Can't resolve Android databinding class

Question

While using data binding , I am not able to get class MainActivityBinding as per Data Binding Guide

My layout name is activity_main.xml. I

Answer 1

Try restarting Android Studio, or manually searching for the ActivityMainBinding class and adding your import.

Put your data tag in your last included xml. Here is an example:

MainActivity.java
public class MainActivity extends AppCompatActivity {

    public Item item;
    ActivityMainBinding binding;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        item = new Item();
        item.setChecked(true);
        item.setName("a");
        binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
        binding.included.secondIncluded.setModel(item);


Item.java
public class Item extends BaseObservable {
    private String name;
    private Boolean checked;
    @Bindable
    public String getName() {
        return this.name;
    }
    @Bindable
    public Boolean getChecked() {
        return this.checked;
    }
    public void setName(String name) {
        this.name = name;
        notifyPropertyChanged(BR.name);
    }
    public void setChecked(Boolean checked) {
        this.checked = checked;
        notifyPropertyChanged(BR.checked);
    }
}


activity_main.xml


    
        
        
    



included_layout.xml


    
        
        
    


second_included_layout.xml