ios中关于UIImagePickerController的一些知识总结
记得添加MobileCoreServices.framework
及导入#import <MobileCoreServices/MobileCoreServices.h>
- @interface PPViewController ()<UIActionSheetDelegate,UINavigationControllerDelegate, UIImagePickerControllerDelegate>
- {
- UIImagePickerController *_pickerController;
- }
- @property (weak, nonatomic) IBOutlet UIImageView *imageView;
- @end
- @implementation PPViewController
- - (void)viewDidLoad
- {
- [super viewDidLoad];
- _pickerController = [[UIImagePickerController alloc] init];
- _pickerController.delegate = self;//设置代理
- _pickerController.allowsEditing = YES;//图片可编辑(放大缩小)
- }
- - (IBAction)choseImage:(id)sender
- {
- // 判断是否有相机
- if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
- {
- //判断是否能摄像
- if ([[UIImagePickerController availableMediaTypesForSourceType:_pickerController.sourceType] containsObject:(NSString *)kUTTypeMovie])
- {
- _pickerController.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie];
- UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"cancel" destructiveButtonTitle:nil otherButtonTitles:@"相册",@"相机",@"摄像机", nil];
- sheet.tag = ;
- [sheet showInView:self.view];
- }
- else
- {
- UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"cancel" destructiveButtonTitle:nil otherButtonTitles:@"相机",@"相册", nil];
- sheet.tag = ;
- [sheet showInView:self.view];
- }
- }
- else
- {//模拟器
- UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"cancel" destructiveButtonTitle:nil otherButtonTitles:@"相册", nil];
- sheet.tag = ;
- [sheet showInView:self.view];
- }
- }
- #pragma mark- UIActionSheet的代理方法
- - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
- {
- if (actionSheet.tag == )
- {
- switch (buttonIndex)
- {
- case :
- {
- _pickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
- _pickerController.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeImage];
- [self presentViewController:_pickerController animated:YES completion:nil];
- }
- break;
- case :
- {
- _pickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
- _pickerController.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeImage];
- [self presentViewController:_pickerController animated:YES completion:nil];
- }
- break;
- default:
- break;
- }
- }
- if (actionSheet.tag == )
- {
- switch (buttonIndex)
- {
- case :
- {
- _pickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
- _pickerController.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeImage];
- [self presentViewController:_pickerController animated:YES completion:nil];
- }
- break;
- case :
- {
- _pickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
- // _pickerController.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeImage];
- [self presentViewController:_pickerController animated:YES completion:nil];
- }
- break;
- case :
- {
- _pickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
- // pickController.videoQuality = UIImagePickerControllerQualityTypeLow;//可以选择图片质量
- _pickerController.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie];
- [self presentViewController:_pickerController animated:YES completion:nil];
- }
- default:
- break;
- }
- }
- if (actionSheet.tag == )
- {
- if (buttonIndex == )
- {
- _pickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
- // _pickerController.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeImage];
- [self presentViewController:_pickerController animated:YES completion:nil];
- }
- }
- }
- - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
- {
- NSLog(@"========%@",info);//返回的值都在info里面
- if ([[info objectForKey:UIImagePickerControllerMediaType] isEqualToString:(NSString *)kUTTypeMovie])
- {
- _imageView.image = [UIImage imageWithData:[NSData dataWithContentsOfFile:(NSString *)[[info objectForKey:UIImagePickerControllerMediaURL] path]]];
- }
- else
- {
- _imageView.image = [info objectForKey:@"UIImagePickerControllerEditedImage"];
- }
- [self dismissViewControllerAnimated:YES completion:nil];
- }
- //如果这是一个modalViewController,需要dismiss 它发了个cancel消息,必须关闭它
- - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
- {
- [self dismissViewControllerAnimated:YES completion:nil];
- }
- /**
- * {
- UIImagePickerControllerMediaType = "public.image";
- UIImagePickerControllerOriginalImage = "<UIImage: 0x7fe3a3dc2a20> size {1500, 1001} orientation 0 scale 1.000000";
- UIImagePickerControllerReferenceURL = "assets-library://asset/asset.JPG?id=B6C0A21C-07C3-493D-8B44-3BA4C9981C25&ext=JPG";
- }
- */
- /**
- * {
- UIImagePickerControllerCropRect = "NSRect: {{0, 0}, {1500, 1003}}";
- UIImagePickerControllerEditedImage = "<UIImage: 0x7fec5c8145b0> size {638, 426} orientation 0 scale 1.000000";
- UIImagePickerControllerMediaType = "public.image";
- UIImagePickerControllerOriginalImage = "<UIImage: 0x7fec5c80d4c0> size {1500, 1001} orientation 0 scale 1.000000";
- UIImagePickerControllerReferenceURL = "assets-library://asset/asset.JPG?id=B6C0A21C-07C3-493D-8B44-3BA4C9981C25&ext=JPG";
- }
- */
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