ios底部菜单栏设置（ios下拉菜单栏怎么设置）

-本安全出自个人小项目仿boss直聘当中的聊天信息界面：

实现的思路主要是：约束动画。

实现较简单，这里直接上代码：

。h文件：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 #import <UIKit/UIKit.h> @protocol ShowMoreOptionListener <NSObject> @optional -(void) onChangListener; @end @class ScrollView; /** 底部菜单视图 */ @interface BottomMenuView : UIView @property(nonatomic,strong) UIView* showPartView; //总是可见部分 @property(nonatomic,strong) UIView* hiddenPartView; //底部隐藏部分，需要点击显示部分才能显示出来 @property(nonatomic,weak) id<ShowMoreOptionListener> delegate; //下面更多操作菜单的的状态代理器 @property(nonatomic,strong) ScrollView* emojiPanel; -(void) buildOptionMenu; @end

.m文件：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 #import "BottomMenuView.h" #import "Masonry.h" #import "QuickWordsView.h" #import "ScrollView.h" #import "Constants.h" static const int QuickChat = 31; static const int Emoji = 32; static const int AddType = 33; static const int EmojiPanel = 34; static const int QuickChatPanel = 34; @implementation BottomMenuView -(instancetype) initWithFrame:(CGRect)frame{ if(self = [super initWithFrame:frame]){} return self; } -(void) buildOptionMenu{ self.showPartView = [[UIView alloc] init]; //self.showPartView.backgroundColor = [UIColor greenColor]; [self addSubview:self.showPartView]; //添加showPartView约束 [self.showPartView mas_makeConstraints:^(MASConstraintMaker *make) { make.right.equalTo(self).offset(0); make.top.equalTo(self); make.left.equalTo(self); make.height.mas_equalTo(40); }]; UIButton* showQuickWordsBtn = [[UIButton alloc] init]; [showQuickWordsBtn setImage:[UIImage imageNamed:@"ic_chat_input_method"] forState:UIControlStateNormal]; showQuickWordsBtn.imageView.contentMode = UIViewContentModeScaleAspectFit; showQuickWordsBtn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft; showQuickWordsBtn.imageEdgeInsets = UIEdgeInsetsMake(0, -10, 0, 0); showQuickWordsBtn.tag = QuickChat; [showQuickWordsBtn addTarget:self action:@selector(onClick:) forControlEvents:UIControlEventTouchUpInside]; [self.showPartView addSubview:showQuickWordsBtn]; [showQuickWordsBtn mas_makeConstraints:^(MASConstraintMaker *make) { make.leading.equalTo(self.showPartView).offset(0); make.top.equalTo(self.showPartView); make.size.mas_equalTo(CGSizeMake(90, 40)); }]; //中间编辑框 UITextView* editText = [[UITextView alloc] init]; [self.showPartView addSubview:editText]; [editText mas_makeConstraints:^(MASConstraintMaker *make) { make.leading.equalTo(showQuickWordsBtn.mas_trailing).offset(-10); make.centerY.equalTo(showQuickWordsBtn.mas_centerY); make.height.mas_equalTo(37); make.trailing.equalTo(self.showPartView).offset(-100); }]; //设置编辑框底部线 UIView* editTextbottomLine = [[UIView alloc] init]; editTextbottomLine.backgroundColor = [UIColor blackColor]; [self.showPartView addSubview:editTextbottomLine]; [editTextbottomLine mas_makeConstraints:^(MASConstraintMaker *make) { make.leading.equalTo(showQuickWordsBtn.mas_trailing).offset(-10); make.top.equalTo(showQuickWordsBtn.mas_bottom); make.height.mas_equalTo(1.0); make.trailing.equalTo(self.showPartView).offset(-100); }]; //创建表情 UIButton* emojiBtn = [[UIButton alloc] init]; [emojiBtn setImage:[UIImage imageNamed:@"ic_emoji.png"] forState:UIControlStateNormal]; emojiBtn.imageView.contentMode = UIViewContentModeScaleAspectFit; emojiBtn.tag = Emoji; [emojiBtn addTarget:self action:@selector(onClick:) forControlEvents:UIControlEventTouchUpInside]; [self addSubview:emojiBtn]; [emojiBtn mas_makeConstraints:^(MASConstraintMaker *make) { make.leading.equalTo(editText.mas_trailing).offset(5); make.centerY.equalTo(self.showPartView.mas_centerY); make.size.mas_equalTo(CGSizeMake(38, 38)); }]; //创建+btn UIButton* addBtn = [[UIButton alloc] init]; [addBtn setImage:[UIImage imageNamed:@"ic_gallery_add.png"] forState:UIControlStateNormal]; addBtn.imageView.contentMode = UIViewContentModeScaleAspectFit; addBtn.tag = AddType; [addBtn addTarget:self action:@selector(onClick:) forControlEvents:UIControlEventTouchUpInside]; [self addSubview:addBtn]; [addBtn mas_makeConstraints:^(MASConstraintMaker *make) { make.right.equalTo(self.showPartView).offset(-10); make.centerY.equalTo(self.showPartView.mas_centerY); make.size.mas_equalTo(CGSizeMake(38, 38)); }]; //设置永久显示底部线 UIView* bottomLine = [[UIView alloc] init]; bottomLine.backgroundColor = [UIColor blackColor]; [self.showPartView addSubview:bottomLine]; [bottomLine mas_makeConstraints:^(MASConstraintMaker *make) { make.leading.equalTo(showQuickWordsBtn); make.top.equalTo(self.showPartView.mas_bottom).offset(5); make.height.mas_equalTo(1.0); make.trailing.equalTo(self.showPartView.mas_trailing); }]; // //下面开始处理隐藏部分，默认显示快捷消息 // QuickWordsView* quickWordsView = [[QuickWordsView alloc] init]; // quickWordsView.separatorInset = UIEdgeInsetsMake(0,10,0,10); //top left right down // quickWordsView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero]; //删除底部多余行，及分割线 // quickWordsView.tag = 100; // [self addSubview:quickWordsView]; // [quickWordsView mas_makeConstraints:^(MASConstraintMaker *make) { // make.leading.equalTo(self); // make.trailing.equalTo(self.mas_trailing); // make.top.equalTo(self.mas_top).offset(47); // make.height.mas_equalTo(210); // // }]; [self buildQuickChat]; } -(void)onClick:(UIButton*) button{ switch(button.tag){ case QuickChat:{ if(self.delegate){ [self.delegate onChangListener]; } }break; case Emoji:{ }break; case AddType:{ }break; } } -(void) buildQuickChat{ //下面开始处理隐藏部分，默认显示快捷消息 QuickWordsView* quickWordsView = [[QuickWordsView alloc] init]; quickWordsView.separatorInset = UIEdgeInsetsMake(0,10,0,10); //top left right down quickWordsView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero]; //删除底部多余行，及分割线 quickWordsView.tag = QuickChatPanel; [self addSubview:quickWordsView]; [quickWordsView mas_makeConstraints:^(MASConstraintMaker *make) { make.leading.equalTo(self); make.trailing.equalTo(self.mas_trailing); make.top.equalTo(self.mas_top).offset(47); make.height.mas_equalTo(210); }]; } //-------------------kvo 实现观察主题 end---------------- @end

测试代码：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 -(void) testBottomMenu{ self.menu = [[BottomMenuView alloc] init]; self.menu.translatesAutoresizingMaskIntoConstraints = NO; //self.menu.backgroundColor = [UIColor redColor]; [self.menu buildOptionMenu]; self.menu.delegate = self; [self.view addSubview:self.menu]; //使用约束来达到效果，下面开始添加约束靠着底部 NSLayoutConstraint* alginBottom = [NSLayoutConstraint constraintWithItem:self.menu attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeBottom multiplier:1 constant:0.0]; [self.view addConstraint:alginBottom]; //添加高度 self.bottomHeightCons = [NSLayoutConstraint constraintWithItem:self.menu attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:0 multiplier:1 constant:260]; [self.menu addConstraint:self.bottomHeightCons]; //添加右边约束 NSLayoutConstraint* rightMargin = [NSLayoutConstraint constraintWithItem:self.menu attribute:NSLayoutAttributeRight relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeRight multiplier:1 constant:0.0]; [self.view addConstraint:rightMargin]; //添加左边约束 NSLayoutConstraint* leftMargin = [NSLayoutConstraint constraintWithItem:self.menu attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeLeft multiplier:1 constant:0.0]; [self.view addConstraint:leftMargin]; } //更多操作按钮的协议监听接口 -(void)onChangListener{ //[self.view layoutIfNeeded]; if(self.bottomHeightCons.constant == 40){ self.bottomHeightCons.constant = 260; }else{ self.bottomHeightCons.constant = 40; } [UIView animateWithDuration:0.5 animations:^{ [self.view layoutIfNeeded]; }]; }