public void onDeleted(Context context, int[] appWidgetIds)     {        Log.e("widget", "--- onDeleted ---");        super.onDeleted(context, appWidgetIds);    }    // 插件被激活时启动计时service    @Override    public void onEnabled(Context context)    {        Log.e("widget", "--- onEnabled ---");        super.onEnabled(context);        context.startService(new Intent(context, TimerService.class));    }    // 插件被移除时停止计时service    @Override    public void onDisabled(Context context)     {        Log.e("widget", "--- onDisabled ---");        super.onDisabled(context);        context.stopService(new Intent(context, TimerService.class));    }    // AppWidgetProvider本身继承自BroadcastReceiver,所以可以在这里监听广播    @Override    public void onReceive(Context context, Intent intent)     {        super.onReceive(context, intent);        Log.e("widget", "--- onReceive ---");        String action = intent.getAction();        Log.e("action", "--- " + action + " ---");        if (action.equals("com.wei.test"))         { // 点击事件            try {                // 如被点击则启动系统日历                Intent intent1 = new Intent();                intent1.setComponent(new ComponentName("com.android.calendar", "com.android.calendar.LaunchActivity"));                intent1.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);  // 如果不是在Activity内部启动Activity。则要加上此标志                context.startActivity(intent1);            } catch (Exception e) {                Log.e("exception : ", e.getMessage());                Toast.makeText(context, e.getMessage(), Toast.LENGTH_SHORT).show();            }        }        else if (action.equals("android.appwidget.action.SCREEN_OFF"))        { // 收到锁屏广播，则停止计时service。以节省电源及内存，提高性能            context.stopService(new Intent(context, TimerService.class));        }        else if (action.equals(Intent.ACTION_USER_PRESENT))         { // 收到解锁广播时，则启动计时service，开始计时            context.startService(new Intent(context, TimerService.class));        }    }}

package com.wei.androidtest.widgets;import java.io.UnsupportedEncodingException;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;import java.util.TimeZone;import java.util.Timer;import java.util.TimerTask;import com.wei.androidtest.R;import com.wei.androidtest.utils.Lunar;import android.app.PendingIntent;import android.app.Service;import android.appwidget.AppWidgetManager;import android.content.ComponentName;import android.content.Context;import android.content.Intent;import android.os.IBinder;import android.os.PowerManager;import android.util.Log;import android.widget.RemoteViews;/** * 更新时间的service * @author WEI * */public class TimerService extends Service{    Timer timer;    @Override    public IBinder onBind(Intent intent)     {        return null;    }    @Override    public void onCreate()     {        Log.e("service", "--- onCreate ---");        super.onCreate();        timer = new Timer();        timer.schedule(new TimerTask()         {            @Override            public void run() {                try {                    setCurrentTime();                } catch (UnsupportedEncodingException e) {                    e.printStackTrace();                }            }        }, 0, 1000);    }    // 设置当前时间    private void setCurrentTime() throws UnsupportedEncodingException     {//      Log.e("service", "--- setCurrentTime ---");        long timeMillis = System.currentTimeMillis();        String date = getDate(timeMillis);        Calendar c = Calendar.getInstance(TimeZone.getTimeZone("GMT+8"));        int hour = c.get(Calendar.HOUR_OF_DAY);        int minute = c.get(Calendar.MINUTE);        int second = c.get(Calendar.SECOND);        int weekDay = c.get(Calendar.DAY_OF_WEEK);        // 该类是为了获取当前农历日期，如不需要显示农历可不用        Lunar lunar = new Lunar(c);        String month = lunar.getCMonth();        String day = lunar.getCDate();        //获取Widgets管理器        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(getApplicationContext());        //widgetManager所操作的Widget对应的远程视图即当前Widget的layout文件        RemoteViews remoteViews = new RemoteViews(getPackageName(), R.layout.widget_layout);        remoteViews.setTextViewText(R.id.txt_currentTime, new StringBuilder()                .append(pad(hour)).append(":").append(pad(minute)));        remoteViews.setTextViewText(R.id.txt_second, pad(second));        remoteViews.setTextViewText(R.id.txt_date_1, date);        remoteViews.setTextViewText(R.id.txt_date_2, month + "月" + day);        remoteViews.setTextViewText(R.id.txt_week, parseWeekday(weekDay));        // 注册点击事件        Intent intent = new Intent("com.wei.test");        PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, intent, 0);         remoteViews.setOnClickPendingIntent(R.id.txt_currentTime, pendingIntent);        // 更新日历插件界面        ComponentName componentName = new ComponentName(getApplicationContext(), CalendarWidget.class);        appWidgetManager.updateAppWidget(componentName, remoteViews);        PowerManager mng = (PowerManager) getApplicationContext().getSystemService(Context.POWER_SERVICE);        if (mng.isScreenOn()) {//          Log.e("service", "--- 屏幕开 ---");        }        else         {            Log.e("service", "--- 屏幕关 ---");            Intent intent1 = new Intent("android.appwidget.action.SCREEN_OFF");            sendBroadcast(intent1);        }    }    @Override    public int onStartCommand(Intent intent, int flags, int startId)    {        Log.e("service", "--- onStartCommand ---" + flags + startId);        return super.onStartCommand(intent, flags, startId);    }    @Override    public void onDestroy()     {        Log.e("service", "--- onDestroy ---");        timer.cancel();        timer = null;        super.onDestroy();    }    public String pad(int c) {        if (c >= 10)            return String.valueOf(c);        else            return "0" + String.valueOf(c);    }    public String getDate(long time) throws UnsupportedEncodingException {        SimpleDateFormat format = new SimpleDateFormat("MM月dd日");        return format.format(new Date(time));    }    public String parseWeekday(int day) throws UnsupportedEncodingException {        String[] weekDays = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };        return weekDays[day - 1];    }}

在res目录下新建xml文件夹，并新建文件：widget_rovider.xml:

<?xml version="1.0" encoding="utf-8"?><appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"    android:minWidth="460dp"    android:minHeight="180dp"    android:updatePeriodMillis = "1000"    android:initialLayout="@layout/widget_layout"></appwidget-provider>

注：android:initialLayout指明日历插件要使用的布局，也就是插件要做成什么样子，皆由widget_layout.xml决定。

再在layout目录下新建布局文件：widget_layout.xml:

<?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:gravity="center"    android:orientation="vertical" >    <LinearLayout        android:layout_width="200dp"        android:layout_height="200dp"        android:layout_marginRight="20dp"        android:background="@android:color/transparent"        android:gravity="center"        android:orientation="vertical" >        <TextView            android:id="@+id/txt_currentTime"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_gravity="center_horizontal"            android:gravity="center"            android:text="13:50"            android:textColor="#dd434d"            android:textSize="50sp"            android:textStyle="bold" />        <TextView            android:id="@+id/txt_second"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_gravity="center_horizontal"            android:gravity="center"            android:text="50"            android:textColor="#dd434d"            android:textSize="20sp"            android:textStyle="bold" />        <LinearLayout            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:gravity="center"            android:orientation="vertical" >            <LinearLayout                android:layout_width="match_parent"                android:layout_height="wrap_content"                android:layout_gravity="center_vertical"                android:gravity="center"                android:orientation="vertical" >                <RelativeLayout                    android:layout_width="wrap_content"                    android:layout_height="wrap_content"                    android:layout_marginLeft="10dp"                    android:layout_marginRight="10dp" >                    <TextView                        android:id="@+id/txt_date_1"                        style="@style/Normal_Text"                        android:layout_width="wrap_content"                        android:layout_height="wrap_content"                        android:layout_centerVertical="true"                        android:padding="5dp"                        android:text="9月24日" />                    <TextView                        android:id="@+id/txt_week"                        style="@style/Normal_Text"                        android:layout_toRightOf="@id/txt_date_1"                        android:layout_marginLeft="10dp"                        android:layout_width="wrap_content"                        android:layout_height="wrap_content"                        android:layout_alignParentRight="true"                        android:layout_centerVertical="true"                        android:padding="5dp"                        android:text="星期四" />                </RelativeLayout>                <TextView                    android:id="@+id/txt_date_2"                    style="@style/Normal_Text"                    android:layout_width="match_parent"                    android:layout_height="wrap_content"                    android:layout_marginLeft="10dp"                    android:layout_marginRight="10dp"                    android:gravity="center_vertical"                    android:paddingLeft="5dp"                    android:text="八月十四" />            </LinearLayout>        </LinearLayout>    </LinearLayout></LinearLayout>

<application        android:persistent="true"        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <receiver android:name=".widgets.CalendarWidget"            android:label="@string/app_name"            android:icon="@drawable/bg_clock">            <intent-filter >                <action android:name="android.intent.action.BOOT_COMPLETED"/>                <action android:name="android.intent.action.PACKAGE_RESTARTED"/>                <action android:name="android.intent.action.USER_PRESENT"/> <!-- 解锁 -->                <action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>                <action android:name="android.appwidget.action.SCREEN_OFF"/>                <action android:name="com.wei.test"/>            </intent-filter>            <meta-data android:name="android.appwidget.provider"                android:resource="@xml/widget_provider"/>        </receiver>    </application>

若不想app被小米或360等一键清理给干掉，需配置android:persistent="true"并把apk放到system/app目录下，让我们的日历桌面插件成为系统应用，再重启手机。这样我们的桌面插件app就不会被第三方app给一键清理掉。