android打开各种文件的类

1. import android.content.Intent;
   import android.net.Uri;
   import java.io.File;
   /**
   * Created by Kevin on 2015/12/9.
   */
   public classOpenFiles{
   　　//android获取一个用于打开HTML文件的intent
       public static Intent getHtmlFileIntent(File file){
         Uri uri =Uri.parse(file.toString()).buildUpon().encodedAuthority("com.android.htmlfileprovider").scheme("content").encodedPath(file.toString()).build();
         Intent intent =newIntent("android.intent.action.VIEW");
         intent.setDataAndType(uri,"text/html");
         return intent;
       } 
       //android获取一个用于打开图片文件的intent
       public static Intent getImageFileIntent(File file){
          Intent intent =newIntent("android.intent.action.VIEW");
          intent.addCategory("android.intent.category.DEFAULT");
          intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
          Uri uri =Uri.fromFile(file);
          intent.setDataAndType(uri,"image/*");
          return intent;
       }
       //android获取一个用于打开PDF文件的intent
       public static Intent getPdfFileIntent(File file){
         Intent intent =newIntent("android.intent.action.VIEW");
         intent.addCategory("android.intent.category.DEFAULT");
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         Uri uri =Uri.fromFile(file);
         intent.setDataAndType(uri,"application/pdf");
         return intent;
       }
       //android获取一个用于打开文本文件的intent
       public static Intent getTextFileIntent(File file){
          Intent intent =newIntent("android.intent.action.VIEW");
          intent.addCategory("android.intent.category.DEFAULT");
          intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
          Uri uri =Uri.fromFile(file);
          intent.setDataAndType(uri,"text/plain");
          return intent;
       }
      //android获取一个用于打开音频文件的intent
      public static Intent getAudioFileIntent(File file){
        Intent intent =newIntent("android.intent.action.VIEW");
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        intent.putExtra("oneshot",0);
        intent.putExtra("configchange",0);
        Uri uri =Uri.fromFile(file);
        intent.setDataAndType(uri,"audio/*");
        return intent;
      }
      //android获取一个用于打开视频文件的intent
      public static Intent getVideoFileIntent(File file){
         Intent intent =newIntent("android.intent.action.VIEW");
         intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
         intent.putExtra("oneshot",0);
         intent.putExtra("configchange",0);
         Uri uri =Uri.fromFile(file);
         intent.setDataAndType(uri,"video/*");
         return intent;
      }
      //android获取一个用于打开CHM文件的intent
      public static Intent getChmFileIntent(File file){
         Intent intent =newIntent("android.intent.action.VIEW");
         intent.addCategory("android.intent.category.DEFAULT");
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         Uri uri =Uri.fromFile(file);
         intent.setDataAndType(uri,"application/x-chm");
         return intent;
      }
      //android获取一个用于打开Word文件的intent
      public static Intent getWordFileIntent(File file){
        Intent intent =newIntent("android.intent.action.VIEW");
        intent.addCategory("android.intent.category.DEFAULT");
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        Uri uri =Uri.fromFile(file);
        intent.setDataAndType(uri,"application/msword");
        return intent;
      }
      //android获取一个用于打开Excel文件的intent
      public static Intent getExcelFileIntent(File file){
         Intent intent =newIntent("android.intent.action.VIEW");
         intent.addCategory("android.intent.category.DEFAULT");
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         Uri uri =Uri.fromFile(file);
         intent.setDataAndType(uri,"application/vnd.ms-excel");
         return intent;
      }
      //android获取一个用于打开PPT文件的intent
      public static Intent getPPTFileIntent(File file){
         Intent intent =newIntent("android.intent.action.VIEW");
         intent.addCategory("android.intent.category.DEFAULT");
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         Uri uri =Uri.fromFile(file);
         intent.setDataAndType(uri,"application/vnd.ms-powerpoint");
         return intent;
      }
      //android获取一个用于打开apk文件的intent
      public static Intent getApkFileIntent(File file){
         Intent intent =newIntent();
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         intent.setAction(android.content.Intent.ACTION_VIEW);
         intent.setDataAndType(Uri.fromFile(file),"application/vnd.android.package-archive");
         return intent;
      }
   }