出發(fā)點(diǎn)

每次添加控件都需要addSubview:
其次控件的屬性設(shè)置、方法經(jīng)?？绾瘮?shù)，無(wú)法快速查找

對(duì)比

常規(guī)設(shè)置

    self.titleLabel = [[UILabel alloc]init];
    self.titleLabel.translatesAutoresizingMaskIntoConstraints = NO;
    self.titleLabel.textColor = [UIColor darkTextColor];
    self.titleLabel.textAlignment = NSTextAlignmentCenter;
    self.titleLabel.font = [UIFont systemFontOfSize:20];
    [self.navView addSubview:self.titleLabel];
    self.titleLabel.hh_centerX = 0;
    self.titleLabel.hh_centerY = 0;
    self.titleLabel.hh_centerYCS.constant = 11;

優(yōu)化后

    [self.view hh_addLabel:^(UILabel *label) {
        self.label = label;
        label.textColor = [UIColor redColor];
        label.font = [UIFont systemFontOfSize:15];
        label.textAlignment = NSTextAlignmentCenter;
    } constraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.view).offset(100);
        make.centerX.equalTo(self.view);
    }];

button：方法

    [self.view hh_addButton:^(UIButton *button) {
        self.button = button;
        [button setImage:[UIImage imageNamed:@"action_picture"] forState:UIControlStateNormal];
    } action:^(UIButton *sender) {//button點(diǎn)擊事件
        NSLog(@"點(diǎn)擊了按鈕");
    } constraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.label).offset(50);
        make.centerX.equalTo(self.view);
    }];

textField：方法

    [self.view hh_addTextField:^(UITextField *textField) {
        self.textField = textField;
        textField.borderStyle = UITextBorderStyleRoundedRect;
        textField.placeholder = @"請(qǐng)輸入文字，不超過(guò)十個(gè)字";
        [textField setValue:[UIColor lightGrayColor] forKeyPath:@"_placeholderLabel.textColor"];
        textField.maxCharacters = 10;//設(shè)置最大字?jǐn)?shù)
    } action:^(UITextField *textField, BOOL isOverMax) {//字?jǐn)?shù)改變回調(diào)
        NSLog(@"isOverMax==YES,超過(guò)了字?jǐn)?shù)限制");
    } constraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.button.mas_bottom).offset(50);
        make.centerX.equalTo(self.view);
    }];

說(shuō)明

1、為何第一個(gè)屬性設(shè)置block不需要弱引用，此和masonry等同，并沒(méi)有對(duì)象引用block，屬性設(shè)置之后就會(huì)被釋放。
2、action事件以對(duì)象的內(nèi)存地址為key存儲(chǔ)在actionDict中，actionblock中需要使用弱引用。當(dāng)然也可以不用，只需要打破環(huán)路即可，把視圖的actionDict置為nil即可，詳見(jiàn)Demo。在基類調(diào)用如下函數(shù)：

- (void)viewDidDisappear:(BOOL)animated
{
    [super viewDidDisappear:animated];
    if (!self.navigationController.topViewController)///過(guò)濾非銷毀的視圖，如push進(jìn)來(lái)的上層界面
    [self enumSubViewsTree:self.view];
}
- (void)enumSubViewsTree:(UIView *)view
{//遞歸遍歷子控件，把存有block的actionDict置為nil
    if (view.actionDict) view.actionDict = nil;
    for (UIView *subV in view.subviews)[self enumSubViewsTree:subV];
}

3、此分類包含了常用的控件，需要依賴第三方框架masonry
4、之所以為務(wù)虛篇，是因?yàn)榇朔诸惒](méi)有改變實(shí)際的代碼量，只是以高內(nèi)聚的形式展示，聚合了屬性，事件以及約束。

下載地址：Demo地址