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How to add a custom button state
...coding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res/com.mydomain.mypackage">
<item
app:state_baked="true"
app:state_fried="false"
android:drawable="@drawable/item_baked" />
<item
app...
Android Layout with ListView and Buttons
...="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent">
<Button android:layout_width="fill_parent"
android:layout_height="wrap_content" android:id="@+id/testbutton"
...
Visual Studio 2013 Update 4【VS2013 SP4 旗舰版下载地址】 - 更多技术 - ...
...al Studio 2013 Update 4【VS2013 SP4 旗舰版下载地址】vs2013没有64位版本，但是提供64位编译器，可以编译64位程序。Visual Studio Ultimate 2013 with Update 4 (x86) - DVD (Chinese...vs2013没有64位版本，但是提供64位编译器，可以编译64位程序。
Visual S...
怎么在订阅发布主体内以16位数据发送 modbus 报文 - App Inventor 2 拓展 -...
怎么在MQTT 中 在订阅中发送16位数据参考代码如下：
App Inventor 2 发表于 2024-07-12 18:22
参考代码如下：
你好，按照你给的例子，修改了以后点击发送出现错误，请给解答一下
15898807301 发表于 2024-07-13 18:13
你好，按照...
Modbus硬件控制02——modbus继电器 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...12V或24V电压配合使用。本模块支持所有常见波特率、停止位和校验位的组合，并可任意设置MODBUS地址。这些配置均通过485通信口进行设置，且可通过产品上的按键进行重置为默认设置，即为9600波特率，8个数据位，偶校验，1个停...
Problems with pip install numpy - RuntimeError: Broken toolchain: cannot link a simple C program
...
For Docker (Alpine) and Python 3.x this worked for me:
RUN apk update
RUN apk add make automake gcc g++ subversion python3-dev
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no gravity for scrollview. how to make content inside scrollview as center
...="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ScrollView
android:id="@+id/scrollView1"
android:layout_width="fill_parent"
android:layout_h...
How to change background color in android app
...in this case):
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent">
...
</LinearLayout>
Paschalis and James, who rep...
RuntimeException: Unable to instantiate application
...rbose error message raised by underlying framework when dalvik re-install .apk file and trying to reuse or recycle the previous opened activity/view from the same package (if you haven't closed the previous installed app yet). It has nothing to do with your app, moreover, it is very unlikely that yo...
App Inventor 2 数学代码块 · App Inventor 2 中文网
...imal)
是否为数字 (is a number)
进制转换 (convert number)
按位与 (bitwise and)
按位或 (bitwise or Inclusive)
按位异或 (bitwise or Exclusive)
列表中出现次数最多的元素 (mode)
案例：指定将二进制的某一位(Bit)改为1
案例：指定将二进制...