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App Inventor 2 文本.合并字符串的引号问题 - App Inventor 2 中文网 - 清...
转：合并字符串有引号吗？比如‘A’和‘B’，是‘AB’吗
答复：
[hide]引号也是文本，应该中间还有两个引号。你可以验证一下。
经测试，的确如此：
问：那有办法去掉吗？
答：
问：就是我只想去掉开头的引...
蓝牙接收的数据怎么一行一行更新显示和，类似图2这样的 - App应用开发 - 清...
在做BLE蓝牙显示app。蓝牙端一个数据一个数据的发送，但是显示的时候后一个会覆盖上一个 无法将接收的数据全部罗列出来，而且显示的还有问题，有时候显示一个，有时候显示3个数据。求解！！使用列表显示框组件，详见文...
How to deal with INSTALL_PARSE_FAILED_INCONSISTENT_CERTIFICATES without uninstall?
...
It means the new copy of your application (on your development machine) was signed with a different signing key than the old copy of your application (installed on the device/emulator). For example, if this is a device, you might have put the old copy on ...
How to get GET (query string) variables in Express.js on Node.js?
... to "How to get the query string of an URL?" — the URL in question just happens to be in an object named request and has nothing to do with Express. See @whitequark's answer below (use request.query)
– lunohodov
Mar 25 '16 at 11:55
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Android Webview - Completely Clear the Cache
...n deletedFiles;
}
/*
* Delete the files older than numDays days from the application cache
* 0 means all files.
*/
public static void clearCache(final Context context, final int numDays) {
Log.i(TAG, String.format("Starting cache prune, deleting files older than %d days", numDays));
int ...
iTunes Connect: How to choose a good SKU?
...'m reading the iTunes Connect Developer Guide as I'm trying to add a new application to iTunes Connect.
7 Answers
...
How to add local .jar file dependency to build.gradle file?
...hat .jar from a local directory,
Add next to your module gradle (Not the app gradle file):
repositories {
flatDir {
dirs 'libs'
}
}
dependencies {
implementation name: 'gson-2.2.4'
}
However, being a standard .jar in an actual maven repository, why don't you try this?
reposit...
条码扫描器组件扫描时报错：Your device does not have a scanning applica...
转：App里面能了一个扫描功能，但在使用扫描功能时，提示，须要扫描程序，还须要安装什么吗？扫描二维码，使用的是App自带的扫描摸块。
解决：
[hide]
不使用外部扫描器，这个属性设置为假（去掉勾选）即可
原理...
How to find NSDocumentDirectory in Swift?
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Apparently, the compiler thinks NSSearchPathDirectory:0 is an array, and of course it expects the type NSSearchPathDirectory instead. Certainly not a helpful error message.
But as to the reasons:
First, you are confusing th...
AngularJS - Multiple ng-view in single template
I am building a dynamic web app by using AngularJS. Is it possible to have multiple ng-view on a single template?
6 Answe...