20100-10-31 ChineseName 中技术要点备忘 _chinesename.html-优快云博客

截屏操作

// 对指定 UIView 截屏并保存到IPHONE相册中

-(void) saveViewToPhoto:(UIView*) view
{
if(view == nil)
{
view = self.view;
}

CGSize size = view.bounds.size;
size.height = size.height - 37; // 减去操作“按钮”

UIGraphicsBeginImageContext(size);     //

    [view.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    UIImageWriteToSavedPhotosAlbum(viewImage, nil, nil, nil);
}

// 使用MFMailComposeViewController

// MFMailComposeViewController 是IPHONE 内置发邮件组件，使用它可以在自己的应用弹出发邮件界面且不需要退出当前应用。 MFMailComposeViewController 可以在程序中指定接收人组、抄送组、邮件主体及附件也可以在弹出的界面中手工指定

使用条件：

1. 首先需要设备支持在IPHONE 或IPOD TOUCH 中设置好一个可用邮件。

2. 开发SDK 要3.0以后

其它的就是代码了如下：

// 首判断你的设备或系统是否能够使用MFMailComposeViewController 发送邮件
BOOL isCanSend = [MFMailComposeViewController canSendMail];
if (isCanSend == NO)
{
UIAlertView* alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Send Error", @"")
message:NSLocalizedString(@"Can'nt Send EMail.", nil)
delegate:nil cancelButtonTitle:NSLocalizedString(@"Ok", "ok") otherButtonTitles:nil];

[alert show];

[alert release];

return;
}

// 创建 MFMC 实例
MFMailComposeViewController* eMailPicker = [[MFMailComposeViewController alloc] init];

// 指定处理委托为当前类
eMailPicker.mailComposeDelegate = self;
// 设置标题
[eMailPicker setSubject:[NSString stringWithFormat:@"%@ %@",enName.text, NSLocalizedString(@"Chinese Name Information", nil)]];

// 获取主体内容可以自定义
NSString* emailBoy = [self getEMailBody];
// 设置邮件主体非HTML格式
[eMailPicker setMessageBody:emailBoy isHTML:NO];
// 生成一个附件二进制数据
NSData* a1 = UIImagePNGRepresentation(totemImageView.image);
// 添加一个附件 PNG图像
[eMailPicker addAttachmentData:a1 mimeType:@"image/png" fileName:totemName.text];
   // 添加另一个附件
   NSData* a2 = UIImagePNGRepresentation(propertyImageView.image);
[eMailPicker addAttachmentData:a2 mimeType:@"image/png" fileName:propertyName.text];

弹出发邮件界面
[self presentModalViewController:eMailPicker animated:YES];

[eMailPicker release];

还需要一个返回处理状态的委托

// 根据发送邮件邮件服务器处理返回状态在界面上做相应的提示信息并消掉邮件发送界面。

- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{
NSString* sendInfo;

if (result == MFMailComposeResultCancelled)
{
sendInfo = [NSString stringWithString:NSLocalizedString(@"Send EMail Cancelled!", nil)];
}
else if(result == MFMailComposeResultSaved)
{
sendInfo = [NSString stringWithString:NSLocalizedString(@"Send EMail Saved!", nil)];
}
else if(result == MFMailComposeResultFailed)
{
sendInfo = [NSString stringWithString:NSLocalizedString(@"Send EMail Failed!", nil)];
}
else
{
sendInfo = [NSString stringWithString:NSLocalizedString(@"Send EMail Sent!", nil)];
}

[self dismissModalViewControllerAnimated:YES];

// NSLocalizedString(@"Send Succeeded!", nil)

UIAlertView * alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Send EMail", nil)
message:sendInfo delegate:nil
cancelButtonTitle:NSLocalizedString(@"Ok",nil) otherButtonTitles:nil];

[alert show];

[alert release];

}