http://blog.csdn.net/wangyang2698341/article/details/20847469
http://blog.csdn.net/baidu_34260638/article/details/53120737?locationNum=4&fps=1
工具代码
private void lookMtl(String Dname,String DdownPath,String format) {
String path= Environment.getExternalStorageDirectory().getAbsolutePath()
+ File.separator +"RZXT/"+item_no+"/down/";
if(FileUtils.isFileExist(path+Dname)){
//文件存在，使用本地软件打开
// Log.i(TAG,Dname+"文件存在");
// Uri uri = Uri.parse(path+Dname);
// Intent intent = new Intent(Intent.ACTION_VIEW);
// intent.setDataAndType(uri, "*/*");
File file = new File(path+Dname);
Intent intent = new Intent("android.intent.action.VIEW");
intent.addCategory("android.intent.category.DEFAULT");
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
Uri uri = Uri.fromFile(file);
if(format.equals("1")){
// sMimeTypeMap.loadEntry("application/msword", "doc");
// intent.setDataAndType(uri, "application/vnd.openxmlformats-officedocument.wordprocessingml.document");
intent.setDataAndType(uri, "application/msword");
}
else if(format.equals("2")){
intent.setDataAndType(uri, "application/pdf");
}
else if(format.equals("3")){
intent.setDataAndType(uri, "application/vnd.ms-excel");
}
else if(format.equals("4")){
intent.setDataAndType(uri, "image/*");
}
else if(format.equals("5")){
intent.setDataAndType(uri, "application/rar");
}
else if(format.equals("6")){
intent.setDataAndType(uri, "text/plain");
}
else {
intent.setDataAndType(uri, "*/*");
}
startActivity(intent);
}
else {
//文件不存在，创建文件目录并下载
Log.i(TAG,Dname+"文件不存在");
try {
File file= FileUtils.createSDDir(path);
} catch (IOException e) {
e.printStackTrace();
}
downloadFile(URL,Dname,path,DdownPath,format);
}
}
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”},
{“”, “/“}
};