ui
#import "ViewController.h"
#import "Person.h"
@interface ViewController ()<UITextFieldDelegate, UIAlertViewDelegate>
{
UIImageView *_imgView;
NSMutableArray *_personsArray; //存放所有注册用户的信息
}
@end
@implementation ViewController
- (UIButton *)customButton:(NSString *)title frame:(CGRect)frame action:(SEL)action
{
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = frame;
[btn setTitle:title forState:UIControlStateNormal];
[btn addTarget:self action:action forControlEvents:UIControlEventTouchUpInside];
return btn;
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter]removeObserver:self name:UITextFieldTextDidChangeNotification object:nil];
//....
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
_personsArray = [[NSMutableArray alloc]init];
_imgView = [[UIImageView alloc]initWithFrame:CGRectMake(10, 20, 100, 100)];
_imgView.image = [UIImage imageNamed:@"image1"];
//设置图片的动画数组，数组中存放的是UIImage的对象
[_imgView setAnimationImages:@[[UIImage imageNamed:@"image1"], [UIImage imageNamed:@"image2"],[UIImage imageNamed:@"image3"], [UIImage imageNamed:@"image4"]]];
//设置播放一次所需的时间
_imgView.animationDuration = 1.2;
//指定动画重复的次数
_imgView.animationRepeatCount = 0;
//开始动画
[_imgView startAnimating];
[self.view addSubview:_imgView];
UIButton *stopBtn = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[stopBtn addTarget:self action:@selector(onClickedStop) forControlEvents:UIControlEventTouchUpInside];
stopBtn.frame = CGRectMake(120, 20, 40, 40);
[self.view addSubview:stopBtn];
//文本框
UITextField *tf1 = [[UITextField alloc]initWithFrame:CGRectMake(100, 150, 100, 24)];
tf1.tag = 10;
tf1.backgroundColor = [UIColor whiteColor];
tf1.borderStyle = UITextBorderStyleNone;
// tf1.text = @"iOS";
tf1.textColor = [UIColor blueColor]; //文字颜色
tf1.font = [UIFont systemFontOfSize:20]; //字体
tf1.textAlignment = NSTextAlignmentCenter;
tf1.placeholder = @"请输入"; //提示
tf1.adjustsFontSizeToFitWidth = YES;
tf1.minimumFontSize = 17;
// tf1.background = [UIImage imageNamed:@"image1"];
//disable状态下显示的图片
tf1.disabledBackground = [UIImage imageNamed:@"image4"];
//设置状态为disable
tf1.enabled = YES;
//开始编辑时清空
tf1.clearsOnBeginEditing = YES;
//当编辑的时候出现删除按钮
tf1.clearButtonMode = UITextFieldViewModeWhileEditing;
tf1.keyboardType = UIKeyboardTypeDefault;
tf1.returnKeyType = UIReturnKeyDefault;
//密文显示风格
tf1.secureTextEntry = NO;
tf1.delegate = self;
NSLog(@"tf1:%@", tf1);
//编辑改变事件
[tf1 addTarget:self action:@selector(onEditChanged:) forControlEvents:UIControlEventEditingChanged];
[self.view addSubview:tf1];
UIButton *btn1 = [self customButton:@"stopEdit" frame:CGRectMake(220, 150, 100, 24) action:@selector(onStopEdit)];
[self.view addSubview:btn1];
UITextField *tf2 = [self customTextField:@"请输入用户名" frame:CGRectMake(10, 200, 180, 24) isSecure:NO];
UIButton *leftBtn = [UIButton buttonWithType:UIButtonTypeContactAdd];
leftBtn.frame = CGRectMake(0, 0, 40, 40);
tf2.leftView = leftBtn;
tf2.leftViewMode = UITextFieldViewModeAlways;
tf2.tag = 11;
[self.view addSubview:tf2];
UITextField *tf3 = [self customTextField:@"请输入密码" frame:CGRectMake(10, 250, 180, 24) isSecure:YES];
tf3.tag = 12;
[self.view addSubview:tf3];
UIButton *registerBtn = [self customButton:@"注册" frame:CGRectMake(10, 280, 80, 24) action:@selector(onRegister:)];
[self.view addSubview:registerBtn];
UIButton *loginBtn = [self customButton:@"登录" frame:CGRectMake(100, 280, 80, 24) action:@selector(onLogin:)];
[self.view addSubview:loginBtn];
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(onTextChanged:) name:UITextFieldTextDidChangeNotification object:nil];
}
- (void)onEditChanged:(UITextField *)tf
{
NSLog(@"tf:%@", tf.text);
if (tf.text.length > 6) {
tf.text = [tf.text substringWithRange:NSMakeRange(0, 6)];
}
}
- (void)onTextChanged:(NSNotification *)notifier
{
NSLog(@"text changed");
}
- (void)onRegister:(UIButton *)btn
{
UITextField *loginTF = (UITextField *)[self.view viewWithTag:11];
UITextField *passwordTF = (UITextField *)[self.view viewWithTag:12];
Person *p = [[Person alloc]init];
p.username = loginTF.text;
p.password = passwordTF.text;
BOOL flag = NO;
for (Person *per in _personsArray) {
if ([per.username isEqualToString:p.username]) {
flag = YES;
//弹出警示框
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"用户已经存在" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", @"不确定", nil];
alert.tag = 10;
[alert show];
break; //一旦发现已经注册，则不用继续判断
// UIAlertController
}
}
if (flag == NO) {
[_personsArray addObject:p];
}
}
#pragma mark - alert delegate
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSLog(@"index:%ld", buttonIndex);
UITextField *loginTF = (UITextField *)[self.view viewWithTag:11];
if (alertView.tag == 11) {
[loginTF becomeFirstResponder]; //弹出键盘
}
}
- (void)onLogin:(UIButton *)btn
{
UITextField *loginTF = (UITextField *)[self.view viewWithTag:11];
UITextField *passwordTF = (UITextField *)[self.view viewWithTag:12];
[loginTF resignFirstResponder];
[passwordTF resignFirstResponder];
NSString *message;
for (Person *p in _personsArray) {
if ([p.username isEqualToString:loginTF.text]) {
if ([p.password isEqualToString:passwordTF.text]) {
message = @"登录成功";
}else
{
message = @"密码错误";
}
}else{
message = @"用户不存在";
}
}
UIAlertView *loginAlert = [[UIAlertView alloc]initWithTitle:@"提示" message:message delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
loginAlert.tag = 11;
[loginAlert show];
}
- (UITextField *)customTextField:(NSString *)placeholder frame:(CGRect)frame isSecure:(BOOL)secure
{
UITextField *tf = [[UITextField alloc]initWithFrame:frame];
tf.placeholder = placeholder;
tf.borderStyle = UITextBorderStyleRoundedRect;
tf.secureTextEntry = secure;
return tf;
}
#pragma mark - textField delegate
//是否允许编辑, 返回NO则不允许
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
NSLog(@"%s", __func__);
return YES;
}
//已经开始编辑
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
NSLog(@"%s", __func__);
[_imgView stopAnimating];
}
//已经结束编辑
- (void)textFieldDidEndEditing:(UITextField *)textField
{
NSLog(@"didEnd:%@", textField);
NSLog(@"%s", __func__);
}
//是否可以结束编辑，为NO则不可以
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
return YES;
}
//让键盘的return健可以点击
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder]; //退出键盘
return YES;
}
- (void)onStopEdit
{
UITextField *tf = [self.view viewWithTag:10];
[tf resignFirstResponder]; //将键盘退出
}
- (void)onClickedStop
{
//停止动画
[_imgView stopAnimating];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
