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AppInventor2 vs Android Studio - App应用开发 - 清泛IT社区，为创新赋能！
有同学问：
如果用 AppInventor2 设计好了 回头出现问题用这个软件解决不了 是不是能用 Android Studio来重新编译呢？
不能，不同的源码体系。但是android studio工具可以调查部分app的通用问题，最终的apk他们是一致的，只是源码形...
无法打包成apk - App应用开发 - 清泛IT社区，为创新赋能！
...报错信息截图看一下
这个是图片
我也有时会出现同样的问题这个问题已经解决了，通过将部分功能移出，删减单页面代码数量，已经能够完成编译，并运行。核心原因：源码中逻辑问题，代码块超限导致yail保存不了。中文网...
BLE connection error “Connection status was set to OS code 133” - 创...
https://stackoverflow.com/questi ... droid-bluetooth-ble
问题原来是设备试图发送大于 MTU 大小的数据包，Android 默认为 23，至少在我测试的特定设备上是这样。
请求更大的 MTU 大小确实解决了问题。
但是，如果错误代码可以明确指出...
Javascript : Send JSON Object with Ajax?
...
With jQuery:
$.post("test.php", { json_string:JSON.stringify({name:"John", time:"2pm"}) });
Without jQuery:
var xmlhttp = new XMLHttpRequest(); // new HttpRequest instance
xmlhttp.open("POST", "/json-handler");
xmlhttp.setRequestHeader("Content-...
ie8 var w= window.open() - “Message: Invalid argument.”
...n you look at the official documentation page, you see that Microsoft only allows the following arguments, If using that argument at all:
_blank
_media
_parent
_search
_self
_top
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pass post data with window.location.href
...n attribute of the form to the URL and the method attribute to POST, then call the submit method on the form tag.
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Bad value X-UA-Compatible for attribute http-equiv on element meta
...tion that states: "The following proposed extensions do not yet conform to all the registration requirements in the HTML spec and are therefore not yet allowed in valid documents." So the validator is correct to reject this value.
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Showing all errors and warnings [duplicate]
...he configuration file.
You can turn it on in the script:
error_reporting(E_ALL);
ini_set('display_errors', '1');
You should see the same messages in the PHP error log.
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Increment value in mysql update query
...lever for someone who knows what PDO is, but for me who's just diving into PHP/MySQL, it doesn't really shine a lot of light into the matter. Does PDO make that code smaller or more elegant? If so, please edit the answer or post one of your own where you show how it's better with PDO. Thanks.
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How to create cron job using PHP?
...syntax of scheduling a new job may seem daunting at first glance, it's actually relatively simple to understand once you break it down. A cron job will always have five columns each of which represent a chronological 'operator' followed by the full path and command to execute:
* * * * * home/path/t...