《小印记》iOS源码分享--自定义弹框篇

笔者前不久终于发布了自己的APP《小印记》，在此分享一些iOS源码，如果读者学到了有用的东西，希望能前往App Store下载《小印记》支持一下笔者，谢谢！

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---

首先看一下效果：

附上源码：（布局使用的是Masonry框架）

JKBaseAlertView.h

#import <UIKit/UIKit.h>

typedef NS_ENUM(NSInteger, AlertViewMode) {
    OkCancelMode = 0,       // 带确定和取消按钮
    OnlyOkMode              // 仅带确定按钮
};

typedef void(^ClickBlock)(NSMutableDictionary * dic);

@interface JKBaseAlertView : UIView

@property (nonatomic, strong) UIView * alertBgView;          // 背景视图
@property (nonatomic, strong) UIView * operateView;         // 操作视图
@property (nonatomic, strong) UILabel * titleLabel;            // 标题
@property (nonatomic, strong) UILabel * detailLabel;         // 副标题
@property (nonatomic, strong) UIButton * okButton;          // 确定按钮
@property (nonatomic, strong) UIButton * cancelButton;        // 取消按钮
@property (nonatomic, strong) UIButton * neverShowBtn;      // 不再显示按钮
@property (nonatomic, copy) ClickBlock okBlock;

/*
 * 单例
 */
+ (JKBaseAlertView *)sharedAlertView;

/*
 * 弹框方式一
 * mode 模式
 * param 入参
 * okBlock 确定按钮回调
 */
- (void)showAlertWithMode:(AlertViewMode)mode param:(NSMutableDictionary*)param action:(ClickBlock)okBlock;

/*
 * 弹框方式二
 * mode 模式
 * storeFlag 存储标记（当storeFlag != nil时，会显示“不再显示”按钮）
 * param 入参
 * okBlock 确定按钮回调
 */
- (void)showAlertWithMode:(AlertViewMode)mode storeFlag:(NSString *)storeFlag param:(NSMutableDictionary*)param action:(ClickBlock)okBlock;

/*
 * 确定按钮事件
 */
- (void)okButtonClicked:(UIButton *)sender;

/*
 * 取消按钮事件
 */
- (void)cancelButtonClicked:(UIButton *)sender;

/*
 * 移除弹框视图
 */
- (void)removeAlertView;

@end

JKBaseAlertView.m

#import "JKBaseAlertView.h"

#define animateTime  0.25f
#define titleFont 18
#define detailFont 16
#define plainHeight 95

@implementation JKBaseAlertView
{
    NSString *_storeFlagStr;
}

#pragma mark - 单例
+ (JKBaseAlertView *)sharedAlertView
{
    static JKBaseAlertView * _alertView = nil;
    static dispatch_once_t once;
    dispatch_once(&once, ^{
        _alertView = [[self alloc] init];
    });
    return _alertView;
}

#pragma mark - 创建UI
- (void)showAlertWithMode:(AlertViewMode)mode storeFlag:(NSString *)storeFlag param:(NSMutableDictionary*)param action:(ClickBlock)okBlock
{
    [self showAlertWithMode:mode param:param action:okBlock];
    
    if (storeFlag != nil) {
        // 不再显示按钮
        [self.operateView addSubview:self.neverShowBtn];
        [self.neverShowBtn mas_makeConstraints:^(MASConstraintMaker *make) {
            make.right.equalTo(self.operateView.mas_right).offset(-10);
            make.bottom.equalTo(self.operateView.mas_bottom).offset(-6);
            make.height.mas_equalTo(@30);
        }];
        
        _storeFlagStr = storeFlag;
    }
}

- (void)showAlertWithMode:(AlertViewMode)mode param:(NSMutableDictionary*)param action:(ClickBlock)okBlock
{
    WS(ws);
    int padding = 10;
    float titleHeight = [self heightForString:param[@"title"] fontSize:titleFont andWidth:kScreenWidth-40];
    float detailHeight = [self heightForString:param[@"detail"] fontSize:detailFont andWidth:kScreenWidth-40];
    // 背景视图
    [[[UIApplication sharedApplication] keyWindow] addSubview:self.alertBgView];
    [UIView animateWithDuration:animateTime animations:^{
        self.alertBgView.alpha = 1;
    }];
    // 操作区背景
    [self.alertBgView addSubview:self.operateView];
    [self.operateView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(ws.alertBgView.mas_left).offset(padding);
        make.right.equalTo(ws.alertBgView.mas_right).offset(-padding);
        make.centerY.equalTo(ws.alertBgView.mas_centerY);
        make.height.mas_equalTo(titleHeight + detailHeight + plainHeight);
    }];
    // 标题
    [self.operateView addSubview:self.titleLabel];
    [self.titleLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(ws.operateView.mas_top).offset(padding);
        make.centerX.equalTo(ws.operateView.mas_centerX);
        make.left.equalTo(ws.operateView.mas_left).offset(padding);
        make.right.equalTo(ws.operateView.mas_right).offset(-padding);
    }];
    if(param[@"title"]) {
        self.titleLabel.text = param[@"title"];
    }
    // 副标题
    if(param[@"detail"]) {
        [self.operateView addSubview:self.detailLabel];
        [self.detailLabel mas_makeConstraints:^(MASConstraintMaker *make) {
            make.top.equalTo(ws.titleLabel.mas_bottom).offset(padding*2);
            make.centerX.equalTo(ws.operateView.mas_centerX);
            make.left.equalTo(ws.operateView.mas_left).offset(padding);
            make.right.equalTo(ws.operateView.mas_right).offset(-padding);
        }];
        
        self.detailLabel.text = param[@"detail"];
    }
    
    [self.operateView addSubview:self.okButton];
    if (mode == OkCancelMode) {
        // 确定按钮
        [self.okButton mas_makeConstraints:^(MASConstraintMaker *make) {
            make.right.equalTo(ws.operateView.mas_right).offset(-padding);
            make.left.equalTo(ws.operateView.mas_centerX).offset(padding);
            make.bottom.equalTo(ws.operateView.mas_bottom).offset(-padding);
            make.height.mas_equalTo(@35);
        }];
        // 取消按钮
        [self.operateView addSubview:self.cancelButton];
        [self.cancelButton mas_makeConstraints:^(MASConstraintMaker *make) {
            make.left.equalTo(ws.operateView.mas_left).offset(padding);
            make.right.equalTo(ws.operateView.mas_centerX).offset(-padding);
            make.bottom.equalTo(ws.operateView.mas_bottom).offset(-padding);
            make.height.mas_equalTo(@35);
        }];
        if(param[@"cancelButtonName"]) {
            [self.cancelButton setTitle:param[@"cancelButtonName"] forState:UIControlStateNormal];
        }
        else {
            [self.cancelButton setTitle:@"取消" forState:UIControlStateNormal];
        }
    }
    else if (mode == OnlyOkMode) {
        // 确定按钮
        [self.okButton mas_makeConstraints:^(MASConstraintMaker *make) {
            make.centerX.equalTo(ws.operateView.mas_centerX);
            make.bottom.equalTo(ws.operateView.mas_bottom).offset(-padding);
            make.width.mas_equalTo(@100);
            make.height.mas_equalTo(@35);
        }];
    }
    if(param[@"okButtonName"]) {
        [self.okButton setTitle:param[@"okButtonName"] forState:UIControlStateNormal];
    }
    else {
        [self.okButton setTitle:@"确定" forState:UIControlStateNormal];
    }
    
    self.okBlock = okBlock;
}

#pragma mark - 根据字符串的的长度来计算高度
- (float)heightForString:(NSString *)string fontSize:(float)fontSize andWidth:(float)width
{
    float height;
    if (string) {
        height = [string boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIFont fontWithName:kSelfFontName size:fontSize],NSFontAttributeName, nil] context:nil].size.height;
    }
    else {
        height = 0.0f;
    }
    return height;
}

#pragma mark - 移除弹框视图
- (void)removeAlertView
{
    //退出
    [UIView animateWithDuration:animateTime animations:^{
        _alertBgView.alpha = 0;
    } completion:^(BOOL finished) {
        
        [self.alertBgView removeFromSuperview];
        self.alertBgView = nil;
        self.operateView = nil;
    }];
}

- (void)okButtonClicked:(UIButton *)sender
{
    self.okBlock(nil);
    [self removeAlertView];
}

- (void)cancelButtonClicked:(UIButton *)sender
{
    [self removeAlertView];
}

- (void)neverShowBtn:(UIButton *)sender
{
    [[NSUserDefaults standardUserDefaults] setObject:@"0" forKey:_storeFlagStr];
    [[NSUserDefaults standardUserDefaults] synchronize];
    [self removeAlertView];
}

#pragma mark - lazy load
- (UIView *)alertBgView
{
    if (_alertBgView == nil) {
        _alertBgView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, kScreenWidth, kScreenHeight)];
        _alertBgView.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.6];
        _alertBgView.alpha = 0;
    }
    return _alertBgView;
}

- (UIView *)operateView
{
    if (_operateView == nil) {
        _operateView = [[UIView alloc] init];
        _operateView.backgroundColor = [UIColor whiteColor];
        _operateView.layer.cornerRadius = 6.0f;
        _operateView.clipsToBounds = YES;
    }
    return _operateView;
}

- (UILabel *)titleLabel
{
    if (_titleLabel == nil) {
        _titleLabel = [[UILabel alloc] init];
        _titleLabel.textAlignment = NSTextAlignmentCenter;
        _titleLabel.numberOfLines = 0;
        _titleLabel.font = [UIFont fontWithName:kSelfFontName size:titleFont];
        _titleLabel.textColor = [UIColor colorWithHexString:@"#555555"];
    }
    return _titleLabel;
}

- (UILabel *)detailLabel
{
    if (_detailLabel == nil) {
        _detailLabel = [[UILabel alloc] init];
        _detailLabel.textAlignment = NSTextAlignmentCenter;
        _detailLabel.numberOfLines = 0;
        _detailLabel.font = [UIFont fontWithName:kSelfFontName size:detailFont];
        _detailLabel.textColor = [UIColor colorWithHexString:@"#555555"];
    }
    return _detailLabel;
}

- (UIButton *)okButton
{
    if (_okButton == nil) {
        _okButton = [UIButton buttonWithType:UIButtonTypeCustom];
        _okButton.backgroundColor = [UIColor colorWithHexString:@"#dd3030"];
        _okButton.titleLabel.font = [UIFont fontWithName:kSelfFontName size:18];
        [_okButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
        _okButton.layer.masksToBounds = YES;
        _okButton.layer.cornerRadius = 5.0f;
        [_okButton addTarget:self action:@selector(okButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
    }
    return _okButton;
}

- (UIButton *)cancelButton
{
    if (_cancelButton == nil) {
        _cancelButton = [UIButton buttonWithType:UIButtonTypeCustom];
        _cancelButton.layer.masksToBounds = YES;
        _cancelButton.layer.cornerRadius = 5.0f;
        _cancelButton.layer.borderWidth = 1.0f;
        _cancelButton.layer.borderColor = [UIColor colorWithHexString:@"#dd3030"].CGColor;
        _cancelButton.titleLabel.font = [UIFont fontWithName:kSelfFontName size:18];
        [_cancelButton setTitleColor:[UIColor colorWithHexString:@"#dd3030"] forState:UIControlStateNormal];
        [_cancelButton addTarget:self action:@selector(cancelButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
    }
    return _cancelButton;
}

- (UIButton *)neverShowBtn
{
    if (_neverShowBtn == nil) {
        _neverShowBtn = [UIButton buttonWithType:UIButtonTypeCustom];
        _neverShowBtn.titleLabel.font = [UIFont fontWithName:kSelfFontName size:15];
        [_neverShowBtn setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
        [_neverShowBtn setTitle:@"不再显示" forState:UIControlStateNormal];
        _neverShowBtn.layer.masksToBounds = YES;
        _neverShowBtn.layer.cornerRadius = 5.0f;
        [_neverShowBtn addTarget:self action:@selector(neverShowBtn:) forControlEvents:UIControlEventTouchUpInside];
    }
    return _neverShowBtn;
}

@end

使用方法：

NSMutableDictionary *dict = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"提示",@"title",@"确认退出？",@"detail", nil];
[[JKBaseAlertView sharedAlertView] showAlertWithMode:OkCancelMode param:dict action:^(NSMutableDictionary *dic) {
    NSLog(@"点击确定后的回调处理");
 }];

---

最后附上《小印记》截图，希望读者多多支持

来源：oschina

链接：https://my.oschina.net/u/580523/blog/864649