Android（java）学习笔记143：android提供打开各种文件的API接口：setDataAndType

1. Android 打开各种文件（setDataAndType）

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);     //这里最好try一下，有可能会报错。 //比如说你的MIME类型是打开邮箱，但是你手机里面没装邮箱客户端，就会报错。



}

/**

 * 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：

  <span style="white-space: pre;">    </span>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"},

            {"",        "*/*"}

        };

1. Intent open a picture file public:

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(new File("/mnt/sdcard/images/001041580.jpg"));

intent.setDataAndType (uri, "image/*");

this.startActivity(intent);

2. Intent to open a PDF file:

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(new File("file:///android_asset/helphelp.pdf"));

intent.setDataAndType (uri, "application/pdf");

this.startActivity(intent);

3. Intent to open a text file:

Intent intent = new Intent("android.intent.action.VIEW");

intent.addCategory("android.intent.category.DEFAULT");

intent.addFlags (Intent.FLAG_ACTIVITY_NEW_TASK);

if (paramBoolean)

{

Uri uri1 = Uri.parse (param);

intent.setDataAndType (URI1, "text/plain");

}

else

{

Uri uri = Uri.fromFile(new File("/mnt/sdcard/hello.txt"));

intent.setDataAndType (URI2, "text/plain");

}

this.startActivity(intent);

4. Intent to open the audio file:

Intent intent = new Intent("android.intent.action.VIEW");

intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

intent.putExtra ("oneshot", 0);

intent.putExtra ("configchange", 0);

Uri uri = Uri.fromFile(new File("/mnt/sdcard/ren.mp3"));

intent.setDataAndType (uri, "audio/*");

this.startActivity(intent);

5. Intent to open the video file:

Intent intent = new Intent("android.intent.action.VIEW");

intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

intent.putExtra ("oneshot", 0);

intent.putExtra ("configchange", 0);

Uri uri = Uri.fromFile(new File("/mnt/sdcard/ice.avi"));

intent.setDataAndType (uri, "video/*");

this.startActivity(intent);

6. Intent to open the CHM file:

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(new File("/mnt/sdcard/ice.chm"));

intent.setDataAndType (uri, "application / x-chm");

this.startActivity(intent);

7. Intent to open a Word document:

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(new File("/system/etc/help.doc"));

intent.setDataAndType(uri, "application/msword");

this.startActivity(intent);

8. Android Excel intent:

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(new File("/mnt/sdcard/Book1.xls"));

intent.setDataAndType (uri, "application/vnd.ms-excel");

this.startActivity(intent);

9. Intent to open the PPT file:

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(new

File("/mnt/sdcard/download/Android_PPT.ppt"));

intent.setDataAndType (uri, "application/vnd.ms-powerpoint");

this.startActivity(intent);

10.Display Html page:

Uri uri = Uri.parse ("http://www.google.com");

Intent intent = new Intent (Intent.ACTION_VIEW, uri);

this.startActivity(intent);

11. Show map:

Uri uri = Uri.parse ("geo: 38.899533, -77.036476");

Intent intent = new Intent (Intent.Action_VIEW, uri);

this.startActivity(intent);

12. Call the dialer:

Uri uri = Uri.parse ("tel: xxxxxx");

Intent intent = new Intent (Intent.ACTION_DIAL, uri);

this.startActivity(intent);

13. Call :

Uri uri = Uri.parse ("tel: xxxxxx");

Intent it = new Intent (Intent.ACTION_CALL, uri);

this.startActivity(intent);

/*permission:

<uses-permission id="android.permission.CALL_PHONE">

</uses-permission> */

14. Call to send text messages of the program :

Intent intent = new Intent (Intent.ACTION_VIEW);

intent.putExtra("sms_body", "The SMS text");

intent.setType("vnd.android-dir/mms-sms");

this.startActivity(intent);

15. Send SMS :

Uri uri = Uri.parse("smsto:0800000123");

Intent intent = new Intent(Intent.ACTION_SENDTO, uri);

intent.putExtra("sms_body", "The SMS text");

this.startActivity(intent);

16. Send MMS :

Uri uri = Uri.parse("content://media/external/images/media/23");
Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra("sms_body", "some text");
intent.putExtra(Intent.EXTRA_STREAM, uri);
intent.setType("image/png");
this.startActivity(intent);

17. Send an Email :

Uri uri = Uri.parse ("mailto: xxx@abc.com");
Intent intent = new Intent (Intent.ACTION_SENDTO, uri);
this.startActivity(intent);

18. Send an Email with body :

Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_EMAIL,"me@abc.com");
intent.putExtra(Intent.EXTRA_TEXT,"The email body text");
intent.setType ("text/plain");
this.startActivity(
Intent.createChooser(intent, "Choose Email Client"));

19. Send an Email with body,to,cc :

Intent intent = new Intent(Intent.ACTION_SEND);
String [] tos ={"me@abc.com"};
String [] ccs ={"you@abc.com"};
intent.putExtra(Intent.EXTRA_EMAIL, tos);
intent.putExtra(Intent.EXTRA_CC, ccs);
intent.putExtra(Intent.EXTRA_TEXT, "The email body text");
intent.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
intent.setType("message/rfc822");
this.startActivity(
Intent.createChooser(intent, "Choose Email Client"));

20. Send an Email with attachments :

Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_SUBJECT,"The email subject text");
intent.putExtra(Intent.EXTRA_STREAM,"file :///sdcard/mysong.mp3");
sendIntent.setType("audio/mp3");
this.startActivity(
Intent.createChooser(intent,"Choose Email Client"));

21. Uninstall the program :

Uri uri = Uri.fromParts ("package", strPackageName, null);
Intent intent = new Intent (Intent.ACTION_DELETE, uri);
this.startActivity(
Intent.createChooser(intent,"Choose Email Client"));

22. Install the apk :

Uri installUri = Uri.fromParts("package", "xxx", null);
returnIt = new Intent(Intent.ACTION_PACKAGE_ADDED, installUri);
this.startActivity(returnIt);

23. Search applications :

Uri uri = Uri.parse("market://search?Q=pname:pkg_name");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
this.startActivity(intent);
//Where pkg_name is the full package path for an application

24. Google Search Launch Web Browser :

Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
String term = "Android";
intent.putExtra(SearchManager.QUERY, term);
activity.startActivity(intent);

25. Send text using Intent (to messaging apps) :

Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
String msgBody = "This is message";
Intent intent = new Intent(android.content.Intent.ACTION_SEND);
intent.setType("text/plain");
intent.putExtra(android.content.Intent.EXTRA_SUBJECT,
"message subject");
intent.putExtra(android.content.Intent.EXTRA_TEXT, msgBody);
activity.startActivity(Intent.createChooser(intent, getResources().
getString(R.string.share_by_using)));

26. Create Shortcut on "Home Screen" :

Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
Intent toPrint = new Intent(this, anCreateshutcut.class);
Intent addShortcut = new Intent
("com.android.launcher.action.INSTALL_SHORTCUT");
addShortcut.putExtra(Intent.EXTRA_SHORTCUT_NAME, "Shutcutname");
addShortcut.putExtra(Intent.EXTRA_SHORTCUT_INTENT, toPrint);
addShortcut.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE,
Intent.ShortcutIconResource.fromContext(this, R.drawable.icon));
Manifest file:
<intent-filter>
<action android:name="android.intent.action.CREATE_SHORTCUT">
<category android:name="android.intent.category.LAUNCHER">
</category></action></intent-filter>
<uses-permission android:name="com.android.launcher.
permission.INSTALL_SHORTCUT">
</uses-permission>

Android（java）学习笔记143：android提供打开各种文件的API接口：setDataAndType的更多相关文章

Android（java）学习笔记86：Android提供打开各种文件的API接口：setDataAndType
1. Android 打开各种文件(setDataAndType) private void openFile(File file){ Intent intent = new Intent(); in ...
Android开发学习笔记-关于Android的消息推送以及前后台切换
下面是最简单的Android的消息推送的实现方法 package com.example.shownotic; import java.util.Random; import android.supp ...
android菜鸟学习笔记19----Android数据存储(三)XML文件的解析及序列化
Android内置了PULL解析器的XPP3实现,以及SAX解析器等,可以直接使用PULL或SAX解析XML,直接把JAVA中进行PULL或SAX解析的代码直接拿来用,遗忘的话,可以参考java拾遗1 ...
Java 学习笔记网络编程使用Socket传输文件 CS模式
Socket的简单认识 Socket是一种面向连接的通信协议,Socket应用程序是一种C/S(Client端/Server端)结构的应用程序 Socket是两台机器间通信的端点. Socket是连接 ...
java学习笔记之IO编程—目录和文件的拷贝
进行文件或目录的拷贝时,要先判断处理对象是文件还是目录,如果是文件则直接拷贝,如果是目录还需要拷贝它的子目录及其文件,这就需要递归处理了 import java.io.*; class FileUti ...
Android 数字签名学习笔记
Android 数字签名学习笔记在Android系统中,所有安装到系统的应用程序都必有一个数字证书,此数字证书用于标识应用程序的作者和在应用程序之间建立信任关系,如果一个permission的pro ...
Android自动化学习笔记之MonkeyRunner：官方介绍和简单实例
---------------------------------------------------------------------------------------------------- ...
Android动画学习笔记-Android Animation
Android动画学习笔记-Android Animation 3.0以前,android支持两种动画模式,tween animation,frame animation,在android3.0中 ...
Android:日常学习笔记(9)———探究持久化技术
Android:日常学习笔记(9)———探究持久化技术引入持久化技术什么是持久化技术持久化技术就是指将那些内存中的瞬时数据保存到存储设备中,保证即使在手机或电脑关机的情况下,这些数据仍然不会丢失 ...

随机推荐

Android开发之bindService()侦听service内部状态
在Android开发之bindService()通信的基础上,实现bindService()方法侦听service内部状态. 实现侦听service内部状态,使用的是回调机制 1.首先实现一个接口 p ...
Nginx+Keepalived 做负载均衡器
1.安装 keepalived 1 2 3 4 5 6 7 8 9 tar zxvf keepalived-XXXX.tar.gz ./configure --prefix=/usr/local/ ...
MySQL锁机制
一.概况MySQL的锁机制比较简单,其最显著的特点是不同的存储引擎支持不同的锁机制.比如,MyISAM和MEMORY存储引擎采用的是表级锁(table-level locking):BDB存储引擎采用 ...
HDU 1695 GCD 莫比乌斯反演
分析:简单的莫比乌斯反演 f[i]为k=i时的答案数然后就很简单了 #include<iostream> #include<algorithm> #include<se ...
Git branch (分支学习)
以前总结的一些git操作,分享在这里. Git 保存的不是文件差异或者变化量,而只是一系列文件快照. - 列出当前所有分支 git branch <--merge> | <--n ...
HUFFMAN 树
在一般的数据结构的书中,树的那章后面,著者一般都会介绍一下哈夫曼(HUFFMAN) 树和哈夫曼编码.哈夫曼编码是哈夫曼树的一个应用.哈夫曼编码应用广泛,如 JPEG中就应用了哈夫曼编码. 首先介绍什么 ...
javaweb之Java基础加强
1.myeclipse的安装和使用 * eclipse:是一个免费的开发工具 * myeclipse:是一个收费的插件,破解myeclipse, ** 安装目录的要求: 不能有中文和空格 ** 安装完 ...
【JS】Beginner9:Arrays
1.Lists of any kind of data 2.Index to retreve an element from the array 0 3.[] .length; .pop()/push ...
洛谷P1238 走迷宫
洛谷1238 走迷宫题目描述有一个m*n格的迷宫(表示有m行.n列),其中有可走的也有不可走的,如果用1表示可以走,0表示不可以走,文件读入这m*n个数据和起始点.结束点(起始点和结束点都是用两个 ...
一些有用的Azure工具
目前,Azure 没有为客户提供监控和管理托管服务的完整解决方案.为了获取网络信息,speedtest.net 提供了一种工具,用于测量响应时间.带宽和整体连接质量.可以使用 Matthew Roso ...

Android（java）学习笔记143：android提供打开各种文件的API接口：setDataAndType

Android（java）学习笔记143：android提供打开各种文件的API接口：setDataAndType的更多相关文章

随机推荐

热门专题