2回答

• 

  feels_chaotic

  2016-11-01 10:39:57

  已采纳

  所以到底是User还是user呢？ 建议贴全代码

  3 0

  feels_... 回复慕粉4142...

  layout文件里 表达式的变量名都是按照定义的variable的name名字来的

  2016-11-01 18:08:30

  共 3 条回复 >

• 

  慕粉4142398

  2016-11-01 17:40:04

  public class MainActivity extends AppCompatActivity {
  
      User user = new User("小白","小黑");
      private ActivityMainBinding binding;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
  //        binding.firstName.setText(user.getFirstName());
  //        binding.lastName.setText(user.getLastName());
          binding.setUser(user);
  //        binding.setVariable(BR.User,user);
        binding.setPresenter(new Presenter());
  
  
  
      }
  
      public class Presenter{
          public void onTextChanged(CharSequence s,int start,int before,int count){
              user.setFirstName(s.toString());
              binding.setUser(user);
          }
  
          public void onClick(View view){
              Toast.makeText(MainActivity.this,"点到了",Toast.LENGTH_SHORT).show();
          }
            public void  OnClickListenerBinding(User user){
                Toast.makeText(MainActivity.this,user.getLastName(),Toast.LENGTH_SHORT).show();
            }
      }
  }

  <?xml version="1.0" encoding="utf-8"?>
  <layout xmlns:android="http://schemas.android.com/apk/res/android"
     >
      <data>
         <variable
             name="User"
             type="chachewuyou.qs.demo.User"/>
          <variable
              name="presenter"
              type="chachewuyou.qs.demo.MainActivity.Presenter"/>
      </data>
  
      <LinearLayout
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:gravity="center_horizontal"
          android:orientation="vertical">
  
          <EditText
              android:onTextChanged="@{presenter.onTextChanged}"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:hint="输入First Name" />
  
          <EditText
  
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:hint="输入Last Name" />
  
          <TextView
              android:onClick="@{presenter.onClick}"
              android:text="@{User.firstName}"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content" />
  
          <TextView
              android:onClick="@{() -> presenter.OnClickListenerBinding(user)}"
              android:text="@{User.lastName}"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content" />
  
      </LinearLayout>
  </layout>

  
  

  1 0

  慕后端935...

  我也出现了同样的情况，就是报错，不知道什么原因

  2016-12-08 17:20:18

  共 1 条回复 >