Delete an item from firebase without crashing the app

Question

I\'m new to android and I\'ve been playing around with this sample app from firebase. I want to add a delete button on PostDetailActivity which deletes the current post being vi

Answer 1

You just need to add an if statement to check if the dataSnapshot has a value or null

public void onDataChange(DataSnapshot dataSnapshot) {
    if (dataSnapshot.exists()) {
        // Get Post object and use the values to update the UI
        Post post = dataSnapshot.getValue(Post.class);
        // Text Views in activity
        mAuthorView.setText(post.author);
        mTitleView.setText(post.title);
        mBodyView.setText(post.body);
    }
}