HarmonyOS 鸿蒙Next学习笔记——设置桌面/锁屏壁纸
HarmonyOS 鸿蒙Next学习笔记——设置桌面/锁屏壁纸
1、常用接口
wallpaperType：壁纸类型
2、权限
允许程序设置静态壁纸
ohos.permission.SET_WALLPAPER
允许程序通过指定显示大小或边距来设置壁纸大小
ohos.permission.SET_WALLPAPER_DIMENSION
3、开发步骤
在config.json中添加权限
"reqPermissions": [
{
"name": "ohos.permission.SET_WALLPAPER"
}
]ability_main.xml
<?xml version="1.0" encoding="utf-8"?>
<DirectionalLayout
xmlns:ohos="http://schemas.huawei.com/res/ohos"
ohos:height="match_parent"
ohos:width="match_parent"
ohos:alignment="center"
ohos:orientation="vertical">
<Button
ohos:id="$+id:btn_set_wallpaper"
ohos:height="match_content"
ohos:width="match_content"
ohos:background_element="$graphic:background_ability_main"
ohos:layout_alignment="horizontal_center"
ohos:text="设置桌面壁纸"
ohos:text_size="40vp"/>
<Button
ohos:id="$+id:btn_reset_wallpaper"
ohos:height="match_content"
ohos:width="match_content"
ohos:background_element="$graphic:background_ability_main"
ohos:layout_alignment="horizontal_center"
ohos:text="恢复桌面壁纸"
ohos:text_size="40vp"/>
<Button
ohos:id="$+id:btn_set_lock_wallpaper"
ohos:height="match_content"
ohos:width="match_content"
ohos:background_element="$graphic:background_ability_main"
ohos:layout_alignment="horizontal_center"
ohos:text="设置锁屏壁纸"
ohos:text_size="40vp"/>
<Button
ohos:id="$+id:btn_reset_lock_wallpaper"
ohos:height="match_content"
ohos:width="match_content"
ohos:background_element="$graphic:background_ability_main"
ohos:layout_alignment="horizontal_center"
ohos:text="恢复锁屏壁纸"
ohos:text_size="40vp"/>
</DirectionalLayout>效果如下：
设置桌面壁纸
恢复桌面壁纸
设置锁屏壁纸
恢复锁屏壁纸没有成功，不知道是为什么
HarmonyOS 鸿蒙Next中，设置桌面和锁屏壁纸可以通过系统提供的API实现。开发者可以使用ohos.wallpaper模块中的WallpaperManager类来管理壁纸。具体步骤如下：
-
获取WallpaperManager实例： 使用
WallpaperManager.getInstance(context)获取WallpaperManager的实例。 -
设置桌面壁纸： 调用
setWallpaper(uri, wallpaperType)方法，其中uri为壁纸资源的URI，wallpaperType设置为WallpaperManager.WALLPAPER_SYSTEM。 -
设置锁屏壁纸： 同样调用
setWallpaper(uri, wallpaperType)方法，但wallpaperType设置为WallpaperManager.WALLPAPER_LOCKSCREEN。 -
获取当前壁纸： 使用
getWallpaper(wallpaperType)方法可以获取当前设置的桌面或锁屏壁纸。
示例代码：
import wallpaper from '@ohos.wallpaper';
let context = ... // 获取上下文
let wallpaperManager = wallpaper.getWallpaperManager(context);
// 设置桌面壁纸
let systemWallpaperUri = ... // 桌面壁纸URI
wallpaperManager.setWallpaper(systemWallpaperUri, wallpaper.WallpaperType.WALLPAPER_SYSTEM);
// 设置锁屏壁纸
let lockScreenWallpaperUri = ... // 锁屏壁纸URI
wallpaperManager.setWallpaper(lockScreenWallpaperUri, wallpaper.WallpaperType.WALLPAPER_LOCKSCREEN);
// 获取当前桌面壁纸
let currentSystemWallpaper = wallpaperManager.getWallpaper(wallpaper.WallpaperType.WALLPAPER_SYSTEM);
// 获取当前锁屏壁纸
let currentLockScreenWallpaper = wallpaperManager.getWallpaper(wallpaper.WallpaperType.WALLPAPER_LOCKSCREEN);以上代码展示了如何在HarmonyOS 鸿蒙Next中设置和获取桌面及锁屏壁纸。
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