IOS不用AutoLayout也能实现自动布局的类(2)----MyFrameLayout横空出世

我们知道，在IOS中我们要想进行视图的各方向的停靠，需要用到autoresizingMask，以及不停的计算应该停靠的位置，也就是计算frame中的x,y,width,height，这样大量的编码导致计算繁琐而且容易出错，因此我这里推出了另外新的布局模式MyFrameLayout。这个布局可以让子视图实现左中右，上中下，填充等功能的布局，同时还可以设置停靠的布局的位置的边距，这个可以通过扩展的视图的七个属性：

@property(nonatomic, assign) CGFloat myTop;

@property(nonatomic, assign) CGFloat myLeft;

@property(nonatomic, assign) CGFloat myBottom;

@property(nonatomic, assign) CGFloat myRight;

@property(nonatomic,assign)CGFloat myCenterX;

@property(nonatomic,assign)CGFloat myCenterY;

@property(nonatomic,assign)CGPoint myCenter;

因为这个布局的使用比较简单，下面直接可以看图：

对应的代码如下：

-(void)loadView
{
    [super loadView];
    
    //建立13个子视图。并进行布局
    
    MyFrameLayout *fl = [MyFrameLayout new];
    fl.myLeft = fl.myRight = 0;
    fl.myTop = fl.myBottom = 0;
    fl.padding = UIEdgeInsetsMake(20, 20, 20, 20);
    fl.backgroundColor = [UIColor grayColor];
    
    //显示全屏
    UILabel *fill = UILabel.new;
    fill.text = @"                fill";
    fill.backgroundColor = [UIColor blueColor];
    fill.myMargin = 0;
    [fl addSubview:fill];
    
    
    
    //左右填充。
    UILabel *horzFill = UILabel.new;
    horzFill.text = @"Horz Fill";
    [horzFill sizeToFit];
    horzFill.textAlignment = NSTextAlignmentCenter;
    horzFill.backgroundColor = [UIColor greenColor];
    horzFill.myLeft = horzFile.myRight = 0;
    horzFill.myTop = 40;
    [fl addSubview:horzFill];
    
    
    //左右居中
    UILabel *horzCenter = UILabel.new;
    horzCenter.text = @"Horz Center";
    [horzCenter sizeToFit];
    horzCenter.backgroundColor = [UIColor whiteColor];
    horzCenter.myCenterX = 0;
    [fl addSubview:horzCenter];
    
    
    //左上
    UILabel *topLeft = UILabel.new;
    topLeft.text = @"topLeft";
    [topLeft sizeToFit];
    topLeft.backgroundColor = [UIColor whiteColor];
    [fl addSubview:topLeft];
    
    //左中
    UILabel *centerLeft = UILabel.new;
    centerLeft.text = @"centerLeft";
    [centerLeft sizeToFit];
    centerLeft.backgroundColor = [UIColor whiteColor];
    centerLeft.myCenterY = 0 ;
    [fl addSubview:centerLeft];
    
    
    //左下
    UILabel *bottomLeft = UILabel.new;
    bottomLeft.text = @"bottomLeft";
    [bottomLeft sizeToFit];
    bottomLeft.backgroundColor = [UIColor whiteColor];
    bottomLeft.myBottom = 0;
    [fl addSubview:bottomLeft];
    
    
    //中上
    UILabel *topCenter = UILabel.new;
    topCenter.text = @"topCenter";
    [topCenter sizeToFit];
    topCenter.backgroundColor = [UIColor greenColor];
    topCenter.myCenterX = 0;
    [fl addSubview:topCenter];
    
    
    //中中。
    UILabel *centerCenter = UILabel.new;
    centerCenter.text = @"centerCenter";
    [centerCenter sizeToFit];
    centerCenter.backgroundColor = [UIColor greenColor];
    centerCenter.myCenter = CGPointZero;
    [fl addSubview:centerCenter];
    
    
    //中下
    UILabel *bottomCenter = UILabel.new;
    bottomCenter.text = @"bottomCenter";
    [bottomCenter sizeToFit];
    bottomCenter.backgroundColor = [UIColor greenColor];
    bottomCenter.myCenterX = 0; bottomCenter.myBottom = 0;
    [fl addSubview:bottomCenter];
    
    
    //右上
    UILabel *topRight = UILabel.new;
    topRight.text = @"topRight";
    [topRight sizeToFit];
    topRight.backgroundColor = [UIColor greenColor];
    topRight.myRight = 0;
    [fl addSubview:topRight];
    
    
    //右中
    UILabel *centerRight = UILabel.new;
    centerRight.text = @"centerRight";
    [centerRight sizeToFit];
    centerRight.backgroundColor = [UIColor greenColor];
    centerRight.myRight = 0; centerRight.myCenterY = 0;
    [fl addSubview:centerRight];
    
    
    UILabel *bottomRight = UILabel.new;
    bottomRight.text = @"bottomRight";
    [bottomRight sizeToFit];
    bottomRight.backgroundColor = [UIColor greenColor];
    bottomRight.myRight = 0; bottomRight.myBottom = 0;
    [fl addSubview:bottomRight];
    
    
    //居中显示。
    UILabel *center = UILabel.new;
    center.text = @"center";
    [center sizeToFit];
    center.backgroundColor = [UIColor orangeColor];
    center.myCenter = CGPointZero;
    [fl addSubview:center];
    
    
    [self.view addSubview:fl];
    
    
    
}

总结：

   对于那些希望固定在某个位置的子视图来说，我们可以通过将视图加入到MyFrameLayout中来实现。

https://github.com/youngsoft/MyLinearLayout