如何將圖像發送到畫廊以設置壁紙？

Question

我正在嘗試使用默認圖庫應用程序集成設置爲壁紙選項，我不知道如何使用意圖將圖像發送到圖庫。我附上fb應用程序示例，它的外觀如何。

String root = Environment.getExternalStorageDirectory().toString(); 
        new File(root + "/"+Constants1.APPNAME).mkdirs(); 


        File fileForImage = new File(root + "/"+Constants1.APPNAME, pos + ".jpg"); 
        if (fileForImage.exists()) fileForImage.delete(); 
        try { 
         FileOutputStream out = new FileOutputStream(fileForImage); 
         arg0.compress(Bitmap.CompressFormat.PNG, 100, out); 
         Toast.makeText(getApplicationContext(), "Image is saved to "+Constants1.APPNAME+" folder", Toast.LENGTH_SHORT).show(); 
         out.flush(); 
         out.close(); 

        } catch (Exception e) { 
         e.printStackTrace(); 
        } 
        Intent emailIntent = new Intent(Intent.ACTION_ATTACH); 
        emailIntent.setType("image/png"); 
        emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(fileForImage)); 
        startActivityForResult(Intent.createChooser(emailIntent, pos+".jpg"),0); 

的問題是圖像不傳遞給畫廊..

Answer 1

 Intent emailIntent = new Intent(Intent.ACTION_ATTACH_DATA); 
         emailIntent.setDataAndType(Uri.fromFile(fileForImage), "image/*"); 
         //emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(fileForImage)); 
         startActivity(emailIntent); 
         Toast.makeText(getApplicationContext(), "Image is saved to "+Constants1.APPNAME+" folder", Toast.LENGTH_SHORT).show();