任何人都可以请提供我如何保存图像从一个网络服务器，并将其设置为墙纸的一些想法/指导？我在开发的需要做了一个Android应用程序，我新的机器人。非常感谢。

我曾试图写我自己的code，但它不工作，我不能下载后发现我的图片，但墙纸已经改变下载的图片。这里是我现有的code。

 位图bmImg;

无效downloadFile（字符串fileUrl）{
    URL myFileUrl = NULL;
    尝试 {
        myFileUrl =新的URL（fileUrl）;
    }赶上（MalformedURLException异常E）{
        // TODO自动生成的catch块
        e.printStackTrace（）;
    }
    尝试 {
        HttpURLConnection的康恩=（HttpURLConnection类）myFileUrl
                .openConnection（）;
        conn.setDoInput（真正的）;
        conn.connect（）;
        INT长度= conn.getContentLength（）;

        InputStream的是= conn.getInputStream（）;

        bmImg = BitmapFactory.de codeStream（是）;
        // this.imView.setImageBitmap（bmImg）;
    }赶上（IOException异常E）{
        // TODO自动生成的catch块
        e.printStackTrace（）;
    }
    尝试 {
        字符串的文件路径= Environment.getExternalStorageDirectory（）getAbsolutePath（）。
        的FileOutputStream fos基因=新的FileOutputStream（文件路径+/+output.jpg）;
        bmImg.com preSS（比较pressFormat.JPEG，75，FOS）;
        fos.flush（）;
        fos.close（）;

        上下文的背景下= this.getBaseContext（）;
        context.setWallpaper（bmImg）;
    }赶上（例外五）{
        //Log.e("MyLog，e.toString（））;
        TextView的电视=（TextView中）findViewById（R.id.txt_name）;
        tv.setText（e.toString（））;
    }

}
 

解决方案   

我曾试图写我自己的code，但它   不工作，因为我无法找到我的图片   下载后。这里是我现有的   code。

您code将保存在数据/数据​​/＆LT形象; your_app_package_name＆gt;在手机文件夹。然后，您可以使用一个 WallpaperManager实例 或做 context.setWallpaper（位图）（这是德precated）设置你的位图作为壁纸。

Can anyone please provide me some idea/guidance on how to save an image from a webserver and set it as wallpaper? i am developing an android application which needs to do that and i am new in android. Thanks a lot.

I had tried writing my own code but it doesn't work as i can't find my images after download but the wallpaper has change to the downloaded picture. here is my existing code.

Bitmap bmImg;

void downloadFile(String fileUrl) {
    URL myFileUrl = null;
    try {
        myFileUrl = new URL(fileUrl);
    } catch (MalformedURLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    try {
        HttpURLConnection conn = (HttpURLConnection) myFileUrl
                .openConnection();
        conn.setDoInput(true);
        conn.connect();
        int length = conn.getContentLength();

        InputStream is = conn.getInputStream();

        bmImg = BitmapFactory.decodeStream(is);
        // this.imView.setImageBitmap(bmImg);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    try {
        String filepath=Environment.getExternalStorageDirectory().getAbsolutePath(); 
        FileOutputStream fos = new FileOutputStream(filepath + "/" + "output.jpg"); 
        bmImg.compress(CompressFormat.JPEG, 75, fos);
        fos.flush();
        fos.close();

        Context context = this.getBaseContext();
        context.setWallpaper(bmImg);
    } catch (Exception e) {
        //Log.e("MyLog", e.toString());
        TextView tv = (TextView) findViewById(R.id.txt_name);
        tv.setText(e.toString());
    }

}

I had tried writing my own code but it doesn't work as i can't find my images after download. here is my existing code.

Your code would save the image in the data/data/<your_app_package_name> folder of the phone. You can then use either a WallpaperManager instance or do a context.setWallpaper(bitmap)(this is deprecated) to set your bitmap as the wallpaper.