Question

我正在尝试过滤掉所有不是图片，视频，音频，PDF和其他文档文件的文件，例如微软。

目前，我的代码中有这个：

var allowedUTIs = new string[] {
            UTType.Image,
            UTType.PDF,
            UTType.Video,
            UTType.Audio,
            UTType.Movie,
            UTTYPE.Text,
            "com.microsoft.word.doc",
            "com.microsoft.excel.xls",
            "com.microsoft.powerpoint.ppt",
            "org.openxmlformats.wordprocessingml.document"
        };

主要关注的是自定义类型。它是否涵盖了所有的microsoft office文件类型：doc，xls，ppt，docx等......

我是否还有其他未涵盖的文件类型，例如apple的特定文档文件。

Answer 1

        var allowedUtis = new string[] {
            UTType.UTF8PlainText,
            UTType.PlainText,
            UTType.RTF,
            UTType.PNG,
            UTType.Text,
            UTType.PDF,
            UTType.Image,
            UTType.UTF16PlainText,
            UTType.FileURL,
            "com.microsoft.word.doc",
            "org.openxmlformats.wordprocessingml.document",
            "com.microsoft.powerpoint.ppt"
            "org.openxmlformats.spreadsheetml.sheet",
            "org.openxmlformats.presentationml.presentation",
            "com.microsoft.excel.xls"
        };

这些是我的UTTypes，

在此，对于doc“com.microsoft.word.doc”，对于docx“org.openxmlformats.wordprocessingml.document”等。我已经对所有文件进行了测试。

Answer 2

或者你可以这样使用

       var fileTypes = new string[] {
        "public.utf8-plain-text", 
        "public.plain-text", 
        "public.text",
        "public.png", 
        "public.jpeg", 
        "com.microsoft.bmp",           
        "public.composite-content" 
        "com.adobe.pdf",
        "public.image", 
        "public.file-url", 
        "com.microsoft.word.doc",
        "org.openxmlformats.wordprocessingml.document",
        "com.microsoft.powerpoint.ppt",
        "org.openxmlformats.spreadsheetml.sheet",
        "org.openxmlformats.presentationml.presentation",
        "com.microsoft.excel.xls"
         };

https://developer.apple.com/library/archive/documentation/Miscellaneous/Reference/UTIRef/Articles/System-DeclaredUniformTypeIdentifiers.html

Answer 3

要允许视频和音频文件，也有一个选项，如果未添加，它将显示文件但已禁用，您不能选择它。

var allowedUTIs = new string[]
{
    UTType.UTF8PlainText,
    UTType.PlainText,
    UTType.RTF,
    UTType.PNG,
    UTType.Text,
    UTType.PDF,
    UTType.Image,
    UTType.UTF16PlainText,
    UTType.FileURL,
    UTType.Spreadsheet,
    UTType.MP3,
    UTType.MPEG4,
    UTType.MPEG4Audio,
    UTType.WaveformAudio,
    UTType.Audio,
    UTType.Video,
    UTType.GIF,
    UTType.BMP,
    "org.openxmlformats.wordprocessingml.document",
    "com.microsoft.powerpoint.ppt",
    "org.openxmlformats.spreadsheetml.sheet",
    "org.openxmlformats.presentationml.presentation",
    "com.microsoft.excel.xls",
    "com.microsoft.waveform-audio",
    "com.microsoft.windows-media-wmv",
    "com.adobe.illustrator.ai-image"
};

Apple文档：https://developer.apple.com/library/archive/documentation/Miscellaneous/Reference/UTIRef/Articles/System-DeclaredUniformTypeIdentifiers.html

Xamarin iOS：过滤掉Document Picker上的FileType节目

3 个答案: