#import"ViewController.h"
//遵守协议
@interfaceViewController
()
@property(nonatomic,strong)UIButton*userBtn;
@end
@implementationViewController
- (void)viewDidLoad {
[superviewDidLoad];
//所有的能看到的UI控件创建初始化方式都可以采用alloc initWithFrame
self.userBtn= [[UIButtonalloc]initWithFrame:CGRectMake(30,60,80,80)];
//设置颜色
self.userBtn.backgroundColor= [UIColorredColor];
//设置圆形半径
self.userBtn.layer.cornerRadius=40;
self.userBtn.layer.masksToBounds=YES;
//添加点击事件：去访问系统相信
[self.userBtnaddTarget:selfaction:@selector(setUserImage) forControlEvents:(UIControlEventTouchUpInside)];
//添加到屏幕上来
[self.viewaddSubview:self.userBtn];
}
//这个方法是协议UIImagePickerController里面的，选择图片结束的时候就会自动调用。
- (void)imagePickerController:(UIImagePickerController
*)picker didFinishPickingImage:(UIImage *)image editingInfo:(nullableNSDictionary *)editingInfo{
//设置头像
[self.userBtnsetBackgroundImage:image forState:(UIControlStateNormal)];
//将系统相册消失掉
[pickerdismissViewControllerAnimated:YEScompletion:nil];
//
}
//访问系统相册
-(void)setUserImage
{
//创建系统相册
UIImagePickerController*imagePicker =[[UIImagePickerControlleralloc]init];
//设置代理
imagePicker.delegate=self;
//弹出系统相册
[selfpresentViewController:imagePicker
animated:YEScompletion:nil];
}
- (void)didReceiveMemoryWarning{
[superdidReceiveMemoryWarning];
// Dispose of any resources that can be
recreated.
}
@end
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