MultiTypeAdapter

快速使用

1.引入依赖

dependencies {
 implementation 'cn.junhua.android.adapter:multitypeadapter:3.0.0-beta'
}

2.基本用法

a.步骤

b.实例

public class BasisImgBean {
 private int res = R.mipmap.content8;
}
public class BasisTextBean {
 private int type;
 private String text = "BasisTextBean.class";
}

//简单布局可以继承SimpleItemViewBinder简化创建代码
public class ImgBinderItemView extends SimpleItemViewBinder<BasisImgBean> {
 @Override
 public void onBindViewHolder(CommonViewHolder holder, BasisImgBean bean, int position) {
 holder.setText(R.id.tv_type_content, "BasisImgBean.class -> R.layout.binder_basis_img")
 .setImageResource(R.id.iv_img, bean.getRes());
 }
 @Override
 protected int getLayoutId() {
 return R.layout.binder_basis_img;
 }
}
//对比两种继承方式
public class TextLeftBinderItemView extends SimpleItemViewBinder<BasisTextBean> {
 @Override
 public void onBindViewHolder(CommonViewHolder holder, BasisTextBean bean, int position) {
 holder.setText(R.id.tv_layout_left, "R.layout.binder_left_text")
 .setText(R.id.tv_class_left, bean.getText())
 .setOnItemClickListener(view -> Toast.makeText(view.getContext(),"TextLeftBinderItemView item " + position,Toast.LENGTH_SHORT).show());
 }
 @Override
 protected int getLayoutId() {
 return R.layout.binder_left_text;
 }
}
//复杂布局可以继承ItemViewBinder,自定义ViewHolder完成复杂操作
public class TextRightBinderItemView extends ItemViewBinder<BasisTextBean, TextRightBinderItemView.TextRightViewHolder> {
 @Override
 public TextRightViewHolder onCreateViewHolder(LayoutInflater inflater, ViewGroup parent) {
 return new TextRightViewHolder(inflater.inflate(R.layout.binder_right_text, parent, false));
 }
 @Override
 public void onBindViewHolder(TextRightViewHolder holder, BasisTextBean bean, int position) {
 holder.bindData(bean, position);
 }
 class TextRightViewHolder extends RecyclerView.ViewHolder {
 TextView tv_type_right;
 TextView tv_class_right;
 TextRightViewHolder(View itemView) {
 super(itemView);
 tv_type_right = itemView.findViewById(R.id.tv_type_right);
 tv_class_right = itemView.findViewById(R.id.tv_class_right);
 }
 void bindData(BasisTextBean bean, int position) {
 tv_type_right.setText("R.layout.binder_right_text");
 tv_class_right.setText(bean.getText());
 itemView.setOnClickListener(view -> Toast.makeText(view.getContext(), "TextRightBinderItemView item " + position, Toast.LENGTH_SHORT).show());
 }
 }
}

 //初始化MultiTypeAdapter
 MultiTypeAdapter multiTypeAdapter = new MultiTypeAdapter();
 //注册ViewBinder
 multiTypeAdapter.register(BasisImgBean.class, new ImgBinderItemView());//一对一
 multiTypeAdapter.register(BasisTextBean.class)//一对多
 .mapping(new TextLeftBinderItemView(), new TextRightBinderItemView())
 .match((bean, position) -> {
 if (bean.getType() == 1) return TextLeftBinderItemView.class;
 return TextRightBinderItemView.class;
 });
 //设置数据集合
 mMultiTypeAdapter.setList(...);

c.效果图jpg

3.更多方法

MultiTypeAdapter:

//设置默认的ItemViewBinder,没有匹配到合适的ItemViewBinder使用默认的
public void setDefaultViewBinder(@Nullable ItemViewBinder<Object, ?> binder)
//为数据条目注册ItemViewBinder
public <T> void register(@NonNull Class<T> beanClass, @NonNull ItemViewBinder<T, ?> binder)
//为同一个数据类型注册不同的ItemViewBinder,处理一种数据类型对应多种ItemViewBinder情况
public <T> OneToManyMapper<T> register(@NonNull Class<T> beanClass)
//设置展示的数据集合,内部仅引用数据集合
public void setList(@Nullable List<?> list)

ItemViewBinder:

public final MultiTypeAdapter getAdapter()
protected long getItemId(T item, int position)
protected void onViewRecycled(ViewHolder holder)
protected boolean onFailedToRecycleView(ViewHolder holder)
protected void onViewAttachedToWindow(ViewHolder holder)
protected void onViewDetachedFromWindow(ViewHolder holder)

CommonViewHolder:

//findViewById同样的功能,内部提供缓存view的功能
public <T extends View> T findView(@IdRes int viewId)
public RecyclerView getRecyclerView()
//快捷设置TextView的文本
public CommonViewHolder setText(@IdRes int viewId, String text)
public CommonViewHolder setText(@IdRes int viewId, @StringRes int resId)
//快捷设置TextView的文本颜色
public CommonViewHolder setTextColor(@IdRes int viewId, ColorStateList colorStateList)
public CommonViewHolder setTextColor(@IdRes int viewId, @ColorInt int colorInt)
//快捷设置ImageView的src
public CommonViewHolder setImageResource(@IdRes int imageViewId, @DrawableRes int drawableId)
//快捷设置View的背景
public CommonViewHolder setBackgroundResource(@IdRes int viewId, @DrawableRes int drawableId)
//设置条目的根itemView的点击事件
public CommonViewHolder setOnItemClickListener(View.OnClickListener onClickListener)
//清除View缓存,一般不需要调用
public void clear()
//获取常用资源
public Context getContext()
public Resources getResources()
public String getString(@StringRes int id)

4.更多实例展示

淘宝首页效果(基本用法) 效果图gif

朋友圈多图效果(高级用法:一对多)效果图gif

结语