html表格内文本框自适应,TableCell自适应输入框

最新推荐文章于 2023-02-28 16:30:15 发布

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最新推荐文章于 2023-02-28 16:30:15 发布

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文章标签： html表格内文本框自适应

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知识点：

一.AutoLayout有两个重要的属性：

1.Content Compression Resistance 百度翻译(内容压缩抗力)

2.Content Hugging 百度翻译(内容拥抱)

Content Compression Resistance = 变大！(保持自己更大)

这个属性的优先级(Priority)越高，越不“容易”被压缩。也就是说，当整体的空间装不下所有的View的时候，Content Compression Resistance优先级越高的，现实的内容越完整。

[self.labelTwosetContentCompressionResistancePriority:UILayoutPriorityDefaultHighforAxis:UILayoutConstraintAxisHorizontal];

Content Hugging = 抱紧！(保持自己更小)

这个属性的优先级越高，整个View就要越“抱紧”View里面的内容。也就是View的大小不会随着父级View的扩大而扩大。

[self.labelOnesetContentHuggingPriority:UILayoutPriorityDefaultHighforAxis:UILayoutConstraintAxisHorizontal];

typedef NS_OPTIONS(NSUInteger, UIViewAutoresizing) {

UIViewAutoresizingNone = 0,

UIViewAutoresizingFlexibleLeftMargin = 1 << 0,

UIViewAutoresizingFlexibleWidth = 1 << 1,

UIViewAutoresizingFlexibleRightMargin = 1 << 2,

UIViewAutoresizingFlexibleTopMargin = 1 << 3,

UIViewAutoresizingFlexibleHeight = 1 << 4,

UIViewAutoresizingFlexibleBottomMargin = 1 << 5

};

UIViewAutoresizingNone 不会随父视图的改变而改变

UIViewAutoresizingFlexibleLeftMargin 自动调整view与父视图左边距，以保证右边距不变

UIViewAutoresizingFlexibleWidth 自动调整view的宽度，保证左边距和右边距不变

UIViewAutoresizingFlexibleRightMargin 自动调整view与父视图右边距，以保证左边距不变

UIViewAutoresizingFlexibleTopMargin 自动调整view与父视图上边距，以保证下边距不变

UIViewAutoresizingFlexibleHeight 自动调整view的高度，以保证上边距和下边距不变

UIViewAutoresizingFlexibleBottomMargin 自动调整view与父视图的下边距，以保证上边距不变

纯代码实现cell布局，利用约束实现自适应布局。

下面展示的为实现自适应输入框的部分关键代码

[图片上传中...(image-89a2f0-1569465337493-0)]

初始化cell

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {

self=[super initWithStyle:style reuseIdentifier:reuseIdentifier];

if (self) {

[self updateViewConstraint];

}

return self;

}

设置布局的约束条件

- (void)setupViewConstraint {

[self.labelBeizhu mas_makeConstraints:^(MASConstraintMaker *make) {

make.leading.mas_equalTo(self.labelPriceTip.mas_leading);

make.top.mas_equalTo(self);

make.height.mas_equalTo(@(44));

make.width.mas_equalTo(@(50));

}];

[self.textViewBeiZhu mas_makeConstraints:^(MASConstraintMaker *make) {

make.leading.mas_equalTo(self.labelBeizhu.mas_trailing).offset(10);

make.top.mas_equalTo(self).offset(6);

make.height.mas_equalTo(@(32));

make.trailing.mas_equalTo(self).offset(-10);

make.bottom.mas_equalTo(self).priorityLow();

}];

}

textView的属性设置

- (UITextView *)textViewBeiZhu {

if (_textViewBeiZhu == nil) {

UITextView *textView = [[UITextView alloc] init];

textView.font = [UIFont systemFontOfSize:15];

textView.backgroundColor = [UIColor whiteColor];

textView.showsVerticalScrollIndicator = NO;

textView.scrollEnabled=NO;

textView.autoresizingMask = UIViewAutoresizingFlexibleHeight;

_textViewBeiZhu = textView;

[self addSubview:_textViewBeiZhu];

}

return _textViewBeiZhu;

}

在textViewDidChange中实时计算textview的高度并更新

- (void)textViewDidChange:(UITextView *)textView {

//计算textview高度

CGRect frame = textView.frame;

CGSize constraintSize = CGSizeMake(frame.size.width, MAXFLOAT);

CGSize size = [textView sizeThatFits:constraintSize];

[self.textViewBeiZhu mas_updateConstraints:^(MASConstraintMaker *make) {

//更新height

make.height.mas_equalTo(@(size.height));

}];

// 重点

[self.mtableView beginUpdates];

[self.mtableView endUpdates];

}

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