使用Storyboard初始化UIViewController中的自定义UIView
-
21-12-2019 - |
题
我有一个自定义UIViewController,并希望初始化并分配我之前分配给IBOutlet的自定义UIView。我正在使用故事板。任何人都可以给我提示在哪里调用自定义UIView的指定初始化程序?
**MyCustomUIView.h**
@interface MyCustomUIView : UIView
@end
**MyCustomUIView.m**
@implementation MyCustomUIView
- (id)initWithNumberOfHeaderRows:(NSUInteger)headerRowCount numberOfHeaderColumns:(NSUInteger)headerColumnCount frame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
}
return self;
}
@end
**MyUIViewController.h**
@interface MyUIViewController : UIViewController
@property (weak, nonatomic) IBOutlet MyCustomUIView *myCustomUIView; // I wanna use this Outlet
@end
**MyUIViewController.m**
@implementation MyUIViewController
@end
.
这是使用的github源的抽象版本: https://github.com/mutualmobile/mmspreadsheetview/blob/master/mmspreadsheetview/mmspreadsheetview.m
解决方案
您可以调用Controller的ViewDidload中自定义视图的构造函数(初始化程序)。然后,将其添加为控制器视图的子视图。
这样的东西:
- (void)viewDidLoad {
...
MyCustomUIView *customView = [MyCustomUIView alloc] initWithNumberOfHeaderRows:0 numberOfHeaderColumns:0 frame:CGRectZero];
[self.view addSubview:customView];
...
}
.
更新
我认为您应该创建自定义视图类:
//MyCustomView.h
@interface MyCustomView : UIView
- (id)initWithNumberOfHeaderRows:(NSUInteger)numberOfHeaderRows numberOfHeaderColumns:(NSUInteger)numberOfHeaderColumns;
@property (readwrite, nonatomic) NSUInteger numberOfHeaderRows;
@property (readwrite, nonatomic) NSUInteger numberOfHeaderColumns;
@end
//MyCustomView.m
@implementation
- (void)setup {
// Do custom stuffs here...
}
- (id)initWithNumberOfHeaderRows:(NSUInteger)numberOfHeaderRows numberOfHeaderColumns:(NSUInteger)numberOfHeaderColumns {
self = [self initWithFrame:CGRectZero];
if (self) {
self.numberOfHeaderRows = numberOfHeaderRows;
self.numberOfHeaderColumns = numberOfHeaderColumns;
}
return self;
}
- (id)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
[self setup];
}
return self;
}
- (id)init {
self = [super init];
if (self) {
[self setup];
}
return self;
}
- (id)initWithCoder:(NSCoder *)aDecoder {
self = [super initWithCoder:aDecoder];
if (self) {
[self setup];
}
return self;
}
@end
.
然后在ViewDidload:中
- (void)viewDidLoad {
...
// Assuming you have an IBOutlet property of MyCustomView class with a name 'customView'
// That property must be hooked up from the xib/storyboard
self.customView.numberOfHeaderRows = 1;
self.customView.numberOfHeaderColumns = 1;
self.customView.frame = self.view.bounds;
...
}
.
更新2
您可以简单地添加一个公共方法,用于在自定义视图中设置标头行和列的数量。
//MyCustomView.h
@interface MyCustomView : UIView
...
- (void)setNumberOfHeaderRows:(NSUInteger)rows numberOfHeaderColumns:(NSUInteger)columns;
...
@end
//MyCustomView.m
@implementation MyCustomView
...
- (void)setNumberOfHeaderRows:(NSUInteger)rows numberOfHeaderColumns:(NSUInteger)columns {
//Do the custom stuffs that you want...
}
...
@end
.
然后在ViewDidload中介绍
- (void)viewDidLoad {
...
[self.customView setNumberOfHeaderRows:10 numberOfHeaderColumns:4];
...
}
.
更新3
基于您给出的参考文件,您可以在DataSource中添加方法:
//MMSpreadsheetView.h
@optional
...
- (NSUInteger)spreadsheetViewNumberOfHeaderRows:(MMSpreadsheetView *)spreadsheetView;
- (NSUInteger)spreadsheetViewNumberOfHeaderColumns:(MMSpreadsheetView *)spreadsheetView;
...
.
然后,在实现文件中:
//MMSpreadsheetView.m
...
- (void)setupWithNumberOfHeaderRows:(NSUInteger)rows numberOfHeaderColumns:(NSUInteger)columns {
_scrollIndicatorInsets = UIEdgeInsetsZero;
_showsVerticalScrollIndicator = YES;
_showsHorizontalScrollIndicator = YES;
_headerRowCount = headerRowCount;
_headerColumnCount = headerColumnCount;
if (headerColumnCount == 0 && headerRowCount == 0) {
_spreadsheetHeaderConfiguration = MMSpreadsheetHeaderConfigurationNone;
}
else if (headerColumnCount > 0 && headerRowCount == 0) {
_spreadsheetHeaderConfiguration = MMSpreadsheetHeaderConfigurationColumnOnly;
}
else if (headerColumnCount == 0 && headerRowCount > 0) {
_spreadsheetHeaderConfiguration = MMSpreadsheetHeaderConfigurationRowOnly;
}
else if (headerColumnCount > 0 && headerRowCount > 0) {
_spreadsheetHeaderConfiguration = MMSpreadsheetHeaderConfigurationBoth;
}
self.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
self.backgroundColor = [UIColor grayColor];
[self setupSubviews];
}
- (id)initWithNumberOfHeaderRows:(NSUInteger)headerRowCount numberOfHeaderColumns:(NSUInteger)headerColumnCount frame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
[self setupWithNumberOfHeaderRows:rows numberOfHeaderColumns:columns];
}
return self;
}
- (id)initWithCoder:(NSCoder *)aDecoder {
self = [super initWithCoder:aDecoder];
if (self) {
NSUInteger rows = 0;
NSUInteger columns = 0;
if (self.dataSource && [self.dataSource respondsToSelector:@selector(spreadsheetViewNumberOfHeaderRows:)]) {
rows = [self.dataSource spreadsheetViewNumberOfHeaderRows:self];
}
if (self.dataSource && [self.dataSource respondsToSelector:@selector(spreadsheetViewNumberOfHeaderColumns:)]) {
columns = [self.dataSource spreadsheetViewNumberOfHeaderColumns:self];
}
[self setupWithNumberOfHeaderRows:rows numberOfHeaderColumns:columns];
}
return self;
}
...
. 其他提示
另一个选项是采用您的视图的数据源模式。例如,在mycustomuiview.h:
中@class MyCustomUIView;
@protocol MyCustomUIViewDataSource
- (NSInteger)numberOfHeadersInMyCustomUIView:(MyCustomUIView *)view;
- (NSInteger)numberOfHeaderColumnsInMyCustomUIView:(MyCustomUIView *)view;
@end
@interface MyCustomUIView : UIView
@property (nonatomic, strong) id<MyCustomUIViewDataSource> dataSource;
@end
.
在mycustomuiview.m添加:
- (void)setDataSource:(id<MyCustomUIViewDataSource>)dataSource {
self.dataSource = dataSource;
self.headerRowCount = [self.dataSource numberOfHeadersInMyCustomUIView:self];
self.headerColumnsCount = [self.dataSource numberOfHeaderColumnsInMyCustomUIView:self];
// Rearrange view with the new values
}
.
然后在您的UIViewController中:
- (void)viewDidLoad {
[super viewDidLoad];
self.myCustomUIView.dataSource = self;
}
- (NSInteger)numberOfHeadersInMyCustomUIView:(MyCustomUIView *)view {
return 5;
}
- (NSInteger)numberOfHeaderColumnsInMyCustomUIView:(MyCustomUIView *)view {
return 2;
}
.
甚至可以在自定义视图中添加刷新方法。
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