ios – 多个UIAlertView问题

-(IBACtion)publicaPeticion
 {
    if([txtPeticion hasText] )
    {

        UIAlertView *alerta = [[UIAlertView alloc]
                              initWithtitle:@"Confirmación de Compra" 
                              message:@"Deseas comprar la petición por $12.00" 
                              delegate:self 
                              cancelButtontitle:@"Cancelar"
                              otherButtontitles:@"Aceptar",nil];
        [alerta show];  
    }


}

问题出在publicaPeticion和cargaImagen之间

-(IBACtion)cargaImagen
{

    UIAlertView *alert = [[UIAlertView alloc]
                          initWithtitle:@"Subir una imagen" 
                          message:@"¿De donde deseas subir una imagen?" 
                          delegate:self 
                          cancelButtontitle:@"Cancelar" 
                          otherButtontitles:@"Desde el equipo",@"Tomar con camara",nil];
    [alert show];


}

以及从照片流或相机获取图像来源的方法

-(void)alertView:(UIAlertView *)alertView clickedButtonATindex:(NSInteger)buttonIndex
{
    if(buttonIndex == 1)
    {
        picker = [[UIImagePickerController alloc] init];
        picker.delegate = self;
        picker.sourCEType = UIImagePickerControllersourceTypePhotoLibrary;
        [self presentModalViewController:picker animated:YES];

    }
    if(buttonIndex ==2)
    {
        picker = [[UIImagePickerController alloc] init];
        picker.delegate = self;
        picker.sourCEType = UIImagePickerControllersourceTypeCamera;
        [self presentModalViewController:picker animated:YES];
    }
}

问题是,当我按下“Aceptar”按钮(OK)时,它会将我从照片库中上传图片…

也许是一个有点傻的问题,但我怎么能区分它？