Android

Question

我正在开发我的应用程序中的反馈功能，用户应该 select 图片库中的图像并键入他的消息并按发送，在发送按钮上单击代码应该得到框中的文本（下图）并将其附加到电子邮件意图并发送整个内容，一切似乎都正常，直到我收到 "can't attach empty file" toast 消息，这就是我在代码中的进展

 String rating = String.valueOf(RateBar.getRating());
            String subject = Feedback.getText().toString();
            String FileLocation = FilePathPreview.getText().toString();
            String to ="EngNor.supp@gmail.com";
            String message = UserInput.getText().toString();
            String body = "Rating : "+rating+" out of 5"+
                    "\n "+message;
            Intent email = new Intent(Intent.ACTION_SEND);
            email.putExtra(Intent.EXTRA_EMAIL, new String[]{to});
            email.putExtra(Intent.EXTRA_SUBJECT, subject);
            email.putExtra(Intent.EXTRA_TEXT, body);
            email.putExtra(Intent.EXTRA_STREAM, Uri.parse("file:/"+FileLocation));

            //need this to prompts email client only
            email.setType("message/rfc822");

            startActivity(Intent.createChooser(email, "Choose an Email client :"));

public void grabImg(){
    Intent intent = new Intent();
    intent.setType("image/*");
    intent.setAction(Intent.ACTION_GET_CONTENT);
    startActivityForResult(Intent.createChooser(intent,
            "Select Picture"), SELECT_PICTURE);
}
protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent) {
    super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
        if(resultCode == RESULT_OK){
            Uri selectedImage = imageReturnedIntent.getData();
            String PathP = selectedImage.getPath().toString();
            FilePathPreview.setText(PathP);
        }
}

Answer 1

创建一个全局 Uri 变量然后将 uri 保存在 onActivityResult()

Uri uri = null;

protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent) {
    super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
        if(resultCode == RESULT_OK){
            Uri selectedImage = imageReturnedIntent.getData();
            uri  = selectedImage; // here set the uri 
            String PathP = selectedImage.getPath().toString();
            FilePathPreview.setText(PathP);
        }
}

然后将相同的 uri 变量传递给

        //....
        email.putExtra(Intent.EXTRA_STREAM, uri);
        //....
        //need this to prompts email client only
        email.setType("message/rfc822");

        startActivity(Intent.createChooser(email, "Choose an Email client :"));

更新：如果还是不能分享就加这个flag

email.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)

Answer 2

试试这个方法。

 Uri selectedImageUri = data.getData();
 String PathP;
 Cursor cursor = getContentResolver().query(selectedImageUri, null, null, null, null);
 if(cursor != null)
 {
     cursor.moveToFirst(); 
     int idx =cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
     PathP = cursor.getString(idx);
     cursor.close();
 }

Android - 将图像附加到 E-mail

Android - Attach image to E-mail

java

email

android-intent

email-attachments