Android打开各种类型的文件方法总结

很简单，通过调用系统的intent，我们可以打开各种文件，不熟悉的朋友可以了解下action、datatype、uri的相关知识。

通用方法如下：

public static Intent openFile(String filePath){File file = new File(filePath);if(!file.exists()) return null;/* 取得扩展名 */String end=file.getName().substring(file.getName().lastIndexOf(".") + 1,file.getName().length()).toLowerCase(); /* 依扩展名的类型决定MimeType */if(end.equals("m4a")||end.equals("mp3")||end.equals("mid")||end.equals("xmf")||end.equals("ogg")||end.equals("wav")){return getAudioFileIntent(filePath);}else if(end.equals("3gp")||end.equals("mp4")){return getAudioFileIntent(filePath);}else if(end.equals("jpg")||end.equals("gif")||end.equals("png")||end.equals("jpeg")||end.equals("bmp")){return getImageFileIntent(filePath);}else if(end.equals("apk")){return getApkFileIntent(filePath);}else if(end.equals("ppt")){return getPptFileIntent(filePath);}else if(end.equals("xls")){return getExcelFileIntent(filePath);}else if(end.equals("doc")){return getWordFileIntent(filePath);}else if(end.equals("pdf")){return getPdfFileIntent(filePath);}else if(end.equals("chm")){return getChmFileIntent(filePath);}else if(end.equals("txt")){return getTextFileIntent(filePath,false);}else{return getAllIntent(filePath);}}//Android获取一个用于打开APK文件的intentpublic static Intent getAllIntent( String param ) {Intent intent = new Intent();  intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);  intent.setAction(android.content.Intent.ACTION_VIEW);  Uri uri = Uri.fromFile(new File(param ));intent.setDataAndType(uri,"*/*"); return intent;}//Android获取一个用于打开APK文件的intentpublic static Intent getApkFileIntent( String param ) {Intent intent = new Intent();  intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);  intent.setAction(android.content.Intent.ACTION_VIEW);  Uri uri = Uri.fromFile(new File(param ));intent.setDataAndType(uri,"application/vnd.android.package-archive"); return intent;}//Android获取一个用于打开VIDEO文件的intentpublic static Intent getVideoFileIntent( String param ) {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(param ));intent.setDataAndType(uri, "video/*");return intent;}//Android获取一个用于打开AUDIO文件的intentpublic static Intent getAudioFileIntent( String param ){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(param ));intent.setDataAndType(uri, "audio/*");return intent;}//Android获取一个用于打开Html文件的intent   public static Intent getHtmlFileIntent( String param ){Uri uri = Uri.parse(param ).buildUpon().encodedAuthority("com.android.htmlfileprovider").scheme("content").encodedPath(param ).build();Intent intent = new Intent("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intentpublic static Intent getImageFileIntent( 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, "image/*");return intent;}//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;   }

以上。