大约有 40,000 项符合查询结果(耗时:0.0230秒) [XML]

https://bbs.tsingfun.com/thread-1606-1-1.html 

找到代做,基于App Invento做一个有离线功能的保修、巡检app - App应用开发...

大致看了一下需求,功能还是挺复杂的。业务数据应该是来自你们自己的服务器,需要进行相关的数据通信。 总之不是一个小功能,而是一个小项目级别的了。建议还是自己开发,代做可能不会便宜的。{:8_352:}
https://stackoverflow.com/ques... 

Android ViewPager - Show preview of page on left and right

...dView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" <-- this! app:cardCornerRadius="8dp" app:cardUseCompatPadding="true"> <andro...
https://stackoverflow.com/ques... 

Why do people say that Ruby is slow? [closed]

... Ruby to be slow but then again, I'm just using it to make simple CRUD apps and company blogs. What sort of projects would I need to be doing before I find Ruby becoming slow? Or is this slowness just something that affects all programming languages? Ruby probably wouldn't serve you ...
https://stackoverflow.com/ques... 

ImageView - have height match width?

...id:layout_width="wrap_content" android:layout_height="0dp" app:layout_constraintDimensionRatio="1:1" /> </android.support.constraint.ConstraintLayout> See here Deprecated: According to this post by Android Developers, all you need to do now is to wrap whatever you want ...
https://stackoverflow.com/ques... 

I can’t find the Android keytool

I am trying to follow the Android mapping tutorial and got to this part where I had to get an API key . 10 Answers ...
https://stackoverflow.com/ques... 

What's the difference between using CGFloat and float?

...it will jump to the CGBase.h header where the typedef is defined. The same approach is used for NSInteger and NSUInteger as well. These types were introduced to make it easier to write code that works on both 32-bit and 64-bit without modification. However, if all you need is float precision within...
https://stackoverflow.com/ques... 

Draw text in OpenGL ES

... TextView over your SurfaceView. This is slow and bad, but the most direct approach. Render common strings to textures, and simply draw those textures. This is by far the simplest and fastest, but the least flexible. Roll-your-own text rendering code based on a sprite. Probably second best choice if...
https://stackoverflow.com/ques... 

How to write log to file

...r me: f, err := os.OpenFile("testlogfile", os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666) if err != nil { log.Fatalf("error opening file: %v", err) } defer f.Close() log.SetOutput(f) log.Println("This is a test log entry") Based on the Go docs, os.Open() can't work for log.SetOutput, because i...
https://stackoverflow.com/ques... 

How do I avoid capturing self in blocks when implementing an API?

I have a working app and I'm working on converting it to ARC in Xcode 4.2. One of the pre-check warnings involves capturing self strongly in a block leading to a retain cycle. I've made a simple code sample to illustrate the issue. I believe I understand what this means but I'm not sure the "corre...
https://www.tsingfun.com/it/ai2/ai2_10.html 

App Inventor 2 手机AI伴侣进行测试时,为啥进度条卡在10%就一直不动? - A...

App Inventor 2 手机AI伴侣进行测试时,为啥进度条卡在10%就一直不动?ai2_10手机AI伴侣测试,几分钟了进度条一直卡在10%,如图:原因很简单:手机和电脑没有在同一局域网内导致的,App Inventor 2 测试原理是电脑端在局域网内启动...