得到错误的WallpaperManager.ACTION_CHANGE_LIVE_WALLPAPER

问题描述

我创建通过以下我的拳头动态壁纸。但我发现了错误不能得到解决或不是一个字段这两行

I'm creating my fist Live wallpaper by following this tutorial. But i'm getting error can not be resolved or is not a field on these two lines

WallpaperManager.ACTION_CHANGE_LIVE_WALLPAPER
WallpaperManager.EXTRA_LIVE_WALLPAPER_COMPONENT

而努力才达到这个

Intent intent = new Intent( WallpaperManager.ACTION_CHANGE_LIVE_WALLPAPER);
intent.putExtra(WallpaperManager.EXTRA_LIVE_WALLPAPER_COMPONENT,
            new ComponentName(this, LiveWallService.class));

和编译器提供这些suggessions：

And compiler provides these suggessions:

WallpaperManager.ACTION_LIVE_WALLPAPER_CHOOSER
WallpaperManager.COMMAND_DROP
WallpaperManager.COMMAND_SECONDARY_TAP
WallpaperManager.COMMAND_TAP
WallpaperManager.WALLPAPER_PREVIEW_META_DATA

是什么东西错了...？

Is any thing wrong...?

推荐答案

WallpaperManager.ACTION_CHANGE_LIVE_WALLPAPER仅在API等级16（4.1.2）补充道。也许你已经设定目标SDK版本比16低的东西？

WallpaperManager.ACTION_CHANGE_LIVE_WALLPAPER was only added in API Level 16 (4.1.2). Perhaps you have set your target SDK version to something lower than 16?

低于API级别16，你只能发送用户使用意图的行动WallpaperManager.ACTION_LIVE_WALLPAPER_CHOOSER整体LWP选择屏幕，并告诉他从那里选择壁纸。你可以设置你的code以下列方式：

Below API level 16, you can only send the user to the overall LWP selection screen using intent action WallpaperManager.ACTION_LIVE_WALLPAPER_CHOOSER, and tell him to select your wallpaper from there. You could set up your code in the following way:

Intent i = new Intent();

if(Build.VERSION.SDK_INT >= 16)
{
    i.setAction(WallpaperManager.ACTION_CHANGE_LIVE_WALLPAPER);
    i.putExtra(WallpaperManager.EXTRA_LIVE_WALLPAPER_COMPONENT, new ComponentName(packageName, canonicalName));
}
else
{
    i.setAction(WallpaperManager.ACTION_LIVE_WALLPAPER_CHOOSER);
}

// send intent

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