Android：如何使用 grantUriPermission 创建和发送带有位图附件的电子邮件

在我的应用程序中，我正在尝试创建一个包含位图对象中包含的图像的电子邮件。

private void sendEmailWithBitmapAttached(){ 

    final Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
    emailIntent.setType("plain/text");
    emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Email Subject");
    emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, "Email Body");
    emailIntent.setType("image/png");
    ContentResolver cr = getContentResolver();

    // insert the image and create a path
    String imageBitmapPath = MediaStore.Images.Media.insertImage(cr, bitmapForEmail,"title", "description");

    // create a uri
    Uri imageUri = Uri.parse(imageBitmapPath);
    emailIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    emailIntent.putExtra(Intent.EXTRA_STREAM, imageUri);

    // send the email
    startActivity(Intent.createChooser(emailIntent, "Send mail..."));
}

这在Android 2.3中工作正常。

但是使用更高版本，它会产生以下错误：

07-13 23:01:01.252: E/MediaStore(5194): Failed to insert image
 07-13 23:01:01.252: E/MediaStore(5194): java.lang.SecurityException: 
     Permission Denial: 
         writing com.android.providers.media.MediaProvider 
         uri content://media/external/images/media from 
             pid=5194, uid=10151 requires 
             android.permission.WRITE_EXTERNAL_STORAGE, 
             or grantUriPermission()

因此，根据错误消息的建议，我试图授予UriPermission。

grantUriPermission(String toPackage, Uri uri, int modeFlags)

但我不确定该放什么给Package或uri

但是，再次使用错误消息，我修改了代码，如下所示：

private void sendEmailWithBitmapAttached(){ 

    final Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
    emailIntent.setType("plain/text");
    emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Email Subject");
    emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, "Email Body");
    emailIntent.setType("image/png");
    ContentResolver cr = getContentResolver();

    // create a Uri for the content provider suggested by the error message
    Uri uri = Uri.parse("content://media/external/images/media");

    // create a package provider string suggested by the error messge.
    String provider = "com.android.providers.media.MediaProvider";


    // grant all three uri permissions!
    grantUriPermission(provider, uri, Intent.FLAG_GRANT_READ_URI_PERMISSION);
    grantUriPermission(provider, uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
    grantUriPermission(provider, uri, Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION);

    // insert the image and create a path
    String imageBitmapPath = MediaStore.Images.Media.insertImage(cr, bitmapForEmail,"title", "description");

    // create a uri
    Uri imageUri = Uri.parse(imageBitmapPath);
    emailIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    emailIntent.putExtra(Intent.EXTRA_STREAM, imageUri);

    // send the email
    startActivity(Intent.createChooser(emailIntent, "Send mail..."));
}

我得到了完全相同的错误。

一个善良的灵魂能否给我一个提示，说明如何照顾grantUriPermission的uri和提供者物品？这是正确的方法吗？

非常感谢您的任何帮助，提示，指南或建议，你可以提供！