###类似美团的下拉菜 ####单使用方式： #####布局文件：
<com.yjs.complexmenu.ComplexMenuView
android:id="@+id/complexMenuView"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/textView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="我是菜单要改变的内容"
/>
</com.yjs.complexmenu.ComplexMenuView>
#####可配置的属性： ######//设置顶部每个菜单之间分割线的高度 ######app:divide_height_vertical="20dp" ######//设置顶部每个菜单之间分割线的宽度 ######app:divide_width_vertical="1dp" ######//设置顶部每个菜单之间分割线的颜色 ######app:divide_color_vertical="@android:color/darker_gray" ######//设置顶部菜单栏与下面包含的内容之间分割线的高度 ######app:divide_height="1dp" ######//设置顶部菜单栏与下面包含的内容之间分割线的颜色 ######app:divide_color="@android:color/background_dark"
首先创建顶部每个菜单的类型item,需要实现IComplexItemView接口，实现void setChecked(boolean isChecked);方法来设置切换不同菜单时顶部主菜单的背景及颜色变换
public class ComplexTitleView extends TextView implements IComplexItemView{
public ComplexTitleView(Context context) {
this(context, null);
}
public ComplexTitleView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public ComplexTitleView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
setChecked(false);
}
@Override
public void setChecked(boolean isChecked) {
//选中则把文字改成黑色
if (isChecked){
setTextColor(Color.BLACK);
}else {//默认为蓝色
setTextColor(Color.BLUE);
}
}
}#####然后创建每个主菜单对应的子菜的选择项view
ublic class ComplexSortMenu extends LinearLayout {
public ComplexSortMenu(Context context) {
this(context, null);
}
public ComplexSortMenu(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public ComplexSortMenu(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init();
}
private OnSelectedListener onSelectedListener;
private void init() {
RecyclerView recyclerView = (RecyclerView) LayoutInflater.from(getContext()).inflate(R.layout.sort_view, null);
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
recyclerView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
List<String> strings = new ArrayList<>();
strings.add("北京市");
strings.add("东城区");
strings.add("西城区");
strings.add("海淀区");
strings.add("朝阳区");
SortAdapter sortAdapter = new SortAdapter(strings);
recyclerView.setAdapter(sortAdapter);
addView(recyclerView);
}
private class SortAdapter extends RecyclerView.Adapter {
List<String> data;
public SortAdapter(List<String> data) {
this.data = data;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item, parent,false);
return new ItemViewHolder(view);
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
if (holder instanceof ItemViewHolder) {
((ItemViewHolder) holder).textView.setText(data.get(position));
holder.itemView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(onSelectedListener!=null){
onSelectedListener.onSelected(data.get(position));
}
}
});
}
}
@Override
public int getItemCount() {
return data.size();
}
class ItemViewHolder extends RecyclerView.ViewHolder {
TextView textView;
public ItemViewHolder(View itemView) {
super(itemView);
textView = (TextView) itemView.findViewById(R.id.textView);
}
}
}
public interface OnSelectedListener {
void onSelected(String name);
}
public OnSelectedListener getOnSelectedListener() {
return onSelectedListener;
}
public void setOnSelectedListener(OnSelectedListener onSelectedListener) {
this.onSelectedListener = onSelectedListener;
}
}###最后是创建菜单，使用ComplexMenuView的addTitleView(IComplexItemView titleView, View sortView) 方法一次加入主菜单及其对应的子菜单， 最后调用build()方法完成构建
ComplexTitleView complexTitleView = new ComplexTitleView(this);
complexTitleView.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
complexTitleView.setText("选项一");
complexTitleView.setHeight(100);
complexTitleView.setGravity(Gravity.CENTER);
ComplexTitleView complexTitleView1 = new ComplexTitleView(this);
complexTitleView1.setText("选项二");
complexTitleView1.setGravity(Gravity.CENTER);
complexTitleView1.setHeight(100);
ComplexSortMenu complexSortMenu = new ComplexSortMenu(this);
complexSortMenu.setOnSelectedListener(new ComplexSortMenu.OnSelectedListener() {
@Override
public void onSelected(String name) {
textView.setText(name);
complexMenuView.hideMenus();
}
});
complexMenuView.addTitleView(complexTitleView,complexSortMenu)
.addTitleView(complexTitleView1,sortView1)
.build();