iOS:如何将图像动态添加到父视图? [英] iOS: How to dynamically add image to a parent view?

问题描述

我在屏幕上有一个主图像，并在其顶部放置了一个覆盖"UIView，背景颜色设置为清除颜色.我想在叠加视图中动态放置其他图像，如下所示:

I've got a main image on the screen, and have an "overlay" UIView placed on top of it with the background color set to Clear Color. I want to dynamically place other images inside the overlay view as follows:

UIImage* m_icon = [[UIImage alloc]initWithContentsOfFile:@"icon.png"]; 
UIImageView *imageView = [[UIImageView alloc] initWithImage:m_icon];
[m_OverlayView addSubview:imageView];

但是图标图像没有显示.我错过了什么?

But the icon image isn't showing up. What am I missing?

推荐答案

你可以试试:

NSString *icon_path = [[NSBundle mainBundle] pathForResource:@"icon" ofType:@"png"];
UIImage* m_icon = [[UIImage alloc]initWithContentsOfFile:icon_path]; 
UIImageView *imageView = [[UIImageView alloc] initWithImage:m_icon];
[m_OverlayView addSubview:imageView];

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