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yanueyanue
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新增iOS端图片动态转换尺寸 url 方法
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‎Objective-C/EsttTransformPicUrl.h‎

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//
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// EsttTransformPicUrl.h
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// CKG
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//
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// Created by ZhJ on 16/3/3.
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// Copyright © 2016年 ESTT. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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@interface EsttTransformPicUrl : NSObject
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/**
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* 获取原生大小图片地址
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*/
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+ (NSURL *)transformToOriginSize:(NSURL *)picUrl;
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/**
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* 获取固定大小图片地址
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*/
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+ (NSURL *)transformUrl:(NSURL *)picUrl ToSize:(CGSize)confirmSize;
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/**
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* 获取固定宽自动高图片地址
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*/
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+ (NSURL *)transformUrl:(NSURL *)picUrl ToWidth:(CGFloat)width;
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/**
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* 获取固定高自动宽图片地址
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*/
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+ (NSURL *)transformUrl:(NSURL *)picUrl ToHeight:(CGFloat)height;
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/**
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* 解析URL参数的工具方法。
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*/
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+ (NSDictionary *)parseURLParams:(NSString *)query;
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@end

‎Objective-C/EsttTransformPicUrl.m‎

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//
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// EsttTransformPicUrl.m
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// CKG
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//
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// Created by ZhJ on 16/3/3.
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// Copyright © 2016年 ESTT. All rights reserved.
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//
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#import "EsttTransformPicUrl.h"
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#define BASE_HOST @"estt.com.cn"
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//#define BASE_HOST @"bzsns.cn"
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#define BASE_HOST_CHILDREN @[@"static",@"www",@"test",@"dev",@"fdfs"]
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@implementation EsttTransformPicUrl
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// 获取原生大小图片地址
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+ (NSURL *)transformToOriginSize:(NSURL *)picUrl {
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NSString *host = [picUrl host];
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BOOL isOurServer = NO;
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if ([host containsString:BASE_HOST]) {
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NSMutableArray *childrenHost = [NSMutableArray arrayWithArray:BASE_HOST_CHILDREN];
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NSString *child = [host componentsSeparatedByString:@"."][0];
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isOurServer = [childrenHost containsObject:child]? YES : NO;
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}
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if (isOurServer) {
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NSString *fileName = [[picUrl pathComponents] lastObject];
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NSMutableString *newFileName = [NSMutableString stringWithString:[fileName copy]];
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if ([fileName containsString:@"_"]) {
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newFileName = [NSMutableString stringWithString:[fileName componentsSeparatedByString:@"_"][0]];
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}
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NSMutableString *picUrlStr = [NSMutableString stringWithString:[picUrl absoluteString]];
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[picUrlStr replaceCharactersInRange:[picUrlStr rangeOfString:fileName] withString:newFileName];
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NSURL *newPicUrl = [NSURL URLWithString:picUrlStr];
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return newPicUrl;
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} else {
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return picUrl;
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}
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}
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// 获取固定大小图片地址
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+ (NSURL *)transformUrl:(NSURL *)picUrl ToSize:(CGSize)confirmSize {
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NSString *host = [picUrl host];
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BOOL isOurServer = NO;
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if ([host containsString:BASE_HOST]) {
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NSMutableArray *childrenHost = [NSMutableArray arrayWithArray:BASE_HOST_CHILDREN];
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NSString *child = [host componentsSeparatedByString:@"."][0];
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isOurServer = [childrenHost containsObject:child]? YES : NO;
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}
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if (isOurServer) {
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NSString *fileName = [[picUrl pathComponents] lastObject];
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NSMutableString *newFileName = [NSMutableString stringWithString:[fileName copy]];
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NSMutableString *picUrlStr = [NSMutableString stringWithString:[picUrl absoluteString]];
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NSURL *newPicUrl;
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if ([fileName containsString:@"_"]) {
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newFileName = [NSMutableString stringWithString:[fileName componentsSeparatedByString:@"_"][0]];
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[picUrlStr replaceCharactersInRange:[picUrlStr rangeOfString:fileName] withString:newFileName];
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newPicUrl = [NSURL URLWithString:picUrlStr];
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}
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NSString *sizeStr = [NSString stringWithFormat:@"_%.fx%.f.png", confirmSize.width*1.5, confirmSize.height*1.5];
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[newFileName appendString:sizeStr];
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fileName = [[picUrl pathComponents] lastObject];
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[picUrlStr replaceCharactersInRange:[picUrlStr rangeOfString:fileName] withString:newFileName];
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newPicUrl = [NSURL URLWithString:picUrlStr];
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return newPicUrl;
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} else {
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return picUrl;
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}
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}
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// 获取固定宽自动高图片地址
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+ (NSURL *)transformUrl:(NSURL *)picUrl ToWidth:(CGFloat)width {
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NSString *host = [picUrl host];
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BOOL isOurServer = NO;
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if ([host containsString:BASE_HOST]) {
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NSMutableArray *childrenHost = [NSMutableArray arrayWithArray:BASE_HOST_CHILDREN];
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NSString *child = [host componentsSeparatedByString:@"."][0];
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isOurServer = [childrenHost containsObject:child]? YES : NO;
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}
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if (isOurServer) {
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NSString *fileName = [[picUrl pathComponents] lastObject];
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NSMutableString *newFileName = [NSMutableString stringWithString:[fileName copy]];
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NSMutableString *picUrlStr = [NSMutableString stringWithString:[picUrl absoluteString]];
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NSURL *newPicUrl;
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if ([fileName containsString:@"_"]) {
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newFileName = [NSMutableString stringWithString:[fileName componentsSeparatedByString:@"_"][0]];
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[picUrlStr replaceCharactersInRange:[picUrlStr rangeOfString:fileName] withString:newFileName];
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newPicUrl = [NSURL URLWithString:picUrlStr];
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}
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NSString *sizeStr = [NSString stringWithFormat:@"_%.f-.jpg", width*1.5];
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[newFileName appendString:sizeStr];
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fileName = [[picUrl pathComponents] lastObject];
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[picUrlStr replaceCharactersInRange:[picUrlStr rangeOfString:fileName] withString:newFileName];
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newPicUrl = [NSURL URLWithString:picUrlStr];
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return newPicUrl;
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} else {
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return picUrl;
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}
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}
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// 获取固定高自动宽图片地址
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+ (NSURL *)transformUrl:(NSURL *)picUrl ToHeight:(CGFloat)height {
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NSString *host = [picUrl host];
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BOOL isOurServer = NO;
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if ([host containsString:BASE_HOST]) {
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NSMutableArray *childrenHost = [NSMutableArray arrayWithArray:BASE_HOST_CHILDREN];
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NSString *child = [host componentsSeparatedByString:@"."][0];
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isOurServer = [childrenHost containsObject:child]? YES : NO;
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}
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if (isOurServer) {
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NSString *fileName = [[picUrl pathComponents] lastObject];
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NSMutableString *newFileName = [NSMutableString stringWithString:[fileName copy]];
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NSMutableString *picUrlStr = [NSMutableString stringWithString:[picUrl absoluteString]];
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NSURL *newPicUrl;
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if ([fileName containsString:@"_"]) {
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newFileName = [NSMutableString stringWithString:[fileName componentsSeparatedByString:@"_"][0]];
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[picUrlStr replaceCharactersInRange:[picUrlStr rangeOfString:fileName] withString:newFileName];
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newPicUrl = [NSURL URLWithString:picUrlStr];
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}
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NSString *sizeStr = [NSString stringWithFormat:@"_-%.f.jpg", height*1.5];
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[newFileName appendString:sizeStr];
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fileName = [[picUrl pathComponents] lastObject];
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[picUrlStr replaceCharactersInRange:[picUrlStr rangeOfString:fileName] withString:newFileName];
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newPicUrl = [NSURL URLWithString:picUrlStr];
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return newPicUrl;
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} else {
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return picUrl;
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}
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}
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/**
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* 解析URL参数的工具方法。
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*/
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+ (NSDictionary *)parseURLParams:(NSString *)query{
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NSArray *pairs = [query componentsSeparatedByString:@"&"];
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NSMutableDictionary *params = [[NSMutableDictionary alloc] init];
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for (NSString *pair in pairs) {
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NSArray *kv = [pair componentsSeparatedByString:@"="];
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if (kv.count == 2) {
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NSString *val =[[kv objectAtIndex:1] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
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[params setObject:val forKey:[kv objectAtIndex:0]];
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}
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}
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return params;
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}
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@end

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