UIButtonで、画像とタイトルの位置を入れ替える時にハマった話 (UIEdgeInsets) ref: http://qiita.com/paming/items/a3b61dff825070f8ef40

file0.txt

-(void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    // ボタンの画像とtitleを入れ替え
    // ButtonAは入れ替えない。
    NSLog(@"self.buttonA.titleLabel=%@",self.buttonA.titleLabel);
    NSLog(@"self.buttonA.imageView=%@",self.buttonA.imageView);

    // ButtonBは、「移動させる方向に-1*サイズ分」設定してみる
    CGFloat titleWidthB = self.buttonB.titleLabel.bounds.size.width;
    CGFloat imageWidthB = self.buttonB.imageView.bounds.size.width;
    self.buttonB.titleEdgeInsets=UIEdgeInsetsMake(0,
                                                  -imageWidthB,
                                                  0,
                                                  0);
    self.buttonB.imageEdgeInsets=UIEdgeInsetsMake(0,
                                                  0,
                                                  0,
                                                  -titleWidthB);
    NSLog(@"self.buttonB.titleLabel=%@",self.buttonB.titleLabel);
    NSLog(@"self.buttonB.imageView=%@",self.buttonB.imageView);

    // ButtonCは「移動させる方向に-1*サイズ分、反対方向にサイズ分」設定してみる
    CGFloat titleWidthC = self.buttonC.titleLabel.bounds.size.width;
    CGFloat imageWidthC = self.buttonC.imageView.bounds.size.width;
    self.buttonC.titleEdgeInsets=UIEdgeInsetsMake(0,
                                                  -imageWidthC,
                                                  0,
                                                  imageWidthC);
    self.buttonC.imageEdgeInsets=UIEdgeInsetsMake(0,
                                                  titleWidthC,
                                                  0,
                                                  -titleWidthC);
    NSLog(@"self.buttonC.titleLabel=%@",self.buttonC.titleLabel);
    NSLog(@"self.buttonC.imageView=%@",self.buttonC.imageView);
}

file1.txt

- (void)viewDidLoad {
    [super viewDidLoad];

    self.viewA = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 100, 30)];
    self.viewB = [[UIView alloc]initWithFrame:CGRectMake(0, 30, 100, 30)];
    self.viewC = [[UIView alloc]initWithFrame:CGRectMake(0, 60, 100, 30)];
    self.viewA.backgroundColor = [UIColor yellowColor];
    self.viewB.backgroundColor = [UIColor redColor];
    self.viewC.backgroundColor = [UIColor greenColor];

    self.labelA = [[UILabel alloc]initWithFrame:CGRectMake(0, 100, 100, 30)];
    self.labelB = [[UILabel alloc]initWithFrame:CGRectMake(0, 130, 100, 30)];
    self.labelC = [[UILabel alloc]initWithFrame:CGRectMake(0, 160, 100, 30)];
    self.labelA.backgroundColor = [UIColor yellowColor];
    self.labelB.backgroundColor = [UIColor redColor];
    self.labelC.backgroundColor = [UIColor greenColor];
    self.labelA.text = @"labelA";
    self.labelB.text = @"labelB";
    self.labelC.text = @"labelC";
    self.labelA.textAlignment = NSTextAlignmentCenter;
    self.labelB.textAlignment = NSTextAlignmentCenter;
    self.labelC.textAlignment = NSTextAlignmentCenter;

    self.buttonA = [UIButton buttonWithType:UIButtonTypeCustom];
    self.buttonB = [UIButton buttonWithType:UIButtonTypeCustom];
    self.buttonC = [UIButton buttonWithType:UIButtonTypeCustom];
    self.buttonA.frame = CGRectMake(0, 200, 100, 30);
    self.buttonB.frame = CGRectMake(0, 230, 100, 30);
    self.buttonC.frame = CGRectMake(0, 260, 100, 30);
    self.buttonA.titleLabel.backgroundColor = [UIColor yellowColor];
    self.buttonB.titleLabel.backgroundColor = [UIColor redColor];
    self.buttonC.titleLabel.backgroundColor = [UIColor greenColor];
    [self.buttonA setTitle:@"buttonA" forState:UIControlStateNormal];
    [self.buttonB setTitle:@"buttonB" forState:UIControlStateNormal];
    [self.buttonC setTitle:@"buttonC" forState:UIControlStateNormal];
    [self.buttonA setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [self.buttonB setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [self.buttonC setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

    [self.view addSubview:self.viewA];
    [self.view addSubview:self.viewB];
    [self.view addSubview:self.viewC];
    [self.view addSubview:self.labelA];
    [self.view addSubview:self.labelB];
    [self.view addSubview:self.labelC];
    [self.view addSubview:self.buttonA];
    [self.view addSubview:self.buttonB];
    [self.view addSubview:self.buttonC];
}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];

    // View
    // ViewAはそのまま
    // ViewBは「右に-100」
    self.viewB.frame = UIEdgeInsetsInsetRect(self.viewB.frame,
                                             UIEdgeInsetsMake(0, 0, 0, -100));

    // ViewCは「右に-100」「左に100」
    self.viewC.frame = UIEdgeInsetsInsetRect(self.viewC.frame,
                                             UIEdgeInsetsMake(0, 100, 0, -100));

    // label
    // labelAはそのまま
    // labelBは「右に-100」
    self.labelB.frame = UIEdgeInsetsInsetRect(self.labelB.frame,
                                              UIEdgeInsetsMake(0, 0, 0, -100));
    // labelCは「右に-100」「左に100」
    self.labelC.frame = UIEdgeInsetsInsetRect(self.labelC.frame,
                                              UIEdgeInsetsMake(0, 100, 0, -100));

    // Button
    // buttonB.titleは「右に-100」
    self.buttonB.titleEdgeInsets = UIEdgeInsetsMake(0, 0, 0, -100);

    // buttonC.titleは「右に-100」
    self.buttonC.titleEdgeInsets = UIEdgeInsetsMake(0, 100, 0, -100);
}