android 开发 获取各种intent （图片、apk文件、excel、pdf等文件）

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;

    }