MultiType
为实现RecyclerView显示多种类型数据,包括各种Headers、Footers,参考drakeet的扛鼎之作MultiType后, 着重优化了一对多的显示,即一种数据类型对应多种布局的情况,例如新闻数据类型(News.class)就可能显示 文本、左图、右图、大图、多图等多种item布局,面对这种情况就要根据数据中的类型字段(你指定属性的get()方法)去区分, 这个库是通过Java8的新特性传递方法的引用来解决这个问题的。
该库不仅可以显示同一种数据类型对应不同的layout,还可以显示不同数据类型对应不同的layout,如果你没有 通过MultiTypeRegistry全局注册或 通过MultiTypeAdapter局部注册过你的数据类型, 这个库不会让应用崩掉,会返回默认的提示layout,当然你也可以注册自己的默认数据类型,具体使用参考下面。
Sample预览图
MultiType的使用
Gradle
compile 'com.sunfusheng:MultiType:'
全局注册
MultiTypeRegistry.getInstance().register(News.class, News::getType, News.TYPE_TEXT, new TextBinder());
MultiTypeRegistry.getInstance().register(News.class, News::getType, News.TYPE_BIG_IMAGE, new BigImageBinder());
MultiTypeRegistry.getInstance().register(News.class, News::getType, News.TYPE_RIGHT_IMAGE, new RightImageBinder());
MultiTypeRegistry.getInstance().register(News.class, News::getType, News.TYPE_THREE_IMAGES, new ThreeImagesBinder());
MultiTypeRegistry.getInstance().register(Music.class, new MusicBinder());
MultiTypeRegistry.getInstance().register(Video.class, new VideoBinder());
注册默认或不支持类型
MultiTypeRegistry.getInstance().registerDefaultBinder(new NonsupportBinder());
局部注册,局部注册会覆盖全局的
MultiTypeAdapter multiTypeAdapter = new MultiTypeAdapter();
multiTypeAdapter.register(News.class, News::getType, News.TYPE_TEXT, new TextBinder());
multiTypeAdapter.register(News.class, News::getType, News.TYPE_BIG_IMAGE, new BigImageBinder());
multiTypeAdapter.register(News.class, News::getType, News.TYPE_RIGHT_IMAGE, new RightImageBinder());
multiTypeAdapter.register(News.class, News::getType, News.TYPE_THREE_IMAGES, new ThreeImagesBinder());
multiTypeAdapter.register(Music.class, new MusicBinder());
multiTypeAdapter.register(Video.class, new VideoBinder());
初始化,设置数据
RecyclerView recyclerView = findViewById(R.id.recyclerView);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setAdapter(multiTypeAdapter);
multiTypeAdapter.setItems(@NonNull List<?> items);
multiTypeAdapter.notifyDataSetChanged();