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UILable UILabel *lable = [[UILabel alloc] initWithFrame:CGRectMake(30, 0, 200, 20)]; //放的内容 lable.text = lable.tag = TITLELABLETAG; //字体大小 lable.textColor = [UIColor colorWithRed:186.0/225 green:164.0/225 blue:115/225 alpha:1.0]; //背景颜色 lable.backgroundColor = [UIColor clearColor]; //放的位置 lable.textAlignment = UITextAlignmentCenter; //字体大小 lable.font = [UIFont systemFontOfSize:20.0f]; [view addSubview:lable]; TableView //要在头文件中实现UITableViewDelegate 和 UITableViewDataSource 协议 可以通过xib关联 //tableView 的方法 通过button 绑定的方法 -(void)edit{ //可以编译了 设过后系统就会调用下面的方法 //- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath //- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath [_tableView setEditing:!_tableView.editing animated:YES]; } //tableViewdelegate - (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath{ //编译风格 return UITableViewCellEditingStyleInsert; } - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath{ // 交换行 //int row = [indexPath row]; // // [_shuArray removeObjectAtIndex:row]; // // NSArray *arr = [NSArray arrayWithObject:indexPath]; // // // [_tableView deleteRowsAtIndexPaths:arr withRowAnimation: UITableViewRowAnimationFade]; // //int row = [indexPath row]; [_shuArray addObject:@"1"]; NSArray *arr = [NSArray arrayWithObject:indexPath]; [_tableView insertRowsAtIndexPaths:arr withRowAnimation:UITableViewRowAnimationFade]; NSLog(@"%d",[_shuArray count]); } - (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath{ //删去行 先删数据 在删去行 NSArray *temp = [[_shuArray objectAtIndex:sourceIndexPath.row]retain]; //该过程是将_shuarray保存的对象的指针给了temp。但remove会将该对象给释放掉 所以需要retain一次 [_shuArray removeObjectAtIndex:sourceIndexPath.row]; [_shuArray insertObject:temp atIndex:destinationIndexPath.row]; [temp release]; } - (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath{ NSLog(@"return nil"); //将要选择那一行 先执行 if (indexPath.row < 2) { NSString *message = [NSString stringWithFormat:@"你选择的是第%d行",[indexPath row]]; UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"标题" message:message delegate:nil cancelButtonTitle:@"cancel" otherButtonTitles:@"ok",nil]; [alert show]; [alert release]; return nil; } else { return indexPath; } return 0; } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{ //已经选择那一行 后执行 } #pragma mark - #pragma mark UITableViewDataSource //必须完成的UITableViewDataSource的方法 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{ //区数 return 1; } - (NSInteger)tableView:(UITableView *)table numberOfRowsInSection:(NSInteger)section{ //每一个区的行数 return [_shuArray count]; NSLog(@"(NSInteger)tableView"); } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ //创建可重复利用的cell indexPath 包括 row section 两个属性 就好像point一样 static NSString *CellIdentifier = @"Cell"; NSLog(@"本方法被调用了"); UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; NSLog(@"congjianle"); cell.imageView.image = [UIImage imageNamed:@"fo.png"]; cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton; cell.selectionStyle = UITableViewCellSelectionStyleNone; } cell.textLabel.text = [_shuArray objectAtIndex:indexPath.row]; //设计选中的风格 return cell; } //用xib自定义cell 1。建立一个继承与uitableviewcell的基本的类 2。建立一个空的xib xib的属性为上面建立的uitableviewcell的基本的类并且设置他的Identifier（重复利用）标志Cell 3 。通过下面找到该cell static NSString *CellIdentifier = @"Cell"; ZBYDishTableViewCell *cell =(ZBYDishTableViewCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (!cell) { NSArray *array = [[NSBundle mainBundle] loadNibNamed:@"ZBYDishTableViewCell" owner:nil options:nil]; for (id oneObject in array) { if ([oneObject isKindOfClass:[ZBYDishTableViewCell class]]) { cell = (ZBYDishTableViewCell *)oneObject; break; } } } return cell; //设计均匀排部的button
UINavigationBar UINavigationBar *navBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, frame.size.width, 44)]; [self addSubview:navBar]; [navBar release]; UINavigationItem *navItem = [[UINavigationItem alloc]initWithTitle:@"高分榜" ]; UIBarButtonItem *barButtonItem =[[UIBarButtonItem alloc] initWithTitle:@"返回" style:UIBarButtonItemStyleBordered target:self action:@selector(back)]; navItem.leftBarButtonItem = barButtonItem; navItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"删去" style: UIBarButtonItemStyleDone target:self action:@selector(delete)]; [navBar pushNavigationItem:navItem animated:NO]; 设置时间 NSDate *currentDate = [NSDate date]; NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"yyyy_MM_dd"];
[formatter setDateFormat:@"HH:mm:ss"]; [formatter setAMSymbol:@"上午"]; [formatter setPMSymbol:@"下午"]; NSString *string = [formatter stringFromDate:currentDate]); 图片上传 //要完成UIImagePickerControllerDelegate 和UINavigationControllerDelegate UIImagePickerController *myPicker = [[UIImagePickerController alloc] init]; myPicker.delegate = self; switch ([sender tag]) { //选择上传的类型 case 1: //像册 if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypePhotoLibrary] ) { myPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; [self presentModalViewController:myPicker animated:YES]; [myPicker release]; } break; //相机 case 2: if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera]) { myPicker.sourceType = UIImagePickerControllerSourceTypeCamera; [self presentModalViewController:myPicker animated:YES]; [myPicker release]; } break; case 3: //胶卷 if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeSavedPhotosAlbum]) { myPicker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum; [self presentModalViewController:myPicker animated:YES]; [myPicker release]; } break; default: break; } } #pragma mark- #pragma mark UIImagePickerControllerDelegate - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo{ if (picker.sourceType = UIImagePickerControllerSourceTypeCamera ) { UIImageWriteToSavedPhotosAlbum(image, self, nil, nil); [self dismissModalViewControllerAnimated:YES]; } else { _myImageView.frame = CGRectMake(120, 0, 75 * 2.5, 75 * 2.5); _myImageView.image = image; [self.view addSubview:_myImageView]; [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:0.4]; [UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:_myImageView cache:YES]; _myImageView.frame = CGRectMake(0, 0, 50, 50); [UIView commitAnimations] ; [picker dismissModalViewControllerAnimated:YES]; } } 用NSOperationQueue下载图片 参考http大讲堂的fromtable //先在头文件中创建 NSOperationQueue *_queue; NSMutableDictionary *_dic; //再在m文件中创建 _queue = [[NSOperationQueue alloc] init]; _dic = [[NSMutableDictionary alloc] init]; //放在一个循环中执行 //占位图片 UIImageView *imgView=(UIImageView *)[cell.contentView viewWithTag:5]; imgView.image=[UIImage imageNamed:@"a.png"]; NSString *currRow=[NSString stringWithFormat:@"%d",indexPath.row]; NSString *fullPath=[dict objectForKey:currRow]; if (fullPath) {//字典里当前行有图片就直接取值显示 UIImage *img=[UIImage imageWithContentsOfFile:fullPath]; imgView.image=img; } else {//没有就下载 ImageLoader *imgLoader=[[ImageLoader alloc] initWithInfo:menu.imgPath view:cell.contentView dict:dict row:currRow]; [queue addOperation:imgLoader]; } //创建一个ImageLoader的类并继承自NSOperation 并交给main方法执行 把下载图片的重任交给main方法执行，将相当于启动一个线程去执行下载 界面跳转方法 //弹到另一个界面的方法1 -(void)setCurrentViewController:(UIViewController *)newViewController{ if (_viewController != newViewController) { if (_viewController) { [_viewController.view removeFromSuperview]; [_viewController release]; } _viewController = [newViewController retain]; [window addSubview:_viewController.view]; } } //弹到另一个界面的方法2 //setAnimationTransition 旋转方式 UIViewAnimationTransitionNone, UIViewAnimationTransitionFlipFromLeft, UIViewAnimationTransitionFlipFromRight, UIViewAnimationTransitionCurlUp, UIViewAnimationTransitionCurlDown, [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:1]; [UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:self.view cache:YES]; //[self.view exchangeSubviewAtIndex:1 withSubviewAtIndex:2]; [UIView commitAnimations]; //弹到另一个界面的方法3 导航 压榨入 [self.navigationController pushViewController:<#(UIViewController *)viewController#> animated:YES]; //压榨出 [self.navigationController popViewControllerAnimated:YES ]; //弹到另一个界面的方法4 模态弹出 //弹出方式 self.modalTransitionStyle = UIModalTransitionStyleCoverVertical = 0, UIModalTransitionStyleFlipHorizontal, UIModalTransitionStyleCrossDissolve, [self presentModalViewController:<#(UIViewController *)modalViewController#> animated:YES]; [self dismissModalViewControllerAnimated:YES]; 电影播放 //导入框架MediaPlayer #import <MediaPlayer/MediaPlayer.h> 1MPMoviePlayerViewController *viewPlayer = [[MPMoviePlayerViewController alloc] initWithContentURL:url]; viewPlayer.moviePlayer.shouldAutoplay = YES; [viewPlayer.moviePlayer setFullscreen:YES animated:YES]; [self presentModalViewController:viewPlayer animated:YES]; [viewPlayer shouldAutorotateToInterfaceOrientation:UIInterfaceOrientationLandscapeRight]; 2 MPMoviePlayerController *mp = [[MPMoviePlayerController alloc] initWithContentURL:url]; if (mp)//如果不为空 { self.moviePlayer = mp; [mp release]; [self.moviePlayer play];//播放对象 //4.0专用 self.moviePlayer.view.frame = CGRectMake(155, 180, 160, 250); [self.view addSubview:_moviePlayer.view]; } 运动学 计算一般按点的坐标来算。首先要判断点所在的象限，主要是通过 x2－x1 和 0 的关系， y2－y1 和0 的关系，来确定所在象限。 然后计算坐标的角度。来设置打击精确度和雪花运动的方向。
矩形碰撞问题
x1+w1>x2 &&x2+w2>x1 y2+h2>y1 && y1+h1>y2;
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