问题WifiManager.calculateSignalLevel(RSSI,5) [英] Issue with WifiManager.calculateSignalLevel(RSSI, 5)
问题描述
我想用Wifimanager来计算的扫描过程中发现的接入点的信号电平。
I am trying to use the Wifimanager to calculate the Signal Level of the access points found during a scan.
我使用下面的方法:
<一个href="http://developer.android.com/intl/de/reference/android/net/wifi/WifiManager.html#calculateSignalLevel%28int,%20int%29"相对=nofollow> WifiManager.calculateSignalLevel(INT,INT)
但它似乎总是返回相同的INT无论RSSI水平是什么。
But it appears to always return the same int no matter what the RSSI level is.
下面是我的code:
public int calculateQoS(int aRSSI){
signalLevel = WifiManager.calculateSignalLevel(RSSI, 5);
return signalLevel;
}
public void testCalculateQoS(){
Log.d("signal", "signal = : "
+ connMonitor.calculateQoS(-44)
+ " " + connMonitor.calculateQoS(-80)
+ " " + connMonitor.calculateQoS(-120)
+ " " + connMonitor.calculateQoS(-20));
}
日志记录输出1为所有的测试用例calculateQoS(INT)。
The logging outputs 1 for all the test cases for calculateQoS(int).
我在这里丢失了一些东西简单?为什么信号电始终为1?
Am I missing something simple here? Why is the SignalLevel always 1?
推荐答案
看来,calculateSignalLevel实现这种方式:
It seems that calculateSignalLevel is implemented this way:
public static int calculateSignalLevel(int rssi, int numLevels) {
if (rssi <= MIN_RSSI) {
return 0;
} else if (rssi >= MAX_RSSI) {
return numLevels - 1;
} else {
int partitionSize = (MAX_RSSI - MIN_RSSI) / (numLevels - 1);
return (rssi - MIN_RSSI) / partitionSize;
}
}
这也许code片段可以解释你的问题。另请注意:
Maybe this code snippet can explain your problem. Also note:
<一个href="http://$c$c.google.com/p/android/issues/detail?id=2555">http://$c$c.google.com/p/android/issues/detail?id=2555
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