android-learn-app/app/src/main/java/top/iletter/lvnote/FragmentProfile.java

package top.iletter.lvnote;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;

public class FragmentProfile extends Fragment {

    public FragmentProfile() {
        // Required empty public constructor
    }

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater,
                             @Nullable ViewGroup container,
                             @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_profile, container, false);
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

        // 安全地操作 View
        TextView movieCount = view.findViewById(R.id.tv_movie_count);
        TextView bookCount = view.findViewById(R.id.tv_book_count);

        if (movieCount != null) movieCount.setText("14");
        if (bookCount != null) bookCount.setText("18");
    }
}