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。
自定义ListPopupWindow类
public class ChargeItemSumPop extends ListPopupWindow { public ChargeItemSumPop(Context context) { super(context); } }
属性设置
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<Integer> lstYear = new ArrayList<>(); for(int i = 2015; i <= year; i++){ lstYear.add(i); } ArrayAdapter<Integer> 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();
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<Integer> lstYear = new ArrayList<>(); for(int i = 2015; i <= year; i++){ lstYear.add(i); } Collections.sort(lstYear); Collections.reverse(lstYear); ArrayAdapter<Integer> 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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