发送后删除文件android studio

如何解决发送后删除文件android studio

文件发送正常，但如何在发送后删除它，deleteOnExit() 不t work. Maybe I should save it in cache but when I我试图这样做（使用 getCacheDir()）文件不发送 任何帮助将不胜感激

                String  fileName_Kon;
             fileName_Kon = ((EditText) popupWindow.getContentView().findViewById(R.id.userInputNameForFile)).getText().toString() + ((TextView) popupWindow.getContentView().findViewById(R.id.dateNameFile)).getText().toString();

                   File sharedir = new File(getFilesDir(),"files");
                if (!sharedir.exists()) sharedir.mkdir();
                String shareName = new String(fileName_Kon);


               try {
                   File shareFile =   File.createTempFile(shareName,".txt",sharedir);
               } catch (IOException e) {
                   e.printstacktrace();
               }
//shareFile.deleteOnExit();
               try {
                    FileOutputStream flogs = new FileOutputStream(shareFile);
                   
                        flogs.write("text").getBytes());
                    
                    flogs.flush();
                    flogs.close();
                } catch (IOException e) {
                    e.printstacktrace();
                }
                final Intent emailIntent = new Intent(Intent.ACTION_SEND_MULTIPLE);
                emailIntent.setType("message/rfc822");
          
              emailIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                Uri contentUri = FileProvider.getUriForFile(MainActivity.this,AUTHORITY,shareFile);
                ArrayList uris = new ArrayList<Uri>();
                uris.add(contentUri);
                emailIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM,uris);
                MainActivity.this.startActivity(Intent.createChooser(emailIntent,"Send..."));

解决方法

等待您发送文件的应用程序活动完成，然后删除文件。

1. 注册请求代码（作为类的字段）：

private static final int REQUEST_CODE = 10;

2. 将文件保存在应用私有文件夹中：

try {
  File shareFile = new File(sharedir,shareName + ".txt");
  shareFile.createNewFile();
} catch (IOException e) {
  e.printStackTrace();
}

// write to file,as you do in the snippet

3. 启动 Activity，并在用户从所选应用返回时通知结果：

MainActivity.this.startActivityForResult(
  Intent.createChooser(emailIntent,"Send..."),REQUEST_CODE
);

4. 对结果执行操作：

@Override
protected void onActivityResult(int requestCode,int resultCode,Intent data) {
  if (requestCode == REQUEST_CODE) {
     // delete file here
     File shareFile = new File(sharedir,shareName + ".txt");
     if (shareFile.exists()) {
        shareFile.delete();
     }
  }
}