故事的发生起于,由于老板强烈要求app在iPhone6和5有一样的工具栏,然后前端妹子用@media为iPhone6和Plus做了样式适配。然后问题来了,竟然奇葩的发现@media样式只对iPhone4和5起了作用,然后在6和6S的样式效果和5是一样的,奇了怪了!
然后我去查找原因,无意中去获取设备屏幕宽高时发现了这神奇的现象:
CGRect screenBounds = [[UIScreen mainScreen] bounds]; NSString *str = NSStringFromCGRect(screenBounds); NSLog(@"%@", str);
/*
iPhone4S打印结果: {{0, 0}, {320, 480}}
iPhone5和5S、还有6、6Plus、6S、6S Plus打印结果都是一样的,
为:{{0, 0}, {320, 568}}
*/
按正常逻辑来说,6和6S的打印结果应该为:{{0, 0}, {375, 667}}, 然后6Plus和6S Plus的打印结果为:{{0, 0}, {414, 736}}
顿时感觉到这个应该是导致@medie样式对6和Plus不起作用的原因!
然后另外还发现了,app的启动图片,也是所谓的”闪屏”(splash),6和6S、Plus都共用了iPhone5的启动图片: Default-568h@2x~iphone.png。就算你在app的资源文件夹splash那里增加了图片:Default-667h@2x~iphone.png和Default-736h@3x~iphone.png, 可是打包到6和Plus上时,加载的启动图片还是568h, 这是怎么的一回事呢?
然后开始的各种查,最后问题解决了,先把解决办法说一下,三个条件:
1、在ios app项目的工程文件***.info里加上针对启动图片的配置,配置内容:
<key>UILaunchImages</key>
<array>
<dict>
<key>UILaunchImageMinimumOSVersion</key>
<string>8.0</string>
<key>UILaunchImageName</key>
<string>Default</string>
<key>UILaunchImageOrientation</key>
<string>Portrait</string>
<key>UILaunchImageSize</key>
<string>{320, 480}</string>
</dict>
<dict>
<key>UILaunchImageMinimumOSVersion</key>
<string>8.0</string>
<key>UILaunchImageName</key>
<string>Default</string>
<key>UILaunchImageOrientation</key>
<string>Landscape</string>
<key>UILaunchImageSize</key>
<string>{320, 480}</string>
</dict>
<dict>
<key>UILaunchImageMinimumOSVersion</key>
<string>8.0</string>
<key>UILaunchImageName</key>
<string>Default-568h</string>
<key>UILaunchImageOrientation</key>
<string>Portrait</string>
<key>UILaunchImageSize</key>
<string>{320, 568}</string>
</dict>
<dict>
<key>UILaunchImageMinimumOSVersion</key>
<string>8.0</string>
<key>UILaunchImageName</key>
<string>Default-568h</string>
<key>UILaunchImageOrientation</key>
<string>Landscape</string>
<key>UILaunchImageSize</key>
<string>{320, 568}</string>
</dict>
<dict>
<key>UILaunchImageMinimumOSVersion</key>
<string>8.0</string>
<key>UILaunchImageName</key>
<string>Default-667h</string>
<key>UILaunchImageOrientation</key>
<string>Portrait</string>
<key>UILaunchImageSize</key>
<string>{375, 667}</string>
</dict>
<dict>
<key>UILaunchImageMinimumOSVersion</key>
<string>8.0</string>
<key>UILaunchImageName</key>
<string>Default-667h</string>
<key>UILaunchImageOrientation</key>
<string>Landscape</string>
<key>UILaunchImageSize</key>
<string>{375, 667}</string>
</dict>
<dict>
<key>UILaunchImageMinimumOSVersion</key>
<string>8.0</string>
<key>UILaunchImageName</key>
<string>Default-736h</string>
<key>UILaunchImageOrientation</key>
<string>Portrait</string>
<key>UILaunchImageSize</key>
<string>{414, 736}</string>
</dict>
<dict>
<key>UILaunchImageMinimumOSVersion</key>
<string>8.0</string>
<key>UILaunchImageName</key>
<string>Default-Landscape-736h</string>
<key>UILaunchImageOrientation</key>
<string>Landscape</string>
<key>UILaunchImageSize</key>
<string>{414, 736}</string>
</dict>
<dict>
<key>UILaunchImageMinimumOSVersion</key>
<string>8.0</string>
<key>UILaunchImageName</key>
<string>Default-Portrait</string>
<key>UILaunchImageOrientation</key>
<string>Portrait</string>
<key>UILaunchImageSize</key>
<string>{768, 1024}</string>
</dict>
<dict>
<key>UILaunchImageMinimumOSVersion</key>
<string>8.0</string>
<key>UILaunchImageName</key>
<string>Default-Landscape</string>
<key>UILaunchImageOrientation</key>
<string>Landscape</string>
<key>UILaunchImageSize</key>
<string>{768, 1024}</string>
</dict>
</array>