如何將圖像下載到設備上以便將它們設置爲壁紙

Question

有沒有一種方法可以在Android上下載圖像並在圖像下載後在設備上找到它們將設置爲新壁紙按鈕。

幫助將不勝感激！

Answer 1

ImageRequest imgRequest = new ImageRequest(url, new Response.Listener<Bitmap>() { 
    @Override 
    public void onResponse(Bitmap _bitmapScaled) { 

     ByteArrayOutputStream bytes = new ByteArrayOutputStream(); 
     _bitmapScaled.compress(Bitmap.CompressFormat.JPEG, 40, bytes); 

     //you can create a new file name "test.jpg" in sdcard folder. 
     File f = new File(Environment.getExternalStorageDirectory() 
           + File.separator + "test.jpg") 
     f.createNewFile(); 
     //write the bytes in file 
     FileOutputStream fo = new FileOutputStream(f); 
     fo.write(bytes.toByteArray()); 

     // remember close de FileOutput 
     fo.close(); 


    } 
    }, 0, 0, ImageView.ScaleType.CENTER_CROP, Bitmap.Config.ARGB_8888, 
    new Response.ErrorListener() { 
    @Override 
    public void onErrorResponse(VolleyError error) { 
     //do stuff 
    } 
});