<pre name="code" class="java">//IOS主要用的是UIImagePickerControllerDelegate这个事件委托来实现照相以及进入照片库的
@protocol UIImagePickerControllerDelegate<NSObject>
@optional
// The picker does not dismiss itself; the client dismisses it in these callbacks.
// The delegate will receive one or the other, but not both, depending whether the user
// confirms or cancels.
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_NA,__MAC_NA,__IPHONE_2_0,__IPHONE_3_0);
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info;
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker; @end
应用ActionSheet弹出框 弹出三个按钮，共用户选择
：第一步：
//取得设备型号
#import <sys/types.h>
#import <sys/sysctl.h> - (NSString *) platform{
size_t size;
sysctlbyname("hw.machine", NULL, &size, NULL, );
char *machine = malloc(size);
sysctlbyname("hw.machine", machine, &size, NULL, );
NSString *platform = [NSString stringWithUTF8String:machine];
free(machine);
return platform;
} - (NSString *) platformString{
NSString *platform = [self platform];
if ([platform isEqualToString:@"iPhone1,1"]) return @"iPhone 1G";
if ([platform isEqualToString:@"iPhone1,2"]) return @"iPhone 3G";
if ([platform isEqualToString:@"iPhone2,1"]) return @"iPhone 3GS";
if ([platform isEqualToString:@"iPhone3,1"]) return @"iPhone 4";
if ([platform isEqualToString:@"iPhone3,2"]) return @"Verizon iPhone 4";
if ([platform isEqualToString:@"iPod1,1"]) return @"iPod Touch 1G";
if ([platform isEqualToString:@"iPod2,1"]) return @"iPod Touch 2G";
if ([platform isEqualToString:@"iPod3,1"]) return @"iPod Touch 3G";
if ([platform isEqualToString:@"iPod4,1"]) return @"iPod Touch 4G";
if ([platform isEqualToString:@"iPad1,1"]) return @"iPad";
if ([platform isEqualToString:@"iPad2,1"]) return @"iPad 2 (WiFi)";
if ([platform isEqualToString:@"iPad2,2"]) return @"iPad 2 (GSM)";
if ([platform isEqualToString:@"iPad2,3"]) return @"iPad 2 (CDMA)";
if ([platform isEqualToString:@"i386"]) return @"Simulator";
return platform;
} ：第二步：
实现UIActionSheetDelegate委托方法
@protocol UIActionSheetDelegate <NSObject>
@optional
// Called when a button is clicked. The view will be automatically dismissed after this call returns
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex;
// Called when we cancel a view (eg. the user clicks the Home button). This is not called when the user clicks the cancel button.
// If not defined in the delegate, we simulate a click in the cancel button
- (void)actionSheetCancel:(UIActionSheet *)actionSheet;
- (void)willPresentActionSheet:(UIActionSheet *)actionSheet; // before animation and showing view
- (void)didPresentActionSheet:(UIActionSheet *)actionSheet; // after animation
- (void)actionSheet:(UIActionSheet *)actionSheet willDismissWithButtonIndex:(NSInteger)buttonIndex; // before animation and hiding view
- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex; // after animation
@end //选择ActionSheet的初始化，并弹出ActionSheet
-(IBAction) chooseHeadPhoto{
UIActionSheet *actionSheet=[[UIActionSheet alloc] init];
if (deviceType == @"Simulator" || deviceType == @"iPad"||deviceType == @"iPod Touch 1G"
||deviceType == @"iPod Touch 2G"||deviceType== @"iPod Touch 3G")
{
if (contactsAdd.Photo != nil)
actionSheet=[[UIActionSheet alloc]
initWithTitle:nil
delegate:self
cancelButtonTitle:@"Cancel"
destructiveButtonTitle:@"Delete this Photo"
otherButtonTitles:@"Choose Photo",nil];
else {
actionSheet=[[UIActionSheet alloc]
initWithTitle:nil
delegate:self
cancelButtonTitle:@"Cancel"
destructiveButtonTitle:nil
otherButtonTitles:@"Choose Photo",nil];
}
}
else {
if (contactsAdd.Photo != nil)
actionSheet=[[UIActionSheet alloc]
initWithTitle:nil
delegate:self
cancelButtonTitle:@"Cancel"
destructiveButtonTitle:@"Delete this Photo"
otherButtonTitles:@"Choose Photo",@"Take Photo",nil];
else {
actionSheet=[[UIActionSheet alloc]
initWithTitle:nil
delegate:self
cancelButtonTitle:@"Cancel"
destructiveButtonTitle:nil
otherButtonTitles:@"Choose Photo",@"Take Photo",nil];
}
}
[actionSheet showInView:self.view];
[actionSheet release];
} //实现委托方法中的clickedButtonAtIndex
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{
if(!(deviceType == @"Simulator" || deviceType == @"iPad"||deviceType == @"iPod Touch 1G"||deviceType == @"iPod Touch 2G"||deviceType== @"iPod Touch 3G"))
{
//有头像
if (contactsAdd.Photo != nil)
{
//返回
if(buttonIndex == )
{
return;
}
//删除
if(buttonIndex==)
{
NSString *imagePath = [NSString stringWithFormat:@"%@/%@.jpg", self.documentsPath, contactsAdd.Photo];
NSError *error = nil;
if([fileManager fileExistsAtPath:imagePath])
{
[fileManager removeItemAtPath:imagePath error:&error];
}
contactsAdd.Photo = nil;
// headImageView.image = nil;
// headImageView.image=[UIImage imageNamed:@"nophoto65px.png"];
}
//选择
if(buttonIndex == )
{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
{
[picker.navigationBar setTintColor:[UIColor colorWithRed:222.0/255.0 green:109.0/255.0 blue:144.0/255.0 alpha:1.0]];
//给navigationBar设置背景图片
if ([picker.navigationBar respondsToSelector:@selector(setBackgroundImage:forBarMetrics:)]) {
[picker.navigationBar setBackgroundImage:[UIImage imageNamed:@"64px.png"] forBarMetrics:UIBarMetricsDefault];
}
[picker.navigationBar setFrame:CGRectMake(, , , )];
picker.navigationBar.layer.contents = (id)[UIImage imageNamed:@"64px.png"].CGImage;
}
else {
[picker.navigationBar setTintColor:[UIColor colorWithRed:208.0/255.0 green:75.0/255.0 blue:109.0/255.0 alpha:1.0]];
//给navigationBar设置背景图片
if ([picker.navigationBar respondsToSelector:@selector(setBackgroundImage:forBarMetrics:)]) {
[picker.navigationBar setBackgroundImage:[UIImage imageNamed:@"a_nav_bg.png"] forBarMetrics:UIBarMetricsDefault];
}
} picker.delegate = self;
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
[picker setModalPresentationStyle:UIModalPresentationFormSheet];
}
[self presentModalViewController:picker animated:YES];
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
{
[picker.view.superview setFrame:CGRectMake(, , picker.view.frame.size.width, )];
}
[picker release];
}
//取像
if(buttonIndex == )
{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
{
[picker.navigationBar setTintColor:[UIColor colorWithRed:222.0/255.0 green:109.0/255.0 blue:144.0/255.0 alpha:1.0]];
//给navigationBar设置背景图片
if ([picker.navigationBar respondsToSelector:@selector(setBackgroundImage:forBarMetrics:)]) {
[picker.navigationBar setBackgroundImage:[UIImage imageNamed:@"64px.png"] forBarMetrics:UIBarMetricsDefault];
}
[picker.navigationBar setFrame:CGRectMake(, , , )];
picker.navigationBar.layer.contents = (id)[UIImage imageNamed:@"64px.png"].CGImage;
}
else {
[picker.navigationBar setTintColor:[UIColor colorWithRed:208.0/255.0 green:75.0/255.0 blue:109.0/255.0 alpha:1.0]];
//给navigationBar设置背景图片
if ([picker.navigationBar respondsToSelector:@selector(setBackgroundImage:forBarMetrics:)]) {
[picker.navigationBar setBackgroundImage:[UIImage imageNamed:@"a_nav_bg.png"] forBarMetrics:UIBarMetricsDefault];
}
}
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.delegate=self;
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
[picker setModalPresentationStyle:UIModalPresentationFormSheet];
}
[self presentModalViewController:picker animated:YES];
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
{
[picker.view.superview setFrame:CGRectMake(, , picker.view.frame.size.width, )];
}
[picker release];
}
}
}
}
：第三步：
实现UIImagePickerControllerDelegate的委托方法
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_NA,__MAC_NA,__IPHONE_2_0,__IPHONE_3_0);
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker;
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)selectedImage editingInfo:(NSDictionary *)editingInfo { NSString *imagePath = [NSString stringWithFormat:@"%@/%@.jpg", self.documentsPath, contactsAdd.Photo];
NSError *error = nil;
if([fileManager fileExistsAtPath:imagePath])
{
[fileManager removeItemAtPath:imagePath error:&error];
}
contactsAdd.Photo = nil;
CFUUIDRef theUUID = CFUUIDCreate(NULL);
CFStringRef string = CFUUIDCreateString(NULL, theUUID);
CFRelease(theUUID);
imageName = (NSString *)string;
//将图层的边框设置为圆脚
headImageView.layer.cornerRadius = ;
headImageView.layer.masksToBounds = YES;
headImageView.image = [ImageUtility imageByScalingAndCroppingForSize:selectedImage withTargetSize:CGSizeMake(,)];
headNewImageData= [NSData dataWithData:UIImageJPEGRepresentation(headImageView.image, .f)];
[headNewImageData retain];
[self dismissModalViewControllerAnimated:YES];
} - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
[self dismissModalViewControllerAnimated:YES];
}
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- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info;
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当用户选取完成后调用；
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- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker; |
当用户取消选取时调用；
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- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info;
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选取的信息都在info中，info 是一个字典。
字典中的键：
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NSString *const UIImagePickerControllerMediaType ;指定用户选择的媒体类型（文章最后进行扩展）NSString *const UIImagePickerControllerOriginalImage ;原始图片NSString *const UIImagePickerControllerEditedImage ;修改后的图片NSString *const UIImagePickerControllerCropRect ;裁剪尺寸NSString *const UIImagePickerControllerMediaURL ;媒体的URLNSString *const UIImagePickerControllerReferenceURL ;原件的URLNSString *const UIImagePickerControllerMediaMetadata;当来数据来源是照相机的时候这个值才有效 |
UIImagePickerController 的更多参数参考这里。
代理中的功能参考这里。
UIImagePickerControllerMediaType 包含着KUTTypeImage 和KUTTypeMovie
KUTTypeImage 包含：
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const CFStringRef kUTTypeImage ;抽象的图片类型const CFStringRef kUTTypeJPEG ;const CFStringRef kUTTypeJPEG2000 ;const CFStringRef kUTTypeTIFF ;const CFStringRef kUTTypePICT ;const CFStringRef kUTTypeGIF ;const CFStringRef kUTTypePNG ;const CFStringRef kUTTypeQuickTimeImage ;const CFStringRef kUTTypeAppleICNS const CFStringRef kUTTypeBMP;const CFStringRef kUTTypeICO; |
KUTTypeMovie 包含：
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const CFStringRef kUTTypeAudiovisualContent ;抽象的声音视频const CFStringRef kUTTypeMovie ;抽象的媒体格式（声音和视频）const CFStringRef kUTTypeVideo ;只有视频没有声音const CFStringRef kUTTypeAudio ;只有声音没有视频const CFStringRef kUTTypeQuickTimeMovie ;const CFStringRef kUTTypeMPEG ;const CFStringRef kUTTypeMPEG4 ;const CFStringRef kUTTypeMP3 ;const CFStringRef kUTTypeMPEG4Audio ;const CFStringRef kUTTypeAppleProtectedMPEG4Audio; |