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[置頂]iOS - Masonry使用中的一些整理

標(biāo)簽：iOS資源大全 iOS常用方法 iOS學(xué)習(xí)資料 Masonry使用

2016-07-19 20:2211213人閱讀評(píng)論（0）收藏舉報(bào)

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iOS的開(kāi)發(fā)（484）

目錄（？）[+]

個(gè)人喜歡用純代碼寫(xiě)東西，其中用到最多的就是砌體，我整理一些使用過(guò)程中一些點(diǎn)，方便以后使用。（基本的語(yǔ)法就不說(shuō)了）

首先說(shuō)幾點(diǎn)：

我一般將數(shù)值類(lèi)型的約束用mas_equalTo，而相對(duì)于某個(gè)控件，或者某個(gè)控件的某個(gè)約束，我會(huì)使用equalTo，如：

make.size.mas_equalTo(CGSizeMake(100, 100));

make.center.equalTo(weakSelf.view);

setNeedsLayout：告知頁(yè)面需要更新，但是不會(huì)立刻開(kāi)始更新。執(zhí)行后會(huì)立刻調(diào)用layoutSubviews

layoutIfNeeded。：告知頁(yè)面布局立刻更新。如此setNeedsLayout希望立刻生成新的框架需要調(diào)用此方法，利用這點(diǎn)一般布局動(dòng)畫(huà)可以在更新布局后直接使用這個(gè)方法讓動(dòng)畫(huà)生效

layoutSubviews：系統(tǒng)重寫(xiě)布局

setNeedsUpdateConstraints：告知需要更新約束，但是不會(huì)立刻開(kāi)始

updateConstraintsIfNeeded：告知立刻更新約束

updateConstraints：系統(tǒng)更新約束

- (void)updateViewConstraintsViewController的查看在更新視圖布局時(shí)，會(huì)先調(diào)用ViewController的updateViewConstraints方法。我們可以通過(guò)重寫(xiě)這個(gè)方法去更新當(dāng)前查看的內(nèi)部布局，而不用再繼承這個(gè)查看去重寫(xiě)-updateConstraints方法我們?cè)谥貙?xiě)這個(gè)方法時(shí)，務(wù)必要調(diào)用super或者調(diào)用當(dāng)前View的-updateConstraints方法。

視圖居中顯示

// 防止block中的循環(huán)引用__weaktypeof(self) weakSelf =self;UIView* view? ? ? ? = [UIViewnew];view.backgroundColor= [UIColorbrownColor];[self.viewaddSubview:view];//使用mas_makeConstraints添加約束[view mas_makeConstraints:^(MASConstraintMaker *make) {// 添加大小約束（make就是要添加約束的控件view）make.size.mas_equalTo(CGSizeMake(200,200));// 添加居中約束（居中方式與self相同）make.center.equalTo(weakSelf.view);}];

兩個(gè)視圖等寬高邊距

UIView* blackView? ? ? = [UIViewnew];blackView.backgroundColor= [UIColorblackColor];[self.viewaddSubview:blackView];[blackView mas_makeConstraints:^(MASConstraintMaker *make) {//添加約束大小make.size.mas_equalTo(CGSizeMake(100,100));//在左,上添加約束 (左、上約束都是20）make.left.and.top.mas_equalTo(20);}];UIView* grayView? ? ? ? = [UIViewnew];grayView.backgroundColor= [UIColorlightGrayColor];[self.viewaddSubview:grayView];[grayView mas_makeConstraints:^(MASConstraintMaker *make) {// 大小、上邊距約束與黑色view相同make.size.and.top.equalTo(blackView);// 添加右邊距約束（這里的間距是有方向性的，左、上邊距約束為正數(shù)，右、下邊距約束為負(fù)數(shù)）make.right.mas_equalTo(-20);}];

鍵盤(pán)彈出和收回

- (void)dealloc {[[NSNotificationCenterdefaultCenter] removeObserver:self];}- (void)viewDidLoad {[superviewDidLoad];// Do any additional setup after loading the view.__weaktypeof(self) weakSelf =self;_textField? ? ? ? ? ? ? ? = [UITextFieldnew];_textField.backgroundColor= [UIColorredColor];[self.viewaddSubview:_textField];[_textField mas_makeConstraints:^(MASConstraintMaker *make) {//left,right,centerx,y? 不能共存只能有其二make.left.mas_equalTo(20);//? ? ? ? make.right.mas_equalTo(-60);make.centerX.equalTo(weakSelf.view);make.height.mas_equalTo(40);make.bottom.mas_equalTo(0);}];// 注冊(cè)鍵盤(pán)通知[[NSNotificationCenterdefaultCenter] addObserver:selfselector:@selector(keyboardWillChangeFrameNotification:) name:UIKeyboardWillChangeFrameNotificationobject:nil];[[NSNotificationCenterdefaultCenter] addObserver:selfselector:@selector(keyboardWillHideNotification:) name:UIKeyboardWillHideNotificationobject:nil];}- (void)keyboardWillChangeFrameNotification:(NSNotification*)notification {// 獲取鍵盤(pán)基本信息（動(dòng)畫(huà)時(shí)長(zhǎng)與鍵盤(pán)高度）NSDictionary*userInfo = [notification userInfo];CGRectrect = [userInfo[UIKeyboardFrameBeginUserInfoKey]CGRectValue];CGFloatkeyboardHeight? =CGRectGetHeight(rect);CGFloatkeyboardDuration = [userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];// 修改下邊距約束[_textField mas_updateConstraints:^(MASConstraintMaker *make) {make.bottom.mas_equalTo(-keyboardHeight);}];// 更新約束[UIViewanimateWithDuration:keyboardDuration animations:^{[self.viewlayoutIfNeeded];}];}- (void)keyboardWillHideNotification:(NSNotification*)notification {// 獲得鍵盤(pán)動(dòng)畫(huà)時(shí)長(zhǎng)NSDictionary*userInfo? = [notification userInfo];CGFloatkeyboardDuration = [userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];// 修改為以前的約束（距下邊距0）[_textField mas_updateConstraints:^(MASConstraintMaker *make) {make.bottom.mas_equalTo(0);}];// 更新約束[UIViewanimateWithDuration:keyboardDuration animations:^{[self.viewlayoutIfNeeded];}];}- (void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event {[supertouchesBegan:touches withEvent:event];[self.viewendEditing:YES];}

三控件等寬間距

方法一：

array 的 mas_distributeViewsAlongAxis withFixedSpacing變化的是控件長(zhǎng)度或?qū)挾?/p>

定義一個(gè)存放三個(gè)控件的數(shù)組NSArray *array;

array = @[greenView,redView,blueView];

直接調(diào)用下面的方法：

- (void)getHorizontalone{//方法一,array 的 mas_distributeViewsAlongAxis/**

*? 多個(gè)控件固定間隔的等間隔排列，變化的是控件的長(zhǎng)度或者寬度值

*? @param axisType? ? ? ? 軸線方向

*? @param fixedSpacing? ? 間隔大小

*? @param leadSpacing? ? 頭部間隔

*? @param tailSpacing? ? 尾部間隔

*///? ? MASAxisTypeHorizontal? 水平//? ? MASAxisTypeVertical? ? 垂直[arrayList mas_distributeViewsAlongAxis:MASAxisTypeHorizontalwithFixedSpacing:20leadSpacing:5tailSpacing:5];[arrayList mas_makeConstraints:^(MASConstraintMaker *make) {make.top.mas_equalTo(60);make.height.mas_equalTo(100);}];

}

方法二：

array de mas_distributeViewsAlongAxis withFixedItemLength控件的大小不變，變化的是間隙

- (void)getVertical{/**

*? 多個(gè)固定大小的控件的等間隔排列,變化的是間隔的空隙

*? @param axisType? ? ? ? 軸線方向

*? @param fixedItemLength 每個(gè)控件的固定長(zhǎng)度或者寬度值

*? @param leadSpacing? ? 頭部間隔

*? @param tailSpacing? ? 尾部間隔

*/[arrayList mas_distributeViewsAlongAxis:MASAxisTypeVerticalwithFixedItemLength:60leadSpacing:40tailSpacing:10];[arrayList mas_makeConstraints:^(MASConstraintMaker *make) {//? ? ? ? make.top.mas_equalTo(100);//? ? ? ? make.height.mas_equalTo(100);make.left.mas_equalTo(20);make.right.mas_equalTo(-20);}];

}

倆以上都方法在NSArray+MASAdditions中

方法三：設(shè)置直接multiplier實(shí)現(xiàn)等間距

for(NSUIntegeri =0; i <4; i++) {UIView*itemView = [selfgetItemViewWithIndex:i];[_containerView addSubview:itemView];[itemView mas_makeConstraints:^(MASConstraintMaker *make) {make.width.and.height.equalTo(@(ITEM_SIZE));make.centerY.equalTo(_containerView.mas_centerY);make.centerX.equalTo(_containerView.mas_right).multipliedBy(((CGFloat)i +1) / ((CGFloat)ITEM_COUNT +1));}];}

方法四：利用透明等寬度的SpaceView實(shí)現(xiàn)等間距

UIView*lastSpaceView? ? ? = [UIViewnew];lastSpaceView.backgroundColor= [UIColorgreenColor];[_containerView1 addSubview:lastSpaceView];[lastSpaceView mas_makeConstraints:^(MASConstraintMaker *make) {make.left.and.top.and.bottom.equalTo(_containerView1);}];for(NSUIntegeri =0; i < ITEM_COUNT; i++) {UIView*itemView = [selfgetItemViewWithIndex:i];[_containerView1 addSubview:itemView];[itemView mas_makeConstraints:^(MASConstraintMaker *make) {make.height.and.width.equalTo(@(ITEM_SIZE));make.left.equalTo(lastSpaceView.mas_right);make.centerY.equalTo(_containerView1.mas_centerY);}];UIView*spaceView? ? ? ? = [UIViewnew];spaceView.backgroundColor= [UIColorgreenColor];[_containerView1 addSubview:spaceView];[spaceView mas_makeConstraints:^(MASConstraintMaker *make) {make.left.equalTo(itemView.mas_right).with.priorityHigh();// 降低優(yōu)先級(jí)，防止寬度不夠出現(xiàn)約束沖突make.top.and.bottom.equalTo(_containerView1);make.width.equalTo(lastSpaceView.mas_width);}];lastSpaceView = spaceView;}[lastSpaceView mas_makeConstraints:^(MASConstraintMaker *make) {make.right.equalTo(_containerView1.mas_right);}];

動(dòng)態(tài)改變字體寬度

和面方法4一樣，利用spaceView來(lái)實(shí)現(xiàn)

UIView* bgView? ? ? = [[UIViewalloc]init];bgView.backgroundColor= [UIColoryellowColor];[self.viewaddSubview:bgView];[bgView mas_makeConstraints:^(MASConstraintMaker *make) {make.left.and.right.mas_equalTo(0);make.top.mas_equalTo(@100);make.height.mas_equalTo(@100);}];listText = @[@"北京",@"地大吳波啊",@"你大爺",@"我們的愛(ài)哎哎"];UIView*lastSpaceView =nil;for(inti =0; i < listText.count;? i ++){UILabel* label = [UILabelnew];label.text= listText[i];label.backgroundColor= RANDOMCOLOR;[bgView addSubview:label];

UIView* lineView? ? ? ? = [UIViewnew];lineView.backgroundColor= [UIColorredColor];[bgView addSubview:lineView];[label mas_makeConstraints:^(MASConstraintMaker *make) {make.top.bottom.mas_equalTo(0);if(lastSpaceView){NSLog(@"存在 lastView");make.left.equalTo(lastSpaceView.mas_right).mas_offset(@20);}else{NSLog(@"不存在存在 lastView");make.left.equalTo(bgView.mas_left);}make.height.equalTo(bgView);}];lastSpaceView = label;[lineView mas_makeConstraints:^(MASConstraintMaker *make) {make.top.and.bottom.mas_equalTo(0);make.width.mas_equalTo(1);make.left.mas_equalTo(label.mas_right).mas_offset(@10);}];}

效果圖：

父視圖的高度，是里面?zhèn)z控制高度的和

UIView* bgView? ? ? = [UIViewnew];bgView.backgroundColor= [UIColorpurpleColor];[self.viewaddSubview:bgView];UILabel* titleLab? ? ? ? = [UILabelnew];titleLab.backgroundColor= [UIColorredColor];titleLab.textAlignment=NSTextAlignmentCenter;titleLab.font= [UIFontsystemFontOfSize:15.f];titleLab.text=@"曹操——《短歌行》";[bgView addSubview:titleLab];UILabel* contentLab? ? ? ? = [UILabelnew];contentLab.numberOfLines=0;contentLab.textAlignment=NSTextAlignmentCenter;contentLab.backgroundColor= [UIColorbrownColor];contentLab.font= [UIFontsystemFontOfSize:13.f];contentLab.text=@" 對(duì)酒當(dāng)歌，人生幾何？譬如朝露，去日苦多。\n 慨當(dāng)以慷，憂思難忘。何以解憂？唯有杜康。\n 青青子衿，悠悠我心。但為君故，沉吟至今。\n 呦呦鹿鳴，食野之蘋(píng)。我有嘉賓，鼓瑟吹笙。\n 明明如月，何時(shí)可掇？憂從中來(lái)，不可斷絕。\n 越陌度阡，枉用相存。契闊談宴，心念舊恩。\n 月明星稀，烏鵲南飛。繞樹(shù)三匝，何枝可依？\n 山不厭高，海不厭深。周公吐哺，天下歸心。";[bgView addSubview:contentLab];//思路: 父視圖的上間距等于title的上間距,父視圖的下間距等于content的下間距__weaktypeof(self) weakSelf =self;[bgView mas_makeConstraints:^(MASConstraintMaker *make) {make.left.mas_offset(@30);make.right.mas_offset(@-30);make.centerY.equalTo(weakSelf.view);}];[titleLab mas_makeConstraints:^(MASConstraintMaker *make) {make.left.top.right.mas_equalTo(@0);}];[contentLab mas_makeConstraints:^(MASConstraintMaker *make) {make.left.right.mas_equalTo(@0);make.top.equalTo(titleLab.mas_bottom).mas_offset(@10);make.bottom.equalTo(bgView);}];

效果圖：