(最新)Android(安卓)FileProvider配置实现文件由其他app(应用)打开或者分享

文章目录

    • 一、AndroidManifest.xml文件配置
    • 二、编写paths
    • 三、intent具体实现
    • 四、总结
    • 参考资料

最近在做一个安卓app,需要实现对ListView所列的特定后缀的文件进行分享,或者使用其他app打开,通过了解主要方法是使用intent启动其他程序,但是由于android为了提高私有文件的安全性,面向 Android 7.0 或更高版本的应用私有目录被限制访问,因此单纯打开文件或者分享文件将报错,需要配置android提供的FileProvider,在配置过程中,参照一些博客,发现都会报各种错误,遇到很多问题,他们写的要么零零散散,要不就是早期版本,现在已经不适用,最后在参照官方文档情况下终于解决,现在记录下载分享给大家,希望对你有所帮助。

效果如下:
(最新)Android(安卓)FileProvider配置实现文件由其他app(应用)打开或者分享_第1张图片

一、AndroidManifest.xml文件配置

    首先,我们需要定义一个FileProvider,打开AndroidManifest.xml文件,将如下代码添加进去:

<provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="fileprovider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/filepaths"/>
</provider>

注意: 这个所放的位置千万别放错了,有很多文章都没有讲所放具体位置,我自己就放错过,这个provider配置文件放在你“application”子目录里面,与“activity”同级,如下所示,具体manifest文件结构配置可参考这篇博客。

<activity
        android:name=".MainActivity"
        android:screenOrientation="portrait">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
		</intent-filter>
</activity>

<provider
    android:name="androidx.core.content.FileProvider"
    android:authorities="fileprovider"
    android:exported="false"
    android:grantUriPermissions="true">
    <meta-data
        android:name="android.support.FILE_PROVIDER_PATHS"
        android:resource="@xml/filepaths"/>
</provider>

name: 这个有很多博客写的是android.support.v4.content.FileProvider,注意,现在会报错,官方文档现在就是用我上面提供的类。
authorities: 这里只是让你提供一个此provider当前授权名,后续使用此fileprovider就需要提供这个名字,这里你可以随便取什么名字都可以,不像其他很多文章中起的各种各样,还以为必须要按什么格式起,也不说明为什么,所以这里建议大家可以起自己app名字,或者干脆直接写一个“fileprovider”,只需要后面用到时候跟这里一样就行。
exported: 这里直接写“false”,表示此FileProvider不需要公开;
grantUriPermissions: 这里写“true”,表示允许您授予对文件的临时访问权限,因此就可以通过其他app打开你所指定文件;
meta-data: FileProvider 只能为您预先指定的目录中的文件生成content URI,因此后续还需要定义一个xml文件用来指定目录,而为了将那个xml文件跟这个FileProvider链接起来,我们就需要定义“meta-data”这个元素,其中“name”指明是用来提供文件路径,而“resource”用来指明这个xml文件,这里可以创建一个名为“xml”文件夹,在文件夹内创建一个名为“filepaths”的xml文件,当然这个文件夹及文件名可以自己顺便取,只要将上面的“resource”命为自己创建的文件名即可。

二、编写paths

    上面我们说到,FileProvider 只能为您预先指定的目录中的文件生成content URI,因此我们需要指定目录用于授权给FileProvider,上面我们已经创建了一个filepaths.xml文件,将其打开,将以下内容复制到里面:

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <!--
    1、name对应的属性值,开发者可以自由定义;
    2、path对应的属性值,当前external-path标签下的相对路径
    比如:/storage/emulated/0/92Recycle-release.apk
    sdcard路径:/storage/emulated/0(WriteToReadActivity.java:176)
                      at cn.teachcourse.nougat.WriteToReadActivity.onClick(WriteToReadActivity.java:97)
                      at android.view.View.performClick(View.java:5610)
                      at android.view.View$PerformClick.run(View.java:22265)
    相对路径:/
    -->
    <!--1、对应内部内存卡根目录:Context.getFileDir()-->
    <files-path
        name="int_root"
        path="/" />
    <!--2、对应应用默认缓存根目录:Context.getCacheDir()-->
    <cache-path
        name="app_cache"
        path="/" />
    <!--3、对应外部内存卡根目录:Environment.getExternalStorageDirectory()-->
    <external-path
        name="ext_root"
        path="Documents/" />
    <!--4、对应外部内存卡根目录下的APP公共目录:Context.getExternalFileDir(String)-->
    <external-files-path
        name="ext_pub"
        path="/" />
    <!--5、对应外部内存卡根目录下的APP缓存目录:Context.getExternalCacheDir()-->
    <external-cache-path
        name="ext_cache"
        path="/" />
</paths>

    这里有多种路径,这就需要看你所需要打开的文件在哪个目录下,这里我们把所有的可能用到的路径都写上去,对于我这个项目,我的文件放在external-path路径下,也就是Environment.getExternalStorageDirectory()获取的路径下的文件,并且我放在此路径下的Documents文件夹下,所以我在external-path元素下更加针对性的对Documents文件夹路径授权,而如果直接写一个“/”就表示对所有该目录下文件授权。当然,对于其他元素,比如files-path,cache-path,external-files-path,external-cache-path我这里其实可以不用写,因为没用到,不需要对这些目录授权,但是如果你需要对这些目录里的文件进行分享授权,就需要定义这些元素。
    然后是这个name,这个name名字你可以随便命名,这里只是用来作为你的content uri其中的前面路径缩写名字,后面我会演示。

三、intent具体实现

终于把前面的准备工作做完了,现在可以在我们实际活动代码中启动设置intent来启动文件了,

Intent intent = new Intent();
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
intent.setAction(Intent.ACTION_VIEW);
Uri uri = FileProvider.getUriForFile(context,"fileprovider",new File(file_path));
intent.setDataAndType(uri, MapTable.getMIMEType(file));
startActivity(intent);

    首先初始化一个intent,然后添加Flags,特别注意,需要有intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);一行授予uri文件读写权限,很多文章没写这一行,导致出现文件无法打开或者不存在这个报错,然后使用FileProvider.getUriForFile获取uri,而不是一些文章写的使用Uri.fromFile(new File(file)),这里第一个参数是你当前context,第二个参数就是最开始在AndroidManifest.xml中provider的“authorities”元素的名字,需要与之相同,最后面是你的文件。
    然后,就是将这个文件uri提供给intent,这里使用intent.setDataAndType,可以指定某种类型文件打开,比如.mp3,.wav,.pdf等等,首先第一个参数是上面获取的uri,第二个参数是我们文件的MIMEtype,这个有两种获取方式:
1、你知道你的文件类型,可以直接通过查询,填入该文件MIMEtype即可,比如“.wav”文件的MIMEType是"audio/x-wav",所以我直接填入这个即可;
2、我通过程序自动识别文件后缀,指定其MIMEType,比如这里我定义了一个Maptable类,其中设置了获取MIMEType的方法,使用这个方法就可以获取。以下是该Maptable类定义代码:

public class MapTable {
    /**
     * -- MIME 列表 --
     */
    public static final String[][] MIME_MapTable = {
            // --{后缀名, MIME类型}   --
            {".3gp", "video/3gpp"},
            {".3gpp", "video/3gpp"},
            {".aac", "audio/x-mpeg"},
            {".amr", "audio/x-mpeg"},
            {".apk", "application/vnd.android.package-archive"},
            {".avi", "video/x-msvideo"},
            {".aab", "application/x-authoware-bin"},
            {".aam", "application/x-authoware-map"},
            {".aas", "application/x-authoware-seg"},
            {".ai", "application/postscript"},
            {".aif", "audio/x-aiff"},
            {".aifc", "audio/x-aiff"},
            {".aiff", "audio/x-aiff"},
            {".als", "audio/x-alpha5"},
            {".amc", "application/x-mpeg"},
            {".ani", "application/octet-stream"},
            {".asc", "text/plain"},
            {".asd", "application/astound"},
            {".asf", "video/x-ms-asf"},
            {".asn", "application/astound"},
            {".asp", "application/x-asap"},
            {".asx", " video/x-ms-asf"},
            {".au", "audio/basic"},
            {".avb", "application/octet-stream"},
            {".awb", "audio/amr-wb"},
            {".bcpio", "application/x-bcpio"},
            {".bld", "application/bld"},
            {".bld2", "application/bld2"},
            {".bpk", "application/octet-stream"},
            {".bz2", "application/x-bzip2"},
            {".bin", "application/octet-stream"},
            {".bmp", "image/bmp"},
            {".c", "text/plain"},
            {".class", "application/octet-stream"},
            {".conf", "text/plain"},
            {".cpp", "text/plain"},
            {".cal", "image/x-cals"},
            {".ccn", "application/x-cnc"},
            {".cco", "application/x-cocoa"},
            {".cdf", "application/x-netcdf"},
            {".cgi", "magnus-internal/cgi"},
            {".chat", "application/x-chat"},
            {".clp", "application/x-msclip"},
            {".cmx", "application/x-cmx"},
            {".co", "application/x-cult3d-object"},
            {".cod", "image/cis-cod"},
            {".cpio", "application/x-cpio"},
            {".cpt", "application/mac-compactpro"},
            {".crd", "application/x-mscardfile"},
            {".csh", "application/x-csh"},
            {".csm", "chemical/x-csml"},
            {".csml", "chemical/x-csml"},
            {".css", "text/css"},
            {".cur", "application/octet-stream"},
            {".doc", "application/msword"},
            {".dcm", "x-lml/x-evm"},
            {".dcr", "application/x-director"},
            {".dcx", "image/x-dcx"},
            {".dhtml", "text/html"},
            {".dir", "application/x-director"},
            {".dll", "application/octet-stream"},
            {".dmg", "application/octet-stream"},
            {".dms", "application/octet-stream"},
            {".dot", "application/x-dot"},
            {".dvi", "application/x-dvi"},
            {".dwf", "drawing/x-dwf"},
            {".dwg", "application/x-autocad"},
            {".dxf", "application/x-autocad"},
            {".dxr", "application/x-director"},
            {".ebk", "application/x-expandedbook"},
            {".emb", "chemical/x-embl-dl-nucleotide"},
            {".embl", "chemical/x-embl-dl-nucleotide"},
            {".eps", "application/postscript"},
            {".epub", "application/epub+zip"},
            {".eri", "image/x-eri"},
            {".es", "audio/echospeech"},
            {".esl", "audio/echospeech"},
            {".etc", "application/x-earthtime"},
            {".etx", "text/x-setext"},
            {".evm", "x-lml/x-evm"},
            {".evy", "application/x-envoy"},
            {".exe", "application/octet-stream"},
            {".fh4", "image/x-freehand"},
            {".fh5", "image/x-freehand"},
            {".fhc", "image/x-freehand"},
            {".fif", "image/fif"},
            {".fm", "application/x-maker"},
            {".fpx", "image/x-fpx"},
            {".fvi", "video/isivideo"},
            {".flv", "video/x-msvideo"},
            {".gau", "chemical/x-gaussian-input"},
            {".gca", "application/x-gca-compressed"},
            {".gdb", "x-lml/x-gdb"},
            {".gif", "image/gif"},
            {".gps", "application/x-gps"},
            {".gtar", "application/x-gtar"},
            {".gz", "application/x-gzip"},
            {".gif", "image/gif"},
            {".gtar", "application/x-gtar"},
            {".gz", "application/x-gzip"},
            {".h", "text/plain"},
            {".hdf", "application/x-hdf"},
            {".hdm", "text/x-hdml"},
            {".hdml", "text/x-hdml"},
            {".htm", "text/html"},
            {".html", "text/html"},
            {".hlp", "application/winhlp"},
            {".hqx", "application/mac-binhex40"},
            {".hts", "text/html"},
            {".ice", "x-conference/x-cooltalk"},
            {".ico", "application/octet-stream"},
            {".ief", "image/ief"},
            {".ifm", "image/gif"},
            {".ifs", "image/ifs"},
            {".imy", "audio/melody"},
            {".ins", "application/x-net-install"},
            {".ips", "application/x-ipscript"},
            {".ipx", "application/x-ipix"},
            {".it", "audio/x-mod"},
            {".itz", "audio/x-mod"},
            {".ivr", "i-world/i-vrml"},
            {".j2k", "image/j2k"},
            {".jad", "text/vnd.sun.j2me.app-descriptor"},
            {".jam", "application/x-jam"},
            {".jnlp", "application/x-java-jnlp-file"},
            {".jpe", "image/jpeg"},
            {".jpz", "image/jpeg"},
            {".jwc", "application/jwc"},
            {".jar", "application/java-archive"},
            {".java", "text/plain"},
            {".jpeg", "image/jpeg"},
            {".jpg", "image/jpeg"},
            {".js", "application/x-javascript"},
            {".kjx", "application/x-kjx"},
            {".lak", "x-lml/x-lak"},
            {".latex", "application/x-latex"},
            {".lcc", "application/fastman"},
            {".lcl", "application/x-digitalloca"},
            {".lcr", "application/x-digitalloca"},
            {".lgh", "application/lgh"},
            {".lha", "application/octet-stream"},
            {".lml", "x-lml/x-lml"},
            {".lmlpack", "x-lml/x-lmlpack"},
            {".log", "text/plain"},
            {".lsf", "video/x-ms-asf"},
            {".lsx", "video/x-ms-asf"},
            {".lzh", "application/x-lzh "},
            {".m13", "application/x-msmediaview"},
            {".m14", "application/x-msmediaview"},
            {".m15", "audio/x-mod"},
            {".m3u", "audio/x-mpegurl"},
            {".m3url", "audio/x-mpegurl"},
            {".ma1", "audio/ma1"},
            {".ma2", "audio/ma2"},
            {".ma3", "audio/ma3"},
            {".ma5", "audio/ma5"},
            {".man", "application/x-troff-man"},
            {".map", "magnus-internal/imagemap"},
            {".mbd", "application/mbedlet"},
            {".mct", "application/x-mascot"},
            {".mdb", "application/x-msaccess"},
            {".mdz", "audio/x-mod"},
            {".me", "application/x-troff-me"},
            {".mel", "text/x-vmel"},
            {".mi", "application/x-mif"},
            {".mid", "audio/midi"},
            {".midi", "audio/midi"},
            {".m4a", "audio/mp4a-latm"},
            {".m4b", "audio/mp4a-latm"},
            {".m4p", "audio/mp4a-latm"},
            {".m4u", "video/vnd.mpegurl"},
            {".m4v", "video/x-m4v"},
            {".mov", "video/quicktime"},
            {".mp2", "audio/x-mpeg"},
            {".mp3", "audio/x-mpeg"},
            {".mp4", "video/mp4"},
            {".mpc", "application/vnd.mpohun.certificate"},
            {".mpe", "video/mpeg"},
            {".mpeg", "video/mpeg"},
            {".mpg", "video/mpeg"},
            {".mpg4", "video/mp4"},
            {".mpga", "audio/mpeg"},
            {".msg", "application/vnd.ms-outlook"},
            {".mif", "application/x-mif"},
            {".mil", "image/x-cals"},
            {".mio", "audio/x-mio"},
            {".mmf", "application/x-skt-lbs"},
            {".mng", "video/x-mng"},
            {".mny", "application/x-msmoney"},
            {".moc", "application/x-mocha"},
            {".mocha", "application/x-mocha"},
            {".mod", "audio/x-mod"},
            {".mof", "application/x-yumekara"},
            {".mol", "chemical/x-mdl-molfile"},
            {".mop", "chemical/x-mopac-input"},
            {".movie", "video/x-sgi-movie"},
            {".mpn", "application/vnd.mophun.application"},
            {".mpp", "application/vnd.ms-project"},
            {".mps", "application/x-mapserver"},
            {".mrl", "text/x-mrml"},
            {".mrm", "application/x-mrm"},
            {".ms", "application/x-troff-ms"},
            {".mts", "application/metastream"},
            {".mtx", "application/metastream"},
            {".mtz", "application/metastream"},
            {".mzv", "application/metastream"},
            {".nar", "application/zip"},
            {".nbmp", "image/nbmp"},
            {".nc", "application/x-netcdf"},
            {".ndb", "x-lml/x-ndb"},
            {".ndwn", "application/ndwn"},
            {".nif", "application/x-nif"},
            {".nmz", "application/x-scream"},
            {".nokia-op-logo", "image/vnd.nok-oplogo-color"},
            {".npx", "application/x-netfpx"},
            {".nsnd", "audio/nsnd"},
            {".nva", "application/x-neva1"},
            {".oda", "application/oda"},
            {".oom", "application/x-atlasMate-plugin"},
            {".ogg", "audio/ogg"},
            {".pac", "audio/x-pac"},
            {".pae", "audio/x-epac"},
            {".pan", "application/x-pan"},
            {".pbm", "image/x-portable-bitmap"},
            {".pcx", "image/x-pcx"},
            {".pda", "image/x-pda"},
            {".pdb", "chemical/x-pdb"},
            {".pdf", "application/pdf"},
            {".pfr", "application/font-tdpfr"},
            {".pgm", "image/x-portable-graymap"},
            {".pict", "image/x-pict"},
            {".pm", "application/x-perl"},
            {".pmd", "application/x-pmd"},
            {".png", "image/png"},
            {".pnm", "image/x-portable-anymap"},
            {".pnz", "image/png"},
            {".pot", "application/vnd.ms-powerpoint"},
            {".ppm", "image/x-portable-pixmap"},
            {".pps", "application/vnd.ms-powerpoint"},
            {".ppt", "application/vnd.ms-powerpoint"},
            {".pqf", "application/x-cprplayer"},
            {".pqi", "application/cprplayer"},
            {".prc", "application/x-prc"},
            {".proxy", "application/x-ns-proxy-autoconfig"},
            {".prop", "text/plain"},
            {".ps", "application/postscript"},
            {".ptlk", "application/listenup"},
            {".pub", "application/x-mspublisher"},
            {".pvx", "video/x-pv-pvx"},
            {".qcp", "audio/vnd.qcelp"},
            {".qt", "video/quicktime"},
            {".qti", "image/x-quicktime"},
            {".qtif", "image/x-quicktime"},
            {".r3t", "text/vnd.rn-realtext3d"},
            {".ra", "audio/x-pn-realaudio"},
            {".ram", "audio/x-pn-realaudio"},
            {".ras", "image/x-cmu-raster"},
            {".rdf", "application/rdf+xml"},
            {".rf", "image/vnd.rn-realflash"},
            {".rgb", "image/x-rgb"},
            {".rlf", "application/x-richlink"},
            {".rm", "audio/x-pn-realaudio"},
            {".rmf", "audio/x-rmf"},
            {".rmm", "audio/x-pn-realaudio"},
            {".rnx", "application/vnd.rn-realplayer"},
            {".roff", "application/x-troff"},
            {".rp", "image/vnd.rn-realpix"},
            {".rpm", "audio/x-pn-realaudio-plugin"},
            {".rt", "text/vnd.rn-realtext"},
            {".rte", "x-lml/x-gps"},
            {".rtf", "application/rtf"},
            {".rtg", "application/metastream"},
            {".rtx", "text/richtext"},
            {".rv", "video/vnd.rn-realvideo"},
            {".rwc", "application/x-rogerwilco"},
            {".rar", "application/x-rar-compressed"},
            {".rc", "text/plain"},
            {".rmvb", "audio/x-pn-realaudio"},
            {".s3m", "audio/x-mod"},
            {".s3z", "audio/x-mod"},
            {".sca", "application/x-supercard"},
            {".scd", "application/x-msschedule"},
            {".sdf", "application/e-score"},
            {".sea", "application/x-stuffit"},
            {".sgm", "text/x-sgml"},
            {".sgml", "text/x-sgml"},
            {".shar", "application/x-shar"},
            {".shtml", "magnus-internal/parsed-html"},
            {".shw", "application/presentations"},
            {".si6", "image/si6"},
            {".si7", "image/vnd.stiwap.sis"},
            {".si9", "image/vnd.lgtwap.sis"},
            {".sis", "application/vnd.symbian.install"},
            {".sit", "application/x-stuffit"},
            {".skd", "application/x-koan"},
            {".skm", "application/x-koan"},
            {".skp", "application/x-koan"},
            {".skt", "application/x-koan"},
            {".slc", "application/x-salsa"},
            {".smd", "audio/x-smd"},
            {".smi", "application/smil"},
            {".smil", "application/smil"},
            {".smp", "application/studiom"},
            {".smz", "audio/x-smd"},
            {".sh", "application/x-sh"},
            {".snd", "audio/basic"},
            {".spc", "text/x-speech"},
            {".spl", "application/futuresplash"},
            {".spr", "application/x-sprite"},
            {".sprite", "application/x-sprite"},
            {".sdp", "application/sdp"},
            {".spt", "application/x-spt"},
            {".src", "application/x-wais-source"},
            {".stk", "application/hyperstudio"},
            {".stm", "audio/x-mod"},
            {".sv4cpio", "application/x-sv4cpio"},
            {".sv4crc", "application/x-sv4crc"},
            {".svf", "image/vnd"},
            {".svg", "image/svg-xml"},
            {".svh", "image/svh"},
            {".svr", "x-world/x-svr"},
            {".swf", "application/x-shockwave-flash"},
            {".swfl", "application/x-shockwave-flash"},
            {".t", "application/x-troff"},
            {".tad", "application/octet-stream"},
            {".talk", "text/x-speech"},
            {".tar", "application/x-tar"},
            {".taz", "application/x-tar"},
            {".tbp", "application/x-timbuktu"},
            {".tbt", "application/x-timbuktu"},
            {".tcl", "application/x-tcl"},
            {".tex", "application/x-tex"},
            {".texi", "application/x-texinfo"},
            {".texinfo", "application/x-texinfo"},
            {".tgz", "application/x-tar"},
            {".thm", "application/vnd.eri.thm"},
            {".tif", "image/tiff"},
            {".tiff", "image/tiff"},
            {".tki", "application/x-tkined"},
            {".tkined", "application/x-tkined"},
            {".toc", "application/toc"},
            {".toy", "image/toy"},
            {".tr", "application/x-troff"},
            {".trk", "x-lml/x-gps"},
            {".trm", "application/x-msterminal"},
            {".tsi", "audio/tsplayer"},
            {".tsp", "application/dsptype"},
            {".tsv", "text/tab-separated-values"},
            {".ttf", "application/octet-stream"},
            {".ttz", "application/t-time"},
            {".txt", "text/plain"},
            {".ult", "audio/x-mod"},
            {".ustar", "application/x-ustar"},
            {".uu", "application/x-uuencode"},
            {".uue", "application/x-uuencode"},
            {".vcd", "application/x-cdlink"},
            {".vcf", "text/x-vcard"},
            {".vdo", "video/vdo"},
            {".vib", "audio/vib"},
            {".viv", "video/vivo"},
            {".vivo", "video/vivo"},
            {".vmd", "application/vocaltec-media-desc"},
            {".vmf", "application/vocaltec-media-file"},
            {".vmi", "application/x-dreamcast-vms-info"},
            {".vms", "application/x-dreamcast-vms"},
            {".vox", "audio/voxware"},
            {".vqe", "audio/x-twinvq-plugin"},
            {".vqf", "audio/x-twinvq"},
            {".vql", "audio/x-twinvq"},
            {".vre", "x-world/x-vream"},
            {".vrml", "x-world/x-vrml"},
            {".vrt", "x-world/x-vrt"},
            {".vrw", "x-world/x-vream"},
            {".vts", "workbook/formulaone"},
            {".wax", "audio/x-ms-wax"},
            {".wbmp", "image/vnd.wap.wbmp"},
            {".web", "application/vnd.xara"},
            {".wav", "audio/x-wav"},
            {".wma", "audio/x-ms-wma"},
            {".wmv", "audio/x-ms-wmv"},
            {".wi", "image/wavelet"},
            {".wis", "application/x-InstallShield"},
            {".wm", "video/x-ms-wm"},
            {".wmd", "application/x-ms-wmd"},
            {".wmf", "application/x-msmetafile"},
            {".wml", "text/vnd.wap.wml"},
            {".wmlc", "application/vnd.wap.wmlc"},
            {".wmls", "text/vnd.wap.wmlscript"},
            {".wmlsc", "application/vnd.wap.wmlscriptc"},
            {".wmlscript", "text/vnd.wap.wmlscript"},
            {".wmv", "video/x-ms-wmv"},
            {".wmx", "video/x-ms-wmx"},
            {".wmz", "application/x-ms-wmz"},
            {".wpng", "image/x-up-wpng"},
            {".wps", "application/vnd.ms-works"},
            {".wpt", "x-lml/x-gps"},
            {".wri", "application/x-mswrite"},
            {".wrl", "x-world/x-vrml"},
            {".wrz", "x-world/x-vrml"},
            {".ws", "text/vnd.wap.wmlscript"},
            {".wsc", "application/vnd.wap.wmlscriptc"},
            {".wv", "video/wavelet"},
            {".wvx", "video/x-ms-wvx"},
            {".wxl", "application/x-wxl"},
            {".x-gzip", "application/x-gzip"},
            {".xar", "application/vnd.xara"},
            {".xbm", "image/x-xbitmap"},
            {".xdm", "application/x-xdma"},
            {".xdma", "application/x-xdma"},
            {".xdw", "application/vnd.fujixerox.docuworks"},
            {".xht", "application/xhtml+xml"},
            {".xhtm", "application/xhtml+xml"},
            {".xhtml", "application/xhtml+xml"},
            {".xla", "application/vnd.ms-excel"},
            {".xlc", "application/vnd.ms-excel"},
            {".xll", "application/x-excel"},
            {".xlm", "application/vnd.ms-excel"},
            {".xls", "application/vnd.ms-excel"},
            {".xlt", "application/vnd.ms-excel"},
            {".xlw", "application/vnd.ms-excel"},
            {".xm", "audio/x-mod"},
            {".xml", "text/xml"},
            {".xmz", "audio/x-mod"},
            {".xpi", "application/x-xpinstall"},
            {".xpm", "image/x-xpixmap"},
            {".xsit", "text/xml"},
            {".xsl", "text/xml"},
            {".xul", "text/xul"},
            {".xwd", "image/x-xwindowdump"},
            {".xyz", "chemical/x-pdb"},
            {".yz1", "application/x-yz1"},
            {".z", "application/x-compress"},
            {".zac", "application/x-zaurus-zac"},
            {".zip", "application/zip"},
            {"", "*/*"}
    };

    /**
     * --获取文件类型 --
     */
    public static String getMIMEType(String filePath) {
        String type = "*/*";
        String fName = filePath;

        int dotIndex = fName.lastIndexOf(".");
        if (dotIndex < 0) {
            return type;
        }

        String end = fName.substring(dotIndex, fName.length()).toLowerCase();
        if (end == "") {
            return type;
        }

        for (int i = 0; i < MIME_MapTable.length; i++) {
            if (end.equals(MIME_MapTable[i][0])) {
                type = MIME_MapTable[i][1];
            }
        }
        return type;
    }

}


四、总结

    以上就是android将指定后缀(类型)文件通过其他文件打开或者分享整个过程,希望对大家有用,如果帮助到你,谢谢一键三连。(参考资料都有不同程度问题,如果想顺利运行还请仔细参考本文章,转载务必清晰注明出处!!!)

参考资料

【1】官方文档
【2】Android 7.0之访问文件的权限和FileProvider类
【3】unexpected element found in < manifest >< application >.
【4】Android exposed beyond app through Intent.getData()
【5】xx.apk exposed beyond app through Intent.getData()

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