优点：快速创建 UI, 可以一行形式写代码，也相比原有 API 代码更紧凑、简便。
缺点：我认为链式语法在执行时相比原生执行要多调用很多方法，和创建多个 Block 对象。当然对于现在的 CPU、RAM 来说，这是微乎其微的，如果在意这些请不要使用。
代码示例
self.la = UILabel
.xmhNewAndSuperView(self.view)
.xmhTextAndTextColorAndFont(@"234567", UIColor.redColor, [UIFont systemFontOfSize:14])
.xmhTextAlignment(NSTextAlignmentCenter)
.xmhBackgroundColor(UIColor.blueColor)
.xmhCornerRadius(10)
.xmhBorderWidth(2)
.xmhBorderColor(UIColor.cyanColor)
.xmhMakeConstraints(^(MASConstraintMaker * make){
make.size.mas_equalTo(CGSizeMake(200, 44));
make.centerX.equalTo(self.view);
make.top.mas_equalTo(100);
});
self.button = UIButton
.xmhNewAndSuperView(self.view)
.xmhSetTitleAndColorAndFontAndState(@"title", UIColor.redColor, [UIFont systemFontOfSize:30], UIControlStateNormal)
.xmhSetBackgroundImageAndState([UIImage imageNamed:@"1"], UIControlStateNormal)
.xmhMakeConstraints(^(MASConstraintMaker * make){
make.size.mas_equalTo(CGSizeMake(200, 80));
make.top.equalTo(self.la.mas_bottom);
make.centerX.equalTo(self.view);
})
.xmhAddEvent(UIControlEventTouchUpInside, ^(UIButton *sender){
NSLog(@"UIControlEventTouchUpInside");
});
self.imageView = UIImageView
.xmhNewAndSuperView(self.view)
.xmhImage([UIImage imageNamed:@"1"])
.xmhMakeConstraints(^(MASConstraintMaker * make){
make.size.mas_equalTo(CGSizeMake(100, 100));
make.top.equalTo(self.button.mas_bottom);
make.centerX.equalTo(self.view);
});
self.textField = UITextField
.xmhNewAndSuperView(self.view)
.xmhText(@"text")
.xmhPlaceholder(@"place")
.xmhDelegate(self)
.xmhBackgroundColor(UIColor.orangeColor)
.xmhMakeConstraints(^(MASConstraintMaker * make){
make.size.mas_equalTo(CGSizeMake(200, 50));
make.top.equalTo(self.imageView.mas_bottom);
make.centerX.equalTo(self.view);
});
self.tableView = UITableView
.xmhNewAndSuperViewAndFrameAndStyleAndDelegate(self.view, CGRectMake(0, 0, 0, 0), UITableViewStylePlain, self)
.xmhMakeConstraints(^(MASConstraintMaker * make){
make.edges.equalTo(self.view);
});
由于链式语法以Block形式调用、传参。开发中直接调用 Xcode 并不能直接显示方法全名，所以我写了一套代码片段。调用时请使用前缀 xmh... 形式。 代码片段地址