Android - 如何设置壁纸图像
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Android - how to set the wallpaper image
提问by James Cadd
Is it possible to set the android wallpaper image programatically? I'd like to create a service that downloads an image from the web and updates the home screen wallpaper periodically.
是否可以以编程方式设置 android 壁纸图像？我想创建一个从网络下载图像并定期更新主屏幕墙纸的服务。
采纳答案by ChrisF
From this pageon the developer site:
从开发者网站上的这个页面：
public void setStream (InputStream data)
Change the current system wallpaper to a specific byte stream. The give InputStream is copied into persistent storage and will now be used as the wallpaper. Currently it must be either a JPEG or PNG image.
将当前系统壁纸更改为特定字节流。给定的 InputStream 被复制到持久存储中，现在将用作墙纸。目前它必须是 JPEG 或 PNG 图像。
回答by Kishore
If you have image URL then use
如果您有图片网址，请使用
WallpaperManager wpm = WallpaperManager.getInstance(context);
InputStream ins = new URL("absolute/path/of/image").openStream();
wpm.setStream(ins);
If you have image URI then use
如果您有图像 URI，则使用
WallpaperManager wpm = WallpaperManager.getInstance(context);
wpm.setResource(Uri.of.image);
In your manifest file:
在您的清单文件中：
<uses-permission android:name="android.permission.SET_WALLPAPER"></uses-permission>
回答by djk
If you have bitmap of image than you will add this function to set as wallpaper:
如果您有图像位图，则将添加此功能以设置为墙纸：
public void SetBackground(int Url) {
try {
File file = new File("/sdcard/sampleimage");
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), Url);
bitmap.compress(CompressFormat.JPEG, 80, new FileOutputStream(file));
Context context = this.getBaseContext();
context.setWallpaper(bitmap);
Toast.makeText(getApplicationContext(), "Wallpaper has been set", Toast.LENGTH_SHORT).show();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
you should add permission for this
你应该为此添加权限
<uses-permission android:name="android.permission.SET_WALLPAPER"></uses-permission>
hope it will work
希望它会起作用
回答by Jonah
OK Here's how to do it before api 2.0:
OK 下面是 api 2.0 之前的做法：
You need to call getApplicationContext.setWallpaper() and pass it the bitmap.
您需要调用 getApplicationContext.setWallpaper() 并将位图传递给它。
This method is now deprecated. See ChrisF's answer for details on the new method.
此方法现已弃用。有关新方法的详细信息，请参阅 ChrisF 的回答。
