- 一个Person bean
public class Person {
public ObservableField<String> name = new ObservableField<>();
public ObservableInt age = new ObservableInt();
public ObservableBoolean isMan = new ObservableBoolean();}
- xml文件中
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android">
<data>
<variable
type="com.lefeee.dbdemoapplication.bean.Person"
name="mPerson" />
<variable
type="com.lefeee.dbdemoapplication.MainActivity"
name="click" />
</data>
<LinearLayout
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.lefeee.dbdemoapplication.MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@{mPerson.name}" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@{ String.valueOf(mPerson.age) }" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text= '@{mPerson.isMan ? "man" : "woman"}'/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="click"
android:onClick="@{click.click}" />
</LinearLayout>
</layout>
activity中
public class MainActivity extends AppCompatActivity {
Person mPerson;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mPerson = new Person();
mPerson.name.set("jack");
mPerson.age.set(28);
mPerson.isMan.set(true);
ActivityMainBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
binding.setMPerson(mPerson);
binding.setClick(this);
}
public void click(View view) {
mPerson.name.set("rose");
mPerson.age.set(22);
mPerson.isMan.set(false);
Toast.makeText(getApplicationContext(), "click", Toast.LENGTH_SHORT).show();
}
}
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