AJ学IOS 之微博项目实战(12)发送微博自定义工具条代理实现点击事件

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一：效果

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
// 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;
}

/** * 建立一个按钮 */
- (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];

    // 设置全部按钮的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

设置代理而且实现代理方法

/** * 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;
    }
}