How to get the file path for the picked files from the external storage in android?

问题

I am facing the issues in picking the file path of the file, i searched for all over the stack overflow but the issue is not solved .Code for picking the files from the device is shown below.

 Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
           intent.setType("*/*");
           intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
           //intent.addFlags(ST)
           startActivityForResult(Intent.createChooser(intent, "Choose File to Upload.."), PICK_FILE_REQUEST);

The picked files from intent are get by

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
   super.onActivityResult(requestCode, resultCode, data);
   if (resultCode == Activity.RESULT_OK) {
       if (requestCode == PICK_FILE_REQUEST) {
           if (data != null) {
               //no data present
               Uri uri = data.getData();
              String filePath = data.getData().getPath();
        //       String path = uri.getPath();
               file = new File(filePath);

               String name = getContentName(getContentResolver(), uri);
               try {
                   InputStream inStream = getContentResolver().openInputStream(uri);

               } catch (FileNotFoundException e) {
                   e.printStackTrace();
               }
               try {
                   bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), uri);

               } catch (IOException e) {
                   e.printStackTrace();
               }

               LinearLayout linearLayout = new LinearLayout(this);
               linearLayout.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
                       LinearLayout.LayoutParams.WRAP_CONTENT));
               linearLayout.setOrientation(LinearLayout.VERTICAL);

               ImageView imageView = new ImageView(this);
               imageView.setImageBitmap(bitmap);
               attachFile.addView(imageView);


               TextView textView = new TextView(this);
               textView.setText(name);
               attachFile.addView(textView);

               return;
           }

       }
   }

}

In the above code file path is obtained by the ` String filePath = data.getData().getPath(); but when uploading the files to the server exception is thrown like invalid document and file .How to get the correct path of the file from the uri ?

But the name of the file is picked by using

`public static String getContentName(ContentResolver resolver, Uri uri) {
       Cursor cursor = resolver.query(uri, null, null, null, null);
       cursor.moveToFirst();
       int nameIndex = cursor.getColumnIndex(MediaStore.MediaColumns.DISPLAY_NAME);
       if (nameIndex >= 0) {
           return cursor.getString(nameIndex);
       } else {
           return null;
       }
   }`

How to get the correct file path for the picked file ?

回答1:

How to get the correct file path for the picked file ?

You don't. There is no file. ACTION_GET_CONTENT has little to do with files. It has everything to do with content.

Use ContentResolver and openInputStream() to work with the content identified by the Uri. For uploading, either:

• Give the InputStream to the uploading API, if it can upload from that, or

• Use the InputStream and a FileOutputStream to some file that you control (e.g., in getCacheDir()) to make a copy of the content, then upload from your local copy

来源：https://stackoverflow.com/questions/43762230/how-to-get-the-file-path-for-the-picked-files-from-the-external-storage-in-andro