Android动态壁纸的制作教程.docxVIP

动态壁纸是在Android 2.1新增的一个功能。动态壁纸可以添加到Android的桌面，具有交互式的动画背景效果。在本教程中，我们将教会你如何去制作一个交互式的动态壁纸。动态壁纸是一个Android应用程序，包括一个服务(WallpaperService)。该服务必须包括一个引擎(WallpaperService.Engine)。该引擎是连接用户、桌面、系统之间的桥梁。它也可以绘制桌面壁纸。首先，必须由内在的Engine类创建一个WallpaperService类。该服务必须在AndroidManifest.xml中声明为android.service.wallpaper.WallpaperService，这样它才会作为动态壁纸被手机识别。而且还要在服务配置中附加android.permission.BIND_WALLPAPER的权限许可：??12345678910111213service????android:name=LiveWallpaperService????android:enabled=true????android:icon=@drawable/icon????android:label=@string/app_name????android:permission=android.permission.BIND_WALLPAPER????intent-filterandroid:priority=1????????actionandroid:name=android.service.wallpaper.WallpaperService/????/intent-filter????meta-data??????android:name=android.service.wallpaper??????android:resource=@xml/wallpaper//service创建一个XML文件，放置在应用程序目录下的/res/xml/中。它用来描述你的动态壁纸。??123456?xmlversion=1.0encoding=UTF-8?wallpaper????xmlns:android=/apk/res/android?????android:thumbnail=@drawable/thumbnail????android:description=@string/description????android:settingsActivity=PreferenceActivity/再创建一个xml的属性文件?attrs.xml?，代码如下：??1234567891011121314declare-styleablename=Wallpaper????!-- Component name of an activity that allows the user to modify?????????the current settings for this wallpaper. --????attrname=settingsActivity/??????!-- Reference to a the wallpapers thumbnail bitmap. --????attrname=thumbnailformat=reference/??????!-- Name of the author of this component, e.g. Google. --????attrname=authorformat=reference/??????!-- Short description of the components purpose or behavior. --????attrname=description//declare-styleable动态壁纸的服务代码如下：??123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105packagenet.androgames.blog.sample.livewallpaper;??importandroid.content.SharedPreferences;importandroid.service.wallpaper.WallpaperService;importandroid.view.MotionEvent