Android应用实例之（二）----->Android Widget开发案例（worldcup）-优快云博客

今天我们要写一下Android Widget的开发，由于时间关系，同志们就模仿吧！首先看一下效果图:

下面是Demo的详细步骤:

一、新建一个Android工程命名为:WidgetDemo.

二、准备素材，一个是Widget的图标，一个是Widget的背景。存放目录如下图:

三、修改string.xml文件如下:

<?xmlversion="1.0"encoding="utf-8"?>
<resources>
<stringname="hello">HelloWorld,WidgetDemo!</string>
<stringname="app_name">WorldCup</string>
</resources>

四、建立Widget内容提供者文件，我们在res下建立xml文件夹，并且新建一个example_appwidget_info.xml代码入下:

<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android" android:minWidth="294dp" android:minHeight="72dp" android:updatePeriodMillis="86400000" android:initialLayout="@layout/example_appwidget" > </appwidget-provider>

五、修改main.xml布局，代码如下:

view plain

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"

>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
</LinearLayout>

六、修改WidgetDemo.java代码如下:

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import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.content.Intent;
import android.widget.RemoteViews;
public class appWidgetProvider extends AppWidgetProvider{
@Override
public void onDeleted(Context context, int[] appWidgetIds) {
// TODO Auto-generated method stub
super.onDeleted(context, appWidgetIds);
}

@Override
public void onDisabled(Context context) {
// TODO Auto-generated method stub
super.onDisabled(context);
}

@Override
public void onEnabled(Context context) {
// TODO Auto-generated method stub
super.onEnabled(context);
}

@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
super.onReceive(context, intent);
}
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
for(int i = 0;i < appWidgetIds.length;i++){
System.out.println(appWidgetIds[i]);
Intent intent = new Intent(context,TargetActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.example_appwidget);
remoteViews.setOnClickPendingIntent(R.id.widgetButtonId, pendingIntent);
appWidgetManager.updateAppWidget(appWidgetIds[i], remoteViews);

}

super.onUpdate(context, appWidgetManager, appWidgetIds);
}
}

七、修改配置文件AndroidManifest.xml，代码如下:

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<?xmlversion="1.0"encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.peter.test"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="10" />

<application android:icon="@drawable/worldcup" android:label="@string/app_name">
<activity android:name=".MainActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".TargetActivity"></activity>
<receiver android:name=".appWidgetProvider">
<intent-filter >
<action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="@xml/example_appwidget_info"
/>
</receiver>
</application>
</manifest>