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intent            public 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intent            public 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intent            public 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intent            public 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intent            public 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;               }