52 lines
1.9 KiB
Dart
52 lines
1.9 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:get/get.dart';
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import 'package:video_player/video_player.dart';
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/// 全屏播放页业务逻辑：横竖屏切换 + 后台自动暂停
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/// 注：[playCtr] 由外部页面持有并释放，本类只借用，绝不能 dispose
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class VideoFullLogic extends GetxController with WidgetsBindingObserver {
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VideoFullLogic({required this.playCtr, this.isAutoV = true});
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final VideoPlayerController playCtr;
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final bool isAutoV; // true:按视频比例决定是否转横屏；false:强制转横屏
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double get aspectRatio => playCtr.value.aspectRatio;
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@override
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void onInit() {
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super.onInit();
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WidgetsBinding.instance.addObserver(this);
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// 横向视频(或调用方强制)才转横屏，竖屏视频保持竖屏全屏
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if (aspectRatio > 1 || !isAutoV) {
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SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual, overlays: [SystemUiOverlay.bottom]);
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SystemChrome.setPreferredOrientations([
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DeviceOrientation.landscapeLeft,
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DeviceOrientation.landscapeRight,
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]);
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}
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// 转屏后 Get.width/height 才是新值，下一帧刷一次让画面按新尺寸铺满
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WidgetsBinding.instance.addPostFrameCallback((_) => update());
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}
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/// 切后台暂停，防止息屏/切走后声音还在外放
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@override
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void didChangeAppLifecycleState(AppLifecycleState state) {
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super.didChangeAppLifecycleState(state);
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if (state == AppLifecycleState.paused) playCtr.pause();
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}
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/// 退出全屏：恢复竖屏 + 状态栏，再退页
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void exitFullScreen() {
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SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual, overlays: [SystemUiOverlay.bottom, SystemUiOverlay.top]);
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SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp]);
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Get.back();
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}
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@override
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void onClose() {
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WidgetsBinding.instance.removeObserver(this);
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super.onClose(); // playCtr 属于调用方，这里不释放
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}
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}
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