EAGLContext* CreateBestEAGLContext() { EAGLContext *context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES3]; if (context == nil) { context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2]; } return context; } 

EAGLRenderingAPI api = kEAGLRenderingAPIOpenGLES2; _eaglCtx = [[EAGLContext alloc] initWithAPI:api]; if (![EAGLContext setCurrentContext:_eaglCtx]) { NSLog(@"Failed to set current OpenGL context"); exit(1); } //创建渲染缓冲内容，并进行颜色清除和显示 glGenRenderbuffers(1, &_colorRenderBuffer); glBindRenderbuffer(GL_RENDERBUFFER, _colorRenderBuffer); [_eaglCtx renderbufferStorage:GL_RENDERBUFFER fromDrawable:_eaglLayer]; GLuint framebuffer; glGenFramebuffers(1, &framebuffer); glBindFramebuffer(GL_FRAMEBUFFER, framebuffer); glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, _colorRenderBuffer); glClearColor(69/255.0, 69/255.0, 69/255.0, 1.0); glClear(GL_COLOR_BUFFER_BIT); [_eaglCtx presentRenderbuffer:GL_RENDERBUFFER]; 

-(CLLocation *)getLocation{ locationManager = [[CLLocationManager alloc] init]; locationManager.delegate = self; locationManager.desiredAccuracy = kCLLocationAccuracyBest; locationManager.distanceFilter = kCLDistanceFilterNone; [locationManager requestAlwaysAuthorization];//添加这句 [locationManager startUpdatingLocation]; CLLocation *location = [locationManager location]; [locationManager stopUpdatingLocation]; return location; } 

//get image - (UIImage *)imageFromString:(NSString *)string attributes:(NSDictionary *)attributes size:(CGSize)size { UIGraphicsBeginImageContextWithOptions(size, NO, 0); [string drawInRect:CGRectMake(0, 0, size.width, size.height) withAttributes:attributes]; UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return image; } //compose - (id)imageComposeWithBackGroundImage:(NSString *)backgroundImage otherImage:(UIImage *)otherImage{ UIImage *bgImage = [UIImage imageNamed:backgroundImage]; UIGraphicsBeginImageContextWithOptions(bgImage.size, NO, 0.0); [bgImage drawInRect:CGRectMake(0, 0, bgImage.size.width, bgImage.size.height)]; CGFloat scale = 0.3; CGFloat margin = 5; CGFloat waterW = otherImage.size.width * scale; CGFloat waterH = otherImage.size.height * scale; CGFloat waterX = bgImage.size.width - waterW - margin; CGFloat waterY = bgImage.size.height - waterH - margin; [otherImage drawInRect:CGRectMake(waterX, waterY, waterW, waterH)]; UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return newImage; } 

 dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{ UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"网络模式设置" message:@"您确定关闭WIFI模式吗？ 在非WIFI的情况下也会进行图片网络上传下载，给您带来的流量费用将由您自己承担！" preferredStyle:UIAlertControllerStyleAlert]; UIAlertAction *button = [UIAlertAction actionWithTitle:@"我知道了" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action) { }]; [alert addAction:button]; UIAlertAction *button2 = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action) { }]; [alert addAction:button2]; NSLog(@"******* %@",[self allPropertyNamesWithObject:alert]); alert.view.tintColor = UIColorFromRGB(0xef6f22); NSLog(@"%@",alert.textFields); [alert.textFields.firstObject setTextColor:UIColorFromRGB(0xffffff)]; if ([UIDevice currentDevice].systemVersion.floatValue >= 9.0) { [[UIView appearanceWhenContainedInInstancesOfClasses:@[[alert class]]] setBackgroundColor:[UIColor lightGrayColor]]; }else [[UIView appearanceWhenContainedIn:[UIAlertController class], nil] setBackgroundColor:[UIColor blackColor]]; alert.view.layer.cornerRadius = 6; alert.view.clipsToBounds = YES; [self presentViewController:alert animated:YES completion:nil]; }); 

- (void)reachableWithResponse:(void (^) (GDUNetworkConnectionStatus status))responseBlock{ self.action_block = responseBlock; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reachabilityChanged:) name:kReachabilityChangedNotification object:nil]; self.networReachability = [Reachability reachabilityForInternetConnection]; [self.networReachability startNotifier]; [self updateInterfaceWithReachability:self.networReachability]; } - (void)reachabilityChanged:(NSNotification* )note { Reachability* curReach = [note object]; NSParameterAssert([curReach isKindOfClass:[Reachability class]]); [self updateInterfaceWithReachability:curReach]; } - (void)updateInterfaceWithReachability:(Reachability *) reachability { if (reachability == self.networReachability) { NetworkStatus netStatus = [reachability currentReachabilityStatus]; BOOL connectionRequired = [reachability connectionRequired]; switch (netStatus) { case NotReachable: { NSLog(@"%@",NSLocalizedString(@"Access Not Available", @"Text field text for access is not available")); /* Minor interface detail- connectionRequired may return YES even when the host is unreachable. We cover that up here... */ connectionRequired = NO; break; } case ReachableViaWWAN: { NSLog(@"%@",NSLocalizedString(@"Reachable WWAN", @"")); break; } case ReachableViaWiFi: { NSLog(@"%@",NSLocalizedString(@"Reachable WiFi", @"")); break; } } if (self.action_block) self.action_block((GDUNetworkConnectionStatus)netStatus); } } - (void)dealloc{ [[NSNotificationCenter defaultCenter] removeObserver:self name:kReachabilityChangedNotification object:nil]; }