iOS中实现plist中读取数据实现Cell的显示(字典转模型,实现按序分组)修改图片的尺寸

RootViewController.m

#import "RootViewController.h"
#import "UIImage+UIImageScale.h"
@interface RootViewController ()<UITableViewDataSource,UITableViewDelegate>
@property (nonatomic, retain) NSArray *apps;
//存放排好序的keys
@property (nonatomic, retain) NSMutableArray *keysArray;
//字典转模型
@property (nonatomic, retain) NSMutableDictionary *addressdic;
@end

@implementation RootViewController
//重写loadView ,将tableView指定为当前视图控制器的视图
- (void)loadView{
//1.创建UItableView类型的对象
    UITableView *tableView = [[UITableView alloc] initWithFrame:[UIScreen mainScreen].bounds style:UITableViewStylePlain];
//2.指定为视图控制器的根视图
    self.view = tableView;
    //设置数据源
    tableView.dataSource = self;
    //指定为视图的交互
    tableView.delegate = self;
    
//3.释放
    [tableView release];
}

- (void)viewDidLoad {
    [super viewDidLoad];
    //获取初始化数据
    [self readdataFormPlist];
    
    //配置导航条
    [self configureNavigationBarContent];
    

}
#pragma mark -- Editing UITableViewDataSourse
//设置tableView的那些行可以允许编辑
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath{

    return indexPath.section < 3 ? YES : NO;
}
#pragma mark - Edit UITableViewDelegate
//设置tableView行的编辑样式(插入/删除)
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath{
    return  indexPath.section < 2 ? UITableViewCellEditingStyleDelete : UITableViewCellEditingStyleInsert;
}
//提交编辑操作时,处理编辑操作
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath{
    //1.获取key值
    NSString *key = self.keysArray[indexPath.section];
    //获取删除行所在的数组
    NSMutableArray *group = self.addressdic[key];
    
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        //处理删除操作
        //判断是否需要删除一个分区(如果该分区只有一行,就删除整个分区,否则只删除一行)
        if (1 == group.count) {
            //删除整个分区
            //1.修改数据源
            //1.从字典中移除元素
            [self.addressdic removeObjectForKey:key];
            //2.从排好序的可以key值数组中移除对应的key
            [self.keysArray removeObject:key];
            //2.修改界面
            NSIndexSet *indexSet = [NSIndexSet indexSetWithIndex:indexPath.section];
            [tableView deleteSections:indexSet withRowAnimation:UITableViewRowAnimationRight];
            
            
        }else{
            //删除一行
            //1.修改数据源
            [group removeObjectAtIndex:indexPath.row];
            //2.修改界面
            [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationRight];
        }
    }else{
        //处理添加操作
        NSDictionary *dic = @{@"name":@"马云",@"gender":@"男",@"age":@"16",@"imageName":@"XDLG.png",@"motto":@"-群**成就一个男人",@"phoneNumber":@"123442342"};
        //1.修改数据源
        [group insertObject:dic atIndex:indexPath.row];
        //2.修改界面
        [tableView insertRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationRight];
    }
}

#pragma mark --实现delegate的代理 UITableViewDelegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    NSLog(@"触发了");
}
//设置删除时确认按钮的文字
- (NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath{
    return @"删除";
}
#pragma mark - moving UITableViewdataSource
//设置tableView哪些行可以移动
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath{
    return indexPath.section <= 2 ? YES : NO;
}
//提交移动操作
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath{
    //移动操作,只需要,修改数据源即可
    //1.获取行所在的数组
    NSMutableArray *groupArray = self.addressdic[self.keysArray[sourceIndexPath.section]];
    //2.获取对应行的数据,并且保存(要移动的那个人)
    //retain 是经典 当一个对象从集合中移除的时候 它的引用计数会减1 这些是集合自己管理的  ,retain 后当移除时  对象就不会被销毁.
    NSDictionary *dic = [groupArray[sourceIndexPath.row] retain];
     //3.从数组中原来的位置移除对应的元素
    [groupArray removeObjectAtIndex:sourceIndexPath.row];
    //4.将元素插入到新的位值中
    [groupArray insertObject:dic atIndex:destinationIndexPath.row];
    [dic release];
}
#pragma mark - moving UITavleViewDelegate
//当停止拖动的时候,可以实现阻止cell的跨区移动
- (NSIndexPath *)tableView:(UITableView *)tableView targetIndexPathForMoveFromRowAtIndexPath:(NSIndexPath *)sourceIndexPath toProposedIndexPath:(NSIndexPath *)proposedDestinationIndexPath{
    //sourceIndexPath cell移动之前的位置
    //proposedDestinationIndexPath cell 想要移动到的位置
    if (sourceIndexPath.section == proposedDestinationIndexPath.section) {
        return proposedDestinationIndexPath;
    }else{
        return sourceIndexPath;
    }
    
    
    
}





#pragma mark --实现数据源中的方法


//组
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
     return self.addressdic.count;

}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    //在其他方法中需要的的到数据中的图片和个数,所以要把数据源存在属性中
    NSString *key = self.keysArray[section];
    NSArray *persons = [self.addressdic valueForKey:key];
    return persons.count;
   
}



- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
  static NSString *ID = @"per";
   UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:ID] autorelease];
    }
    NSString *key = self.keysArray[indexPath.section];
    NSArray *persons = [self.addressdic valueForKey:key];
    NSDictionary *dic = persons[indexPath.row];
    
    NSString *strimage = dic[@"imageName"];
    NSString *strText = dic[@"name"];
    
    cell.imageView.image = [[UIImage imageNamed:strimage] scaleImageToSize:CGSizeMake(35, 40)];
    cell.textLabel.text = strText;
    cell.detailTextLabel.text = dic[@"phoneNumber"];
    return cell;
}
//设置分区title
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{
    return self.keysArray[section];
}
//设置分区索引
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView{
    return self.keysArray;
}

//初始化数据
- (void)readdataFormPlist
{
    //1.获取本地文件
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"ContactBook.plist" ofType:nil];
    //2.初始化字典对象,最外层的是个字典对象
    self.addressdic = [NSMutableDictionary dictionaryWithContentsOfFile:filePath];
    
    //当对结合进行快速遍历forin时,不能对集合进行修改
    //给字拷贝一个副本,对副本遍历,修改原版
    NSMutableDictionary *tempDic = [NSMutableDictionary dictionaryWithDictionary:self.addressdic];
    //将字典中的key对应得数组,由不可变数组变成可变可变数组
    for (NSString *key in tempDic) {
        //根据key值取到不可变数组
        NSArray *groupArray = self.addressdic[key];
        //就不可变数组,改为可变数组
        NSMutableArray *newMArray = [NSMutableArray arrayWithArray:groupArray];
        //对字典添加
        [self.addressdic setObject:newMArray forKey:key];
    }
    
    
    //获取所有的key值
    NSArray *arraykeys = [self.addressdic allKeys];
    
   NSArray *sortedKeys = [arraykeys sortedArrayUsingSelector:@selector(compare:)];
    self.keysArray = [NSMutableArray arrayWithArray:sortedKeys];

}


//配置导航条
- (void)configureNavigationBarContent{
    //修改导航条颜色
    self.navigationController.navigationBar.barTintColor = [UIColor orangeColor];
    //单独定制当去前界面的导航条的颜色,title
    self.navigationItem.title = @"河南32班通讯录";
    //修改字体
    NSDictionary *dic = @{NSForegroundColorAttributeName:[UIColor whiteColor],NSFontAttributeName:[UIFont systemFontOfSize:20]};
    self.navigationController.navigationBar.titleTextAttributes = dic;
    
    //在导航条右边添加Edit编辑按钮
    self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
//点击Edit按钮触发的方法
- (void)setEditing:(BOOL)editing animated:(BOOL)animated{
    [super setEditing:editing animated:animated];
    //让tableView进入编辑状体
    [(UITableView *)self.view setEditing:editing animated:YES];
}
- (void)dealloc
{
    self.apps = nil;
    self.addressdic = nil;
    self.keysArray = nil;
    [super dealloc];
}
@end

UIImage+UIImageScale.h



#import <UIKit/UIKit.h>

@interface UIImage (UIImageScale)
- (UIImage *)scaleImageToSize:(CGSize) size;
@end


UIImage+UIImageScale.m

#import "UIImage+UIImageScale.h"

@implementation UIImage (UIImageScale)
- (UIImage *)scaleImageToSize:(CGSize) size

{
    //创建一个bitmap的context
    //并把它设置为当前正在使用的cntext
    UIGraphicsBeginImageContext(size);
    //绘制改的大小的图片
    [self drawInRect:CGRectMake(0, 0, size.width, size.height)];
    //从当前context中创建一个改变大小的图片
    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
    //使用当前的context出堆栈
    UIGraphicsEndImageContext();
    //返回新的图片
    return newImage;
    
}
@end

Person.h  (模型)

#import <Foundation/Foundation.h>
@interface Person : NSObject
@property (nonatomic, copy) NSString *imageName;
@property (nonatomic, copy) NSString *name;
@property (nonatomic, copy) NSString *gender;
@property (nonatomic, copy) NSString *age;
@property (nonatomic, copy) NSString *phoneNumber;
@property (nonatomic, copy) NSString *motto;
- (instancetype)initWithDic:(NSDictionary *)dic;
+ (instancetype)personWithDic:(NSDictionary *)dic;
@end

Person.m

#import "Person.h"

@implementation Person
- (instancetype)initWithDic:(NSDictionary *)dic{
    if (self = [super init]) {
        [self setValuesForKeysWithDictionary:dic];
    }
    return self;
}
+ (instancetype)personWithDic:(NSDictionary *)dic{
    return [[self alloc] initWithDic:dic];
}
@end