Question

我正在处理我的应用程序中的反馈功能，用户应该从库中选择一个图像并输入他的消息并按发送，在发送按钮上单击代码应该从框中获取文本（如下图所示并将其附加到电子邮件意图并发送整个内容，一切似乎都正常工作，直到我得到＆＃34;无法附加空文件＆＃34;吐司消息，这是我在代码中获得了多远

 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()

中

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：如果您仍无法分享

，请添加此标记

email.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)

Answer 2

试试这种方式。

 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 - 将图像附加到电子邮件

2 个答案: