widget

创建

package d.m;

import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.widget.RemoteViews;

/**
 * @version 2012-8-7 上午09:50:18
 **/
public class wg extends AppWidgetProvider {

    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager,
            int[] appWidgetIds) {
        // 刷新界面
        Log.e("wg", "onUpdate");
        RemoteViews rv = new RemoteViews(context.getPackageName(),
                R.layout.widget_layout);
        Intent intent = new Intent("d.m.click");
        PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0,
                intent, 0);
        rv.setOnClickPendingIntent(R.id.ll1, pendingIntent);
        appWidgetManager.updateAppWidget(appWidgetIds[0], rv);

        // 启动Activity
        Intent intent2 = new Intent(context, mainActivity.class);
        PendingIntent pendingIntent2 = PendingIntent.getActivity(context, 0,
                intent2, 0);
        rv.setOnClickPendingIntent(R.id.btn1, pendingIntent2);
        appWidgetManager.updateAppWidget(appWidgetIds[0], rv);

        // 启动Service1
        Intent intent3 = new Intent("Service名");
        PendingIntent pendingIntent3 = PendingIntent.getService(context, 0,
                intent3, 0);
        rv.setOnClickPendingIntent(R.id.btn1, pendingIntent3);
        appWidgetManager.updateAppWidget(appWidgetIds[0], rv);
        // 启动Service2
        Intent intent4 = new Intent("Service名");
        context.startService(intent4);
        appWidgetManager.updateAppWidget(appWidgetIds[0], rv);
    }

    @Override
    public void onDeleted(Context context, int[] appWidgetIds) {
        // 销毁
        Log.e("wg", "onDeleted");
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        // 每次的动作都会有反应
        Log.e("wg", "onReceive");
        super.onReceive(context, intent);
        if(intent.getAction().equals("d.m.click")) {
        }
    }

    @Override
    public void onEnabled(Context context) {
        // 创建第一个
        super.onEnabled(context);
        Log.e("wg", "onEnabled");
    }

    @Override
    public void onDisabled(Context context) {
        // 销毁最后一个
        super.onDisabled(context);
        Log.e("wg", "onDisabled");
    }
}

wedget 的配置文件

<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:initialLayout="@layout/widget_layout"
	android:minWidth="146dip"
	android:minHeight="146dip"
	android:updatePeriodMillis="1800">
	<!-- android:initialLayout="@layout/widget_layout"加载布局文件 -->
	<!-- android:minWidth="146dip"宽度 -->
	<!-- android:minHeight="146dip"高度 -->
	<!-- 高度宽度的计算公式为 (块数*74)-2 -->
	<!-- android:configure="d.m.mainActivity" -->
	<!-- 是一个在Widget启动前先启动的Activity，方便用户对Widget的属性进行设置。 -->
	<!-- android:updatePeriodMillis="360000"更新(1.5后需要设置为30分钟以上的时间)单位毫秒 -->
</appwidget-provider> 

wedget在Manifest.xml中的配置

 <receiver
	android:label="@string/app_name"
        android:icon="@drawable/icon1"
	android:name=".wg"> 
        <!-- android:label="@string/hello"显示在小部件窗口名称 -->
        <!-- android:icon="@drawable/icon1"显示在小部件窗口图标 -->
	<intent-filter>
		<!-- 这个是必须有的 -->
		<action
			android:name="android.appwidget.action.APPWIDGET_UPDATE" />
		<!-- 对weiget的各种操作  -->
		<action
			android:name="d.m.click" />
	</intent-filter>
	<meta-data
		android:name="android.appwidget.provider"
		android:resource="@xml/widget" />
</receiver>

如果在wedget的配置文件中使用了android:configure="d.m.mainActivity"在wedget启动前调用Activity

package d.m;

import android.app.Activity;
import android.appwidget.AppWidgetManager;
import android.content.Intent;
import android.os.Bundle;

public class mainActivity extends Activity {
    int mAppWidgetId;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        // 如果返回RESULT_CANCELED，系统会认为配置失败，终止widget的创建过程。
        setResult(RESULT_CANCELED);

        // 获得widget的id
        Intent intent = getIntent();
        Bundle extras = intent.getExtras();
        if(extras != null) {
            mAppWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID,
                    AppWidgetManager.INVALID_APPWIDGET_ID);
        }

        // 返回的是无效的id
        if(mAppWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID) {
            finish();
        }

        // return OK
        Intent resultValue = new Intent();
        resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mAppWidgetId);

        setResult(RESULT_OK, resultValue);
        finish();
    }
}

Activity在Manifest.xml中的配置

<activity
	android:name=".mainActivity"
	android:label="@string/app_name">
	<intent-filter>
		<action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
		<!-- 如果在widget的属性中使用了android:configure,那么就必须添加intent-filter 值为AppWidgetManager.ACTION_APPWIDGET_DELETED -->
	</intent-filter>
</activity>