iOS密码框实现（二）取消确定按钮

由于将确定按钮去掉了，所以需要重新修改下代码，当输入第四个数字时，自动进入房间。

iOS 密码框效果图：

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实现方式：

首先声明一个block初始化方法，因为这只是个框框，并不需要处理网络请求等等，需要提供一个block给调用方，调用方利用block 去拿到密码，利用密码做一些开房间等操作。

利用计时器通过0.2秒来看清输入第四位密码，用户输入4位密码后自动进入下一步操作。

1.头文件需要定义：

@classIDSGameRoomSecretView;

typedefvoid(^selfhandleInputPasswordBlock)(NSString *password ,IDSGameRoomSecretView *secretView);

@interface IDSGameRoomSecretView : UIView

- (instancetype)initWithselfPasswordCallBack:(selfhandleInputPasswordBlock)passwordCallback;

/**
* 弹出密码框视图
*/
- (void)showInputSecretView;

/**
* 移除密码框view 通过外部通过block来移除
*/
- (void)removeView;

/**
* 重置密码操作
*/
-(void)resetTextField;

@end

2.初始化操作：

- (instancetype)initWithselfPasswordCallBack:(selfhandleInputPasswordBlock)passwordCallback
{
    if (self = [superinit]) {
        self.onselfHandlePasswordCallBack = passwordCallback;
    }

    returnself;
}

3.建立密码框View

Ps：通过4个UITextField 来声明4个密码框，

- (void)showInputSecretView
{

    self.backgroundColor = [UIColorcolorWithRed:0green:0blue:0alpha:0.7];
    [[AppDelegatemainWindow] addSubview:self];
    [self.inputViewbecomeFirstResponder];

    self.frame = CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);

    UITapGestureRecognizer *selfRecognizer = [[UITapGestureRecognizeralloc] initWithTarget:selfaction:@selector(removeView)];
    self.userInteractionEnabled = YES;
    [selfaddGestureRecognizer:selfRecognizer];
    selfRecognizer.delegate = self;

    self.secretRoomView = [[UIViewalloc] initWithFrame:CGRectMake(0, 0, 510/2, 290/2)];
    self.secretRoomView.backgroundColor = [UIColorwhiteColor];
    self.secretRoomView.centerX = SCREEN_WIDTH/2;
    self.secretRoomView.centerY = SCREEN_HEIGHT/2-50;

    _titleLabel = [[UILabelalloc] initWithFrame:CGRectMake(0, 50/2, 0, 0)];
    _titleLabel.text = @"房间已加锁";
    _titleLabel.textColor = NF_Color_C3;
    _titleLabel.font = [UIFontsystemFontOfSize:Near_Final_Font_T6];
    [_titleLabelsizeToFit];
    _titleLabel.centerX = self.secretRoomView.frame.size.width/2;
    [self.secretRoomViewaddSubview:_titleLabel];

    _subtitleLabel = [[UILabelalloc] initWithFrame:CGRectMake(0,CGRectGetMaxY(self.titleLabel.frame)+10, 0, 0)];
    _subtitleLabel.text = @"输入房间密码";
    _subtitleLabel.textColor = NF_Color_C10;
    _subtitleLabel.font = [UIFontsystemFontOfSize:Near_Final_Font_T9];
    [_subtitleLabelsizeToFit];
    _subtitleLabel.centerX = self.secretRoomView.frame.size.width/2;
    [self.secretRoomViewaddSubview:_subtitleLabel];

    self.textFieldArray = [NSMutableArrayarray];
    NSArray *views = [selfsubviews];
    for (UITextField *tf in views) {
        [tf removeFromSuperview];
    }

    for (int i=0;i<4;++i) {
        PZXVerificationTextField *tf = [[PZXVerificationTextFieldalloc] initWithFrame:CGRectMake(70/2+i*70/2+15*i, CGRectGetMaxY(self.subtitleLabel.frame)+15, 70/2, 70/2)];
        [tf setFont:[UIFontsystemFontOfSize:Near_Final_Font_T5]];
        [tf setTextColor:NF_Color_C4];
        tf.backgroundColor = [UIColorclearColor];
        tf.layer.borderWidth = 0.5;
        tf.layer.borderColor = NF_Color_C9.CGColor;
        tf.layer.cornerRadius = 5.f;
        tf.layer.masksToBounds = YES;
        tf.tintColor =[UIColorclearColor];

       //苹果文档上提到过一次，tag值较小的，如0-100为苹果保留使用，而0就是保留着给自己这个view使用的
        tf.tag = 100+i;
        tf.keyboardType = UIKeyboardTypeNumberPad;
        tf.textAlignment = NSTextAlignmentCenter;
        tf.delegate = self;
        tf.pzx_delegate = self;
        [self.secretRoomViewaddSubview:tf];
        [self.textFieldArraycl_addObject:tf];
        [tf becomeFirstResponder];
    }

    [selfaddSubview:self.secretRoomView];

    self.secretRoomView.layer.cornerRadius = 10.f;
    self.secretRoomView.layer.masksToBounds = YES;
}

4. 移除View

//移除密码框View
- (void)removeView
{
[selfremoveFromSuperview];
}

5. TextField输入字符代理方法

//通过TextField代理来控制不同textfield字符的添加以及删除，以及判断第4个Textfield自动调用成功block方法
-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{

    textField.text = string;

    if (textField.text.length > 0) {

        if (textField.tag< [[_textFieldArraylastObject] tag]) {

            UITextField *newTF = (UITextField *)[selfviewWithTag:textField.tag+1];

            [newTF becomeFirstResponder];
        }
    }

    for (UITextField *tf inself.textFieldArray) {
        if([tf.textisEqualToString:@""]) {
            returnNO;
        }
    }

    if (![_queryNoticeTimerisValid]) {
        [selfstartQueryTimer];
    }
    returnNO;
}

6. TextField输入删除键删除字符代理

//点击退格键的代理
#pragma mark - PZXTextFieldDelegate
-(void)PZXTextFieldDeleteBackward:(PZXVerificationTextField *)textField{

    if (textField.tag > [[_textFieldArrayfirstObject] tag]) {

        UITextField *newTF = (UITextField *)[selfviewWithTag:textField.tag-1];
        newTF.text = @"";
        [newTF becomeFirstResponder];
    }
}

7. 重置密码

-(void)resetTextField{

    for (UITextField *tf inself.textFieldArray) {
        tf.text = @"";
        [tf resignFirstResponder];
    }
    [[_textFieldArrayfirstObject] becomeFirstResponder];
}

8.获取密码,进入block操作

-(void)getVertificationCode{ //获取密码方法

    NSString *str = [NSStringstring];

    for (int i = 0; i<_textFieldArray.count; i++) {
        str = [str stringByAppendingString:[NSStringstringWithFormat:@"%@",(UITextField *)[_textFieldArray[i] text]]];
    }
    if (self.onHandlePasswordCallBack) {
        self.onHandlePasswordCallBack(str);
    }
    if (self.onselfHandlePasswordCallBack) {
        self.onselfHandlePasswordCallBack(str,self);
    }
    [selfstopQueryTimer];
}

9.手势操作

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{

    for (UITextField *tf inself.textFieldArray) {

        [tf resignFirstResponder];
    }
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    if ([touch.viewisDescendantOfView:self.secretRoomView]) {
        returnNO;
    }
    returnYES;
}

10.计时器操作

Ps: 计时器的作用是防止密码输入到第四个字母时，用户来不及看清第四个字母，就直接进入房间操作，所以利用计时器，0.2秒才会进入下一步操作，让用户在0.2秒内看到输入第4位密码。

- (void)startQueryTimer
{
    [selfstopQueryTimer];

    if (nil == _queryNoticeTimer) {
        _queryNoticeTimer = [NSTimerscheduledTimerWithTimeInterval:sIntervalTime
                                                             target:self
                                                           selector:@selector(getVertificationCode)
                                                           userInfo:nilrepeats:NO];
    }
}

- (void)stopQueryTimer
{
    if (self.queryNoticeTimer) {

        [self.queryNoticeTimerinvalidate];
        _queryNoticeTimer = nil;
    }
}