Android開發筆記(3) 應用程序之間內容分享詳解

PS:改變文章標題只爲更加詳細說明功能和排版,以方便往後複習。這兩篇文章已經寫得很詳細php

Android 應用程序之間內容分享詳解(一)
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轉載請註明地址:http://blog.csdn.net/xiaanming/article/details/9395991html


一個Andoird應用程序的重要的地方是他們有相互溝通和整合的能力,一個應用程序能夠和另外一個應用程序交互,接下來咱們來看看Android應用之間的內容分享java

當你構建Intent的時候,必需要指定Intent的Action觸發,定義Intent的Action例如ACTION_SEND,你大概能夠猜到指定Action爲ACTION_SEND的Intent的做用是從一個Activity發送數據到另外一個Activity,甚至跨越不一樣的進程,將數據發送給另外一個Activity,你須要指定數據和他的類型,系統將識別接收的Activity,並顯示他們給用戶(假若有多個選擇的時候)或者當即啓動Activity(只要一個選擇的時候)android

1.發送文本內容c++


最直接最經常使用的是用ACTION_SEND來從一個應用發送文本內容到另外一個應用,例如,咱們的內置瀏覽器能夠與任何頁面當前的URL來共享文字,下面的例子就是共享文本內容web

Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
//這裏是你發送的文本
sendIntent.putExtra(Intent.EXTRA_TEXT, "我用手機測試分享內容");
sendIntent.setType("text/plain");
startActivity(sendIntent);

假如你安裝了過濾Action爲ACTION_SEND, MIME type爲「text/plain」的應用程序,這個系統就會啓動,假如系統匹配到多個這樣子的應用程序,他就會彈出一個Dialog列出全部的應用供用戶選擇(一個選擇器),以下圖


可能你以爲上面的代碼很簡單,我很容易就能寫出來,但是你發現了沒有,當咱們的手機裏面沒有地圖類型的應用程序,你執行startActivity方法,你的程序就會出現Crash(崩潰),因此咱們須要先判斷下系統是否有這類型的應用程序,判斷也很簡單
數組

public boolean hasApplication(Intent intent){  
        PackageManager packageManager = getPackageManager();  
        //查詢是否有該Intent的Activity  
        List<ResolveInfo> activities = packageManager.queryIntentActivities(intent, 0);  
        //activities裏面不爲空就有,不然就沒有  
        return activities.size() > 0 ? true : false;  

因此咱們在startActivity的時候要作上面的判斷,這樣子咱們開發出來的程序纔會更加的健壯,少一些Crash用戶體驗也會更好,假如每次都要判斷你師傅會以爲煩?因此咱們也能夠使用Intent的Intent.createChooser方法

他有以下優勢瀏覽器

  • 1.1 即便用戶選擇了默認的方式,選擇器仍然會彈出來
  • 1.2 若是沒有匹配到這樣的應用程序,系統就會提示消息
  • 1.3 你能夠指定選擇器Dialog的標題 
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, "我用手機測試分享內容");
sendIntent.setType("text/plain");
startActivity(Intent.createChooser(sendIntent, "我是彈出框的標題"));

注:某些郵件類應用程序,如Gmail,咱們能夠使用putExtra(Intent.EXTRA_EMAIL, String[]) 添加一個字符串數組到Intent中網絡


2.發送二進制內容


二進制內容的共享使用Action爲ACTION_SEND,在設置適當的MIME類型,而且添加putExtra(Intent.EXTRA_STREAM, URI),下面是一個經常使用的共享圖片的代碼,也能夠共享任何類型的二進制內容

Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.putExtra(Intent.EXTRA_STREAM, uriToImage);
shareIntent.setType("image/jpeg");
startActivity(Intent.createChooser(shareIntent, getResources().getText(R.string.send_to)));

主要下面幾點

  • 你能夠使用MIME type爲「 */*」 ,他只會匹配處理通常數據流的Activity
  • 接收應用程序須要Uri指定數據的訪問權限
  1. 在SD卡的文件,咱們使用File file = new File(filePath); Uri.fromFile(file),而後把他傳遞給Intent
  2. 在應用程序的目錄中,openFileOutput的模式爲MODE_WORLD_READABLE,而後咱們能夠使用getFileStreamPath()返回一個File,而後利用Uri.fromFile(file)傳遞給Intent
  3. 能夠掃描圖像,視頻和音頻等媒體文件,添加到系統MediaStore使用SCANFILE()來掃描文件,掃描完成後會調用 onScanCompleted()回調方法來返回一個Uri
  4. 圖片使用insertImage()方法插入到系統MediaStore也會返回一個圖片的Uri

下面是共享圖片的例子

Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
File file = new File("mnt/sdcard/share.png");
			
System.out.println(Uri.fromFile(file));
shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
shareIntent.setType("image/jpeg");
startActivity(Intent.createChooser(shareIntent, "共享圖片"));

選擇QQ空間後,圖片就顯示在那裏了,以下圖

咱們要共享多個二進制內容利用Action爲ACTION_SEND_MULTIPLE,下面是咱們共享多張圖片
ArrayList<Uri> imageUris = new ArrayList<Uri>();
imageUris.add(imageUri1); // Add your image URIs here
imageUris.add(imageUri2);

Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND_MULTIPLE);
shareIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, imageUris);
shareIntent.setType("image/*");
startActivity(Intent.createChooser(shareIntent, "Share images to.."));

下面我列出幾個經常使用的MIME type類型

  • text/plain(純文本)
  • text/html(HTML文檔)
  • application/xhtml+xml(XHTML文檔)
  • image/gif(GIF圖像)
  • image/jpeg(JPEG圖像)【PHP中爲:image/pjpeg】
  • image/png(PNG圖像)【PHP中爲:image/x-png】
  • video/mpeg(MPEG動畫)
  • application/octet-stream(任意的二進制數據)
  • application/pdf(PDF文檔)
  • application/msword(Microsoft Word文件)
  • message/rfc822(RFC 822形式)
  • multipart/alternative(HTML郵件的HTML形式和純文本形式,相同內容使用不一樣形式表示)
  • application/x-www-form-urlencoded(使用HTTP的POST方法提交的表單)
  • multipart/form-data(同上,但主要用於表單提交時伴隨文件上傳的場合)

Android全部支持的MIME type

            sMimeTypeMap.loadEntry("application/andrew-inset", "ez");
            sMimeTypeMap.loadEntry("application/dsptype", "tsp");
            sMimeTypeMap.loadEntry("application/futuresplash", "spl");
            sMimeTypeMap.loadEntry("application/hta", "hta");
            sMimeTypeMap.loadEntry("application/mac-binhex40", "hqx");
            sMimeTypeMap.loadEntry("application/mac-compactpro", "cpt");
            sMimeTypeMap.loadEntry("application/mathematica", "nb");
            sMimeTypeMap.loadEntry("application/msaccess", "mdb");
            sMimeTypeMap.loadEntry("application/oda", "oda");
            sMimeTypeMap.loadEntry("application/ogg", "ogg");
            sMimeTypeMap.loadEntry("application/pdf", "pdf");
            sMimeTypeMap.loadEntry("application/pgp-keys", "key");
            sMimeTypeMap.loadEntry("application/pgp-signature", "pgp");
            sMimeTypeMap.loadEntry("application/pics-rules", "prf");
            sMimeTypeMap.loadEntry("application/rar", "rar");
            sMimeTypeMap.loadEntry("application/rdf+xml", "rdf");
            sMimeTypeMap.loadEntry("application/rss+xml", "rss");
            sMimeTypeMap.loadEntry("application/zip", "zip");
            sMimeTypeMap.loadEntry("application/vnd.android.package-archive", 
                    "apk");
            sMimeTypeMap.loadEntry("application/vnd.cinderella", "cdy");
            sMimeTypeMap.loadEntry("application/vnd.ms-pki.stl", "stl");
            sMimeTypeMap.loadEntry(
                    "application/vnd.oasis.opendocument.database", "odb");
            sMimeTypeMap.loadEntry(
                    "application/vnd.oasis.opendocument.formula", "odf");
            sMimeTypeMap.loadEntry(
                    "application/vnd.oasis.opendocument.graphics", "odg");
            sMimeTypeMap.loadEntry(
                    "application/vnd.oasis.opendocument.graphics-template",
                    "otg");
            sMimeTypeMap.loadEntry(
                    "application/vnd.oasis.opendocument.image", "odi");
            sMimeTypeMap.loadEntry(
                    "application/vnd.oasis.opendocument.spreadsheet", "ods");
            sMimeTypeMap.loadEntry(
                    "application/vnd.oasis.opendocument.spreadsheet-template",
                    "ots");
            sMimeTypeMap.loadEntry(
                    "application/vnd.oasis.opendocument.text", "odt");
            sMimeTypeMap.loadEntry(
                    "application/vnd.oasis.opendocument.text-master", "odm");
            sMimeTypeMap.loadEntry(
                    "application/vnd.oasis.opendocument.text-template", "ott");
            sMimeTypeMap.loadEntry(
                    "application/vnd.oasis.opendocument.text-web", "oth");
            sMimeTypeMap.loadEntry("application/msword", "doc");
            sMimeTypeMap.loadEntry("application/msword", "dot");
            sMimeTypeMap.loadEntry(
                    "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
                    "docx");
            sMimeTypeMap.loadEntry(
                    "application/vnd.openxmlformats-officedocument.wordprocessingml.template",
                    "dotx");
            sMimeTypeMap.loadEntry("application/vnd.ms-excel", "xls");
            sMimeTypeMap.loadEntry("application/vnd.ms-excel", "xlt");
            sMimeTypeMap.loadEntry(
                    "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
                    "xlsx");
            sMimeTypeMap.loadEntry(
                    "application/vnd.openxmlformats-officedocument.spreadsheetml.template",
                    "xltx");
            sMimeTypeMap.loadEntry("application/vnd.ms-powerpoint", "ppt");
            sMimeTypeMap.loadEntry("application/vnd.ms-powerpoint", "pot");
            sMimeTypeMap.loadEntry("application/vnd.ms-powerpoint", "pps");
            sMimeTypeMap.loadEntry(
                    "application/vnd.openxmlformats-officedocument.presentationml.presentation",
                    "pptx");
            sMimeTypeMap.loadEntry(
                    "application/vnd.openxmlformats-officedocument.presentationml.template",
                    "potx");
            sMimeTypeMap.loadEntry(
                    "application/vnd.openxmlformats-officedocument.presentationml.slideshow",
                    "ppsx");
            sMimeTypeMap.loadEntry("application/vnd.rim.cod", "cod");
            sMimeTypeMap.loadEntry("application/vnd.smaf", "mmf");
            sMimeTypeMap.loadEntry("application/vnd.stardivision.calc", "sdc");
            sMimeTypeMap.loadEntry("application/vnd.stardivision.draw", "sda");
            sMimeTypeMap.loadEntry(
                    "application/vnd.stardivision.impress", "sdd");
            sMimeTypeMap.loadEntry(
                    "application/vnd.stardivision.impress", "sdp");
            sMimeTypeMap.loadEntry("application/vnd.stardivision.math", "smf");
            sMimeTypeMap.loadEntry("application/vnd.stardivision.writer",
                    "sdw");
            sMimeTypeMap.loadEntry("application/vnd.stardivision.writer",
                    "vor");
            sMimeTypeMap.loadEntry(
                    "application/vnd.stardivision.writer-global", "sgl");
            sMimeTypeMap.loadEntry("application/vnd.sun.xml.calc", "sxc");
            sMimeTypeMap.loadEntry(
                    "application/vnd.sun.xml.calc.template", "stc");
            sMimeTypeMap.loadEntry("application/vnd.sun.xml.draw", "sxd");
            sMimeTypeMap.loadEntry(
                    "application/vnd.sun.xml.draw.template", "std");
            sMimeTypeMap.loadEntry("application/vnd.sun.xml.impress", "sxi");
            sMimeTypeMap.loadEntry(
                    "application/vnd.sun.xml.impress.template", "sti");
            sMimeTypeMap.loadEntry("application/vnd.sun.xml.math", "sxm");
            sMimeTypeMap.loadEntry("application/vnd.sun.xml.writer", "sxw");
            sMimeTypeMap.loadEntry(
                    "application/vnd.sun.xml.writer.global", "sxg");
            sMimeTypeMap.loadEntry(
                    "application/vnd.sun.xml.writer.template", "stw");
            sMimeTypeMap.loadEntry("application/vnd.visio", "vsd");
            sMimeTypeMap.loadEntry("application/x-abiword", "abw");
            sMimeTypeMap.loadEntry("application/x-apple-diskimage", "dmg");
            sMimeTypeMap.loadEntry("application/x-bcpio", "bcpio");
            sMimeTypeMap.loadEntry("application/x-bittorrent", "torrent");
            sMimeTypeMap.loadEntry("application/x-cdf", "cdf");
            sMimeTypeMap.loadEntry("application/x-cdlink", "vcd");
            sMimeTypeMap.loadEntry("application/x-chess-pgn", "pgn");
            sMimeTypeMap.loadEntry("application/x-cpio", "cpio");
            sMimeTypeMap.loadEntry("application/x-debian-package", "deb");
            sMimeTypeMap.loadEntry("application/x-debian-package", "udeb");
            sMimeTypeMap.loadEntry("application/x-director", "dcr");
            sMimeTypeMap.loadEntry("application/x-director", "dir");
            sMimeTypeMap.loadEntry("application/x-director", "dxr");
            sMimeTypeMap.loadEntry("application/x-dms", "dms");
            sMimeTypeMap.loadEntry("application/x-doom", "wad");
            sMimeTypeMap.loadEntry("application/x-dvi", "dvi");
            sMimeTypeMap.loadEntry("application/x-flac", "flac");
            sMimeTypeMap.loadEntry("application/x-font", "pfa");
            sMimeTypeMap.loadEntry("application/x-font", "pfb");
            sMimeTypeMap.loadEntry("application/x-font", "gsf");
            sMimeTypeMap.loadEntry("application/x-font", "pcf");
            sMimeTypeMap.loadEntry("application/x-font", "pcf.Z");
            sMimeTypeMap.loadEntry("application/x-freemind", "mm");
            sMimeTypeMap.loadEntry("application/x-futuresplash", "spl");
            sMimeTypeMap.loadEntry("application/x-gnumeric", "gnumeric");
            sMimeTypeMap.loadEntry("application/x-go-sgf", "sgf");
            sMimeTypeMap.loadEntry("application/x-graphing-calculator", "gcf");
            sMimeTypeMap.loadEntry("application/x-gtar", "gtar");
            sMimeTypeMap.loadEntry("application/x-gtar", "tgz");
            sMimeTypeMap.loadEntry("application/x-gtar", "taz");
            sMimeTypeMap.loadEntry("application/x-hdf", "hdf");
            sMimeTypeMap.loadEntry("application/x-ica", "ica");
            sMimeTypeMap.loadEntry("application/x-internet-signup", "ins");
            sMimeTypeMap.loadEntry("application/x-internet-signup", "isp");
            sMimeTypeMap.loadEntry("application/x-iphone", "iii");
            sMimeTypeMap.loadEntry("application/x-iso9660-image", "iso");
            sMimeTypeMap.loadEntry("application/x-jmol", "jmz");
            sMimeTypeMap.loadEntry("application/x-kchart", "chrt");
            sMimeTypeMap.loadEntry("application/x-killustrator", "kil");
            sMimeTypeMap.loadEntry("application/x-koan", "skp");
            sMimeTypeMap.loadEntry("application/x-koan", "skd");
            sMimeTypeMap.loadEntry("application/x-koan", "skt");
            sMimeTypeMap.loadEntry("application/x-koan", "skm");
            sMimeTypeMap.loadEntry("application/x-kpresenter", "kpr");
            sMimeTypeMap.loadEntry("application/x-kpresenter", "kpt");
            sMimeTypeMap.loadEntry("application/x-kspread", "ksp");
            sMimeTypeMap.loadEntry("application/x-kword", "kwd");
            sMimeTypeMap.loadEntry("application/x-kword", "kwt");
            sMimeTypeMap.loadEntry("application/x-latex", "latex");
            sMimeTypeMap.loadEntry("application/x-lha", "lha");
            sMimeTypeMap.loadEntry("application/x-lzh", "lzh");
            sMimeTypeMap.loadEntry("application/x-lzx", "lzx");
            sMimeTypeMap.loadEntry("application/x-maker", "frm");
            sMimeTypeMap.loadEntry("application/x-maker", "maker");
            sMimeTypeMap.loadEntry("application/x-maker", "frame");
            sMimeTypeMap.loadEntry("application/x-maker", "fb");
            sMimeTypeMap.loadEntry("application/x-maker", "book");
            sMimeTypeMap.loadEntry("application/x-maker", "fbdoc");
            sMimeTypeMap.loadEntry("application/x-mif", "mif");
            sMimeTypeMap.loadEntry("application/x-ms-wmd", "wmd");
            sMimeTypeMap.loadEntry("application/x-ms-wmz", "wmz");
            sMimeTypeMap.loadEntry("application/x-msi", "msi");
            sMimeTypeMap.loadEntry("application/x-ns-proxy-autoconfig", "pac");
            sMimeTypeMap.loadEntry("application/x-nwc", "nwc");
            sMimeTypeMap.loadEntry("application/x-object", "o");
            sMimeTypeMap.loadEntry("application/x-oz-application", "oza");
            sMimeTypeMap.loadEntry("application/x-pkcs12", "p12");
            sMimeTypeMap.loadEntry("application/x-pkcs7-certreqresp", "p7r");
            sMimeTypeMap.loadEntry("application/x-pkcs7-crl", "crl");
            sMimeTypeMap.loadEntry("application/x-quicktimeplayer", "qtl");
            sMimeTypeMap.loadEntry("application/x-shar", "shar");
            sMimeTypeMap.loadEntry("application/x-shockwave-flash", "swf");
            sMimeTypeMap.loadEntry("application/x-stuffit", "sit");
            sMimeTypeMap.loadEntry("application/x-sv4cpio", "sv4cpio");
            sMimeTypeMap.loadEntry("application/x-sv4crc", "sv4crc");
            sMimeTypeMap.loadEntry("application/x-tar", "tar");
            sMimeTypeMap.loadEntry("application/x-texinfo", "texinfo");
            sMimeTypeMap.loadEntry("application/x-texinfo", "texi");
            sMimeTypeMap.loadEntry("application/x-troff", "t");
            sMimeTypeMap.loadEntry("application/x-troff", "roff");
            sMimeTypeMap.loadEntry("application/x-troff-man", "man");
            sMimeTypeMap.loadEntry("application/x-ustar", "ustar");
            sMimeTypeMap.loadEntry("application/x-wais-source", "src");
            sMimeTypeMap.loadEntry("application/x-wingz", "wz");
            sMimeTypeMap.loadEntry("application/x-webarchive", "webarchive");
            sMimeTypeMap.loadEntry("application/x-x509-ca-cert", "crt");
            sMimeTypeMap.loadEntry("application/x-x509-user-cert", "crt");
            sMimeTypeMap.loadEntry("application/x-xcf", "xcf");
            sMimeTypeMap.loadEntry("application/x-xfig", "fig");
            sMimeTypeMap.loadEntry("application/xhtml+xml", "xhtml");
            sMimeTypeMap.loadEntry("audio/3gpp", "3gpp");
            sMimeTypeMap.loadEntry("audio/basic", "snd");
            sMimeTypeMap.loadEntry("audio/midi", "mid");
            sMimeTypeMap.loadEntry("audio/midi", "midi");
            sMimeTypeMap.loadEntry("audio/midi", "kar");
            sMimeTypeMap.loadEntry("audio/mpeg", "mpga");
            sMimeTypeMap.loadEntry("audio/mpeg", "mpega");
            sMimeTypeMap.loadEntry("audio/mpeg", "mp2");
            sMimeTypeMap.loadEntry("audio/mpeg", "mp3");
            sMimeTypeMap.loadEntry("audio/mpeg", "m4a");
            sMimeTypeMap.loadEntry("audio/mpegurl", "m3u");
            sMimeTypeMap.loadEntry("audio/prs.sid", "sid");
            sMimeTypeMap.loadEntry("audio/x-aiff", "aif");
            sMimeTypeMap.loadEntry("audio/x-aiff", "aiff");
            sMimeTypeMap.loadEntry("audio/x-aiff", "aifc");
            sMimeTypeMap.loadEntry("audio/x-gsm", "gsm");
            sMimeTypeMap.loadEntry("audio/x-mpegurl", "m3u");
            sMimeTypeMap.loadEntry("audio/x-ms-wma", "wma");
            sMimeTypeMap.loadEntry("audio/x-ms-wax", "wax");
            sMimeTypeMap.loadEntry("audio/x-pn-realaudio", "ra");
            sMimeTypeMap.loadEntry("audio/x-pn-realaudio", "rm");
            sMimeTypeMap.loadEntry("audio/x-pn-realaudio", "ram");
            sMimeTypeMap.loadEntry("audio/x-realaudio", "ra");
            sMimeTypeMap.loadEntry("audio/x-scpls", "pls");
            sMimeTypeMap.loadEntry("audio/x-sd2", "sd2");
            sMimeTypeMap.loadEntry("audio/x-wav", "wav");
            sMimeTypeMap.loadEntry("image/bmp", "bmp");
            sMimeTypeMap.loadEntry("image/gif", "gif");
            sMimeTypeMap.loadEntry("image/ico", "cur");
            sMimeTypeMap.loadEntry("image/ico", "ico");
            sMimeTypeMap.loadEntry("image/ief", "ief");
            sMimeTypeMap.loadEntry("image/jpeg", "jpeg");
            sMimeTypeMap.loadEntry("image/jpeg", "jpg");
            sMimeTypeMap.loadEntry("image/jpeg", "jpe");
            sMimeTypeMap.loadEntry("image/pcx", "pcx");
            sMimeTypeMap.loadEntry("image/png", "png");
            sMimeTypeMap.loadEntry("image/svg+xml", "svg");
            sMimeTypeMap.loadEntry("image/svg+xml", "svgz");
            sMimeTypeMap.loadEntry("image/tiff", "tiff");
            sMimeTypeMap.loadEntry("image/tiff", "tif");
            sMimeTypeMap.loadEntry("image/vnd.djvu", "djvu");
            sMimeTypeMap.loadEntry("image/vnd.djvu", "djv");
            sMimeTypeMap.loadEntry("image/vnd.wap.wbmp", "wbmp");
            sMimeTypeMap.loadEntry("image/x-cmu-raster", "ras");
            sMimeTypeMap.loadEntry("image/x-coreldraw", "cdr");
            sMimeTypeMap.loadEntry("image/x-coreldrawpattern", "pat");
            sMimeTypeMap.loadEntry("image/x-coreldrawtemplate", "cdt");
            sMimeTypeMap.loadEntry("image/x-corelphotopaint", "cpt");
            sMimeTypeMap.loadEntry("image/x-icon", "ico");
            sMimeTypeMap.loadEntry("image/x-jg", "art");
            sMimeTypeMap.loadEntry("image/x-jng", "jng");
            sMimeTypeMap.loadEntry("image/x-ms-bmp", "bmp");
            sMimeTypeMap.loadEntry("image/x-photoshop", "psd");
            sMimeTypeMap.loadEntry("image/x-portable-anymap", "pnm");
            sMimeTypeMap.loadEntry("image/x-portable-bitmap", "pbm");
            sMimeTypeMap.loadEntry("image/x-portable-graymap", "pgm");
            sMimeTypeMap.loadEntry("image/x-portable-pixmap", "ppm");
            sMimeTypeMap.loadEntry("image/x-rgb", "rgb");
            sMimeTypeMap.loadEntry("image/x-xbitmap", "xbm");
            sMimeTypeMap.loadEntry("image/x-xpixmap", "xpm");
            sMimeTypeMap.loadEntry("image/x-xwindowdump", "xwd");
            sMimeTypeMap.loadEntry("model/iges", "igs");
            sMimeTypeMap.loadEntry("model/iges", "iges");
            sMimeTypeMap.loadEntry("model/mesh", "msh");
            sMimeTypeMap.loadEntry("model/mesh", "mesh");
            sMimeTypeMap.loadEntry("model/mesh", "silo");
            sMimeTypeMap.loadEntry("text/calendar", "ics");
            sMimeTypeMap.loadEntry("text/calendar", "icz");
            sMimeTypeMap.loadEntry("text/comma-separated-values", "csv");
            sMimeTypeMap.loadEntry("text/css", "css");
            sMimeTypeMap.loadEntry("text/html", "htm");
            sMimeTypeMap.loadEntry("text/html", "html");
            sMimeTypeMap.loadEntry("text/h323", "323");
            sMimeTypeMap.loadEntry("text/iuls", "uls");
            sMimeTypeMap.loadEntry("text/mathml", "mml");
            // add it first so it will be the default for ExtensionFromMimeType
            sMimeTypeMap.loadEntry("text/plain", "txt");
            sMimeTypeMap.loadEntry("text/plain", "asc");
            sMimeTypeMap.loadEntry("text/plain", "text");
            sMimeTypeMap.loadEntry("text/plain", "diff");
            sMimeTypeMap.loadEntry("text/plain", "po");     // reserve "pot" for vnd.ms-powerpoint
            sMimeTypeMap.loadEntry("text/richtext", "rtx");
            sMimeTypeMap.loadEntry("text/rtf", "rtf");
            sMimeTypeMap.loadEntry("text/texmacs", "ts");
            sMimeTypeMap.loadEntry("text/text", "phps");
            sMimeTypeMap.loadEntry("text/tab-separated-values", "tsv");
            sMimeTypeMap.loadEntry("text/xml", "xml");
            sMimeTypeMap.loadEntry("text/x-bibtex", "bib");
            sMimeTypeMap.loadEntry("text/x-boo", "boo");
            sMimeTypeMap.loadEntry("text/x-c++hdr", "h++");
            sMimeTypeMap.loadEntry("text/x-c++hdr", "hpp");
            sMimeTypeMap.loadEntry("text/x-c++hdr", "hxx");
            sMimeTypeMap.loadEntry("text/x-c++hdr", "hh");
            sMimeTypeMap.loadEntry("text/x-c++src", "c++");
            sMimeTypeMap.loadEntry("text/x-c++src", "cpp");
            sMimeTypeMap.loadEntry("text/x-c++src", "cxx");
            sMimeTypeMap.loadEntry("text/x-chdr", "h");
            sMimeTypeMap.loadEntry("text/x-component", "htc");
            sMimeTypeMap.loadEntry("text/x-csh", "csh");
            sMimeTypeMap.loadEntry("text/x-csrc", "c");
            sMimeTypeMap.loadEntry("text/x-dsrc", "d");
            sMimeTypeMap.loadEntry("text/x-haskell", "hs");
            sMimeTypeMap.loadEntry("text/x-java", "java");
            sMimeTypeMap.loadEntry("text/x-literate-haskell", "lhs");
            sMimeTypeMap.loadEntry("text/x-moc", "moc");
            sMimeTypeMap.loadEntry("text/x-pascal", "p");
            sMimeTypeMap.loadEntry("text/x-pascal", "pas");
            sMimeTypeMap.loadEntry("text/x-pcs-gcd", "gcd");
            sMimeTypeMap.loadEntry("text/x-setext", "etx");
            sMimeTypeMap.loadEntry("text/x-tcl", "tcl");
            sMimeTypeMap.loadEntry("text/x-tex", "tex");
            sMimeTypeMap.loadEntry("text/x-tex", "ltx");
            sMimeTypeMap.loadEntry("text/x-tex", "sty");
            sMimeTypeMap.loadEntry("text/x-tex", "cls");
            sMimeTypeMap.loadEntry("text/x-vcalendar", "vcs");
            sMimeTypeMap.loadEntry("text/x-vcard", "vcf");
            sMimeTypeMap.loadEntry("video/3gpp", "3gpp");
            sMimeTypeMap.loadEntry("video/3gpp", "3gp");
            sMimeTypeMap.loadEntry("video/3gpp", "3g2");
            sMimeTypeMap.loadEntry("video/dl", "dl");
            sMimeTypeMap.loadEntry("video/dv", "dif");
            sMimeTypeMap.loadEntry("video/dv", "dv");
            sMimeTypeMap.loadEntry("video/fli", "fli");
            sMimeTypeMap.loadEntry("video/m4v", "m4v");
            sMimeTypeMap.loadEntry("video/mpeg", "mpeg");
            sMimeTypeMap.loadEntry("video/mpeg", "mpg");
            sMimeTypeMap.loadEntry("video/mpeg", "mpe");
            sMimeTypeMap.loadEntry("video/mp4", "mp4");
            sMimeTypeMap.loadEntry("video/mpeg", "VOB");
            sMimeTypeMap.loadEntry("video/quicktime", "qt");
            sMimeTypeMap.loadEntry("video/quicktime", "mov");
            sMimeTypeMap.loadEntry("video/vnd.mpegurl", "mxu");
            sMimeTypeMap.loadEntry("video/x-la-asf", "lsf");
            sMimeTypeMap.loadEntry("video/x-la-asf", "lsx");
            sMimeTypeMap.loadEntry("video/x-mng", "mng");
            sMimeTypeMap.loadEntry("video/x-ms-asf", "asf");
            sMimeTypeMap.loadEntry("video/x-ms-asf", "asx");
            sMimeTypeMap.loadEntry("video/x-ms-wm", "wm");
            sMimeTypeMap.loadEntry("video/x-ms-wmv", "wmv");
            sMimeTypeMap.loadEntry("video/x-ms-wmx", "wmx");
            sMimeTypeMap.loadEntry("video/x-ms-wvx", "wvx");
            sMimeTypeMap.loadEntry("video/x-msvideo", "avi");
            sMimeTypeMap.loadEntry("video/x-sgi-movie", "movie");
            sMimeTypeMap.loadEntry("x-conference/x-cooltalk", "ice");
            sMimeTypeMap.loadEntry("x-epoc/x-sisx-app", "sisx");

上面是發送內容給其餘的應用程序,接下來咱們分享從其餘的應用接收內容用來顯示,謝謝你們的關注!

以前給你們分享了你開發的應用程序給其餘應用程序分享內容,想了解的朋友點擊:Android 應用程序之間內容分享詳解(一)今天分享的是從其餘的應用程序接收內容,好比你開發了一個社交網絡的應用,你其中的某個Activity能夠接受人們從其餘的應用分享的東西,例如分享文字或者從圖庫分享圖片等等,接下來咱們利用一個例子來說解從其餘的應用接受內容

1.咱們新建一個Android工程,名字爲SharedContext,修改Manifest文件

咱們須要在Manifest文件中定義這個Activity能接收什麼樣的Intent,咱們須要建立Intent過濾器,使用 <intent-filter> 元素來過濾咱們能接收的Intent,下面咱們舉個簡單的例子,相信你們知道觸類旁通,下面的例子咱們的應用程序能夠處理文本,文本文件,單一的圖片和多張圖片,咱們定義Manifest文件以下

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.sharedcontext"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="16" />
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.sharedcontext.MainActivity"
            android:label="@string/app_name" >
            
            <!-- 應用程序的啓動 Intent,咱們例子只有一個Activity-->
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>

            <!-- 處理文字的Intent 咱們須要定義action,  category, 和文字對應的MIME -->
            <intent-filter>
                <action android:name="android.intent.action.SEND" />
                <category android:name="android.intent.category.DEFAULT" />
                <data android:mimeType="text/*" />
            </intent-filter>

            <!-- 處理單張圖片的Intent -->
            <intent-filter>
                <action android:name="android.intent.action.SEND" />
                <category android:name="android.intent.category.DEFAULT" />
                <data android:mimeType="image/*" />
            </intent-filter>

            <!-- 處理多張圖片的Intent -->
            <intent-filter>
                <action android:name="android.intent.action.SEND_MULTIPLE" />
                <category android:name="android.intent.category.DEFAULT" />
                <data android:mimeType="image/*" />
            </intent-filter>
        </activity>
    </application
</manifest>

當一個應用程序構建上面那樣子的Intent,並吧它傳遞給StartActivity(),咱們的應用程序就會被列在Intent選擇器中,當用戶選擇該應用程序就進入相對應的Activity(上面的例子是MainActivity),咱們只須要在MainActivity處理這樣內容並用相對應的UI顯示,  MainActivity以下
package com.example.sharedcontext;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		Intent intent = getIntent();
		//得到Intent的Action
		String action = intent.getAction();
		//得到Intent的MIME type
		String type = intent.getType();
		
		
		if(Intent.ACTION_SEND.equals(action) && type != null){
			//咱們這裏處理全部的文本類型
			if(type.startsWith("text/")){
				//處理獲取到的文本,這裏咱們用TextView顯示
				handleSendText(intent);
			}
			//圖片的MIME type有 image/png , image/jepg, image/gif 等,
			else if(type.startsWith("image/")){
				//處理獲取到圖片,咱們用ImageView顯示
				handleSendImage(intent);
			}
		}
		else if(Intent.ACTION_SEND_MULTIPLE.equals(action) && type != null){
			 if (type.startsWith("image/")) {
				 	//處理多張圖片,咱們用一個GridView來顯示
		            handleSendMultipleImages(intent); 
		        }
		}
	}


	/**
	 * 用TextView顯示文本
	 * 能夠打開通常的文本文件
	 * @param intent
	 */
	private void handleSendText(Intent intent){
		 TextView textView = new TextView(this);
		 
		 //通常的文本處理,咱們直接顯示字符串
		 String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
		 if(sharedText != null){
			 textView.setText(sharedText);
		 }
		 
		 
		 //文本文件處理,從Uri中獲取輸入流,而後將輸入流轉換成字符串
		 Uri textUri = (Uri) intent.getParcelableExtra(Intent.EXTRA_STREAM);
		 if(textUri != null){
			 try {
				 InputStream inputStream = this.getContentResolver().openInputStream(textUri);
				 textView.setText(inputStream2Byte(inputStream));
			} catch (Exception e) {
				e.printStackTrace();
			}
		 }
		
		 //設置給Activity
		 setContentView(textView);
	}
	
	
	/**
	 * 將輸入流轉換成字符串
	 * @param inputStream
	 * @return
	 * @throws IOException
	 */
	private String inputStream2Byte(InputStream inputStream) throws IOException{
		ByteArrayOutputStream bos = new ByteArrayOutputStream();
		
		byte [] buffer = new byte[1024];
		int len = -1;
		
		while((len = inputStream.read(buffer)) != -1){
			bos.write(buffer, 0, len);
		}
		
		bos.close();
		
		//指定編碼格式爲UIT-8
		return new String(bos.toByteArray(), "UTF-8");
	}
	
	
	/**
	 * 用ImageView顯示單張圖片
	 * @param intent
	 */
	private void handleSendImage(Intent intent) {
	    Uri imageUri = (Uri) intent.getParcelableExtra(Intent.EXTRA_STREAM);
	    if (imageUri != null) {
	    	ImageView imageView = new ImageView(this);
	    	imageView.setImageURI(imageUri);
	    	setContentView(imageView);
	    }
	}
	
	
	/**
	 * 用GridView顯示多張圖片
	 * @param intent
	 */
	private void handleSendMultipleImages(Intent intent) {
	    final ArrayList<Uri> imageUris = intent.getParcelableArrayListExtra(Intent.EXTRA_STREAM);
	    if (imageUris != null) {
	    	GridView gridView = new GridView(this);
	    	//設置item的寬度
	    	gridView.setColumnWidth(130);
	    	//設置列爲自動適應
	    	gridView.setNumColumns(GridView.AUTO_FIT);
	    	gridView.setAdapter(new GridAdapter(this, imageUris));
	    	setContentView(gridView);
	    	
	    	gridView.setOnItemClickListener(new OnItemClickListener() {

				@Override
				public void onItemClick(AdapterView<?> parent, View view,
						final int position, long id) {
					
					//點擊GridView的item 能夠分享圖片給其餘應用
					//這裏能夠參考http://blog.csdn.net/xiaanming/article/details/9395991
					Intent intent = new Intent();
					intent.setAction(Intent.ACTION_SEND);
					intent.putExtra(Intent.EXTRA_STREAM, imageUris.get(position));
					intent.setType("image/*");
					startActivity(Intent.createChooser(intent, "共享圖片"));
				}
			});
	    	
	    }
	}
	
	/**
	 * 重寫BaseAdapter
	 * @author xiaanming
	 *
	 */
	public class GridAdapter extends BaseAdapter{
		private Context mContext;
		private ArrayList<Uri> list;
		
		public GridAdapter(Context mContext, ArrayList<Uri> list){
			this.list = list;
			this.mContext = mContext;
		}

		@Override
		public int getCount() {
			return list.size();
		}

		@Override
		public Object getItem(int position) {
			return list.get(position);
		}

		@Override
		public long getItemId(int position) {
			return position;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			ImageView imageView;
			if(convertView == null){
				imageView = new ImageView(mContext);
				imageView.setPadding(8, 8, 8, 8);
			}else{
				imageView = (ImageView) convertView;
			}
			imageView.setImageURI(list.get(position));
			return imageView;
		}
	}
}

運行程序以後,而後咱們選擇系統圖庫,選擇多張圖片(如圖一)進行分享,咱們本身的應用程序分享多張界面(如圖二)點擊咱們應用程序的item,選擇分享單張圖片(如圖三)咱們繼續選擇咱們本身的應用程序來顯示(如圖四),新建一個備忘錄保存,長按備忘錄進行分享(如圖五),分享文本文件的顯示界面(如圖六)
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