iOS11 PDFView内存泄漏

Question

我使用PDFView来显示PDF。如果我快速滚动，我会得到内存泄漏。

let pdfView = PDFView.init(frame: CGRect.zero)
self.view.insertSubview(pdfView, belowSubview: bottomBar)
pdfView.snp.makeConstraints { (make) in
    make.top.equalTo(topBar.snp.bottom).offset(8)
    make.left.equalTo(8)
    make.right.equalTo(-8)
    make.bottom.equalTo(-54)
}
let url = Bundle.main.url(forResource: "swift", withExtension: "pdf")!
let doc = PDFDocument.init(url: url)
pdfView.document = doc
if let page = doc?.page(at: 0) {
    let rect = page.bounds(for: .mediaBox)
    let scale = (UIScreen.width - 16) / rect.width
    pdfView.minScaleFactor = scale
    pdfView.maxScaleFactor = scale
    pdfView.scaleFactor = scale
    pdfView.displaysPageBreaks = true
    pdfView.pageBreakMargins = UIEdgeInsets.init(top: 0, left: 0, bottom: 8/scale, right: 0)
    pdfView.layoutDocumentView()
}

查看内存图图像

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Answer 1

你能试着在WebView中显示你的PDF吗？

如下所示：

let url = yourLocalURL
webView.loadRequest(URLRequest(url: URL(string: url)!))