项目创建

Administrator

2021-10-23 c879d70dd6bd9dc83a08efb07b5d5562a2a008e9

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package com.duqing.missions.ui.dashboard;
 
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;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProvider;
import com.duqing.missions.R;
import com.duqing.missions.databinding.FragmentDashboardBinding;
 
public class DashboardFragment extends Fragment {
 
    private DashboardViewModel dashboardViewModel;
private FragmentDashboardBinding binding;
 
    public View onCreateView(@NonNull LayoutInflater inflater,
            ViewGroup container, Bundle savedInstanceState) {
        dashboardViewModel =
                new ViewModelProvider(this).get(DashboardViewModel.class);
 
    binding = FragmentDashboardBinding.inflate(inflater, container, false);
    View root = binding.getRoot();
 
        final TextView textView = binding.textDashboard;
        dashboardViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {
            @Override
            public void onChanged(@Nullable String s) {
                textView.setText(s);
            }
        });
        return root;
    }
 
@Override
    public void onDestroyView() {
        super.onDestroyView();
        binding = null;
    }
}