如何通过代码随意修改锁屏图片?

可以参考官方文档：https://developer.harmonyos.com/cn/docs/documentation/doc-references/js-apis-wallpaper-0000001154665636#section1935265231117

import image from '@ohos.multimedia.image';

let wallpaperPath = "/data/data/ohos.acts.aafwk.plrdtest.form/files/Cup_ic.jpg";

wallpaper.setWallpaper(wallpaperPath, wallpaper.WALLPAPER_SYSTEM, (error, data) => {

if (error) {

console.error(`WallpaperPlugin failed to setWallpaper because: ` + JSON.stringify(error));

return;

}

console.log(`WallpaperPlugin success to setWallpaper: ` + JSON.stringify(data));

});

let imageSource = image.createImageSource("file://" +wallpaperPath);

let defaultSize = {

"height": 3648,

"width": 2736

};

let opts = {

"desiredSize": defaultSize

};

imageSource.createPixelMap(opts).then((pixelMap) => {

console.info("WallpaperPlugin pixelMap: " + JSON.stringify(pixelMap));

wallpaper.setWallpaper(pixelMap, wallpaper.WALLPAPER_SYSTEM, (error, data) => {

if (error) {

console.error(`WallpaperPlugin failed to setWallpaper because: ` + JSON.stringify(error));

return;

}

console.log(`WallpaperPlugin success to setWallpaper: ` + JSON.stringify(data));});

}).catch((error) => {

console.error(`WallpaperPlugin failed to setWallpaper pixelMap because: ` + JSON.stringify(error));});