今天有些匆忙。 效果圖如下： 代碼如下：
今天有些匆忙。
效果圖如下：
代碼如下：
#import <UIKit/UIKit.h> #import "FirstViewController.h" @interface AppDelegate : UIResponder <UIApplicationDelegate> @property (strong, nonatomic) UIWindow *window; @end
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
FirstViewController *first=[[FirstViewController alloc]init];
UINavigationController *navc=[[UINavigationController alloc]initWithRootViewController:first];
self.window.rootViewController=navc;
return YES;
}
#import <UIKit/UIKit.h> #import "SecondViewController.h" @interface FirstViewController : UIViewController<UITableViewDataSource,UITableViewDelegate,postValueDelegate> @property(strong,nonatomic)UITableView * tableview; @property(strong,nonatomic)NSMutableArray *array; @property(strong,nonatomic)NSString *st; @end
#import "FirstViewController.h"
@interface FirstViewController ()
@property(assign,nonatomic)int a;
@end
@implementation FirstViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor=[UIColor yellowColor];
self.title=@"首頁";
UIBarButtonItem *nextItem=[[UIBarButtonItem alloc]initWithTitle:@"下一頁" style:UIBarButtonItemStylePlain target:self action:@selector(nextpage)];
self.navigationItem.rightBarButtonItem=nextItem;
self.array=[NSMutableArray array];
for (int i=1; i<20; i++) {
[self.array addObject:[NSString stringWithFormat:@"你摔了%d跤",i]];
}
self.tableview=[[UITableView alloc]initWithFrame:self.view.frame style:1];
self.tableview.separatorColor=[UIColor redColor];
self.tableview.delegate=self;
self.tableview.dataSource=self;
[self.view addSubview:self.tableview];
[self.tableview registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"];
}
-(void)postvalue:(NSString *)str
{
// self.st=str;
[self.array replaceObjectAtIndex:self.a withObject:str];
[self.tableview reloadData];
// NSLog(@"%@",self.st);
}
#pragma mark 數據源 每個分區顯示行數設置
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return self.array.count;
}
#pragma mark 數據源 每個單元格顯示的內容
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
//單元格重用機制
static NSString * cellIdentity=@"cell";
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:cellIdentity forIndexPath:indexPath];
cell.textLabel.text=self.array[indexPath.row];
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(@"%@",self.array[indexPath.row]);
self.st=self.array[indexPath.row];
SecondViewController *second=[[SecondViewController alloc]init];
second.str=self.st;
second.delegate=self;
self.a=(int)indexPath.row;
NSLog(@"%d",self.a);
[self.navigationController pushViewController:second animated:YES];
}
-(void)nextpage
{
SecondViewController *second=[[SecondViewController alloc]init];
second.str=self.st;
[self.navigationController pushViewController:second animated:YES];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
#import <UIKit/UIKit.h> //創建協議，聲明方法 @protocol postValueDelegate <NSObject> -(void)postvalue:(NSString* )str; @end @interface SecondViewController : UIViewController<UITextFieldDelegate> @property(strong,nonatomic) UITextField * textName; @property(strong,nonatomic) NSString *str; @property(strong,nonatomic) id<postValueDelegate> delegate; @end
#import "SecondViewController.h"
@interface SecondViewController ()
@end
@implementation SecondViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor=[UIColor greenColor];
self.navigationItem.hidesBackButton=YES;
self.title=@"尾頁";
self.navigationItem.leftBarButtonItem=[[UIBarButtonItem alloc]initWithTitle:@"back" style:2 target:self action:@selector(backpage)];
self.textName=[[UITextField alloc]initWithFrame:CGRectMake(100, 300, 150, 60)];
self.textName.borderStyle=1;
self.textName.text=self.str;
self.textName.delegate=self;
[self.view addSubview:self.textName];
}
-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
if ([textField isFirstResponder]) {
[textField resignFirstResponder];
}
if (self.delegate) {
[self.delegate postvalue:self.textName.text];
}
[self.navigationController popToRootViewControllerAnimated:YES];
return YES;
}
-(void)backpage
{
if (self.delegate) {
[self.delegate postvalue:self.textName.text];
NSLog(@"%@",self.textName.text);
}
[self.navigationController popToRootViewControllerAnimated:YES];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
