DataBinding 错误：Error:android.databinding.tool.util.LoggedErrorException: Found data binding errors.

一、前言：

今天在用 DataBinding 的时候爆出“Error:android.databinding.tool.util.LoggedErrorException: Found data binding errors.”

错误如下图：

image.png

二、解决方法：

错误用法：

  <!-- data标签 -->
    <data>
        <variable
            name="presenter"
            type="com.function.luo.activity.A01MainActivity" />
    </data>

正确用法：

 <!-- data标签 -->
    <data>
        <variable
            name="presenter"
 type="com.function.luo.activity.A01MainActivity.Presenter" />
    </data>

就是在用 DataBinding 初始化variable数据的时候，一定要到具体的类中。

A01MainActivity代码展示：

public class A01MainActivity extends AppCompatActivity {

    public Presenter presenter;

    private ActivityMainBinding binding;

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

    private void inject() {
        //现在我们通过DataBindingUtil设置布局文件
        binding = DataBindingUtil.setContentView(this, R.layout.activity_main);

        //初始化Presenter对象
        presenter = new Presenter();
        //将presenter对象赋予XML中的 data -> variable -> presenter
        binding.setPresenter(presenter);
    }

    public class Presenter {

        public String message = " ~ ";

        public void baseDataBinding() {
            startActivity(new Intent(A01MainActivity.this,A02DataBindingBaseActivity.class));
        }
    }
}