CODEWITHSUNDEEP
androidandroid-recyclerviewonactivityresultrecyclerview-layout
Meena Dev
Meena Dev

Reputation: 82

Access ViewHolder parameter in onActivityResult

I have a Recylerview with Button and TextView as params. I am opening a file chooser on button click.

@Override
public void onBindViewHolder(final FileChooserAdapter.MyViewHolder holder, final int position) {
    PojoClass pojoClass = pojoClassList_.get(position);
    holder.listViewName.setText(pojoClass.getListName());
    holder.fileBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent filePickIntent = new Intent(Intent.ACTION_GET_CONTENT);
            filePickIntent.setType("*/*");
            startActivityForResult(filePickIntent, 1);
        }
    });

}

Now, after selecting the file I am getting the file name in the OnActivityResult displayName variable. I want to set the holder.textview.setText(displayName); in onActivityResult:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    switch (requestCode) {
        case 1:
        // Get the Uri of the selected file
        Uri uri = data.getData();
        String uriString = uri.toString();
        File myFile = new File(uriString);
        String path = myFile.getAbsolutePath();


        if (uriString.startsWith("content://")) {
            Cursor cursor = null;
            try {
                cursor = getContentResolver().query(uri, null, null, null, null);
                if (cursor != null && cursor.moveToFirst()) {
                    displayName = cursor.getString(cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
                }
            } finally {
                cursor.close();
            }
        } else if (uriString.startsWith("file://")) {
            displayName = myFile.getName();
        }
        // I want to place the holder.textview.setText(displayName) here
        break;
    }
    super.onActivityResult(requestCode, resultCode, data);
}

Help me out , how to place the ViewHolder params to outside of the Adapter.

Upvotes: 1

Views: 273

Answers (3)

Joshua de Guzman
Joshua de Guzman

Reputation: 2143

Few notes

The ViewHolder's holder params is supposed to managed only by the Adapter class itself.

What you can do

  • Hold a reference for the currently selected file/s received from the onActivityResult, either by using local store like (List, SharedPreferences, Realm, etc.)

  • Populate the file chooser adapter again with the latest file items from the list

  • Invoke notifyDataSetChanged()

public void notifyDataSetChanged ()

Notifies the attached observers that the underlying data has been changed and any View reflecting the data set should refresh itself.

Read more on

Upvotes: 2

Vivek Mishra
Vivek Mishra

Reputation: 5705

You should not handle click events in the adapter itself. Instead forward them back to activity/fragment using interfaces.

So when you click on the button, the method of the interface is called in the activity/fragment and from their you can easily detect the onActivityResult() method.

So when you get the name, update that value in your adapter dataset and notify your adapter for the changes.

A simple interface like this(Code is in Kotlin)

interface OnClickListener {
    fun onClick(position:Int)
}

And make your activity implement it. Now in your adapter class constructor pass the interface as a parameter.

AdapterClass(private val listener: OnClickListener)

Upvotes: 0

Milind Mevada
Milind Mevada

Reputation: 3285

You will need to set the file name in your DataSet. And call notifyDataSetChange() on Activity Result.

Upvotes: 1

Related Questions