iPhone 5 CAEAGLLayer返回错误的边界

Question

由于某些原因，我的OpenGL应用程序在ios6 4英寸视网膜模拟器中运行时，获取了错误的CAEAGLLayer界限信息。

CAEAGLLayer边界打印为

layer bounds are: (0.000000,0.000000), (320.000000,480.000000)

从下面的代码：

- (id)initWithCoder:(NSCoder*)coder {


    if ((self = [super initWithCoder:coder])) {
        // Get the layer
        CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer;

        eaglLayer.opaque = YES;
        eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys:
                                        [NSNumber numberWithBool:NO], kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGBA8, kEAGLDrawablePropertyColorFormat, nil];

        printf("layer bounds are: (%f,%f), (%f,%f)\n", eaglLayer.bounds.origin.x, eaglLayer.bounds.origin.y, eaglLayer.bounds.size.width, eaglLayer.bounds.size.height );

        context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES1];

        if (!context || ![EAGLContext setCurrentContext:context]) {
            [self release];
            return nil;
        }

        animationInterval = 1.0 / 60.0;
    }
    return self;
}

然后，窗口内容被上移，0,0不再位于正确的位置。

有人知道为什么CAEAGLLayer被设置为不正确的宽/高吗？

谢谢

Answer 1

啊，其他人也有这个问题。我之前找的时候找不到。

这就是解决方案：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    self.window.frame = CGRectMake(0, 0, [[UIScreen mainScreen]bounds].size.width, [[UIScreen mainScreen]bounds].size.height);

}

从这里：How to make a uitableview in interface builder compatible with a 4 inch iPhone