调用相机，相册实现更换头像

- (void)viewDidLoad{

　　 UIActionSheet *sheet;

    //判断是否支持相机

    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

        sheet = [[UIActionSheet alloc] initWithTitle:@"选择图像" delegate:self cancelButtonTitle:nil destructiveButtonTitle:@"取消" otherButtonTitles:@"拍照",@"从相册中选择", nil];

    }

    else{

        sheet = [[UIActionSheet alloc] initWithTitle:@"选择图像" delegate:self cancelButtonTitle:nil destructiveButtonTitle:@"取消" otherButtonTitles:@"从相册中选择", nil];

    }

    [sheet showInView:view];

}

 

 

-(void) actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex

{

    NSUInteger sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

        switch (buttonIndex) {

            case0:

                return;

            case1:

                sourceType = UIImagePickerControllerSourceTypeCamera;

                break;

            case2:

                sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

                break;

        }

    }

    else{

        if (buttonIndex == 0) {

            return;

        }

        else

        {

            sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;

        }

 

    }

    //跳转到相机或相册页面

    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];

    imagePickerController.delegate = self;

    imagePickerController.allowsEditing = YES; //可编辑

    imagePickerController.sourceType = sourceType;

    

    [EUtility brwView:meBrwView presentModalViewController:imagePickerController animated:YES];

    

    

}

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

    

    

    UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage]; //裁减后的图片

    

   NSString * path = [self saveImage:image]; //saveImage

    

    [picker dismissModalViewControllerAnimated:YES];

    

    

    

    [EUtility brwView:meBrwView evaluateScript:[NSString stringWithFormat:@"uexPhoto.imagePathCallBack('%@');",path]];

}

 

//将图片保存到本地

-(NSString*) saveImage:(UIImage*)image

{

    BOOL success;

    NSFileManager *fileManger = [NSFileManager defaultManager];

    NSError *error;

    

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

    NSString *documentDirectory = [paths objectAtIndex:0];

    NSString *imageFilePath = [documentDirectory stringByAppendingPathComponent:@"selfPhpto.jpg"];

//    NSLog(@"imageFile ---- %@",imageFilePath);

    

    success = [fileManger fileExistsAtPath:imageFilePath];

    if (success) {

        success = [fileManger removeItemAtPath:imageFilePath error:&error];

    }

    

    //写入文件

    [UIImageJPEGRepresentation(image, 1.0f) writeToFile:imageFilePath atomically:YES];

    UIImage *selfPhoto = [UIImage imageWithContentsOfFile:imageFilePath];

 

    return imageFilePath;

}