Android数据绑定Recycleview使用colorStateList设置cardview颜色

android {
    ...
    dataBinding {
        enabled = true
    }
}

<androidx.recyclerview.widget.RecyclerView
    ...
    app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager">

    <com.google.android.material.card.MaterialCardView
        ...
        app:cardBackgroundColor="@{colorStateList}" />

</androidx.recyclerview.widget.RecyclerView>

public class MyViewModel extends ViewModel {
    public final ObservableField<ColorStateList> colorStateList = new ObservableField<>();

    public MyViewModel() {
        // 设置颜色状态列表
        colorStateList.set(ContextCompat.getColorStateList(context, R.color.cardview_color));
    }
}

public class MainActivity extends AppCompatActivity {
    private MyViewModel viewModel;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // 创建ViewModel实例
        viewModel = new MyViewModel();

        // 使用数据绑定设置布局文件
        ActivityMainBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
        binding.setViewModel(viewModel);
        binding.executePendingBindings();
    }
}