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;
        }  

来自：http://blog.csdn.net/eclipsexys/article/details/39552501