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通信连接组件 · App Inventor 2 中文网

... AI 助手 · 一句话生成 App 鸿蒙 · 一套积木,多端原生打包! 下载 AI2伴侣 · 安卓/鸿蒙/iOS aia 源码商店 中文社区 中文教育版 各版本对比 关于 关于我们 发布日志 服务条款 ...
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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...
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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...
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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...
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【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...
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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...
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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: ...
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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....
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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...
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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=...