TwitterKit在iPhone5S（iOS8.4）上共享失败，但精细工作模拟器iPhone 5S（8.4）

Question

我试图在我的应用程序上共享一些字符串和图像。在iPhone 6（9.3）和模拟器iPhone 5S（8.4,9.3）上分享成功。

但我在iPhone 5S（iOS 8.4）上分享失败

Twitter account on Settings

我的代码和崩溃。

• 代码：

  let composer = TWTRComposer()  
  let postMessage = "Twitter sharing test"  
  let viewController = UIApplication.sharedApplication().keyWindow?.rootViewController!    
  
  
  composer.setText(postMessage)  
  composer.setImage(UIImage(named: "Twitter_Icon"))  
  
  composer.showFromViewController(viewController!) { result in  
      if (result == TWTRComposerResult.Cancelled) {  
  
      }    
      else {    
      }  
  }    
  

• 崩溃：

  2016-07-11 06:49:40.923 airdropTest[1600:294752] [Fabric] Unable to locate application icon   
  2016-07-11 06:49:40.971 airdropTest[1600:294752] [Crashlytics] Version 3.7.2 (112)    
  2016-07-11 06:50:05.645 airdropTest[1600:294752] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Application tried to present a nil modal view controller on target .' * First throw call stack: (0x18554c22c 0x1971c80e4 0x18a2ea898 0x18a2ec734 0x18a0b5f40 0x1001c8af4 0x1001014a8 0x100101574 0x18a6ae7f4 0x18a2ceab0 0x18a2d0f2c 0x18a0eadb8 0x18a00055c 0x18a0000c4 0x189ffffcc 0x18990962c 0x100b2cf94 0x100b31c28 0x185503544 0x1855015ec 0x18542cf74 0x18ee8f6fc 0x18a02ed94 0x100107a08 0x197872a08)     
  libc++abi.dylib: terminating with uncaught exception of type NSException (lldb)