使用scrollView的一個子視圖對contentSize進行調整
_scroll_Bg = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 100, SCREEN_W, 200)]; _scroll_Bg.pagingEnabled = YES; _scroll_Bg.delegate = self; _scroll_Bg.backgroundColor = [UIColor redColor]; [self.view addSubview:_scroll_Bg];
1，現在scrollView添加一個主要子視圖，大小貼合scrollView
UIView *bgView = [[UIView alloc] init]; bgView.backgroundColor = [UIColor blueColor]; [_scroll_Bg addSubview:bgView]; [bgView mas_makeConstraints:^(MASConstraintMaker *make) { make.top.left.bottom.and.right.equalTo(_scroll_Bg).with.insets(UIEdgeInsetsZero); make.width.equalTo(_scroll_Bg); }];2，此后所有子視圖都需添加在此bgView上
UIView *childV = [[UIView alloc] init]; childV.backgroundColor = [UIColor cyanColor]; [bgView addSubview:childV]; [childV mas_makeConstraints:^(MASConstraintMaker *make) { make.left.right.mas_equalTo(0); make.top.mas_equalTo(250); make.height.mas_equalTo(1000); }];3，以最后所加子視圖為準，再對bgView進行重新約束
[bgView mas_makeConstraints:^(MASConstraintMaker *make) { make.bottom.equalTo(childV.mas_bottom); }];以上就是本次給大家整理的全部內容，如果還有任何不明白的地方可以在下方的留言區討論，感謝你對武林網的支持。
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