iOS 选择照片、视频、拍照并压缩视频获取压缩保存后路径的方法
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#import "ViewController.h"
#import
#import
#import
@interfaceViewController () <UIImagePickerControllerDelegate,UINavigationControllerDelegate>
@property (nonatomic ,strong)NSString * path;
@end
@implementation ViewController
- (void)viewDidLoad {
[superviewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
// [self openVideoLibrary];
[selfopenPhotoLibrary];
// [self openCamera];
}
#pragma mark ————————— 打开视频库 —————————————
- (void)openVideoLibrary{
//打开控制器
UIImagePickerController *picker = [[UIImagePickerControlleralloc]init];
//设置媒体类型
picker.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;//打开相册库,用户与电脑同步的,不能删除
picker.delegate =self;
picker.allowsEditing =NO;
NSString *requiredMediaType1 = (NSString *)kUTTypeMovie;
NSArray *arrMediaTypes = [NSArrayarrayWithObjects:requiredMediaType1,nil];
[picker setMediaTypes: arrMediaTypes];
//显示控制器
[selfpresentViewController:pickeranimated:YEScompletion:nil];
}
#pragma mark ————————— 打开图片库 —————————————
- (void)openPhotoLibrary {
//打开控制器
UIImagePickerController *picker = [[UIImagePickerControlleralloc]init];
// 设置媒体类型
picker.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;//打开相册,获取资源,视频和图片用户拍摄的照片可以删除,
picker.delegate =self;
//显示控制器
[selfpresentViewController:pickeranimated:YEScompletion:nil];
}
#pragma mark ————————— 打开摄像头拍照 —————————————
- (void)openCamera {
//打开控制器
UIImagePickerController *picker = [[UIImagePickerControlleralloc]init];
// 设置媒体类型
picker.sourceType=UIImagePickerControllerSourceTypeCamera;//设置摄像头类型摄像头
picker.delegate =self;
//显示控制器
[selfpresentViewController:pickeranimated:YEScompletion:nil];
}
#pragma mark UIImagePickerControllerDelegate
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
if([mediaTypeisEqualToString:@"public.movie"]) {
//如果是视频返回的是URL
NSURL * url=info[UIImagePickerControllerMediaURL];
NSLog(@"视频地址 = %@",url);
//使用媒体工具压缩
[selfcompressVideo:url];
}else{
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
NSLog(@"选择的照片 = %@",image);
}
//关闭控制器
[selfdismissViewControllerAnimated:YEScompletion:nil];
}
#pragma mark ————————— 压缩视频 —————————————
- (void)compressVideo:(NSURL*)url {
NSLog(@"压缩");
//使用媒体工具(AVFoundation框架下的)
//Asset 资源可以是图片音频视频
AVAsset *asset=[AVAssetassetWithURL:url];
//设置压缩的格式
AVAssetExportSession *session=[AVAssetExportSessionexportSessionWithAsset:assetpresetName:AVAssetExportPresetMediumQuality];//mediumquality:中等质量
//设置导出路径
NSString *path=[NSTemporaryDirectory()stringByAppendingPathComponent:[selfgetVideoNameBaseCurrentTime]];
//创建文件管理类导出失败,删除已经导出的
NSFileManager *manager=[[NSFileManageralloc]init];
//删除已经存在的
[manager removeItemAtPath:patherror:NULL];
//设置到处路径
session.outputURL=[NSURLfileURLWithPath:path];
//设置输出文件的类型
session.outputFileType=AVFileTypeQuickTimeMovie;
//开辟子线程处理耗时操作
[sessionexportAsynchronouslyWithCompletionHandler:^{
NSLog(@"导出完成!路径:%@",path);
// _path = path;
}];
}
#pragma mark ————————— 以当前时间合成视频名称 —————————————
- (NSString *)getVideoNameBaseCurrentTime {
NSDateFormatter *dateFormatter = [[NSDateFormatteralloc] init];
[dateFormatter setDateFormat:@"yyyyMMddHHmmss"];
return [[dateFormatterstringFromDate:[NSDatedate]] stringByAppendingString:@".mov"];
}
#pragma mark ————————— 删除文件 —————————————
- (BOOL)deleteDir:(NSString*)dirPath {
//如果存在临时文件的配置文件
if([[NSFileManagerdefaultManager] fileExistsAtPath:dirPath]) {
NSError *error=nil;
return [[NSFileManagerdefaultManager] removeItemAtPath:dirPath error:&error];
}
return NO;
}
- (void)didReceiveMemoryWarning {
[superdidReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end