我在发送带附件的邮件时遇到问题。我正在使用 Javamail 库(mail.jar、activitation.jar 和 additional.jar)。我可以准确地发送邮件。但是我不能发送带有附件的邮件是图像到邮件。我从图库中选择一张图片，并将其添加为我的文件名
File f = new File("file://" + uri.getPath());
当数据源采用我的文件路径时，我认为我遇到了问题。不管你能在我的代码中看到更多的东西:(我已经解决了这个问题，这是我代码的最后一种情况)
首先我添加到我的附件 View :
Button Add = (Button) findViewById(R.id.btnAdd);
Add.setOnClickListener(new Button.OnClickListener() {
public void onClick(View view) {
onAddAttachment2("image/*");
}
});
这是我的 onAddAttachment2 和 onActivityResult 代码
private void onAddAttachment2(final String mime_type) {
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType(mime_type);
startActivityForResult(Intent.createChooser(i, null),
ACTIVITY_REQUEST_PICK_ATTACHMENT);
}
protected void onActivityResult(int requestCode, int resultCode,
Intent imageReturnedIntent) {
super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
mAttachments = (LinearLayout) findViewById(R.id.attachments);
switch (requestCode) {
case ACTIVITY_REQUEST_PICK_ATTACHMENT:
Uri _uri = imageReturnedIntent.getData();
addAttachment(_uri);
Cursor cursor = getContentResolver()
.query(_uri,
new String[] { android.provider.MediaStore.Images.ImageColumns.DATA },
null, null, null);
cursor.moveToFirst();
String imageFilePath = cursor.getString(0);
uris.add(imageFilePath);
Log.v("imageFilePath", imageFilePath);
break;
}
}
如您所见，我有一个 AddAttachment 方法。这是代码:
private void addAttachment(Uri uri) {
addAttachment(uri, null);
}
private void addAttachment(Uri uri, String contentType) {
long size = -1;
String name = null;
ContentResolver contentResolver = getContentResolver();
Cursor metadataCursor = contentResolver.query(uri, new String[] {
OpenableColumns.DISPLAY_NAME, OpenableColumns.SIZE }, null,
null, null);
if (metadataCursor != null) {
try {
if (metadataCursor.moveToFirst()) {
name = metadataCursor.getString(0);
size = metadataCursor.getInt(1);
}
} finally {
metadataCursor.close();
}
}
if (name == null) {
name = uri.getLastPathSegment();
}
String usableContentType = contentType;
if ((usableContentType == null)
|| (usableContentType.indexOf('*') != -1)) {
usableContentType = contentResolver.getType(uri);
}
if (usableContentType == null) {
usableContentType = getMimeTypeByExtension(name);
}
if (size <= 0) {
String uriString = uri.toString();
if (uriString.startsWith("file://")) {
Log.v(LOG_TAG, uriString.substring("file://".length()));
File f = new File(uriString.substring("file://".length()));
size = f.length();
} else {
Log.v(LOG_TAG, "Not a file: " + uriString);
}
} else {
Log.v(LOG_TAG, "old attachment.size: " + size);
}
Log.v(LOG_TAG, "new attachment.size: " + size);
Attachment attachment = new Attachment();
attachment.uri = uri;
attachment.contentType = usableContentType;
attachment.name = name;
attachment.size = size;
View view = getLayoutInflater().inflate(
R.layout.message_compose_attachment, mAttachments, false);
TextView nameView = (TextView) view.findViewById(R.id.attachment_name);
ImageButton delete = (ImageButton) view
.findViewById(R.id.attachment_delete);
nameView.setText(attachment.name);
delete.setTag(view);
view.setTag(attachment);
mAttachments.addView(view);
delete.setOnClickListener(new Button.OnClickListener() {
public void onClick(View view) {
uris.remove(view.getTag());
mAttachments.removeView((View) view.getTag());
}
});
}
和具有属性的附件类
static class Attachment implements Serializable {
private static final long serialVersionUID = 3642382876618963734L;
public String name;
public String contentType;
public long size;
public Uri uri;
}
最后在我的 Mail.java 类中我有 AddAttachment 方法:
public void addAttachment(String file) throws Exception {
BodyPart messageBodyPart = new MimeBodyPart();
FileDataSource source = new FileDataSource(file);
messageBodyPart.setDataHandler(new DataHandler(source));
messageBodyPart.setFileName(file);
_multipart.addBodyPart(messageBodyPart);
}
当我点击发送按钮时，它已经被写入了发送地址。 但是我的附件无法显示。我发送邮件时没有错误。我希望你有解决这些问题的方法......
编辑: 好的，我终于解决了这个问题!...
首先我定义了ArrayList<String> uris = new ArrayList<String>();
然后我在我的 onActivityResult 方法中像那样使用它 uris.add(imageFilePath);
最后，在 m.send 之前我添加图像的代码块:
for (int i = 0; i<uris.size(); i++)
{
m.addAttachment(uris.get(i).toString());
}
在我的 Mail.java 类中，更改如下所示:
public void addAttachment(String file) throws Exception {
BodyPart messageBodyPart = new MimeBodyPart();
FileDataSource source = new FileDataSource(file);
messageBodyPart.setDataHandler(new DataHandler(source));
messageBodyPart.setFileName(file);
_multipart.addBodyPart(messageBodyPart);
}
最佳答案
肯定是MIME Type的问题。如果你想用电子邮件附加图片，你可以简单地使用
private void sendEmail(String[] to,String[] cc,String subject, String message)
{
ArrayList<Uri> uris = new ArrayList<Uri>();
Uri u = Uri.fromFile(new File(front_image));
Uri u1 = Uri.fromFile(new File(side_image));
uris.add(u);
uris.add(u1);
Intent emailIntent = new Intent(Intent.ACTION_SEND_MULTIPLE);
emailIntent.setData(Uri.parse("mailto:"));
emailIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
emailIntent.setType("image/jpg");
emailIntent.putExtra(Intent.EXTRA_EMAIL, to);
emailIntent.putExtra(Intent.EXTRA_CC, cc);
emailIntent.putExtra(Intent.EXTRA_SUBJECT, subject);
emailIntent.putExtra(Intent.EXTRA_TEXT, message);
emailIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris);
/*emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://" + show_right_latest_path));
emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://" + show_right_prev_path));
emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://" + show_front_latest_path));
emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://" + show_front_prev_path));*/
startActivity(Intent.createChooser(emailIntent, "Email"));
}
关于android - 无法在 Android 中发送带附件的邮件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/10396214/