124 lines
3.4 KiB
Dart
124 lines
3.4 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:peach/entity/_.dart';
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import 'package:photo_view/photo_view.dart';
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import 'package:photo_view/photo_view_gallery.dart';
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/*
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* 查看大图
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*/
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class PhotoViewGalleryScreen extends StatefulWidget {
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List<ImagePickerEntity> images = [];
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int index = 0;
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String heroTag;
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PageController controller;
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PhotoViewGalleryScreen(
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{Key key,
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@required this.images,
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this.index,
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this.controller,
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this.heroTag})
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: super(key: key) {
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controller = PageController(initialPage: index);
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}
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@override
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_PhotoViewGalleryScreenState createState() => _PhotoViewGalleryScreenState();
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}
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class _PhotoViewGalleryScreenState extends State<PhotoViewGalleryScreen> {
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int currentIndex = 0;
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@override
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void initState() {
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super.initState();
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currentIndex = widget.index;
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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body: Stack(
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children: <Widget>[
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Positioned(
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top: 0,
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left: 0,
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bottom: 0,
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right: 0,
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child: Container(
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child: PhotoViewGallery.builder(
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scrollPhysics: const BouncingScrollPhysics(),
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builder: (BuildContext context, int index) {
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return PhotoViewGalleryPageOptions(
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imageProvider: widget.images[index].getNetWorkPath != null
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? NetworkImage(widget.images[index]?.getNetWorkPath)
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: FileImage(widget.images[index]?.getPath),
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);
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},
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itemCount: widget.images.length,
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backgroundDecoration: null,
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pageController: widget.controller,
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enableRotation: true,
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onPageChanged: (index) {
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setState(
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() {
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currentIndex = index;
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},
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);
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},
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),
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),
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),
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Positioned(
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//图片index显示
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top: MediaQuery.of(context).padding.top + 15,
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width: MediaQuery.of(context).size.width,
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child: Center(
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child: Text("${currentIndex + 1}/${widget.images.length}",
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style: TextStyle(color: Colors.white, fontSize: 16)),
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),
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),
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Positioned(
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//右上角关闭按钮
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right: 10,
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top: MediaQuery.of(context).padding.top,
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child: IconButton(
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icon: Icon(
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Icons.close,
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size: 30,
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color: Colors.white,
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),
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onPressed: () {
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Navigator.of(context).pop();
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},
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),
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),
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],
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),
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);
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}
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}
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class FadeRoute extends PageRouteBuilder {
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final Widget page;
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FadeRoute({this.page})
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: super(
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pageBuilder: (
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BuildContext context,
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Animation<double> animation,
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Animation<double> secondaryAnimation,
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) =>
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page,
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transitionsBuilder: (
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BuildContext context,
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Animation<double> animation,
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Animation<double> secondaryAnimation,
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Widget child,
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) =>
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FadeTransition(
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opacity: animation,
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child: child,
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),
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);
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}
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