Android实现打开本地文件,Android 打开本地文件(示例代码)

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Android 打开本地的文件，目前来说，其实很常见。而且现在有手机版的office了。查看office的全家桶就更加方便。

首先要知道的是，Android 打开本地文件是根据类型打开的，也就是根据文件的 MIME 类型来确定

如果不知道是什么类型，那就是 ： */*

类型匹配表：

private static 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"},

{".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"},

{".prop", "text/plain"},

{".rar", "application/x-rar-compressed"},

{".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/xml"},

{".xml", "text/plain"},

{".z", "application/x-compress"},

{".zip", "application/zip"},

{"", "*/*"}

};

获取文件的类型。

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 fileType = fName.substring(dotIndex,fName.length()).toLowerCase();

if(fileType == null || "".equals(fileType))

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

if(fileType.equals(MIME_MapTable[i][0]))

type = MIME_MapTable[i][1];

}

return type;

}

打开文件

Intent intent = new Intent();

File file = new File(FileDirectory);

intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);//设置标记

intent.setAction(Intent.ACTION_VIEW);//动作，查看

intent.setDataAndType(Uri.fromFile(file), getMIMEType(file));//设置类型

context.startActivity(intent);

本文标签： 本地文件 示例 代码 Android