iOS 界面UI自适应设备方向

最新推荐文章于 2020-08-17 16:32:22 发布

原创最新推荐文章于 2020-08-17 16:32:22 发布 · 580 阅读

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#iOS 自适应方向

本文介绍了一个简单的iOS应用示例，展示了如何通过NSNotification来监听设备的方向变化，并根据不同方向调整UI布局，确保应用在竖屏和横屏下都有良好的显示效果。

一个简单的例子：

1.注册通知：

    //设备方向消息
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(GuomobWallonDeviceOrientationChange) name:
     UIDeviceOrientationDidChangeNotification object:nil];

2.消息响应

-(void)GuomobWallonDeviceOrientationChange
{
    UIDeviceOrientation orientation = [UIDevice currentDevice].orientation;
    
    //if((orientation==UIDeviceOrientationPortrait)||(orientation==UIDeviceOrientationPortraitUpsideDown))
    if(orientation==UIDeviceOrientationPortrait)
    {
        //        NSLog(@"竖屏***************");
        imageview.frame=CGRectMake(0, 0, rect_screen.size.width, rect_screen.size.height);
        btnReqAd.frame=CGRectMake((rect_screen.size.width-300)/2, 40, 300, 60);
        btnReadPoint.frame=CGRectMake((rect_screen.size.width-300)/2, 105, 300, 40);
        btnWritePoint.frame=CGRectMake((rect_screen.size.width-300)/2, 150, 300, 40);
        btncheckPoint.frame=CGRectMake((rect_screen.size.width-300)/2, 195, 300, 40);
        btnupdatePoint.frame=CGRectMake((rect_screen.size.width-300)/2, 240, 300, 40);
    }
    else if((orientation==UIDeviceOrientationLandscapeLeft)||(orientation==UIDeviceOrientationLandscapeRight))
    {
        //        NSLog(@"横屏***************");
        imageview.frame=CGRectMake(0, 0, rect_screen.size.height, rect_screen.size.width);
        btnReqAd.frame=CGRectMake((rect_screen.size.height-300)/2, 40, 300, 60);
        btnReadPoint.frame=CGRectMake((rect_screen.size.height-300)/2,105, 300, 40);
        btnWritePoint.frame=CGRectMake((rect_screen.size.height-300)/2, 150, 300, 40);
        btncheckPoint.frame=CGRectMake((rect_screen.size.height-300)/2, 195, 300, 40);
        btnupdatePoint.frame=CGRectMake((rect_screen.size.height-300)/2, 240, 300, 40);
    }
}