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通信连接组件 · App Inventor 2 中文网
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一分钟读懂低功耗蓝牙(BLE) MTU交换数据包 - 创客硬件开发 - 清泛IT社区,...
...sp; 在BLE中,GAP,GATT,SMP 都使用L2CAP 通道将命令及数据打包送到链路层(LINK LAYER),L2CAP 打包过程中需要指定L2CAP的长度及通道号。
Length: 3
4) L2CAP 通道号(CID):channel ID
CID: Attribut...
Android: textColor of disabled button in selector not showing?
...coding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- disabled state -->
<item android:state_enabled="false" android:color="#9D9FA2" />
<item android:color="#000"/>
</selector>
In your style.xml, put a reference to that t...
NSIS学习笔记(持续更新) - C/C++ - 清泛网 - 专注C/C++及内核技术
...e" $0
${EndIf}
Q 如何调用静默卸载?
#自动卸载上一个打包版本.begin
ReadRegStr $0 HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} ${APPNAME}" "MainProgramLocationPath"
${If} $0 != ""
Strcpy $1 $0\uninstall.exe
#下面的Call MyMe...
【BLE技术内幕】BLE技术揭秘 - 创客硬件开发 - 清泛IT论坛,有思想、有深度
...性(数据)。
GATT特别关注如何根据其描述的规则格式化打包和发送数据。在BLE网络堆栈中,属性协议(ATT)与GATT紧密对齐,GATT直接位于ATT的顶部。GATT实际上使用ATT来描述如何从两个连接的设备交换数据。5.2.1 建立联系(Connec...
How to provide different Android app icons for different gradle buildTypes?
...hough it has an important downside... both launchers will be put into your apk. – Bartek Lipinski
The better way: InsanityOnABun's answer
AndroidManifest.xml
<manifest
...
<application
android:allowBackup="true"
android:icon="${appIcon}"
android:roundI...
How do I solve the INSTALL_FAILED_DEXOPT error?
I am developing an Android application using Android 2.2, my application APK size is 22.5 MB, and I would like to create a new build for a Samsung tablet. I got the following error:
...
Android: How to change CheckBox size?
...folder
checked.xml
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="16dp"
android:height="16dp"
android:viewportHeight="24.0"
android:viewportWidth="24.0">
<path
android:fillColor="#FF000000"
android:pathData="M19,3L5,3c-1.11,0 -2,0.9 -2,2v14c0,1....
Custom circle button
...coding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="false">
<shape android:shape="oval">
<solid android:color="#fa09ad"/>
</shape>
</item>
<item android:s...
Move to another EditText when Soft Keyboard Next is clicked on Android
...ode example:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<EditText
android:id=...
