1：tableviewcell的宽度设置
在你的自定义的tableviewcell的m文件里加入下面方法：
view plain
- -(void)layoutSubviews
- {
- [super layoutSubviews];
- CGRect frame = self.backgroundView.frame;
- frame.origin.x += 18;
- frame.size.width -= 36;
- self.backgroundView.frame = frame;
- frame = self.contentView.frame;
- frame.origin.x += 18;
- frame.size.width -= 36;
- self.contentView.frame = frame;
- }
重写了tableviewcell的layoutSubviews的方法，调整一下backgroundview和contentview的frame就行了。
UITableViewCell包含图像,文本等.
NSString *CellIdentifier = [ [ NSString alloc ] initWithString: @"Frank" ];
UITableViewCell *cell = [ [ [ UITableViewCell alloc ]
initWithFrame: CGRectZero
reuseIdentifier: CellIdentifier
] autorelease
];
然后你可以为每一个cell设置不同的风格
(1) 显示文本: cell.text = @"Frank's Table Cell";
(2) 对齐: cell.textAlignment = UITextAlignmentLeft;UITextAlignmentLeft 默认是左对齐
UITextAlignmentRight 右对齐
UITextAlignmentCenter 中对齐
(3) 字体和尺寸:
#import
UIFont *myFont = [ UIFont fontWithName: @"Arial" size: 18.0 ];
cell.font = myFont;
//系统字体
UIFont *mySystemFont = [ UIFont systemFontOfSize: 12.0 ];
UIFont *myBoldSystemFont = [ UIFont boldSystemFontOfSize: 12.0 ];
UIFont *myItalicSystemFont = [ UIFont italicSystemFontOfSize: 12.0 ];
(4) 颜色
#import
cell.textColor = [ UIColor redColor ];
//当前选择项的颜色cell.selectedTextColor = [ UIColor blueColor ];
(5) 图像
//从你应用程序目录下的文件创建一个image
cell.image = [ UIImage imageNamed: @"cell.png" ];//当前选中项的图形
cell.selectedImage = [ UIImage imageNamed: @"selected_cell.png" ];
可以修改table保准行高来适应你的图形高度- (id)init
{
self = [ super init ];
if (self != nil) {
self.tableView.rowHeight = 65;
}
return self;
}
你也可以为每一个cell定义不同的高度- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if ([ indexPath indexAtPosition: 1 ] == 0)
return 65.0;
else
return 40.0;
}
(6)选中项的风格cell.selectionStyle = UITableViewCellSelectionStyleBlue;
UITableViewCellSelectionStyleBlue 默认选中项是蓝色
UITableViewCellSelectionStyleGray 灰色
UITableViewCellSelectionStyleNone 没有变化
(7)标签 (labels)
在偏移量100x0处创建一个尺寸50x50 label:
UILabel *label = [ [ UILabel alloc ] initWithFrame: CGRectMake(100.0, 0.0, 50.0, 50.0) ];
label.text = @"Label Text";
label.textAlignment = UITextAlignmentLeft;
label.textColor = [ UIColor redColor ];
label.font = [ UIFont fontWithName: @"Arial" size: 10.0 ];
标签label可以设置文本阴影,甚至可以定义阴影的偏移:
label.shadowColor = [ UIColor grayColor ];
label.shadowOffset = CGSizeMake(0, -1);
高亮是的颜色:
label.highlightedTextColor = [ UIColor blackColor ];标签的背景色:
label.backgroundColor = [ UIColor blueColor ];
把标签加到cell里[ cell addSubview: label ];
(8) 附件cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
Style| UITableViewCellAccessoryNone | 没有附件 |
| UITableViewCellAccessoryDisclosureIndicator | 黑色向右的箭头 |
| UITableViewCellAccessoryDetailDisclosureButton | 蓝色附件按钮 |
| UITableViewCellAccessoryCheckmark | 复选框,支持选择 |
7.3 实现多选
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(@"Selected section %d, cell %d",
[ indexPath indexAtPosition: 0 ], [ indexPath indexAtPosition: 1 ]);
//获的当前选择项
UITableViewCell *cell = [ self.tableView cellForRowAtIndexPath: indexPath ];
//显示复选框
if (cell.accessoryType == UITableViewCellAccessoryNone)
cell.accessoryType = UITableViewCellAccessoryCheckmark;
else
cell.accessoryType = UITableViewCellAccessoryNone;
}
7.4 编辑和删除
在允许用户删除和编辑的时候,每一个cell左边会显示一个红色删除图标
[ self.tableView setEditing:YES animated:YES ];关闭编辑的时候,table顶部会显示一个Edit导航条
[ self.tableView setEditing: NO animated: YES ];
在编辑过程中,如果用户要删除该项,会弹出一个删除确认框. 确认后调 UITableViewDataSource类的 commitEditingStyle方法来通知你的应用程序, 然后你可以从你的底层数据源里删除该项,并通知table view删除该行.- (void)tableView:(UITableView *)tableView
commitEditingStyle:(UITableViewCellEditingStyle) editingStyle
forRowAtIndexPath:(NSIndexPath *) indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete)
{
NSLog(@"Deleted section %d, cell %d", [ indexPath indexAtPosition: 0 ], [ indexPath indexAtPosition: 1 ]);
NSMutableArray *array = [ [ NSMutableArray alloc ] init ];
[ array addObject: indexPath ];
[ self.tableView deleteRowsAtIndexPaths: array
withRowAnimation: UITableViewRowAnimationFade
];
}
}
通过传递一个数组给deleteRowsAtIndexPaths方法, 可以删除一行或多行.
withRowAnimation至此下列预定义的删除动画
| UITableViewRowAnimationFade | Cell fades out |
| UITableViewRowAnimationRight | Cell slides out from right |
| UITableViewRowAnimationLeft | Cell slides out from left |
| UITableViewRowAnimationTop | Cell slides out to top of adjacent cell |
| UITableViewRowAnimationBottom | Cell slides out to bottom of adjacent cell |
7.5 重新加载表
当你的数据变了的时候,你可以重新加载整个表
[ self.tableView reloadData ];
7.6 TableDemo: Simple File Browser
这个例子列表你应用程序home目录里的文件和目录
(1) TableDemo main (main.m)
#import int main(int argc, char *argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; int retVal = UIApplicationMain(argc, argv, nil, @"TableDemoAppDelegate"); [pool release]; return retVal; } |
(2)TableDemo application delegate
prototypes (TableDemoAppDelegate.h)
#import @class TableDemoViewController; @interface TableDemoAppDelegate : NSObject { UIWindow *window; TableDemoViewController *viewController; UINavigationController *navigationController; } @property (nonatomic, retain) IBOutlet UIWindow *window; @property (nonatomic, retain) IBOutlet TableDemoViewController *viewController; @end |
(TableDemoAppDelegate.m)
#import "TableDemoAppDelegate.h" #import "TableDemoViewController.h" @implementation TableDemoAppDelegate @synthesize window; @synthesize viewController; - (void)applicationDidFinishLaunching:(UIApplication *)application { CGRect screenBounds = [ [ UIScreen mainScreen ] bounds ]; self.window = [ [ [ UIWindow alloc ] initWithFrame: screenBounds ] autorelease ]; viewController = [ [ TableDemoViewController alloc ] init ]; navigationController = [ [ UINavigationController alloc ] init WithRootViewController: viewController ]; [ window addSubview: [ navigationController view ] ]; [ window makeKeyAndVisible ]; } - (void)dealloc { [viewController release]; [window release]; [super dealloc]; } @end |
(3) TableDemo view controller
prototype (TableDemoViewController.h)
#import @interface TableDemoViewController : UITableViewController { NSMutableArray *fileList; } - (void) startEditing; - (void) stopEditing; - (void) reload; @end |
(TableDemoViewController.m)
#import "TableDemoViewController.h" @implementation TableDemoViewController - (id)init { self = [ super init ]; if (self != nil) { [ self reload ]; self.navigationItem.rightBarButtonItem = [ [ [ UIBarButtonItem alloc ] initWithBarButtonSystemItem: UIBarButtonSystemItemEdit target: self action: @selector(startEditing) ] autorelease ]; self.navigationItem.leftBarButtonItem = [ [ [ UIBarButtonItem alloc ] initWithTitle:@"Reload" style: UIBarButtonItemStylePlain target: self action:@selector(reload) ] autorelease ]; } return self; } - (void) stopEditing { [ self.tableView setEditing: NO animated: YES ]; self.navigationItem.rightBarButtonItem = [ [ [ UIBarButtonItem alloc ] initWithBarButtonSystemItem: UIBarButtonSystemItemEdit target: self action: @selector(startEditing) ] autorelease ]; } - (void) reload { NSDirectoryEnumerator *dirEnum; NSString *file; fileList = [ [ NSMutableArray alloc ] init ]; dirEnum = [ [ NSFileManager defaultManager ] enumeratorAtPath: NSHomeDirectory() ]; while ((file = [ dirEnum nextObject ])) { [ fileList addObject: file ]; } [ self.tableView reloadData ]; } - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 1; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsIn Section:(NSInteger)section { return [ fileList count ]; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRow AtIndexPath:(NSIndexPath *)indexPath { NSString *CellIdentifier = [ fileList objectAtIndex: [ indexPath indexAtPosition: 1 ] ]; UITableViewCell *cell = [ tableView dequeueReusableCellWithIdentifier: CellIdentifier ]; if (cell == nil) { cell = [ [ [ UITableViewCell alloc ] initWithFrame: CGRectZero reuseIdentifier: CellIdentifier ] autorelease ]; cell.text = CellIdentifier; UIFont *font = [ UIFont fontWithName: @"Courier" size: 12.0 ]; cell.font = font; } return cell; } - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle) editingStyle forRowAtIndexPath:(NSIndexPath *) indexPath { if (editingStyle == UITableViewCellEditingStyleDelete) { UITableViewCell *cell = [ self.tableView cellForRowAtIndexPath: indexPath ]; for(int i = 0; i < [ fileList count ]; i++) { if ([ cell.text isEqualToString: [ fileList objectAtIndex: i ] ]) { [ fileList removeObjectAtIndex: i ]; } } NSMutableArray *array = [ [ NSMutableArray alloc ] init ]; [ array addObject: indexPath ]; [ self.tableView deleteRowsAtIndexPaths: array withRowAnimation: UITableViewRowAnimationTop ]; } } - (void)tableView:(UITableView *)tableView didSelectRowAt IndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell = [ self.tableView cellForRowAtIndexPath: indexPath ]; UIAlertView *alert = [ [ UIAlertView alloc ] initWithTitle: @"File Selected" message: [ NSString stringWithFormat: @"You selected the file '%@'", cell.text ] delegate: nil cancelButtonTitle: nil otherButtonTitles: @"OK", nil ]; [ alert show ]; } - (void)loadView { [ super loadView ]; } - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterface Orientation)interfaceOrientation { return YES; } - (void)didReceiveMemoryWarning { [ super didReceiveMemoryWarning ]; } - (void)dealloc { [ fileList release ]; [ super dealloc ]; } @end |
转载自：http://blog.sina.com.cn/s/articlelist_1654117677_0_1.html（这个作者还有很多关于tableview的使用指南，赞一个！！！用到常看看）