如何解决inputStream.read 未附加到 Cordova 插件中的调试器时返回 1
我有一个原生 Android 应用程序,它是 RfidScanner。它工作正常。但是当我将 Kotlin 文件作为 Cordova 插件导入时,它仅在硬件连接到调试器时才有效,所以当我在调试时。这可能是线程问题,因为时间不同吗?同样,它不会发生在原生 Android 中。
inputStream.read 在没有调试器的情况下返回 1
inputStream.read 使用调试器返回 13(=正确)
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documentation 明确提到使用
ExecutorService
来运行后台线程。有趣的开始(){ _isRunning = 真 cordovaInterface.threadPool.submit { 尝试 { Log.d("JIM","executorService.submit ${Thread.currentThread().name}") 而(_isRunning){ 线程睡眠(100) Log.d("JIM","Thread.sleep(100) inside") val 缓冲区 = ByteArray(256) 尝试 { val 可用 = inputStream.read(buffer,buffer.size) Log.d("JIM","inputStream.read(buffer") 如果(可用 > 0){ val 数据 = ByteArray(可用) System.arraycopy(buffer,data,available)
Log.d("JIM","available = $available > data = ${data.size}") process(data) } } catch (e: Exception) { Log.d("JIM","Exception") e.printStackTrace() } } } catch (e: Exception) { Log.d("JIM","Exception") e.printStackTrace() } } Log.d("JIM","Thread.sleep(100) before send ${Thread.currentThread().name}") send(_scanCommand)
}
没有调试器:
2021-01-11 18:39:18.125 8836-8836/nl.rfidscanner D/JIM: Thread.sleep(100) before send main
2021-01-11 18:39:18.125 8836-8899/nl.rfidscanner D/JIM: executorService.submit pool-1-thread-1
2021-01-11 18:39:18.125 8836-8836/nl.rfidscanner D/JIM: send [B@a8fa829
2021-01-11 18:39:18.225 8836-8899/nl.rfidscanner D/JIM: Thread.sleep(100) inside
2021-01-11 18:39:18.226 8836-8899/nl.rfidscanner D/JIM: inputStream.read(buffer
2021-01-11 18:39:18.226 8836-8899/nl.rfidscanner D/JIM: available = 1 > data = 1
2021-01-11 18:39:18.226 8836-8899/nl.rfidscanner D/JIM: data != null
2021-01-11 18:39:18.226 8836-8899/nl.rfidscanner D/JIM: byte data size = 1
2021-01-11 18:39:18.226 8836-8899/nl.rfidscanner D/JIM: send [B@a8fa829
2021-01-11 18:39:18.327 8836-8899/nl.rfidscanner D/JIM: Thread.sleep(100) inside
2021-01-11 18:39:19.353 8836-8836/nl.rfidscanner D/JIM: 4. onStopScan
使用调试器(可用 = 13,这是正确的):
2021-01-11 18:39:54.185 9013-9013/nl.rfidscanner D/JIM: Thread.sleep(100) before send main
2021-01-11 18:39:54.185 9013-9084/nl.rfidscanner D/JIM: executorService.submit pool-1-thread-1
2021-01-11 18:39:55.262 9013-9013/nl.rfidscanner D/JIM: send [B@3f1554d
2021-01-11 18:39:57.009 9013-9084/nl.rfidscanner D/JIM: Thread.sleep(100) inside
2021-01-11 18:39:57.009 9013-9084/nl.rfidscanner D/JIM: inputStream.read(buffer
2021-01-11 18:39:59.060 9013-9084/nl.rfidscanner D/JIM: available = 13 > data = 13
2021-01-11 18:39:59.723 9013-9084/nl.rfidscanner D/JIM: data != null
2021-01-11 18:39:59.723 9013-9084/nl.rfidscanner D/JIM: byte data size = 13
2021-01-11 18:40:00.096 9013-9084/nl.rfidscanner D/JIM: byte data size = 13
2021-01-11 18:40:00.532 9013-9084/nl.rfidscanner D/JIM: byte != 0.toByte()
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