iOS7新特性适配

解决方法1：

导航栏设置为不透明

self.navigationController.navigationBar.translucent = NO;

页面会向下压缩如同iOS6向下压缩self.view的高一样

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解决方法2：

设置不滚动

if ([[[UIDevice currentDevice]systemVersion]floatValue]>=7.0) {
　　self.automaticallyAdjustsScrollViewInsets = NO;
}

页面不会向下压缩

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ios7适配方案连接如下：

http://blog.csdn.net/chengwuli125/article/details/12613897

http://blog.csdn.net/chengwuli125/article/details/12617657?utm_source=tuicool