Tencent/QMUI_iOS

QMUIImagePreviewView 如何设置图片和视频混合轮播查看，我的部分代码设置如下，滑动时出现卡顿。

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#1,389 建立於 2022年3月30日

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 (1 留言) (0 反應) (0 負責人)Objective-C (7,200 star) (1,444 fork)batch import
help wanted

描述

`- (void)imagePreviewView:(QMUIImagePreviewView *)imagePreviewView renderZoomImageView:(QMUIZoomImageView *)zoomImageView atIndex:(NSUInteger)index { zoomImageView.reusedIdentifier = @(index);

if (index == 1) {
    dispatch_async(dispatch_get_main_queue(), ^{
        AVPlayerItem *item = [AVPlayerItem playerItemWithURL:[NSURL URLWithString:@"https://ddg-mall-test.obs.cn-north-4.myhuaweicloud.com/dr-test%2Fbusiness%2Ffile%2Fbb0cc146-847d-424a-a9f9-4a5f8576c4d9.mp4"]];
        zoomImageView.videoPlayerItem = item;
    });
} else {
    zoomImageView.image = [UIImage imageNamed:@"image0"];
}

}

  • (QMUIImagePreviewMediaType)imagePreviewView:(QMUIImagePreviewView *)imagePreviewView assetTypeAtIndex:(NSUInteger)index { if (index == 1) { return QMUIImagePreviewMediaTypeVideo; } return QMUIImagePreviewMediaTypeImage; }`

貢獻者指南

技術棧
objective cios
領域
mobile
議題類型
performance
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
mostly clear
前置要求
Objective C basicsQMUI library usageiOS AVPlayerItem
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
35
研究方向
Investigate the lagging issue when mixing image and video in QMUIImagePreviewView. The user sets videoPlayerItem asynchronously on the main queue but still experiences stutter. Check if the video loading is causing main thread stalls. Review the QMUIZoomImageView implementation for potential optimizations. Also consider preloading or caching strategies for videos. Refer to the issue thread for any maintainer guidance.