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## 一:效果 ![](https://box.kancloud.cn/2016-01-20_569f1d9a17e42.jpg) ## 二:封装好的工具条 ### NYComposeToolbar.h 带代理方法 ~~~ #import <UIKit/UIKit.h> typedef enum { NYComposeToolbarButtonTypeCamera, // 拍照 NYComposeToolbarButtonTypePicture, // 相册 NYComposeToolbarButtonTypeMention, // @ NYComposeToolbarButtonTypeTrend, // # NYComposeToolbarButtonTypeEmotion // 表情 } NYComposeToolbarButtonType; @class NYComposeToolbar; @protocol NYComposeToolbarDelegate <NSObject> @optional - (void)composeToolbar:(NYComposeToolbar *)toolbar didClickButton:(NYComposeToolbarButtonType)buttonType; @end @interface NYComposeToolbar : UIView @property (nonatomic, weak) id<NYComposeToolbarDelegate> delegate; @end ~~~ ### NYComposeToolbar.m ~~~ // // NYComposeToolbar.m // 黑马微博2期 // // Created by apple on 14-10-20. // Copyright (c) 2014年 heima. All rights reserved. // #import "NYComposeToolbar.h" @implementation NYComposeToolbar - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { self.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"compose_toolbar_background"]]; // 初始化按钮 [self setupBtn:@"compose_camerabutton_background" highImage:@"compose_camerabutton_background_highlighted" type:NYComposeToolbarButtonTypeCamera]; [self setupBtn:@"compose_toolbar_picture" highImage:@"compose_toolbar_picture_highlighted" type:NYComposeToolbarButtonTypePicture]; [self setupBtn:@"compose_mentionbutton_background" highImage:@"compose_mentionbutton_background_highlighted" type:NYComposeToolbarButtonTypeMention]; [self setupBtn:@"compose_trendbutton_background" highImage:@"compose_trendbutton_background_highlighted" type:NYComposeToolbarButtonTypeTrend]; [self setupBtn:@"compose_emoticonbutton_background" highImage:@"compose_emoticonbutton_background_highlighted" type:NYComposeToolbarButtonTypeEmotion]; } return self; } /** * 创建一个按钮 */ - (void)setupBtn:(NSString *)image highImage:(NSString *)highImage type:(NYComposeToolbarButtonType)type { UIButton *btn = [[UIButton alloc] init]; [btn setImage:[UIImage imageNamed:image] forState:UIControlStateNormal]; [btn setImage:[UIImage imageNamed:highImage] forState:UIControlStateHighlighted]; [btn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside]; btn.tag = type; [self addSubview:btn]; } - (void)layoutSubviews { [super layoutSubviews]; // 设置所有按钮的frame NSUInteger count = self.subviews.count; CGFloat btnW = self.width / count; CGFloat btnH = self.height; for (NSUInteger i = 0; i<count; i++) { UIButton *btn = self.subviews[i]; btn.y = 0; btn.width = btnW; btn.x = i * btnW; btn.height = btnH; } } - (void)btnClick:(UIButton *)btn { if ([self.delegate respondsToSelector:@selector(composeToolbar:didClickButton:)]) { // NSUInteger index = (NSUInteger)(btn.x / btn.width); [self.delegate composeToolbar:self didClickButton:btn.tag]; } } @end ~~~ ## 三:调用 设置代理并且实现代理方法 ~~~ /** * 添加工具条 */ - (void)setupToolbar { NYComposeToolbar *toolbar = [[NYComposeToolbar alloc] init]; toolbar.width = self.view.width; toolbar.height = 44; toolbar.y = self.view.height - toolbar.height; toolbar.delegate = self; [self.view addSubview:toolbar]; self.toolbar = toolbar; } ~~~ 代理方法 ~~~ #pragma mark - NYComposeToolbarDelegate - (void)composeToolbar:(NYComposeToolbar *)toolbar didClickButton:(NYComposeToolbarButtonType)buttonType { switch (buttonType) { case NYComposeToolbarButtonTypeCamera: // 拍照 // [self openCamera]; NYLog(@"--- 拍照"); break; case NYComposeToolbarButtonTypePicture: // 相册 NYLog(@"--- 相册"); // [self openAlbum]; break; case NYComposeToolbarButtonTypeMention: // @ NYLog(@"--- @"); break; case NYComposeToolbarButtonTypeTrend: // # NYLog(@"--- #"); break; case NYComposeToolbarButtonTypeEmotion: // 表情\键盘 NYLog(@"--- 表情"); break; } } ~~~