我有一个HTML字符串，我想将其作为文件附加到邮件中。我可以将此字符串保存到文件中并附加它，但是我不想将其保存到文件中。我认为应该有可能，但我不知道该怎么做。这是我的代码：
String html = "<html><body><b><bold</b><u>underline</u></body></html>";
Intent intent = new Intent(Intent.ACTION_SEND, Uri.parse("mailto:"));
intent.setType("text/html");
intent.putExtra(Intent.EXTRA_SUBJECT, "Subject");
intent.putExtra(Intent.EXTRA_TEXT, Html.fromHtml(html));
// this is where I want to create attachment
intent.putExtra(Intent.EXTRA_STREAM, Html.fromHtml(html));
startActivity(Intent.createChooser(intent, "Send Email"));
如何将字符串作为文件附加到邮件？
此代码使您无需添加清单使用权限即可读取外部SD卡。它在您的应用程序专用目录的文件目录中创建一个临时文件，然后使用字符串的内容创建该文件并允许读取权限，以便可以对其进行访问。
String phoneDesc = "content string to send as attachment";
FileOutputStream fos = null;
try {
fos = openFileOutput("tempFile", Context.MODE_WORLD_READABLE);
fos.write(phoneDesc.getBytes(),0,phoneDesc.getBytes().length);
fos.flush();
fos.close();
} catch (IOException ioe) {
ioe.printStackTrace();
}
finally {
if (fos != null)try {fos.close();} catch (IOException ie) {ie.printStackTrace();}
}
File tempFBDataFile = new File(getFilesDir(),"tempFile");
Intent emailClient = new Intent(Intent.ACTION_SENDTO, Uri.parse("[email protected]"));
emailClient.putExtra(Intent.EXTRA_SUBJECT, "Sample Subject";
emailClient.putExtra(Intent.EXTRA_TEXT, "Sample mail body content");
emailClient.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(tempFBDataFile));//attachment
Intent emailChooser = Intent.createChooser(emailClient, "select email client");
startActivity(emailChooser);
只要您不再需要该文件，就应该调用它。
File tempData = new File(getFilesDir(),"tempFile");
if (tempData.exists()) {
tempData.delete();
}
String pathname= Environment.getExternalStorageDirectory().getAbsolutePath();
String filename="/MyFiles/mysdfile.txt";
File file=new File(pathname, filename);
Intent i = new Intent(Intent.ACTION_SEND);
i.putExtra(Intent.EXTRA_SUBJECT, "Title");
i.putExtra(Intent.EXTRA_TEXT, "Content");
i.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
i.setType("text/plain");
startActivity(Intent.createChooser(i, "Your email id"));
Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
emailIntent.setType("png/image");
emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, new String[] {
"mail--id" });
emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, subject);
emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, message);
Uri uri = Uri.fromFile(new File(Environment
.getExternalStorageDirectory(), "/saved_images/MyImage.png"));
emailIntent.putExtra(Intent.EXTRA_STREAM, uri);
emailIntent.setType("text/plain");
startActivity(emailIntent);
并且不要忘记在清单文件中的权限下面添加此。
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_INTERNAL_STORAGE" /