Android弹窗ListPopupWindow的简单应用详解 Android弹窗ListPopupWindow的简单应

概述
常用的弹窗有菜单，或者Dialog，但更加人性化和可自定义的还是PopupWindow
如果只是展示列表数据或者弹窗列表选择，直接使用ListPopupWindow即可，不用再单独去设置布局。
如果想要更加多样化的那就自定义一个布局，使用PopupWindow即可，也不复杂。
用法
自定义ListPopupWindow类

public class ChargeItemSumPop extends ListPopupWindow { public ChargeItemSumPop(Context context) {super(context); }}

属性设置

【Android弹窗ListPopupWindow的简单应用详解】因为里面已经有一个列表控件了，所以，不用再绑定布局

setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); setWidth(600); setModal(true); setBackgroundDrawable(new ColorDrawable(0xCC000000));

绑定Adapter

//添加想要展示的数据Calendar calendar = Calendar.getInstance(); int year = calendar.get(Calendar.YEAR); List lstYear = new ArrayList<>(); for(int i = 2015; i <= year; i++){lstYear.add(i); }ArrayAdapter adapter = new ArrayAdapter<>(context, android.R.layout.simple_spinner_dropdown_item, lstYear); setAdapter(adapter);

Activity监听

ChargeDateYearPop pop = new ChargeDateYearPop(this); pop.setOnItemClickListener((adapterView, view, i, l) -> {bindingView.chargeYear.setText(String.valueOf(adapterView.getAdapter().getItem(i))); pop.dismiss(); }); pop.setAnchorView(bindingView.chargeYear); pop.show();

完整弹窗类
与普通的弹窗不一样的地方在于这里面是一个列表，所以要绑定Adapter进行展示

public class ChargeDateYearPop extends ListPopupWindow {public ChargeDateYearPop(Context context) {super(context); setHeight(800); setWidth(200); setModal(true); setBackgroundDrawable(new ColorDrawable(0xCC000000)); initView(context); }private void initView(Context context) {Calendar calendar = Calendar.getInstance(); int year = calendar.get(Calendar.YEAR); List lstYear = new ArrayList<>(); for(int i = 2015; i <= year; i++){lstYear.add(i); }Collections.sort(lstYear); Collections.reverse(lstYear); ArrayAdapter adapter = new ArrayAdapter<>(context, android.R.layout.simple_spinner_dropdown_item, lstYear); setAdapter(adapter); }}

Activity

private void showChargeDateYear(){ChargeDateYearPop pop = new ChargeDateYearPop(this); pop.setOnItemClickListener((adapterView, view, i, l) -> {bindingView.chargeYear.setText(String.valueOf(adapterView.getAdapter().getItem(i))); pop.dismiss(); //重载数据等的操作//mPresenter.getCharges(getChargeDate()); }); pop.setAnchorView(bindingView.chargeYear); pop.show(); }

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