android Intent打开各种类型文件（(PDF、word、excel、ppt、chm）

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//android获取一个用于打开PPT文件的intent   public static Intent getPptFileIntent( String param )   {     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(param ));     intent.setDataAndType(uri, "application/vnd.ms-powerpoint");     return intent;   }  //android获取一个用于打开Excel文件的intent   public static Intent getExcelFileIntent( String param )   {     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(param ));     intent.setDataAndType(uri, "application/vnd.ms-excel");     return intent;   }  //android获取一个用于打开Word文件的intent   public static Intent getWordFileIntent( String param )   {     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(param ));     intent.setDataAndType(uri, "application/msword");     return intent;   }  //android获取一个用于打开CHM文件的intent   public static Intent getChmFileIntent( String param )   {     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(param ));     intent.setDataAndType(uri, "application/x-chm");     return intent;   }  //android获取一个用于打开文本文件的intent public static Intent getTextFileIntent( String param, boolean paramBoolean) { 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 uri2 = Uri.fromFile(new File(param )); intent.setDataAndType(uri2, "text/plain"); } return intent; }  //android获取一个用于打开PDF文件的intent   public static Intent getPdfFileIntent( String param )   {     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(param ));     intent.setDataAndType(uri, "application/pdf");     return intent;   }
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