【完整APP】SpriteKit引擎开发iOS小游戏之五（移动端网络与优化）【完结】
【网络动画效果】
众所周知，包括但不限于网络处理，很多使用APP的时机都需要展示Loading或者Toast提示的形式来提升用户的交互体验。
- 自定义Loading类：是继承UIActivityIndicatorView的子类。简化创建与管理。指定了布局与样式等。对外暴露创建与消失方法。
#import "LJZLoading.h"
@implementation LJZLoading
- (instancetype)initWithActivityIndicatorStyle:(UIActivityIndicatorViewStyle)style
{
self = [super initWithActivityIndicatorStyle:style];
if(self){
self.hidesWhenStopped = YES;
self.frame = CGRectMake(0, 0, 150, 150);
self.center = CGPointMake([UIScreen mainScreen].bounds.size.width/2, [UIScreen mainScreen].bounds.size.height/2);
self.backgroundColor = [UIColor blackColor];
self.alpha = 0.5;
[[[UIApplication sharedApplication] keyWindow] addSubview:self];
[self startAnimating];
}
return self;
}
- (void)StopShowLoading
{
[self stopAnimating];
[self removeFromSuperview];
}
@end
- 自定义Toast类”LJZToast“：设计为以单例模式调用，控制内容与展示时长，在固定位置展示出提示信息。其头文件如下：
#import - Toast的实现上，UILabel子类的样式自定义，dispatch_once执行静态单例。dispatch_after控制展示animateWithDuration实现消失动画，具体实现如下：
#import "LJZToast.h"
@implementation ToastLabel
- (instancetype)init
{
self = [super init];
if(self){
self.layer.cornerRadius = 8;
self.layer.masksToBounds = YES;
self.backgroundColor = [UIColor blackColor];
self.numberOfLines = 0;
self.textAlignment = NSTextAlignmentCenter;
self.textColor = [UIColor whiteColor];
self.font = [UIFont systemFontOfSize:15];
}
return self;
}
- (void)setMessageText:(NSString *)text
{
[self setText:text];
self.frame = CGRectMake(0, 0, 150, 50);
self.center = CGPointMake([UIScreen mainScreen].bounds.size.width/2, 150);
}
@end
@implementation LJZToast
+ (instancetype)shareInstance
{
static LJZToast *singleton = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
singleton = [[LJZToast alloc] init];
});
return singleton;
}
- (instancetype)init
{
self = [super init];
if(self){
self.toastLabel = [[ToastLabel alloc] init];
}
return self;
}
- (void)ShowToast:(NSString *)message duration:(CGFloat)duration
{
if([message length] == 0){
return;
}
[_toastLabel setMessageText:message];
_toastLabel.alpha = 0.8;
[[[UIApplication sharedApplication] keyWindow] addSubview:_toastLabel];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(duration * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self changeTime];
});
}
- (void)changeTime
{
[UIView animateWithDuration:0.2f animations:^{
_toastLabel.alpha = 0;
}completion:^(BOOL finished) {
[_toastLabel removeFromSuperview];
}];
}
@end
【移动端网络请求】
- 类NSURLSession
对于iOS而言，网络编程主要依赖两种方式：NSURLSession以及NSURLConnection。在iOS9.0之后，NSURLConnection过期不再使用。本系统使用NSURLSession来完成客户端的网络模块。NSURLSession具有以下优势
（1）NSURLSession支持http2.0协议。
（2） NSURLSession在下载任务时会直接写入沙盒和tem文件夹中，不会放入内存避免内存暴涨。
（3）NSURLSession提供来全局的session并且可以统一配置，每一个实例也可单独配置。
（4）NSURLSession下载支持断点续传，可以取消暂停继续，使用多线程异步处理下载。 - 类NSURLSessionTask
NSURLSessionTask是一个抽象类，如图4-3展示，使用时根据具体需求使用子类。
- 请求过程与解析
在游戏中，用户需要在登陆，注册，上传成绩，以及查看排行等地方进行网络请求，NSURLSession的使用非常简便，根据会话对象创建一个请求Task然后执行，请求过程
结合Loading与Toast的使用，APP中主要的网络请求实现如下：
- 登录请求与处理部分
- (void)HandleLogin
{
[self.view endEditing:YES];
NSString *username = self.account.text;
NSString *password = self.password.text;
//输入合法性检验
if (username.length == 0 || password.length == 0){
[[LJZToast shareInstance] ShowToast:@"用户名与密码不能为空！" duration:1];
return;
}
LJZLoading *loadingView = [[LJZLoading alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"http://39.98.152.99:80/login?username=%@&password=%@",username,password]];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionTask *dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
if(error == nil) {
NSString *responseInfo = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];//接受字符串
NSLog(@"reponse data:%@",responseInfo);
if([responseInfo isEqualToString:@"enable"]){
NSUserDefaults *userDefault= [NSUserDefaults standardUserDefaults];
[userDefault setObject:username forKey:@"user_name"];
dispatch_async(dispatch_get_main_queue(), ^{
[loadingView StopShowLoading];
[[LJZToast shareInstance] ShowToast:@"登录成功！" duration:1];
[self dismissViewControllerAnimated:YES completion:nil];
});
} else{
dispatch_async(dispatch_get_main_queue(), ^{
[loadingView StopShowLoading];
[[LJZToast shareInstance] ShowToast:@"登录失败,请检查用户名与密码！" duration:1];
});
}
}else{
dispatch_async(dispatch_get_main_queue(), ^{
[loadingView StopShowLoading];
[[LJZToast shareInstance] ShowToast:@"请检查网络！" duration:1];
});
NSLog(@"server error:%@",error);
}
}];
[dataTask resume];
}
- 注册处理
- (void)HandleRegister
{
NSString *username = self.account.text;
NSString *password = self.password.text;
if (username.length == 0 || password.length == 0){
[[LJZToast shareInstance] ShowToast:@"用户名与密码不能为空！" duration:1];
return;
}else if (username.length > 15 || password.length >15){
[[LJZToast shareInstance] ShowToast:@"用户名与密码不超过15位！" duration:1];
return;
}
//输入合法性检验
LJZLoading *loadingView = [[LJZLoading alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"http://39.98.152.99:80/register?username=%@&password=%@",username,password]];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionTask *dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
if(error == nil) {
NSString *responseInfo = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];//接受字符串
NSLog(@"reponse data:%@",responseInfo);
if([responseInfo isEqualToString:@"enable"]){
dispatch_async(dispatch_get_main_queue(), ^{
[loadingView StopShowLoading];
[[LJZToast shareInstance] ShowToast:@"注册成功！" duration:1];
[self dismissViewControllerAnimated:YES completion:nil];
});
} else{
dispatch_async(dispatch_get_main_queue(), ^{
[loadingView StopShowLoading];
[[LJZToast shareInstance] ShowToast:@"该名字已被注册！" duration:1];
});
}
}else{
dispatch_async(dispatch_get_main_queue(), ^{
[loadingView StopShowLoading];
[[LJZToast shareInstance] ShowToast:@"请检查网络！" duration:1];
});
NSLog(@"server error:%@",error);
}
}];
[dataTask resume];
}
- 请求排行榜数据
- (void)GetPlayersInfo
{
NSUserDefaults *userDefault = [NSUserDefaults standardUserDefaults];
NSString *username = [userDefault objectForKey:@"user_name"];
NSString *isLogin;
if (username == nil){
_playerAccoutRank.text = @"-";
_playerAccoutScore.text = @"-";
_playerAccoutName.text = @"未登陆";
isLogin = @"no";
} else{
_playerAccoutName.text = [NSString stringWithFormat:@"%@",username];
isLogin = @"yes";
}
//请求排行榜数据
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"http://39.98.152.99:80/rankInfo?username=%@&islogin=%@",username,isLogin]];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionTask *dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
if(error == nil) {
NSDictionary *responseInfo = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
NSLog(@"reponse data:%@",responseInfo);
if ([isLogin isEqualToString:@"yes"]){
_playerRank = responseInfo[@"self_rank"];
_playerScore = responseInfo[@"self_score"];
dispatch_async(dispatch_get_main_queue(), ^{
[self ShowSelfInfo];
});
}
_firstPlayerName = responseInfo[@"p1_name"];
_secondPlayerName = responseInfo[@"p2_name"];
_thirdPlayerName = responseInfo[@"p3_name"];
_fourthPlayerName = responseInfo[@"p4_name"];
_fifthPlayerName = responseInfo[@"p5_name"];
_sixthPlayerName = responseInfo[@"p6_name"];
_firstPlayerScore = responseInfo[@"p1_score"];
_secondPlayerScore = responseInfo[@"p2_score"];
_thirdPlayerScore = responseInfo[@"p3_score"];
_fourthPlayerScore = responseInfo[@"p4_score"];
_fifthPlayerScore = responseInfo[@"p5_score"];
_sixthPlayerScore = responseInfo[@"p6_score"];
dispatch_async(dispatch_get_main_queue(), ^{
[self ShowRankInfo];
});
}else{
[[LJZToast shareInstance] ShowToast:@"请检查网络！" duration:1];
NSLog(@"server error:%@",error);
}
}];
[dataTask resume];
}
- 在游戏结束界面上传新成绩
- (void)handleUpload
{
NSUserDefaults *userDefault = [NSUserDefaults standardUserDefaults];
NSString *username = [userDefault objectForKey:@"user_name"];
if (username == nil){
[[LJZToast shareInstance] ShowToast:@"未登陆不可上传成绩" duration:1];
} else{
LJZLoading *loadingView = [[LJZLoading alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"http://39.98.152.99:80/upLoadScore?username=%@&score=%ld",username,self.resultScore]];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionTask *dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
if(error == nil) {
NSString *responseInfo = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];//接受字符串
NSLog(@"reponse data:%@",responseInfo);
dispatch_async(dispatch_get_main_queue(), ^{
[loadingView StopShowLoading];
[[LJZToast shareInstance] ShowToast:[NSString stringWithFormat:@"%@",responseInfo] duration:1];
});
}else{
dispatch_async(dispatch_get_main_queue(), ^{
[loadingView StopShowLoading];
[[LJZToast shareInstance] ShowToast:@"上传成绩失败，请检查网络！" duration:1];
});
NSLog(@"server error:%@",error);
}
}];
[dataTask resume];
}
}
【其他优化】
- 合理的地方加入主线程保护：主要为UI改动。
dispatch_async(dispatch_get_main_queue(), ^{
//要做的事情
});
- 注意释放内存
//移除通知
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
//场景中。。。
- (void)die
{
[self.pipeTimer invalidate];
[self.toolTimerOne invalidate];
[self.toolTimerTwo invalidate];
[self.toolTimerThree invalidate];
[self.bgmPlayer stop];
self.bgmPlayer = nil;
[self changeToResultSceneWithScore:self.score];
}
- 耗时与持续工作放入后台线程运行。
- 在关键的工作节点与事件触发中打出Log信息，按一定规则打印，便于测试。
【未来展望】
作为游戏APP算是搭建比较完善了。游戏组件的抽离也有利于后续的扩展游戏功能。存在包括不限以下的ToDo：
- 游戏角色单一，是否可添加游戏角色的选择。
- 游戏账号货币的积累，开放游戏商城功能。
- 游戏内容或者截图分享？
- 道具与障碍的有待多元化？
- 支持多人运动飞行？