IOS实现聊天界面底部菜单栏效果

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实现的思路主要是：约束动画。

IOS实现聊天界面底部菜单栏效果

实现较简单，这里直接上代码：

。h文件：

#import  
@protocol ShowMoreOptionListener  
@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 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：

#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：

-(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]; 
  }];    
}

总结

以上所述是小编给大家介绍的IOS实现聊天界面底部菜单栏效果，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对创新互联网站的支持！

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IOS实现聊天界面底部菜单栏效果

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