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拍照时报错求助! - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!
拍照时如果长时间在拍照界面,拍完照后会报错,然后程序死机谷歌没有任何相关报错信息资料。AppInventor源码整个没有这个报错信息。
大概率是你程序中自己报的错误信息。你先看下代码块,相关地方的代码截图看看。App Inve...
ble 蓝牙透传代码怎么写? - 创客硬件开发 - 清泛IT社区,为创新赋能!
...块这个地址可以吗?
上图中是控制服务id:SERVICEF000_UUUID = UUID.fromString("0000f000-0000-1000-8000-00805f9b34fb");以及2个控制端口的特征id。
可以做到透传,不过要换透传 id,这个 id 是 io 控制口
晚一些我给你一下 透传 id。
...
创建并发送BLE蓝牙广播 - 创客硬件开发 - 清泛IT社区,为创新赋能!
...一些问题。Evan Patton指出,Android的BLE子系统需要使用16位UUID,并提供了一个测试版的BLE扩展,解决了广播发送失败的问题。
以下是帖子中的详细步骤和细节:
BLE扩展问题:用户在使用BLE扩展时遇到广播无法发送的问题。UUID...
Add a reference column migration in Rails 4
...cument if someone has the same problem...
In my situation I've been using :uuid fields, and the above answers does not work to my case, because rails 5 are creating a column using :bigint instead :uuid:
add_reference :uploads, :user, index: true, type: :uuid
Reference: Active Record Postgresql UUID...
Getting MAC Address
...
Python 2.5 includes an uuid implementation which (in at least one version) needs the mac address. You can import the mac finding function into your own code easily:
from uuid import getnode as get_mac
mac = get_mac()
The return value is the mac...
Getting an element from a Set
... match this "copied" instance with the original one, I decided to use Java UUIDs.
So I created an abstract class UniqueItem, which automatically gives a random unique id to each instance of its subclasses.
This UUID is shared between the client and the server instance, so this way it could be easy...
MySQL 启动报错 Table \'mysql.plugin\' doesn\'t exist - 数据库(内核) -...
MySQL 启动报错 Table 'mysql.plugin' doesn't exist 启动报错: opt szy bin mysqld: Table 'mysql.plugin ' doesn 't exist141211 15:06:12 [ERROR] Can 't open t...启动报错:
/opt/szy/bin/mysqld: Table \'mysql.plugin\' doesn\'t exist
141211 15:06:12 [ERROR] Can\'t open the mysql.plug...
解决python3报错:TypeError: a bytes-like object is required, not \'str...
解决python3报错:TypeError: a bytes-like object is required, not 'str'问题原因:python3和Python2在套接字返回值解码上有区别,也就是说报错的这段代码在python2上可以正常使用。解决思路:python bytes和str两种类型可以通过函数encode()和decode() ...
【解决】php报错:Can not connect to MySQL server - 更多技术 - 清泛网 -...
【解决】php报错:Can not connect to MySQL server遇到这种情况,如果是mysql安装问题,可以通过命名测试一下:mysql -uroot -p如果用户名密码验证能够正常连接,但php报错的话,那大概率是因为你访问的库没有被创建,创建一下就OK了。...
【ClientSocketAI2Ext】拓展报错信息如何自定义展示? - App Inventor 2 拓...
目前该拓展报错(比如IP或端口不通)后,直接App崩溃退出,如下:
如何自定义并友好地展示报错信息呢?
一般地,使用屏幕1.出现错误 这个事件:
但是经过测试,此方式无效,系统还是按照自己的错误提示显示,并...
