Android Data Binding 代码实战

本代码用来练习Android Data Binding技术

目前实现

豆瓣电影搜索

利用Data Binding在RecycleView展示电影列表

Model

public class Movie extends BaseObservable {
    private String id;
    private String title;
    private String original_title;
    private String year;
    private Images images;
    private Rating rating;

    @Bindable
    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
        notifyPropertyChanged(BR.title);

    }

    @Bindable
    public String getDescription() {
       return this.original_title + "\n" + this.getYear();
    }

    public void setOriginal_title(String original_title) {
        this.original_title = original_title;
        notifyPropertyChanged(BR.description);
    }

    public void setYear(String year) {
        this.year = year;
        notifyPropertyChanged(BR.description);
    }

    ...
   }

Layout

<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <data>
        <variable
            name="movie"
            type="com.aswifter.databinding.model.Movie" />
    </data>

    ...

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:orientation="vertical">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@{movie.title}"
            android:textAppearance="@style/TextAppearance.AppCompat.Title"
            android:textColor="@color/primary_text" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="2dp"
            android:text="@{movie.description}"
            android:textColor="@color/secondary_text" />


        <RatingBar
            style="@android:style/Widget.DeviceDefault.Light.RatingBar.Small"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="10dp"
            android:numStars="10"
            android:rating="@{movie.rating.average}"
            android:stepSize="0.5" />
    </LinearLayout>

   ...
</layout>

Binding

Movie movie = mMovies.get(position);
Glide.with(MovieActitiviy.this)
        .load(movie.getImages().getMedium())
        .fitCenter()
        .into(holder.binding.ivMovie);
holder.binding.setVariable(com.aswifter.databinding.BR.movie, movie);
holder.binding.executePendingBindings();