android 实现下拉筛选的效果

可以先看下效果是不是自己需要的效果

如果是，可以继续往下看了

实现思路就是popwindow +RecyclerView 很是简单，这里只是简单的写了下

布局的效果

然后，点就是点击的弹框，然后弹框的内容使用recyclerview 来显示就行

没有其他的逻辑，下面看下代码

弹框效果

 popupWindow = new PopupWindow(contentView,LinearLayout.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT, false);popupWindow.setOutsideTouchable(true);popupWindow.setBackgroundDrawable(new BitmapDrawable());popupWindow.setFocusable(true);popupWindow.setAnimationStyle(R.style.popwin_anim_style);popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {@Overridepublic void onDismiss() {}});

然后就是写RecyclerView 了，，我把demo 贴出来把，看一参看下

public class MainActivity extends AppCompatActivity {private LinearLayout ll_list_default;private TextView ll_list_default_txt;private ImageView ll_list_default_icon;private LinearLayout ll_list_brand;private TextView list_brand_txt;private ImageView ll_list_brand_icon;private LinearLayout list_list_type;private TextView list_list_type_txt;private ImageView list_list_type_icon;private RecyclerView recyclerView;private FmmAdapter<String> popAdapter, popAdapter1, popAdapter2;private List<String> popList, popList1, popList2;private PopupWindow popupWindow;private String currentDefault, currentBrand,currentType;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);InitView();ll_list_default = findViewById(R.id.ll_list_default);ll_list_default_txt = findViewById(R.id.ll_list_default_txt);ll_list_default_icon = findViewById(R.id.ll_list_default_icon);ll_list_brand = findViewById(R.id.ll_list_brand);list_brand_txt = findViewById(R.id.list_brand_txt);ll_list_brand_icon = findViewById(R.id.ll_list_brand_icon);list_list_type = findViewById(R.id.list_list_type);list_list_type_txt = findViewById(R.id.list_list_type_txt);list_list_type_icon = findViewById(R.id.list_list_type_icon);ll_list_default.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {ll_list_default_txt.setTextColor(Color.parseColor("#00d8a0"));ll_list_default_icon.setImageResource(R.mipmap.screen_icon_selected);recyclerView.setLayoutManager(new LinearLayoutManager(MainActivity.this));recyclerView.setAdapter(popAdapter);popupWindow.showAsDropDown(ll_list_default);}});ll_list_brand.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {list_brand_txt.setTextColor(Color.parseColor("#00d8a0"));ll_list_brand_icon.setImageResource(R.mipmap.screen_icon_selected);recyclerView.setLayoutManager(new LinearLayoutManager(MainActivity.this));recyclerView.setAdapter(popAdapter1);popupWindow.showAsDropDown(ll_list_default);}});list_list_type.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {list_list_type_txt.setTextColor(Color.parseColor("#00d8a0"));list_list_type_icon.setImageResource(R.mipmap.screen_icon_selected);recyclerView.setLayoutManager(new LinearLayoutManager(MainActivity.this));recyclerView.setAdapter(popAdapter2);popupWindow.showAsDropDown(ll_list_default);}});}private void InitView() {popList = new ArrayList<>();popList.add("默认排序");popList.add("价格最高");popList.add("价格最低");popList1 = new ArrayList<>();popList1.add("全部");popList1.add("自营");popList1.add("非自营");popList2 = new ArrayList<>();popList2.add("全部");popList2.add("三只松鼠");popList2.add("百草味");popList2.add("良品铺子");popList2.add("好想你");View contentView = getLayoutInflater().inflate(R.layout.popwin_supplier_list, null);popupWindow = new PopupWindow(contentView,LinearLayout.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT, false);popupWindow.setOutsideTouchable(true);popupWindow.setBackgroundDrawable(new BitmapDrawable());popupWindow.setFocusable(true);popupWindow.setAnimationStyle(R.style.popwin_anim_style);popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {@Overridepublic void onDismiss() {}});recyclerView = contentView.findViewById(R.id.popwin_supplier_list_lv);contentView.findViewById(R.id.popwin_supplier_list_bottom).setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {popupWindow.dismiss();}});popAdapter = new FmmAdapter<>(R.layout.item_listview_popwin, popList);popAdapter.setOnCallBackData(new FmmAdapter.OnCallBackData<String>() {@Overridepublic void convertView(BaseViewHolder holder, String item) {((TextView) holder.getView(R.id.listview_popwind_tv)).setText(item);if (ll_list_default_txt.getText().toString().trim().equals(item)) {((TextView) holder.getView(R.id.listview_popwind_tv)).setTextColor(Color.parseColor("#00d8a0"));holder.getView(R.id.iv_select_icon).setVisibility(View.VISIBLE);} else {((TextView) holder.getView(R.id.listview_popwind_tv)).setTextColor(Color.parseColor("#333333"));holder.getView(R.id.iv_select_icon).setVisibility(View.GONE);}}});popAdapter.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {@Overridepublic void onItemClick(BaseQuickAdapter adapter, View view, int position) {//后期自己做请求处理popupWindow.dismiss();currentDefault = popList.get(position);ll_list_default_txt.setText(currentDefault);}});popAdapter1 = new FmmAdapter<>(R.layout.item_listview_popwin, popList1);popAdapter1.setOnCallBackData(new FmmAdapter.OnCallBackData<String>() {@Overridepublic void convertView(BaseViewHolder holder, String item) {((TextView) holder.getView(R.id.listview_popwind_tv)).setText(item);if (ll_list_default_txt.getText().toString().trim().equals(item)) {((TextView) holder.getView(R.id.listview_popwind_tv)).setTextColor(Color.parseColor("#00d8a0"));holder.getView(R.id.iv_select_icon).setVisibility(View.VISIBLE);} else {((TextView) holder.getView(R.id.listview_popwind_tv)).setTextColor(Color.parseColor("#333333"));holder.getView(R.id.iv_select_icon).setVisibility(View.GONE);}}});popAdapter1.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {@Overridepublic void onItemClick(BaseQuickAdapter adapter, View view, int position) {//后期自己做请求处理popupWindow.dismiss();currentBrand = popList1.get(position);list_brand_txt.setText(currentBrand);}});popAdapter2 = new FmmAdapter<>(R.layout.item_listview_popwin, popList2);popAdapter2.setOnCallBackData(new FmmAdapter.OnCallBackData<String>() {@Overridepublic void convertView(BaseViewHolder holder, String item) {((TextView) holder.getView(R.id.listview_popwind_tv)).setText(item);if (list_list_type_txt.getText().toString().trim().equals(item)) {((TextView) holder.getView(R.id.listview_popwind_tv)).setTextColor(Color.parseColor("#00d8a0"));holder.getView(R.id.iv_select_icon).setVisibility(View.VISIBLE);} else {((TextView) holder.getView(R.id.listview_popwind_tv)).setTextColor(Color.parseColor("#333333"));holder.getView(R.id.iv_select_icon).setVisibility(View.GONE);}}});popAdapter2.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {@Overridepublic void onItemClick(BaseQuickAdapter adapter, View view, int position) {//后期自己做请求处理popupWindow.dismiss();currentType = popList2.get(position);list_list_type_txt.setText(currentType);}});}
}

demo 实现效果，点击跳转到git

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