如何设置 BLE 扫描间隔和 windows 不只是在 android 中选择模式？

Question

我是android的新生。我想在我的 android 设备中设置 BLE 扫描间隔和 windows，以便做一个关于邻居发现的实验。我在 google 上搜索答案，知道 android's source code 中有一些关于 BLE 扫描间隔和 windows 的定义，如下

/**
 * Scan params corresponding to regular scan setting
 */
private static final int SCAN_MODE_LOW_POWER_WINDOW_MS = 500;
private static final int SCAN_MODE_LOW_POWER_INTERVAL_MS = 5000;
private static final int SCAN_MODE_BALANCED_WINDOW_MS = 2000;
private static final int SCAN_MODE_BALANCED_INTERVAL_MS = 5000;
private static final int SCAN_MODE_LOW_LATENCY_WINDOW_MS = 5000;
private static final int SCAN_MODE_LOW_LATENCY_INTERVAL_MS = 5000;

/**
 * Scan params corresponding to batch scan setting
 */
private static final int SCAN_MODE_BATCH_LOW_POWER_WINDOW_MS = 1500;
private static final int SCAN_MODE_BATCH_LOW_POWER_INTERVAL_MS = 150000;
private static final int SCAN_MODE_BATCH_BALANCED_WINDOW_MS = 1500;
private static final int SCAN_MODE_BATCH_BALANCED_INTERVAL_MS = 15000;
private static final int SCAN_MODE_BATCH_LOW_LATENCY_WINDOW_MS = 1500;
private static final int SCAN_MODE_BATCH_LOW_LATENCY_INTERVAL_MS = 5000;

如果我想改变这些值，是否意味着我应该编译android系统？有没有更好的方法？

Answer 1

您可以自由控制等效的 if scan window 并通过开始和停止扫描在更高级别的代码中间隔自己。这正是开源 Android Beacon Library 使用其等效的可配置参数所做的：

 beaconManager.setForegroundScanPeriod(...);
 beaconManager.setForegroundBetweenScanPeriod(...);