Android中调用系统所装的软件打开文件(转)
在应用中如何调用系统所装的软件打开一个文件,这是我们经常碰到的问题,下面是我所用到的一种方法,和大家一起分享一下!
这个是打开文件的一个方法:
- /**
- * 打开文件
- * @param file
- */
- private void openFile(File file){
- Intent intent = new Intent();
- intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
- //设置intent的Action属性
- intent.setAction(Intent.ACTION_VIEW);
- //获取文件file的MIME类型
- String type = getMIMEType(file);
- //设置intent的data和Type属性。
- intent.setDataAndType(/*uri*/Uri.fromFile(file), type);
- //跳转
- startActivity(intent);
- }
- /**
- * 根据文件后缀名获得对应的MIME类型。
- * @param file
- */
- private 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和文件类型的匹配表中找到对应的MIME类型。
- for(int i=0;i<MIME_MapTable.length;i++){ //MIME_MapTable??在这里你一定有疑问,这个MIME_MapTable是什么?
- if(end.equals(MIME_MapTable[i][0]))
- type = MIME_MapTable[i][1];
- }
- return type;
- }
MIME_MapTable是所有文件的后缀名所对应的MIME类型的一个String数组:
- private final String[][] MIME_MapTable={
- //{后缀名, MIME类型}
- {".3gp", "video/3gpp"},
- {".apk", "application/vnd.android.package-archive"},
- {".asf", "video/x-ms-asf"},
- {".avi", "video/x-msvideo"},
- {".bin", "application/octet-stream"},
- {".bmp", "image/bmp"},
- {".c", "text/plain"},
- {".class", "application/octet-stream"},
- {".conf", "text/plain"},
- {".cpp", "text/plain"},
- {".doc", "application/msword"},
- {".docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document"},
- {".xls", "application/vnd.ms-excel"},
- {".xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"},
- {".exe", "application/octet-stream"},
- {".gif", "image/gif"},
- {".gtar", "application/x-gtar"},
- {".gz", "application/x-gzip"},
- {".h", "text/plain"},
- {".htm", "text/html"},
- {".html", "text/html"},
- {".jar", "application/java-archive"},
- {".java", "text/plain"},
- {".jpeg", "image/jpeg"},
- {".jpg", "image/jpeg"},
- {".js", "application/x-javascript"},
- {".log", "text/plain"},
- {".m3u", "audio/x-mpegurl"},
- {".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"},
- {".ogg", "audio/ogg"},
- {".pdf", "application/pdf"},
- {".png", "image/png"},
- {".pps", "application/vnd.ms-powerpoint"},
- {".ppt", "application/vnd.ms-powerpoint"},
- {".pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation"},
- {".prop", "text/plain"},
- {".rc", "text/plain"},
- {".rmvb", "audio/x-pn-realaudio"},
- {".rtf", "application/rtf"},
- {".sh", "text/plain"},
- {".tar", "application/x-tar"},
- {".tgz", "application/x-compressed"},
- {".txt", "text/plain"},
- {".wav", "audio/x-wav"},
- {".wma", "audio/x-ms-wma"},
- {".wmv", "audio/x-ms-wmv"},
- {".wps", "application/vnd.ms-works"},
- {".xml", "text/plain"},
- {".z", "application/x-compress"},
- {".zip", "application/x-zip-compressed"},
- {"", "*/*"}
- };
这个MIME类型可能不够完整,你有要补充的吗?
原文:http://tonysun3544.iteye.com/blog/1265884