分享最近有用 记录一下 public static void shareFile(Context context, String fileName) { File file = new File(fileName); if (null != file && file.exists()) { Intent share = new Intent(Intent.ACTION_SEND); //android7以上用FileProvider if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) { Uri contentUri = FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID ".fileprovider", file); share.putExtra(Intent.EXTRA_STREAM, contentUri); } else { share.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file)); } share.setType(getMIMEType(file)); share.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); share.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); context.startActivity(Intent.createChooser(share, "分享文件")); } else { Toast.makeText(context, "不存在共享文件", Toast.LENGTH_SHORT).show(); } }
/** * 根据文件的后缀名获得相应的对应MIME类型。 * * @param file */ public static String getMIMEType(File file) { String type = "*/*"; String fName = file.getName(); ////获取后缀名前的分隔符"."在fName中的位置。 int dotIndex = fName.lastIndexOf("."); if (dotIndex < 0) { return type; } /* 获取文件的后缀名 */ String end = fName.substring(dotIndex, fName.length()).toLowerCase(); if (end == "") return type; //在MIME在与文件类型的匹配表中找到相应的MIME类型。 for (int i = 0; i < MIME_MapTable.length; i ) { if (end.equals(MIME_MapTable[i][0])) type = MIME_MapTable[i][1]; } return type; } public static final String[][] MATCH_ARRAY = { // --{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"}, {".docx", "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"},
{".pptx", "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"},
{".xlsx", "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"},
{"", "*/*"}
};
这是用来判断文件类型的（因为分享的文件种类比较多）如果只分享一个图片类型这样就行了
share.setType("image/*");