大约有 10,000 项符合查询结果(耗时:0.0206秒) [XML]

https://bbs.tsingfun.com/thread-1824-1-1.html 

MQTT 打包后,运行退到后台返回,mqtt连接掉线问题 - App应用开发 - 清泛...

...机上,刚开始打开软件的时候,连接成功,屏幕退到后台反回app界面的时候,显示MQTT未连接(联网失败) 请帮忙解决一下这个是需要进行状态管理,当状态变成连接失败时,需要进行一次重新连接:将连接逻辑定义一个过程...
https://bbs.tsingfun.com/thread-2015-1-1.html 

如何能让这种错误app中不显示? - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!

如何能让这种错误app中不显示?2种思路: 1、通过全局异常捕获,便于个性化、可恢复的报错提醒: 不过,不是所有的异常都能捕获,自己试试看。具体参考文档:https://www.fun123.cn/reference/ ... creen.ErrorOccurred 2、只能直接...
https://bbs.tsingfun.com/thread-2202-1-1.html 

为啥“蓝牙客户端”组件连接设备时就没反应了? - 创客硬件开发 - 清泛IT...

...户使用“蓝牙客户端”连接已配对设备时,发现点不动,确认代码无误的情况下,连接的步骤卡住了,有时报错:“Error 507: Unable to connect. Is the device turned on?” 这时可以考虑是否时硬件没有开机,或者硬件蓝牙版本是否是2....
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如何文本输框中自动加空格 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!

如何文本输框中自动加空格?已回复。 Q:输的十六进制,每2个字符对应一个十六进制数,想显示的时候自动加上空格 A:这个只能加逻辑,遍历十六进制,每2位 然后拼接一个空格。
https://bbs.tsingfun.com/thread-2231-1-1.html 

解决:文本输键盘弹起输框看不见时,键盘退格键删除不了内容? - A...

是因为区域隐藏了导致的。 screen1 的属性 “允许滚动”  勾选上,完美解决: 允许滚动后,区域就是自动的,输框永远视线内,键盘响应全部正常。
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How do I make an html link look like a button?

I'm using ASP.NET, some of my buttons just do redirects. I'd rather they were ordinary links, but I don't want my users to notice much difference in the appearance. I considered images wrapped by anchors, i.e. tags, but I don't want to have to fire up an image editor every time I change the text ...
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Best way to disable button in Twitter's Bootstrap [duplicate]

I am confused when it comes to disabling a <button> , <input> or an <a> element with classes: .btn or .btn-primary , with JavaScript/jQuery. ...
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change text of button and disable button in iOS

How do you change the text of the button and disable a button in iOS? 8 Answers 8 ...
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Play sound on button click android

How do I get a button to play a sound from raw when click? I just created a button with id button1 , but whatever code I write, all is wrong. ...
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Remove border from buttons

I tried to create buttons and insert my own images instead of the standard button images. However, the gray border from the standard buttons still remains, showing on the outside of my black button images. ...