標籤：
使用cordova開發ios項目的時候，在上傳圖片碰到一個問題。使用html的<input type="file"/>標籤來選擇照片或者拍照片，引起了布局報錯，然後圖片上傳過程中很容易崩潰閃退。
html頁面代碼：
<html><head></head><body> <input type="file" /> </body></html>
然後在真機測試，點擊選擇檔案，控制台出現布局報錯日誌：
Unable to simultaneously satisfy constraints. Probably at least one of the constraints in the following list is one you don‘t want. Try this: (1) look at each constraint and try to figure out which you don‘t expect; (2) find the code that added the unwanted constraint or constraints and fix it. ( "<NSLayoutConstraint:0x156734e0 UILabel:0x1568b9f0.width == UIView:0x155d9110.width - 32>", "<NSLayoutConstraint:0x1568db80 UIView:0x155d9110.width == UIView:0x155d8fc0.width>", "<NSLayoutConstraint:0x156913b0 H:[UIView:0x155d8fc0(30)]>")Will attempt to recover by breaking constraint <NSLayoutConstraint:0x156734e0 UILabel:0x1568b9f0.width == UIView:0x155d9110.width - 32>Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
然後上傳圖片或者視頻的時候，常會出現崩潰閃退現象。在cordova和phonegap搜了下，沒搜到解決的辦法，不知道哪位兄台又碰到這個問題麼，指點我一下！
完整cordova for ios demo下載：http://download.csdn.net/detail/tandaxia/9455872
原文連結：http://www.cnblogs.com/tandaxia/p/5255394.html
cordova for ios: Unable to simultaneously satisfy constraints.
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
