• 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(); 
        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 : 

    Java代码   收藏代码
    1. Uri uri = Uri.parse("content://media/external/images/media/23");  
    2. Intent intent = new Intent(Intent.ACTION_SEND);  
    3. intent.putExtra("sms_body", "some text");  
    4. intent.putExtra(Intent.EXTRA_STREAM, uri);  
    5. intent.setType("image/png");   
    6. this.startActivity(intent);  

    17. Send an Email :

    Java代码   收藏代码
    1. Uri uri = Uri.parse ("mailto: xxx@abc.com");   
    2. Intent intent = new Intent (Intent.ACTION_SENDTO, uri);    
    3. this.startActivity(intent);  

    18. Send an Email with body :

    Java代码   收藏代码
    1. Intent intent = new Intent(Intent.ACTION_SEND);  
    2. intent.putExtra(Intent.EXTRA_EMAIL,"me@abc.com");  
    3. intent.putExtra(Intent.EXTRA_TEXT,"The email body text");  
    4. intent.setType ("text/plain");  
    5. this.startActivity(  
    6. Intent.createChooser(intent, "Choose Email Client"));    

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

    Java代码   收藏代码
    1. Intent intent = new Intent(Intent.ACTION_SEND);  
    2. String [] tos ={"me@abc.com"};  
    3. String [] ccs ={"you@abc.com"};  
    4. intent.putExtra(Intent.EXTRA_EMAIL, tos);  
    5. intent.putExtra(Intent.EXTRA_CC, ccs);  
    6. intent.putExtra(Intent.EXTRA_TEXT, "The email body text");  
    7. intent.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");  
    8. intent.setType("message/rfc822");  
    9. this.startActivity(  
    10. Intent.createChooser(intent, "Choose Email Client"));    

    20. Send an Email with attachments :

    Java代码   收藏代码
    1. Intent intent = new Intent(Intent.ACTION_SEND);  
    2. intent.putExtra(Intent.EXTRA_SUBJECT,"The email subject text");  
    3. intent.putExtra(Intent.EXTRA_STREAM,"file :///sdcard/mysong.mp3");  
    4. sendIntent.setType("audio/mp3");  
    5. this.startActivity(  
    6. Intent.createChooser(intent,"Choose Email Client"));    

    21. Uninstall the program :

    Java代码   收藏代码
    1. Uri uri = Uri.fromParts ("package", strPackageName, null);  
    2. Intent intent = new Intent (Intent.ACTION_DELETE, uri);   
    3. this.startActivity(  
    4. Intent.createChooser(intent,"Choose Email Client"));    

    22. Install the apk :

    Java代码   收藏代码
    1. Uri installUri = Uri.fromParts("package", "xxx", null);  
    2. returnIt = new Intent(Intent.ACTION_PACKAGE_ADDED, installUri);   
    3. this.startActivity(returnIt);    

    23. Search applications :

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

     

    24. Google Search Launch Web Browser :

    Java代码   收藏代码
    1. Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);  
    2. String term = "Android";  
    3. intent.putExtra(SearchManager.QUERY, term);  
    4. activity.startActivity(intent);  

     

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

    Java代码   收藏代码
    1. Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);  
    2. String msgBody = "This is message";  
    3. Intent intent = new Intent(android.content.Intent.ACTION_SEND);  
    4. intent.setType("text/plain");  
    5. intent.putExtra(android.content.Intent.EXTRA_SUBJECT,   
    6. "message subject");  
    7. intent.putExtra(android.content.Intent.EXTRA_TEXT, msgBody);  
    8. activity.startActivity(Intent.createChooser(intent, getResources().  
    9. getString(R.string.share_by_using)));  

    26. Create Shortcut on "Home Screen" :

    1. Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);  
    2. Intent toPrint = new Intent(this, anCreateshutcut.class);    
    3. Intent addShortcut = new Intent  
    4. ("com.android.launcher.action.INSTALL_SHORTCUT");    
    5. addShortcut.putExtra(Intent.EXTRA_SHORTCUT_NAME, "Shutcutname");    
    6. addShortcut.putExtra(Intent.EXTRA_SHORTCUT_INTENT, toPrint);    
    7. addShortcut.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE,   
    8. Intent.ShortcutIconResource.fromContext(this, R.drawable.icon));  
    9.    
    10. Manifest file:  
    11. <intent-filter>    
    12.   <action android:name="android.intent.action.CREATE_SHORTCUT">    
    13.   <category android:name="android.intent.category.LAUNCHER">    
    14. </category></action></intent-filter>  
    15. <uses-permission android:name="com.android.launcher.  
    16. permission.INSTALL_SHORTCUT">  
    17. </uses-permission>  
  • 相关阅读:
    java学习笔记
    androd Sdk manager配置
    50ms延时程序
    89c51中断入口地址表
    打印杨辉三角--队列的应用
    栈的应用--括号匹配
    哈夫曼编码---数据压缩
    PS转手绘
    数据结构学习思路
    第三届蓝桥杯省赛---第39级台阶
  • 原文地址:https://www.cnblogs.com/hebao0514/p/4711811.html
Copyright © 2020-2023  润新知