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>
View Code

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