上一章的登陆页我用Masonry重新实现，我想比较一下auto layout和Masonry布局的区别，就我个人而言，我觉的用代码实现还是比较好一点。
这是我要在项目中用到的两个宏：
/** 主屏幕的宽度比例 */
#define YC_M_SCREEN_W_SCALE (YC_M_SCREEN_W/320)
/** 按宽度去适配 */
#define kScaleFrom_iPhone5_Desgin(_X_) (_X_ * YC_M_SCREEN_W_SCALE)
主要的代码实现，如果不太懂可以看看上一篇的效果图，这样容易理解：
#pragma mark -- Private method
- (void)initViewLayout {
//1.背景图
UIImageView *backgroundImageView = [UIImageView new];
backgroundImageView.image = [UIImage imageNamed:@"底图"];
[self.view addSubview:backgroundImageView];
[backgroundImageView mas_makeConstraints:^(MASConstraintMaker *make) {
make.edges.equalTo(self.view);
}];
//2.logo图标
UIImageView *logoImageView = [UIImageView new];
logoImageView.image = [UIImage imageNamed:@"奖惩戳"];
// [logoImageView sd_setImageWithURL:[NSURL URLWithString:@"https://www.baidu.com/img/bd_logo1.png"] placeholderImage:nil];
// [self.view addSubview:logoImageView];
[logoImageView mas_makeConstraints:^(MASConstraintMaker *make) {
make.centerX.equalTo(self.view.mas_centerX);
make.top.equalTo(self.view.mas_top).with.offset(kScaleFrom_iPhone5_Desgin(30));
make.width.equalTo(@kScaleFrom_iPhone5_Desgin(180));
make.height.equalTo(@kScaleFrom_iPhone5_Desgin(180));
}];
//3.公司名字
UIImageView *companyImageView = [UIImageView new];
companyImageView.image = [UIImage imageNamed:@"bottom"];
[self.view addSubview:companyImageView];
[companyImageView mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(self.view.mas_left).with.offset(10);
make.right.equalTo(self.view.mas_right).with.offset(-10);
make.bottom.equalTo(self.view.mas_bottom);
make.height.equalTo(@30);
}];
//4.输入框容器视图
UIView *inputContainerView = [UIView new];
inputContainerView.backgroundColor = [UIColor clearColor];
[self.view addSubview:inputContainerView];
[inputContainerView mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(self.view.mas_left).with.offset(10);
make.right.equalTo(self.view.mas_right).with.offset(-10);
make.top.equalTo(logoImageView.mas_bottom).with.offset(kScaleFrom_iPhone5_Desgin(20));
make.bottom.equalTo(companyImageView.mas_top).with.offset(kScaleFrom_iPhone5_Desgin(-15));
}];
//4.输入框容器视图背景图
UIImageView *inputImageView = [UIImageView new];
inputImageView.image = [UIImage imageNamed:@"backgroundImage"];
[inputContainerView addSubview:inputImageView];
[inputImageView mas_makeConstraints:^(MASConstraintMaker *make) {
make.edges.equalTo(inputContainerView);
}];
//5.输入框用户名
UITextField *userName = [UITextField new];
userName.background = [UIImage imageNamed:@"textfieldBackgroundImage"];
userName.placeholder =@"请输入用户名";
userName.font = [UIFont systemFontOfSize:18];
[inputContainerView addSubview:userName];
[userName mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(inputContainerView.mas_left).with.offset(5);
make.right.equalTo(inputContainerView.mas_right).with.offset(-5);
make.top.equalTo(inputContainerView.mas_top).with.offset(kScaleFrom_iPhone5_Desgin(15));
make.height.equalTo(@kScaleFrom_iPhone5_Desgin(40));
}];
//6.输入框用户名
UITextField *password = [UITextField new];
password.background = [UIImage imageNamed:@"textfieldBackgroundImage"];
password.placeholder =@"请输入密码";
password.font = [UIFont systemFontOfSize:18];
[inputContainerView addSubview:password];
[password mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(inputContainerView.mas_left).with.offset(5);
make.right.equalTo(inputContainerView.mas_right).with.offset(-5);
make.top.equalTo(userName.mas_bottom).with.offset(kScaleFrom_iPhone5_Desgin(15));
make.height.equalTo(@kScaleFrom_iPhone5_Desgin(40));
}];
//7.登陆
UIButton *loginBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[loginBtn setBackgroundImage:[UIImage imageNamed:@"登录"] forState:UIControlStateNormal];
[loginBtn addTarget:self action:@selector(loginBtnClick:) forControlEvents:UIControlEventTouchUpInside];
[inputContainerView addSubview:loginBtn];
[loginBtn mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(inputContainerView.mas_left).with.offset(5);
make.right.equalTo(inputContainerView.mas_right).with.offset(-5);
make.top.equalTo(password.mas_bottom).with.offset(kScaleFrom_iPhone5_Desgin(15));
make.height.equalTo(@kScaleFrom_iPhone5_Desgin(45));
}];
//8.记住密码
UILabel *remeberPassword = [UILabel new];
remeberPassword.backgroundColor = [UIColor clearColor];
remeberPassword.font = [UIFont systemFontOfSize:14];
remeberPassword.textColor = [UIColor brownColor];
remeberPassword.text = @"记住密码";
[inputContainerView addSubview:remeberPassword];
[remeberPassword mas_makeConstraints:^(MASConstraintMaker *make) {
make.height.equalTo(@24);
make.width.equalTo(@60);
make.top.equalTo(loginBtn.mas_bottom).with.offset(kScaleFrom_iPhone5_Desgin(10));
make.right.equalTo(inputContainerView.mas_right).with.offset(-5);
}];
UIButton *remeberBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[remeberBtn setBackgroundImage:[UIImage imageNamed:@"圆角矩形1"] forState:UIControlStateNormal];
[remeberBtn setBackgroundImage:[UIImage imageNamed:@"圆角矩形2"] forState:UIControlStateSelected];
[remeberBtn addTarget:self action:@selector(remeberBtnClick:) forControlEvents:UIControlEventTouchUpInside];
[inputContainerView addSubview:remeberBtn];
[remeberBtn mas_makeConstraints:^(MASConstraintMaker *make) {
make.height.equalTo(@24);
make.width.equalTo(@24);
make.top.equalTo(loginBtn.mas_bottom).with.offset(kScaleFrom_iPhone5_Desgin(10));
make.right.equalTo(remeberPassword.mas_left).with.offset(-5);
}];
}
github地址：https://github.com/JohnJin007/MyProjectDemo
