如何自定義左上角的傳回按鈕

效果圖：

代碼如下：

//左上方傳回圖示

    UIImage * backImage = [[UIImage imageNamed:@"btn_nav_back.png"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

    //添加左邊按鈕

    UIBarButtonItem * backButtonItem = [[UIBarButtonItem alloc] initWithImage:backImage style:UIBarButtonItemStylePlain target:self action:@selector(didClickBackAction44:)];

    self.navigationItem.leftBarButtonItem = backButtonItem;

    self.view.backgroundColor = [UIColor whiteColor];

//導航欄的傳回按鈕

- (void)didClickBackAction44:(UIBarButtonItem *)bar

{

    [self.navigationController popViewControllerAnimated:YES];

}