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  • BeeFramework 系列二 UISignal篇下

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     发表于 2013-7-16 14:26:31 | 只看该作者 回帖奖励
    上篇，我们讲了UISignal的工作原理，以及BeeUIButton中的一些用法，实际上，BeeFramework框架为大部分常用组件封装了UISignal，在应用中只需要对Signal进行处理就好了，这在一定程度上减轻了代码量。 

          在实际应用中UITableView的场景可谓是无处不在，下面的例子实现了一个UITableViewCell的自定义UISignal。先看下效果图 
           <ignore_js_op> 
          点击浏览或评论触发相应事件，为了响应这样的事件，通常的做法是在UITableViewCell中采用代理的方式，在ViewController中实现Cell的协议。 
          下面看下Bee的写法
    1. //
    2. //  ViewController.h
    3. //  BeeFrameWorkTest
    4. //
    5. //  Created by he songhang on 13-6-3.
    6. //  Copyright (c) 2013年 he songhang. All rights reserved.
    7. //
    9. #import <UIKit/UIKit.h>
    10. #import <BeeFramework/Bee.h>
    12. @interface MyCell : UITableViewCell{
    13.     UILabel *lb_content;
    14.     UIButton *btn_count;
    15.     UIButton *btn_comment;
    16. }
    18. @property(nonatomic,retain) NSDictionary *data;
    20. AS_SIGNAL(COUNT)
    22. AS_SIGNAL(COMMENT)
    24. @end
    26. @interface ViewController : UITableViewController
    28. @end
    复制代码
    点击浏览或评论触发相应事件，为了响应这样的事件，通常的做法是在UITableViewCell中采用代理的方式，在ViewController中实现Cell的协议。 
          下面看下Bee的写法
    1. //
    2. //  ViewController.h
    3. //  BeeFrameWorkTest
    4. //
    5. //  Created by he songhang on 13-6-3.
    6. //  Copyright (c) 2013年 he songhang. All rights reserved.
    7. //
    9. #import <UIKit/UIKit.h>
    10. #import <BeeFramework/Bee.h>
    12. @interface MyCell : UITableViewCell{
    13.     UILabel *lb_content;
    14.     UIButton *btn_count;
    15.     UIButton *btn_comment;
    16. }
    18. @property(nonatomic,retain) NSDictionary *data;
    20. AS_SIGNAL(COUNT)
    22. AS_SIGNAL(COMMENT)
    24. @end
    26. @interface ViewController : UITableViewController
    28. @end
    复制代码
    1. //
    2. //  ViewController.m
    3. //  BeeFrameWorkTest
    4. //
    5. //  Created by he songhang on 13-6-3.
    6. //  Copyright (c) 2013年 he songhang. All rights reserved.
    7. //
    9. #import "ViewController.h"
    11. @implementation MyCell
    13. DEF_SIGNAL(COUNT)
    15. DEF_SIGNAL(COMMENT)
    17. - (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
    18.     self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    19.     lb_content = [[UILabel alloc]init];
    20.     btn_count = [[UIButton alloc]init];
    21.     btn_comment = [[UIButton alloc]init];
    22.     
    23.     [btn_count addTarget:self action:@selector(countBtnClicked) forControlEvents:UIControlEventTouchUpInside];
    24.     [btn_comment addTarget:self action:@selector(commentBtnClicked) forControlEvents:UIControlEventTouchUpInside];
    25.     [btn_count setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];
    26.     btn_count.titleLabel.font = [UIFont systemFontOfSize:12];
    27.     [btn_comment setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];
    28.     btn_comment.titleLabel.font = [UIFont systemFontOfSize:12];
    29.     [self.contentView addSubview:lb_content];
    30.     [self.contentView addSubview:btn_comment];
    31.     [self.contentView addSubview:btn_count];
    32.     return self;
    33. }
    35. -(void)layoutSubviews{
    36.     lb_content.frame = CGRectMake(10, 0, 300, 44);
    37.     btn_count.frame = CGRectMake(200, 20, 50, 14);
    38.     btn_comment.frame = CGRectMake(260, 20, 50, 14);
    39. }
    41. -(void)setData:(NSDictionary *)data{
    42.     _data = data;
    43.     if (data) {
    44.         lb_content.text = [data stringAtPath:@"content"];
    45.         [btn_count setTitle:[NSString stringWithFormat:@"浏览(%@)",[data stringAtPath:@"count"]] forState:UIControlStateNormal];
    46.         [btn_comment setTitle:[NSString stringWithFormat:@"评论(%@)",[data stringAtPath:@"comment"]] forState:UIControlStateNormal];
    47.     }else{
    48.         lb_content.text = nil;
    49.         [btn_count setTitle:nil forState:UIControlStateNormal];
    50.         [btn_comment setTitle:nil forState:UIControlStateNormal];
    51.     }
    52. }
    54. -(void)countBtnClicked{
    55.     [self sendUISignal:MyCell.COUNT withObject:self.data];
    56. }
    58. -(void)commentBtnClicked{
    59.     [self sendUISignal:MyCell.COMMENT withObject:self.data];
    60. }
    62. @end
    64. @interface ViewController (){
    65.     NSArray *datas;
    66. }
    68. @end
    70. @implementation ViewController
    72. -(void)handleUISignal_MyCell:(BeeUISignal *)signal{
    73.     if ([signal is:MyCell.COUNT]) {
    74.         NSDictionary *dict = (NSDictionary *)signal.object;
    75.         CC(@"%@被点击",[dict stringAtPath:@"content"]);
    76.     }else if ([signal is:MyCell.COMMENT]){
    77.         NSDictionary *dict = (NSDictionary *)signal.object;
    78.         CC(@"%@被评论",[dict stringAtPath:@"content"]);
    79.     }
    80. }
    82. - (id)initWithStyle:(UITableViewStyle)style
    83. {
    84.     self = [super initWithStyle:style];
    85.     if (self) {
    86.         // Custom initialization
    87.     }
    88.     return self;
    89. }
    91. - (void)viewDidLoad
    92. {
    93.     [super viewDidLoad];
    94.     NSDictionary *dict1 = [NSDictionary dictionaryWithObjectsAndKeys:@"测试数据1",@"content",@"20",@"count",@"3",@"comment", nil];
    95.     NSDictionary *dict2 = [NSDictionary dictionaryWithObjectsAndKeys:@"测试数据2",@"content",@"30",@"count",@"4",@"comment", nil];
    96.     NSDictionary *dict3 = [NSDictionary dictionaryWithObjectsAndKeys:@"测试数据3",@"content",@"10",@"count",@"2",@"comment", nil];
    97.     datas = [[NSArray alloc]initWithObjects:dict1,dict2,dict3, nil];
    98.         // Do any additional setup after loading the view, typically from a nib.
    99. }
    101. - (void)didReceiveMemoryWarning
    102. {
    103.     [super didReceiveMemoryWarning];
    104.     // Dispose of any resources that can be recreated.
    105. }
    107. #pragma mark -UITableViewDataSource
    109. - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;{
    110.     return [datas count];
    111. }
    113. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;{
    114.     MyCell *cell = [tableView dequeueReusableCellWithIdentifier:@"MYCELL"];
    115.     if (!cell) {
    116.         cell = [[MyCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"MYCELL"];
    117.     }
    118.     cell.data = [datas objectAtIndex:indexPath.row];
    119.     return cell;
    120. }
    122. @end
    复制代码
    在MYCell.h中通过AS_SIGNAL定义了两个静态的属性，用来自定义UISinal的名字，MYCell.m中的DEF_SIGNAL与.h中相对应。事实上，在Bee中还有很多这样类型的预定义方法，如：AS_MESSAGE 、AS_NOTIFICATION ,通过这些预定义方法，在一定程度上范规了方法的命名，通过这些预定义的属性就能知道对应的接口的调用方式。 
        在Cell中通过调用 [self sendUISignal:XXX withObject:self.data]实现了信号的传递过程。在ViewController实现规范命名的方法(见上篇），就能对信号进行响应。 

         实际上Bee已经为我们提供了一个方便布局的BeeUIGirdCell，它预定义了常见的一些方法，如数据的绑定，界面的布局等等。Bee中的BeeUITableBoard、BeeUIFlowBoard都采用GirdCell来定义布局，这里我们通过category为UITableView扩展使用BeeUIGirdCell的方法。
    1. //
    2. //  UITableView+BeeUIGirdCell.h
    3. //
    4. //  Created by he songhang on 13-4-24.
    5. //  Copyright (c) 2013年 he songhang. All rights reserved.
    6. //
    8. #if (TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR)
    10. #import <Foundation/Foundation.h>
    11. #import "Bee_UIGridCell.h"
    13. @interface UITableViewCell (BeeUIGirdCell)
    14. @property(nonatomic,retain) BeeUIGridCell *gridCell;
    15. @end
    17. @interface UITableView (BeeUIGirdCell)
    18. -(UITableViewCell *) dequeueReusableCellWithBeeUIGirdCellClass:(Class) class;
    19. @end
    20. #endif
    复制代码
    1. //
    2. //  UITableView+BeeUIGirdCell.m
    3. //  618
    4. //
    5. //  Created by he songhang on 13-4-24.
    6. //  Copyright (c) 2013年 he songhang. All rights reserved.
    7. //
    9. #import "UITableView+BeeUIGirdCell.h"
    10. #import "CGRect+BeeExtension.h"
    11. #import "Bee_Precompile.h"
    12. #include <objc/runtime.h>
    13. #import "Bee_Runtime.h"
    16. @implementation UITableViewCell(BeeUIGirdCell)
    18. @dynamic gridCell;
    20. - (void)setFrame:(CGRect)rc
    21. {
    22.         [super setFrame:CGRectZeroNan(rc)];
    23.     
    24.         [self.gridCell setFrame:self.bounds];
    25.     //        [_gridCell layoutSubcells];
    26. }
    28. - (void)setCenter:(CGPoint)pt
    29. {
    30.         [super setCenter:pt];
    31.         
    32.         [self.gridCell setFrame:self.bounds];
    33.     //        [_gridCell layoutSubcells];
    34. }
    37. -(void)setGridCell:(BeeUIGridCell *)gridCell{
    38.     if (!self.gridCell) {
    39.         objc_setAssociatedObject( self, "UITableViewCell.gridCell", gridCell, OBJC_ASSOCIATION_RETAIN );
    40. //        self.gridCell.autoresizesSubviews = YES;
    41. //        self.gridCell.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
    42.         
    43.         if ( gridCell.superview != self.contentView )
    44.         {
    45.             [gridCell.superview removeFromSuperview];
    46.         }
    47.         [self.contentView addSubview:gridCell];
    48.         
    49.         
    50.     }else{
    51.         if ( self.gridCell != gridCell )
    52.         {
    53.             [self.gridCell release];
    54.             objc_setAssociatedObject( self, "UITableViewCell.gridCell", gridCell, OBJC_ASSOCIATION_RETAIN );
    55. //            self.gridCell.autoresizesSubviews = YES;
    56. //            self.gridCell.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
    57.             
    58.             if ( gridCell.superview != self.contentView )
    59.             {
    60.                 [gridCell.superview removeFromSuperview];
    61.             }
    62.             [self.contentView addSubview:gridCell];
    63.             
    64.         }
    65.     }
    66. }
    68. -(BeeUIGridCell *)gridCell{
    69.     NSObject * obj = objc_getAssociatedObject( self, "UITableViewCell.gridCell" );
    70.         if ( obj && [obj isKindOfClass:[BeeUIGridCell class]] )
    71.                 return (BeeUIGridCell *)obj;
    72.         return nil;
    73. }
    75. @end
    78. @implementation UITableView (BeeUIGirdCell)
    80. -(UITableViewCell *) dequeueReusableCellWithBeeUIGirdCellClass:(Class) clazz{
    81.     UITableViewCell *cell = [self dequeueReusableCellWithIdentifier:[clazz description]];
    82.     if (!cell) {
    83.         cell = [[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:[cell description]]autorelease];
    84.         cell.selectionStyle = UITableViewCellSelectionStyleNone;
    85.                 cell.accessoryType = UITableViewCellAccessoryNone;
    86.                 cell.editingAccessoryType = UITableViewCellAccessoryNone;
    87.                 cell.showsReorderControl = NO;
    88.                 cell.shouldIndentWhileEditing = NO;
    89.                 cell.indentationLevel = 0;
    90.                 cell.indentationWidth = 0.0f;
    91.                 self.alpha = 1.0f;
    92.                 self.layer.masksToBounds = YES;
    93.                 self.layer.opaque = YES;
    94.         
    95.                 cell.contentView.layer.masksToBounds = YES;
    96.                 cell.contentView.layer.opaque = YES;
    97.                 cell.contentView.autoresizesSubviews = YES;
    98.         if ( [clazz isSubclassOfClass:[BeeUIGridCell class]] )
    99.                 {
    100.                         cell.gridCell = [(BeeUIGridCell *)[[BeeRuntime allocByClass:clazz] init] autorelease];
    101.                 }
    102.     }
    103.     return cell;
    104. }
    106. @end
    复制代码
    为了下次重用这两个文件，把UITableView+BeeUIGirdCell.h和UITableView+BeeUIGirdCell.m放到Pods/BeeFramework/BeeFramework/MVC/View下，并在Pods/Headers下新建UITableView+BeeUIGirdCell.h的替身,
    1. ln -s ../../BeeFramework/BeeFramework/MVC/View/UITableView+BeeUIGirdCell.h UITableView+BeeUIGirdCell.h
    复制代码
    我们重新实现一下ViewController
    1. //
    2. //  ViewController1.h
    3. //  BeeFrameWorkTest
    4. //
    5. //  Created by he songhang on 13-6-4.
    6. //  Copyright (c) 2013年 he songhang. All rights reserved.
    7. //
    9. #import <UIKit/UIKit.h>
    11. @interface ViewController1 : UITableViewController
    13. @end
    复制代码
    1. //
    2. //  ViewController1.m
    3. //  BeeFrameWorkTest
    4. //
    5. //  Created by he songhang on 13-6-4.
    6. //  Copyright (c) 2013年 he songhang. All rights reserved.
    7. //
    9. #import "ViewController1.h"
    10. #import <BeeFramework/UITableView+BeeUIGirdCell.h>
    11. #import <BeeFramework/Bee.h>
    13. @interface MYGirdCell : BeeUIGridCell{
    14.     UILabel *lb_content;
    15.     UIButton *btn_count;
    16.     UIButton *btn_comment;
    17. }
    19. AS_SIGNAL(COUNT)
    20. AS_SIGNAL(COMMENT)
    22. @end
    24. @implementation MYGirdCell
    26. DEF_SIGNAL(COUNT)
    28. DEF_SIGNAL(COMMENT)
    30. //初始化
    31. -(void)load{
    32.     lb_content = [[UILabel alloc]init];
    33.     btn_count = [[UIButton alloc]init];
    34.     btn_comment = [[UIButton alloc]init];
    35.     
    36.     [btn_count addTarget:self action:@selector(countBtnClicked) forControlEvents:UIControlEventTouchUpInside];
    37.     [btn_comment addTarget:self action:@selector(commentBtnClicked) forControlEvents:UIControlEventTouchUpInside];
    38.     [btn_count setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];
    39.     btn_count.titleLabel.font = [UIFont systemFontOfSize:12];
    40.     [btn_comment setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];
    41.     btn_comment.titleLabel.font = [UIFont systemFontOfSize:12];
    42.     [self addSubview:lb_content];
    43.     [self addSubview:btn_comment];
    44.     [self addSubview:btn_count];
    45. }
    47. //释放
    48. -(void)unload{
    49.     
    50. }
    52. //数据变化时
    53. - (void)dataDidChanged
    54. {
    55.     if (self.cellData) {
    56.         NSDictionary *data = _cellData;
    57.         lb_content.text = [data stringAtPath:@"content"];
    58.         [btn_count setTitle:[NSString stringWithFormat:@"浏览(%@)",[data stringAtPath:@"count"]] forState:UIControlStateNormal];
    59.         [btn_comment setTitle:[NSString stringWithFormat:@"评论(%@)",[data stringAtPath:@"comment"]] forState:UIControlStateNormal];
    60.     }else{
    61.         lb_content.text = nil;
    62.         [btn_count setTitle:nil forState:UIControlStateNormal];
    63.         [btn_comment setTitle:nil forState:UIControlStateNormal];
    64.     }
    65. }
    67. //用于计算高度，可实现动态高度
    68. + (CGSize)sizeInBound:(CGSize)bound forData:(NSObject *)data
    69. {
    70.         return bound;
    71. }
    73. //用于布局
    74. - (void)layoutInBound:(CGSize)bound forCell:(BeeUIGridCell *)cell
    75. {
    76.     lb_content.frame = CGRectMake(10, 0, 300, 44);
    77.     btn_count.frame = CGRectMake(200, 20, 50, 14);
    78.     btn_comment.frame = CGRectMake(260, 20, 50, 14);
    79. }
    81. -(void)countBtnClicked{
    82.     [self sendUISignal:MYGirdCell.COUNT];
    83. }
    85. -(void)commentBtnClicked{
    86.     [self sendUISignal:MYGirdCell.COMMENT withObject:self.cellData];
    87. }
    89. @end
    91. @interface ViewController1 (){
    92.     NSArray *datas;
    93. }
    96. @end
    98. @implementation ViewController1
    100. -(void)handleUISignal_MYGirdCell:(BeeUISignal *)signal{
    101.     if ([signal is:MYGirdCell.COUNT]) {
    102.         MYGirdCell *cell = signal.source;
    103.         NSDictionary *dict = (NSDictionary *)cell.cellData;
    104.         CC(@"%@被点击",[dict stringAtPath:@"content"]);
    105.     }else if ([signal is:MYGirdCell.COMMENT]){
    106.         NSDictionary *dict = (NSDictionary *)signal.object;
    107.         CC(@"%@被评论",[dict stringAtPath:@"content"]);
    108.     }
    109. }
    111. - (id)initWithStyle:(UITableViewStyle)style
    112. {
    113.     self = [super initWithStyle:style];
    114.     if (self) {
    115.         // Custom initialization
    116.     }
    117.     return self;
    118. }
    120. - (void)viewDidLoad
    121. {
    122.     [super viewDidLoad];
    123.     NSDictionary *dict1 = [NSDictionary dictionaryWithObjectsAndKeys:@"测试数据1",@"content",@"20",@"count",@"3",@"comment", nil];
    124.     NSDictionary *dict2 = [NSDictionary dictionaryWithObjectsAndKeys:@"测试数据2",@"content",@"30",@"count",@"4",@"comment", nil];
    125.     NSDictionary *dict3 = [NSDictionary dictionaryWithObjectsAndKeys:@"测试数据3",@"content",@"10",@"count",@"2",@"comment", nil];
    126.     datas = [[NSArray alloc]initWithObjects:dict1,dict2,dict3, nil];
    127.         // Do any additional setup after loading the view, typically from a nib.
    128. }
    130. - (void)didReceiveMemoryWarning
    131. {
    132.     [super didReceiveMemoryWarning];
    133.     // Dispose of any resources that can be recreated.
    134. }
    136. #pragma mark -UITableViewDataSource
    138. - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;{
    139.     return [datas count];
    140. }
    142. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;{
    143.     UITableViewCell *cell = [tableView dequeueReusableCellWithBeeUIGirdCellClass:[MYGirdCell class]];
    144.     cell.gridCell.cellData = [datas objectAtIndex:indexPath.row];
    145.     return cell;
    146. }
    148. @end
    复制代码
    可以留意下MYGirdCell中的
    1. -(void)countBtnClicked{
    2.     [self sendUISignal:MYGirdCell.COUNT];
    3. }
    5. -(void)commentBtnClicked{
    6.     [self sendUISignal:MYGirdCell.COMMENT withObject:self.cellData];
    7. }
    复制代码
    对应于ViewController1中的
    1. -(void)handleUISignal_MYGirdCell:(BeeUISignal *)signal{
    2.     if ([signal is:MYGirdCell.COUNT]) {
    3.         MYGirdCell *cell = signal.source;
    4.         NSDictionary *dict = (NSDictionary *)cell.cellData;
    5.         CC(@"%@被点击",[dict stringAtPath:@"content"]);
    6.     }else if ([signal is:MYGirdCell.COMMENT]){
    7.         NSDictionary *dict = (NSDictionary *)signal.object;
    8.         CC(@"%@被评论",[dict stringAtPath:@"content"]);
    9.     }
    10. }
    复制代码
    本篇以UItableViewController演示了如何自定义UISignal，以及BeeUIGirdCell的用法。 
    以上代码下载地址:https://github.com/ilikeido/BeeFrameworkTest/tree/master/lesson3
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  • 原文地址：https://www.cnblogs.com/Camier-myNiuer/p/3821780.html
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