iOS开发从入门到精通--自动布局子视图
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2023-01-13 14:50:53
#import
@interface viewcontroller : uiviewcontroller{
//创建父视图对象
uiview * _superv...
#import @interface viewcontroller : uiviewcontroller{ //创建父视图对象 uiview * _superview; //左上角label uilabel * _label01; //右上角label uilabel * _label02; //右下角label uilabel * _label03; //左下角label uilabel * _label04; //中间 uiview * _viewcenter; } @end
#import "viewcontroller.h" @interface viewcontroller () @end @implementation viewcontroller - (void)viewdidload { [super viewdidload]; // do any additional setup after loading the view, typically from a nib. _superview =[[uiview alloc]init]; _superview.frame = cgrectmake(20, 20, 180, 280); _superview.backgroundcolor=[uicolor bluecolor]; //左上角 _label01 =[[uilabel alloc]init]; //位置相对于父亲视图 _label01.frame=cgrectmake(0, 0, 40, 40); _label01.text=@"1"; _label01.backgroundcolor=[uicolor orangecolor]; //右上角 _label02=[[uilabel alloc]init]; _label02.frame=cgrectmake(180-40, 0, 40, 40); _label02.text=@"2"; _label02.backgroundcolor=[uicolor orangecolor]; //右下角 _label03=[[uilabel alloc]init]; _label03.frame=cgrectmake(180-40, 280-40, 40, 40); _label03.text=@"3"; _label03.backgroundcolor=[uicolor orangecolor]; //左下角 _label04=[[uilabel alloc]init]; _label04.frame=cgrectmake(0, 280-40, 40, 40); _label04.text=@"4"; _label04.backgroundcolor=[uicolor orangecolor]; [_superview addsubview:_label01]; [_superview addsubview:_label02]; [_superview addsubview:_label03]; [_superview addsubview:_label04]; //中间 _viewcenter =[[uiview alloc]init]; _viewcenter.frame=cgrectmake(0, 0, _superview.frame.size.width, 40); _viewcenter.center = cgpointmake(180/2, 280/2); _viewcenter.backgroundcolor =[uicolor graycolor]; [_superview addsubview:_viewcenter]; [self.view addsubview:_superview]; //自动布局属性设置,通过此变量来调整视图在父亲视图中的位置和大小 _viewcenter.autoresizingmask =uiviewautoresizingflexibletopmargin | uiviewautoresizingflexiblebottommargin|uiviewautoresizingflexiblewidth| uiviewautoresizingflexiblerightmargin |uiviewautoresizingflexibleleftmargin; //视图距离父视图的左侧可以变化 _label02.autoresizingmask = uiviewautoresizingflexibleleftmargin; _label03.autoresizingmask = uiviewautoresizingflexibletopmargin | uiviewautoresizingflexibleleftmargin ; _label04.autoresizingmask = uiviewautoresizingflexibletopmargin; } -(void) touchesbegan:(nsset *)touches withevent:(uievent *)event{ static bool islarge = no; [uiview beginanimations:nil context:nil]; [uiview setanimationduration:1]; if(islarge){ _superview.frame=cgrectmake(20, 20, 180, 280); islarge=no; }else{ _superview.frame=cgrectmake(10, 10, 300, 480); islarge=yes; } [uiview commitanimations]; } - (void)didreceivememorywarning { [super didreceivememorywarning]; // dispose of any resources that can be recreated. } @end
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