通讯录列表展示 UIView和tobar工具条使用

//
//  ViewController.h
//  08-通讯录
//
//  Created by zjj on 15/5/10.
//  Copyright (c) 2015年 zjj. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
- (IBAction)add:(UIBarButtonItem *)sender;
- (IBAction)remove:(UIBarButtonItem *)sender;
@property (strong, nonatomic) IBOutlet UIBarButtonItem *removes;

@end

//
//  ViewController.m
//  08-通讯录
//
//  Created by zjj on 15/5/10.
//  Copyright (c) 2015年 zjj. All rights reserved.
//

#import "ViewController.h"
#define kDuation 0.5
#define kRowH 50
#define kNameTag 10
//类扩展 （class extension 匿名分类）用于扩展 内部可以声明本类全局引用私有变量
@interface ViewController ()
{
    CGFloat _rowY ;
    NSArray *_allNames; // 苹果官方规则成员变量必须以下划线开头
}
@end

@implementation ViewController
#pragma mark 控制器的view加载完毕的时候调用一次
- (void)viewDidLoad
{
    [super viewDidLoad];
    _allNames = @[@"加菲猫吃饭",@"加菲猫打瞌睡",@"加菲猫喝茶",@"加菲猫乘地铁",@"加菲猫敲代码",@"加菲猫打电话",@"加菲猫听音乐",@"加菲猫起床",@"加菲猫奶孩子"];

}
#pragma mark 添加一行
- (IBAction)add:(UIBarButtonItem *)sender {
    // 0取出最后一个子控件
    UIView *lastView = [self.view.subviews lastObject];
    // 这行的Y =  最后一个控件的Y值+控件的高度+间距
    _rowY = lastView.frame.origin.y + lastView.frame.size.height + 5;
    // 创建一行
    UIView *rowView = [self createRowline];
    // 添加一行到控制器view中
    [self.view addSubview:rowView ];
    _removes.enabled = YES;// 启用删除
    // 设置动画开始前的控件属性
    rowView.frame = CGRectMake(375, _rowY, 375, 50);
    rowView.alpha = 0;// 设置透明度
    // 执行动画
    [UIView animateWithDuration:kDuation animations:^{
        // 改变控件属性
        rowView.frame = CGRectMake(0, _rowY, 375, 50);
        rowView.alpha = 1;
    }];
}
#pragma mark 创建一行 添加头像和文字
- (UIView *)createRowline
{
    // 1.添加父控件
    UIView *rowView = [[UIView alloc]init];
    rowView.frame = CGRectMake(0, _rowY, 375, 50);
    rowView.backgroundColor  = [UIColor whiteColor];
    // 2.添加文字
    UILabel *name = [[UILabel alloc]init];
    name.frame = CGRectMake(0, 0, self.view.frame.size.width, kRowH);
    name.text = _allNames[arc4random_uniform((int)_allNames.count)];
    name.textAlignment = UITextAlignmentCenter;
    name.backgroundColor = [UIColor clearColor];
    name.tag = kNameTag;
    [rowView addSubview:name];
    // 3.添加头像 创建子控件 添加到父控件行中
    UIButton *icon = [UIButton buttonWithType:UIButtonTypeCustom];
    icon.frame = CGRectMake(20, 0, 50, kRowH);
    //创建随机头像
//    int randomIndex = arc4random() % 9;//取0-8随机整数（老写法）
    int randomIndex = arc4random_uniform(9);//取0-8随机整数
    NSString *imgNames = [NSString stringWithFormat:@"0%d.jpg",randomIndex];
    UIImage *img = [UIImage imageNamed:imgNames];
    // 给按钮添加监听器
    [icon addTarget:self action:@selector(iconClick:) forControlEvents:UIControlEventTouchUpInside];
    //保持头像宽高不变形
    [icon setImage:img forState:UIControlStateNormal];
    [rowView addSubview:icon];
    // 删除按钮
    UIButton *delete = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    delete.frame = CGRectMake(320, 0, 60, 60);
    [delete setTitle:@"删除" forState:UIControlStateNormal];
    [delete addTarget:self action:@selector(delClick:) forControlEvents:UIControlEventTouchUpInside];
    [rowView addSubview:delete];
    return rowView;
}
#pragma mark 监听删除按钮点击
- (void)delClick :(UIButton *)btn
{
    [UIView animateWithDuration:kDuation animations:^{
        // 移动待删除行整体移动到右方
        CGRect  tempF = btn.superview.frame;
        tempF.origin.x = 375;
        btn.superview.frame = tempF;
        btn.superview.alpha = 0;
    } completion:^(BOOL finished) {
        // 1.获得即将删除这行 仔数组中的位置
        int startIndex = (int)[self.view.subviews indexOfObject:btn.superview];
        // 3.删除当前行
        [btn.superview removeFromSuperview];
        [UIView animateWithDuration:kDuation animations:^{
        // 2.遍历子控件 自动上移删除行下方子控件
        for (int i = startIndex; i < self.view.subviews.count; i++) {
            UIView *child = self.view.subviews[i];
            CGRect tempF = child.frame;
            tempF.origin.y -= kRowH + 1;// 添加时候是每行+1
            child.frame = tempF;
        }
        }];
        // 4.判断垃圾桶
        _removes.enabled = self.view.subviews.count > 1;
    }];
}
#pragma mark 监听头像点击
- (void)iconClick :(UIButton *)btn
{
    // 1.取得按钮的父控件（因为lable和btn在同一父控件）
    // 获得按钮点击行的文本标签
    UILabel *label = (UILabel *)[btn.superview viewWithTag:10];
//    NSLog(@"iconClick%f",btn.superview.frame.origin.y);
    NSLog(@"%@",label.text);
}

#pragma mark 删除一行
- (IBAction)remove:(UIBarButtonItem *)sender {
    UIView *lastView = [self.view.subviews lastObject];
    [UIView animateWithDuration:kDuation animations:^{
        CGRect tempF = lastView.frame;
        tempF.origin.x = 375;
        lastView.frame = tempF;
        lastView.alpha = 1;
    } completion:^(BOOL finished) {//动画执行完毕后自动调用这个代码段
             [lastView removeFromSuperview];
        // 剩下子控件个数大于1才能点击删除 c语言写法
        _removes.enabled = self.view.subviews.count > 1;
    }];
}
@end