maxWidth好像是没有生效。 那我们通过app也就是约束布局自带的属性去约束呢 app:layout_constraintWidth_max="200dp" <com.anguomob.guideline.ZeroView android:id="@+id/tv2" android:layout_width="wrap_content" android:layout_height="40dp" app:layout_constraintEnd_toEndOf="@id/right" app:layout_...
如上图,选中某个组件就可以查看该组件的约束关系,比如这个ImageView,波浪线就是表示图片的left、top、bottom关联到根布局且边距为8dp,bottom关联到TextView上方并且间距50dp(这里TextView的约束关系是根布局居中),layout_width和layout_height都是0,表示大小充满约束空间MATCH_CONSTRAINT(类似一般布局的MATCH_PARENT)。因...
如果子View的宽或者高设置为了MATCH_CONSTRAINT(或者『0dip』)时,默认的行为是它会占满剩余的可用空间。 Max与Min 还可以加上最大最小的限制: layout_constraintWidth_min and layout_constraintHeight_min : will set the minimum size for this dimension layout_constraintWidth_max and layout_constraintHeight_ma...
让我们来测试一下: 1MyLabel *label = [MyLabelnew];2label.backgroundColor =[UIColor yellowColor];3[self.view addSubview:label];4[label mas_makeConstraints:^(MASConstraintMaker *make) { // 这里并没设高度约束5make.left.mas_equalTo(10);6make.top.mas_equalTo(100);7make.width.mas_lessT...
maxEms使用必须配合 wrap_content、maxLines = "1"、ellipsize 三个属性 ConstraintLayout中View填充剩余布局：android:layout_width="0dp"app:layout_constraintLeft_toRightOf="@+id/left"app:layout_constraintRight_toLeftOf="@+id/right"必须置顶左右或者上下边界 ...
Grid Layout Group Constraint: Fixed Column Count Content Size Fitter Horizontal Fit: Preferred Size or Unconstrained Content Size Fitter Vertical Fit: Preferred Size If unconstrained Horizontal Fit is used, it’s up to you to give the grid a width that is big enough to fit the specified column...
// Support for constraint-based layout (auto layout)// If nonzero, this is used when determining -intrinsicContentSize for multiline labels property(nonatomic) CGFloat preferredMaxLayoutWidth NS_AVAILABLE_IOS(6_0);文档中说的大概意思就是，当约束基于auto layout时，如果这个值不是0，这个...
一,NSLayoutConstraint API 1,constraintsWithVisualFormat: + (NSArray *)constraintsWithVisualFormat:(NSString *)format options:(NSLayoutFormatOptions)opts metrics:(NSDictionary *)metrics views:(NSDictionary *)views; 参数介绍: format:此参数为你的vfl语句,比如:@"H:|-[button]-|" ...
When you check thewidthorheightbox, Auto-Layout will set the current value as the constraint value. The taken value will be either bypixelsor bypercent, depending on the current toggle state. Min & Max You can set theminiumumormaximumvalue of thewidthor theheightof aLayer ...
亲测效果如下: 布局结构<?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"…