iOS addSubViewのときに隅とか真ん中に楽に置けるカテゴリ

ただまんま書いただけなのですが、作っておくととても便利でした。

UIView+adjustSubView.h

#import <UIKit/UIKit.h>

typedef enum {
    UIViewAdjustSubViewLeftTop,
    UIViewAdjustSubViewLeftCenter,
    UIViewAdjustSubViewLeftButtom,
    UIViewAdjustSubViewCenterTop,
    UIViewAdjustSubViewCenter,
    UIViewAdjustSubViewCenterButtom,
    UIViewAdjustSubViewRightTop,
    UIViewAdjustSubViewRightCenter,
    UIViewAdjustSubViewRightButtom,
} UIViewAdjustSubView;

@interface UIView (adjustSubView)

- (void)addSubview:(UIView *)view location:(UIViewAdjustSubView)location margin:(CGFloat)margin;
- (void)addSubview:(UIView *)view location:(UIViewAdjustSubView)location marginX:(CGFloat)marginX marginY:(CGFloat)marginY;

@end

UIView+adjustSubView.m

#import "UIView+adjustSubView.h"

@implementation UIView (adjustSubView)

- (void)addSubview:(UIView *)view location:(UIViewAdjustSubView)location margin:(CGFloat)margin
{
    [self addSubview:view location:location marginX:margin marginY:margin];
}

- (void)addSubview:(UIView *)view location:(UIViewAdjustSubView)location marginX:(CGFloat)marginX marginY:(CGFloat)marginY
{
    CGFloat x, y;
    
    switch (location) {
        case UIViewAdjustSubViewLeftTop:
            x = marginX;
            y = marginY;
            break;
        case UIViewAdjustSubViewLeftCenter:
            x = marginX;
            y = ( self.frame.size.height - view.frame.size.height) / 2;
            break;
        case UIViewAdjustSubViewLeftButtom:
            x = marginX;
            y = ( self.frame.size.height - view.frame.size.height - marginY );
            break;
        case UIViewAdjustSubViewCenterTop:
            x = ( self.frame.size.width - view.frame.size.width) / 2;
            y = marginY;
            break;
        case UIViewAdjustSubViewCenter:
            x = ( self.frame.size.width - view.frame.size.width) / 2;
            y = ( self.frame.size.height - view.frame.size.height) / 2;
            break;
        case UIViewAdjustSubViewCenterButtom:
            x = ( self.frame.size.width - view.frame.size.width) / 2;
            y = ( self.frame.size.height - view.frame.size.height - marginY );
            break;
        case UIViewAdjustSubViewRightTop:
            x = ( self.frame.size.width - view.frame.size.width - marginX );
            y = marginY;
            break;
        case UIViewAdjustSubViewRightCenter:
            x = ( self.frame.size.width - view.frame.size.width - marginX );
            y = ( self.frame.size.height - view.frame.size.height ) / 2;
            break;
        case UIViewAdjustSubViewRightButtom:
            x = ( self.frame.size.width - view.frame.size.width - marginX );
            y = ( self.frame.size.height - view.frame.size.height - marginY );
            break;
        default:
            break;
    }
    
    view.frame = CGRectMake(x, y, view.frame.size.width, view.frame.size.height);

    [self addSubview:view];
}

@end

使い方

(右に置くときは縦横の間隔40px指定、それ以外は縦60px横20px指定)

    // サイズが40pxの正方形のsubViewを作る
    UIView *view1 = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 40, 40)];
    view1.backgroundColor = [UIColor blueColor];
    UIView *view2 = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 40, 40)];
    view2.backgroundColor = [UIColor blueColor];
    // 省略...
    
    [self.view addSubview:view1 location:UIViewAdjustSubViewCenter marginX:20 marginY:60];
    [self.view addSubview:view2 location:UIViewAdjustSubViewCenterButtom marginX:20 marginY:60];
    [self.view addSubview:view3 location:UIViewAdjustSubViewCenterTop marginX:20 marginY:60];
    [self.view addSubview:view4 location:UIViewAdjustSubViewLeftButtom marginX:20 marginY:60];
    [self.view addSubview:view5 location:UIViewAdjustSubViewLeftCenter marginX:20 marginY:60];
    [self.view addSubview:view6 location:UIViewAdjustSubViewLeftTop marginX:20 marginY:60];
    
    [self.view addSubview:view7 location:UIViewAdjustSubViewRightButtom margin:40];
    [self.view addSubview:view8 location:UIViewAdjustSubViewRightCenter margin:40];
    [self.view addSubview:view9 location:UIViewAdjustSubViewRightTop margin:40];

単純ですが結構使ってます。
こういう自分パーツをいっぱい作っておけばどんどん効率化できそうですね。

あと、QuickDialogのカスタマイズとかできるようになればかなり捗りそうなんで、今の課題ですね。