Skip to content

Instantly share code, notes, and snippets.

@bdunovska

bdunovska/MainActivity.java

Created August 16, 2015 17:47
Show Gist options
  • Save bdunovska/b7237374806db7ed23aa to your computer and use it in GitHub Desktop.
Save bdunovska/b7237374806db7ed23aa to your computer and use it in GitHub Desktop.
Download ZIP
DataBindingExample
Raw
activity_main.xml
<layout>
<data>
<variable
name="user"
type="com.example.belladunovska.databinding.User" />
</data>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/first_name_list_item_text_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@{user.firstName}" />
<Button
android:id="@+id/change_name_button"
android:layout_width="match_parent"
android:layout_height="30dp" />
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="300dp" />
</LinearLayout>
</layout>
Raw
item_list.xml
<layout>
<data>
<variable
name="user"
type="com.example.belladunovska.databinding.User" />
</data>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="horizontal">
<TextView
android:id="@+id/first_name_list_item_text_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@{user.firstName}" />
<TextView
android:id="@+id/last_name_list_item_text_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@{user.lastName}" />
</LinearLayout>
</layout>
Raw
MainActivity.java
public class MainActivity extends AppCompatActivity {
private User user;
private LinearLayoutManager layoutManager;
private RecyclerView recyclerView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ActivityMainBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
user = new User("Bella", "Dunovska", false);
binding.setUser(user);
layoutManager = new LinearLayoutManager(this);
recyclerView = binding.recyclerView;
recyclerView.setHasFixedSize(false);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(new RecyclerAdapter(this, generateDummyData()));
binding.changeNameButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
user.setFirstName("Rocks");
}
});
}
public ArrayList<User> generateDummyData(){
ArrayList<User> rockstars = new ArrayList<>();
User user = new User("Rob","Halford", true);
User user1 = new User("Bruce","Dickinson", true);
User user3 = new User("Till","Lindemann", true);
rockstars.add(user);
rockstars.add(user1);
rockstars.add(user3);
return rockstars;
}
}
Raw
RecyclerAdapter.java
public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ViewHolder> {
private Context context;
private ArrayList<User> users;
public RecyclerAdapter(Context context, ArrayList<User> users) {
this.users = users;
this.context = context;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater layoutInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
ItemListBinding listItemUserBinding = DataBindingUtil.inflate(layoutInflater, R.layout.item_list, parent, false);
return new ViewHolder(listItemUserBinding);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.listItemUserBinding.setUser(users.get(position));
}
@Override
public int getItemCount() {
return users.size();
}
class ViewHolder extends RecyclerView.ViewHolder {
private ItemListBinding listItemUserBinding;
public ViewHolder(ItemListBinding itemListBinding) {
super(itemListBinding.getRoot());
this.listItemUserBinding = itemListBinding;
}
}
}
Raw
User.java
public class User extends BaseObservable {
public String firstName;
public String lastName;
public boolean isRockStar;
public User(String firstName, String lastName, boolean isRockStar) {
this.firstName = firstName;
this.lastName = lastName;
this.isRockStar = isRockStar;
}
@Bindable
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public boolean getRockStar() {
return isRockStar;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
notifyPropertyChanged(com.example.belladunovska.databinding.BR.firstName);
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment