code snippets for databinding post

after-activity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  binding = DataBindingUtil.setContentView(this, R.layout.activity_login);
  viewModel = new LoginViewModel(this);
  binding.setLogin(viewModel);
  setSupportActionBar(binding.toolBar);
}

after-layout.xml

<layout xmlns:android="http://schemas.android.com/apk/res/android">
   <data>
       <variable name="login" type="com.celites.aamantran.ViewModels.LoginViewModel"/>
   </data>
<LinearLayout ...>
   <LinearLayout ...>
       <android.support.design.widget.TextInputLayout ...>
           <EditText android:id="@+id/userNameEditText" 
                     android:hint="@{login.userName}"
             .../>
       </android.support.design.widget.TextInputLayout>
       <Button android:onClick="@{login.verify}"
               android:id="@+id/btnSendVerification" .../>
   </LinearLayout>
</LinearLayout>
</layout>

before-activity.java

@Override
  protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_login);
     EditText userName = (EditText) findViewById(R.id.userNameEditText);
     Button sendVerification = (Button) findViewById(R.id.btnSendVerification);
     sendVerification.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
           //TODO: Check username is null or not
           //TODO: Send it to webservice, (if network is there, otherwise save somewhere to send it later)
        }
    });
  }

before-layout.xml

<LinearLayout ...>
   <LinearLayout ...>
       <android.support.design.widget.TextInputLayout ...>
           <EditText android:id="@+id/userNameEditText" .../>
       </android.support.design.widget.TextInputLayout>
       <Button android:id="@+id/btnSendVerification" .../>
   </LinearLayout>
</LinearLayout>

databinding-setup.groovy

//In your project's build.gradle verify this
classpath 'com.android.tools.build:gradle:1.5.0'

// In each module's build.gradle
android{
        dataBinding {
                enabled = true
        }
}

example-binding.java

MainActivityBinding binding = DataBindingUtil.setContentView(this, R.layout.main_activity);
User user = new User("Test", "User");
binding.setUser(user);

example-layout.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android">
   <data>
       <variable name="user" type="com.example.User"/>
   </data>
   <LinearLayout
       android:orientation="vertical"
       android:layout_width="match_parent"
       android:layout_height="match_parent">
       <TextView android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text="@{user.firstName}"/>
       <TextView android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text="@{user.lastName}"/>
   </LinearLayout>
</layout>

example-user.java

public class User {
  public final String firstName;
  public final String lastName;

  public User(String firstName, String lastName) {
     this.firstName = firstName;
     this.lastName = lastName;
  }
}

multiple-binding.java

@BindingAdapter({"binding"})
public static void bindEditText(EditText view, final ObservableString bindableString) {
	view.addTextChangedListener(new DefaultTextWatcher() {
		@Override
		public void onTextChanged(CharSequence s, int start, int before, int count) {
			bindableString.set(s.toString());
		}
	});
	String newValue = bindableString.get();
	if (!view.getText().toString().equals(newValue)) {
		view.setText(newValue);
	}
}

@BindingAdapter({"binding"})
public static void bindSwitch(CompoundButton button, final BindableBoolean bindableBoolean) {
	button.setOnCheckedChangeListener(new OnCheckedChangeListener() {
		@Override
		public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
			bindableBoolean.set(isChecked);
		}
	});
	boolean isChecked = bindableBoolean.get();
	if (button.isChecked() != isChecked) {
		button.setChecked(isChecked);
	}
}

@BindingAdapter({"binding"})
public static void bindSwitch(SwitchCompat button, final BindableBoolean bindableBoolean) {
	button.setOnCheckedChangeListener(new OnCheckedChangeListener() {
		@Override
		public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
			bindableBoolean.set(isChecked);
		}
	});
	boolean isChecked = bindableBoolean.get();
	if (button.isChecked() != isChecked) {
		button.setChecked(isChecked);
	}
}

	@BindingAdapter({"binding"})
	public static void bindTextViews(TextView textView, final ObservableString bindableString) {
		String newValue = bindableString.get();
		if (!textView.getText().toString().equals(newValue)) {
			textView.setText(newValue);
		}
	}

twoway-binding.java

@BindingAdapter({"binding"})
public static void bindSwitch(CompoundButton button, final BindableBoolean bindableBoolean) {
  button.setOnCheckedChangeListener(new OnCheckedChangeListener() {
     @Override
     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        bindableBoolean.set(isChecked);
     }
  });
  boolean isChecked = bindableBoolean.get();
  if (button.isChecked() != isChecked) {
     button.setChecked(isChecked);
  }
}

@BindingAdapter(value = {"visibleIf", "inverse"}, requireAll = false)
public static void changeViewDependency(View view, BindableBoolean bool, boolean inverse) {
  int visibility = bool.get() ? View.VISIBLE : View.GONE;
  int visibilityInverse = bool.get() ? View.GONE : View.VISIBLE;
  view.setVisibility((inverse) ? visibilityInverse : visibility);
}

twoway-layout.xml

<android.support.v7.widget.SwitchCompat
       app:binding="@{eventViewModel.toAllDay}"
 />
<Button
       app:binding="@{eventViewModel.toTime}"
       app:visibleIf="@{eventViewModel.toAllDay}"
/>