ios本地相册 照像 本地视频

 -(IBAction)btnClick{
    UIActionSheet* actionSheet = [[UIActionSheet alloc]
                                  initWithTitle:nil
                                  delegate:self
                                  cancelButtonTitle:@"取消"
                                  destructiveButtonTitle:nil
                                  otherButtonTitles:@"照相机",@"摄像机",@"本地相册",@"本地视频",nil];
             [actionSheet showInView:self.view];
             [actionSheet release];
 }

 #pragma UIActionSheet Delegate
 - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
 {
     NSLog(@"buttonIndex = [%d]",buttonIndex);
     switch (buttonIndex) {
         case ://照相机
             {
                 UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
                 imagePicker.delegate = self;
                 imagePicker.allowsEditing = YES;
                 imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
                 imagePicker.mediaTypes =  [[NSArray alloc] initWithObjects: (NSString *) kUTTypeImage, nil];
                 [self presentModalViewController:imagePicker animated:YES];
                 [imagePicker release];
             }
             break;
         case ://摄像机
             {
                 UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
                 imagePicker.delegate = self;
                 imagePicker.allowsEditing = YES;
                 imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
                 imagePicker.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];
                 imagePicker.videoQuality = UIImagePickerControllerQualityTypeLow;
                 [self presentModalViewController:imagePicker animated:YES];
                 [imagePicker release];
             }
             break;
         case ://本地相册
             {
                 UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
                 imagePicker.delegate = self;
                 imagePicker.allowsEditing = YES;
                 imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
                 imagePicker.mediaTypes =  [[NSArray alloc] initWithObjects: (NSString *) kUTTypeImage, nil];
                 [self presentModalViewController:imagePicker animated:YES];
                 [imagePicker release];
             }
             break;
         case ://本地视频
             {
                 UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
                 imagePicker.delegate = self;
                 imagePicker.allowsEditing = YES;
                 imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
                 imagePicker.mediaTypes =  [[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];
                 [self presentModalViewController:imagePicker animated:YES];
                 [imagePicker release];
             }
             break;
         default:
             break;
     }
 }

 //选取的文件便保存在了filedata中。就可以随时过来调用了
 #pragma UIImagePickerController Delegate
 - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
 {
     if ([[info objectForKey:UIImagePickerControllerMediaType] isEqualToString:(NSString*)kUTTypeImage]) {
         UIImage  *img = [info objectForKey:UIImagePickerControllerEditedImage];
         self.fileData = UIImageJPEGRepresentation(img, 1.0);
     } else if ([[info objectForKey:UIImagePickerControllerMediaType] isEqualToString:(NSString*)kUTTypeMovie]) {
         NSString *videoPath = [[info objectForKey:UIImagePickerControllerMediaURL] path];
         self.fileData = [NSData dataWithContentsOfFile:videoPath];
     }
     [picker dismissModalViewControllerAnimated:YES];
 }

 - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
 {
     [picker dismissModalViewControllerAnimated:YES];
 }