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Android 4.3 Bluetooth Low Energy unstable
...w Energy (testing on the Nexus 4). After getting started with the official BLE APIs in Android 4.3, I have noticed that after I connect a device for the first time I am rarely able to successfully connect to / communicate with that device or any other device again.
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Get the distance between two geo points
...r results[] get the correct distance.
– Gastón Saillén
Nov 11 '18 at 2:58
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App Inventor 2 BLE扩展源码分析 - WriteBytes vs WriteStrings 23字节硬编...
...：23字节硬编码限制
2.1 WriteStrings 的写入路径
位于 BLEWriteOperation.write() 方法第678-690行：
if (mClass == String.class) {
byte[] str = ((String) data.get(0)).getBytes();
// 23字节硬限制！
final int len = Math.min(23,...
[SOLVED] Can't send payload > 23bytes(MTU setted to 128bytes) - #9 by ...
...cheme is dark */
/* user picked a theme a light scheme and also enabled a dark scheme */
/* deal with light scheme first */
@media (prefers-color-scheme: light) {
:root {
--primary: #222222;
--secondary: #ffffff;
--tertiary: #008...
低功耗蓝牙(BLE) 和 经典蓝牙(SPP) 的区别 - App Inventor 2 中文网 - 清泛...
BLE 和 SPP 怎么选？看应用场景：BLE适用于低功耗、轻量级的应用，例如穿戴设备、传感器网络等。而SPP适用于需要大容量数据传输的应用，例如音频设备、文件传输等。看功耗需求：如果你的应用对功耗有严格要求，需要长...
BLE（三）APP开发步骤 - 创客硬件开发 - 清泛IT社区，为创新赋能！
文章源自：https://www.gandalf.site/2018/11/bleapp.html
Android系统自4.3版本开始，引入了对BLE的支持，详见Bluetooth Low Energy。通过浏览当中的信息，我们可以得知在app开发环节，需要做到如下几件事情：
1. BLE相关权限声明
2. 操...
BLE UUID是对的但连接闪退：java.lang.IllegalArgumentException: UUID str...
...错日志
java.lang.ExceptionInInitializerError
at edu.mit.appinventor.ble.BluetoothLEint$BLEReadOperation.subscribe(BluetoothLEint.java:357)
at edu.mit.appinventor.ble.BluetoothLEint$BLEReadOperation.run(BluetoothLEint.java:325)
at android.os.Handler.handleCallback(Handler.java:958)
at and...
Case insensitive XPath contains() possible?
...ÇÅÏÕÑŒ', 'abcdefghijklmnopqrstuvwxyzäöüéèêàáâòóôùúûçåïõñœ'),'foo')]");
– Stefan Steiger
Nov 29 '13 at 9:34
1
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How do you find the last day of the month? [duplicate]
...ed Nov 2 '10 at 15:07
Øyvind BråthenØyvind Bråthen
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蓝牙BLE硬件接入及IO控制 · App Inventor 2 源码商店
... 源码列表 / 蓝牙BLE硬件接入及IO控制 蓝...