takePic and Videos

//
// ViewController.m
// UIImagePickerController

// Created by Kenshin Cui on 14/04/05.
// Copyright (c) 2014年 cmjstudio. All rights reserved.
//AVFoundation.framework
//MediaPlayer.framework
//MobileCoreSevices.framework

#import "ViewController.h"
#import <MobileCoreServices/MobileCoreServices.h>
#import <AVFoundation/AVFoundation.h>

@interface ViewController ()<UIImagePickerControllerDelegate,UINavigationControllerDelegate>
@property (assign,nonatomic) int isVideo;//是否录制视频，如果为1表示录制视频，0代表拍照
@property (strong,nonatomic) UIImagePickerController *imagePicker;
@property (weak, nonatomic) IBOutlet UIImageView *photo;//照片展示视图
@property (strong ,nonatomic) AVPlayer *player;//播放器，用于录制完视频后播放视频

@end

@implementation ViewController

#pragma mark - 控制器视图事件
- (void)viewDidLoad {
[super viewDidLoad];
//通过这里设置时拍照还是录制视频
_isVideo=YES;
}

#pragma mark - UI事件
//点击拍照按钮
- (IBAction)takeClick:(UIButton *)sender {
[self presentViewController:self.imagePicker animated:YES completion:nil];
}

#pragma mark - UIImagePickerController代理方法
//完成
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
NSString *mediaType=[info objectForKey:UIImagePickerControllerMediaType];
if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {//如果时拍照
UIImage *image;
//如果允许编辑则获得编辑后的照片，否则获取原始照片
if (self.imagePicker.allowsEditing) {
image=[info objectForKey:UIImagePickerControllerEditedImage];//获取编辑后的照片
}else{
image=[info objectForKey:UIImagePickerControllerOriginalImage];//获取原始照片
}
[self.photo setImage:image];//显示照片
UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);//保存到相簿
}else if([mediaType isEqualToString:(NSString *)kUTTypeMovie]){//如果是录制视频
NSLog(@"video...");
NSURL *url=[info objectForKey:UIImagePickerControllerMediaURL];//视频路径
NSString *urlStr=[url path];
if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(urlStr)) {
//保存视频到相簿，注意也可以使用ALAssetsLibrary来保存
UISaveVideoAtPathToSavedPhotosAlbum(urlStr, self, @selector(video:didFinishSavingWithError:contextInfo:), nil);//保存视频到相簿
}

}

[self dismissViewControllerAnimated:YES completion:nil];
}
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
NSLog(@"取消");
}

#pragma mark - 私有方法
-(UIImagePickerController *)imagePicker{
if (!_imagePicker) {
_imagePicker=[[UIImagePickerController alloc]init];
_imagePicker.sourceType=UIImagePickerControllerSourceTypeCamera;//设置image picker的来源，这里设置为摄像头
_imagePicker.cameraDevice=UIImagePickerControllerCameraDeviceRear;//设置使用哪个摄像头，这里设置为后置摄像头
if (self.isVideo) {
_imagePicker.mediaTypes=@[(NSString *)kUTTypeMovie];
_imagePicker.videoQuality=UIImagePickerControllerQualityTypeIFrame1280x720;
_imagePicker.cameraCaptureMode=UIImagePickerControllerCameraCaptureModeVideo;//设置摄像头模式（拍照，录制视频）

}else{
_imagePicker.cameraCaptureMode=UIImagePickerControllerCameraCaptureModePhoto;
}
_imagePicker.allowsEditing=YES;//允许编辑
_imagePicker.delegate=self;//设置代理，检测操作
}
return _imagePicker;
}

//视频保存后的回调
- (void)video:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo{
if (error) {
NSLog(@"保存视频过程中发生错误，错误信息:%@",error.localizedDescription);
}else{
NSLog(@"视频保存成功.");
//录制完之后自动播放
NSURL *url=[NSURL fileURLWithPath:videoPath];
_player=[AVPlayer playerWithURL:url];
AVPlayerLayer *playerLayer=[AVPlayerLayer playerLayerWithPlayer:_player];
playerLayer.frame=self.photo.frame;
[self.photo.layer addSublayer:playerLayer];
[_player play];

}
}
@end