public long getSeen() {
long seen = 0;
for (ScanResult result : mScanResultCache.snapshot().values()) {
if (result.timestamp > seen) {
seen = result.timestamp;
}
}
return seen;
}
public int getRssi() {
int rssi = Integer.MIN_VALUE;
for (ScanResult result : mScanResultCache.snapshot().values()) {
if (result.level > rssi) {
rssi = result.level;
}
}
return rssi;
}
public void saveWifiState(Bundle savedState) {
if (ssid != null) savedState.putString(KEY_SSID, getSsidStr());
savedState.putInt(KEY_SECURITY, security);
savedState.putInt(KEY_PSKTYPE, pskType);
if (mConfig != null) savedState.putParcelable(KEY_CONFIG, mConfig);
savedState.putParcelable(KEY_WIFIINFO, mInfo);
savedState.putParcelableArrayList(
KEY_SCANRESULTCACHE, new ArrayList<ScanResult>(mScanResultCache.snapshot().values()));
if (mNetworkInfo != null) {
savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo);
}
}
protected Map<String, Cursor> getSnapshot() {
return mLruCache.snapshot();
}
/**
* Returns the visibility status of the WifiConfiguration.
*
* @return autojoin debugging information TODO: use a string formatter ["rssi 5Ghz", "num results
* on 5GHz" / "rssi 5Ghz", "num results on 5GHz"] For instance [-40,5/-30,2]
*/
private String getVisibilityStatus() {
StringBuilder visibility = new StringBuilder();
StringBuilder scans24GHz = null;
StringBuilder scans5GHz = null;
String bssid = null;
long now = System.currentTimeMillis();
if (mInfo != null) {
bssid = mInfo.getBSSID();
if (bssid != null) {
visibility.append(" ").append(bssid);
}
visibility.append(" rssi=").append(mInfo.getRssi());
visibility.append(" ");
visibility.append(" score=").append(mInfo.score);
visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate));
visibility.append(String.format("%.1f,", mInfo.txRetriesRate));
visibility.append(String.format("%.1f ", mInfo.txBadRate));
visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate));
}
int rssi5 = WifiConfiguration.INVALID_RSSI;
int rssi24 = WifiConfiguration.INVALID_RSSI;
int num5 = 0;
int num24 = 0;
int numBlackListed = 0;
int n24 = 0; // Number scan results we included in the string
int n5 = 0; // Number scan results we included in the string
Map<String, ScanResult> list = mScanResultCache.snapshot();
// TODO: sort list by RSSI or age
for (ScanResult result : list.values()) {
if (result.seen == 0) continue;
if (result.autoJoinStatus != ScanResult.ENABLED) numBlackListed++;
if (result.frequency >= LOWER_FREQ_5GHZ && result.frequency <= HIGHER_FREQ_5GHZ) {
// Strictly speaking: [4915, 5825]
// number of known BSSID on 5GHz band
num5 = num5 + 1;
} else if (result.frequency >= LOWER_FREQ_24GHZ && result.frequency <= HIGHER_FREQ_24GHZ) {
// Strictly speaking: [2412, 2482]
// number of known BSSID on 2.4Ghz band
num24 = num24 + 1;
}
// Ignore results seen, older than 20 seconds
if (now - result.seen > VISIBILITY_OUTDATED_AGE_IN_MILLI) continue;
if (result.frequency >= LOWER_FREQ_5GHZ && result.frequency <= HIGHER_FREQ_5GHZ) {
if (result.level > rssi5) {
rssi5 = result.level;
}
if (n5 < 4) {
if (scans5GHz == null) scans5GHz = new StringBuilder();
scans5GHz.append(" \n{").append(result.BSSID);
if (bssid != null && result.BSSID.equals(bssid)) scans5GHz.append("*");
scans5GHz.append("=").append(result.frequency);
scans5GHz.append(",").append(result.level);
if (result.autoJoinStatus != 0) {
scans5GHz.append(",st=").append(result.autoJoinStatus);
}
if (result.numIpConfigFailures != 0) {
scans5GHz.append(",ipf=").append(result.numIpConfigFailures);
}
scans5GHz.append("}");
n5++;
}
} else if (result.frequency >= LOWER_FREQ_24GHZ && result.frequency <= HIGHER_FREQ_24GHZ) {
if (result.level > rssi24) {
rssi24 = result.level;
}
if (n24 < 4) {
if (scans24GHz == null) scans24GHz = new StringBuilder();
scans24GHz.append(" \n{").append(result.BSSID);
if (bssid != null && result.BSSID.equals(bssid)) scans24GHz.append("*");
scans24GHz.append("=").append(result.frequency);
scans24GHz.append(",").append(result.level);
if (result.autoJoinStatus != 0) {
scans24GHz.append(",st=").append(result.autoJoinStatus);
}
if (result.numIpConfigFailures != 0) {
scans24GHz.append(",ipf=").append(result.numIpConfigFailures);
}
scans24GHz.append("}");
n24++;
}
}
}
visibility.append(" [");
if (num24 > 0) {
visibility.append("(").append(num24).append(")");
if (n24 <= 4) {
if (scans24GHz != null) {
visibility.append(scans24GHz.toString());
}
} else {
visibility.append("max=").append(rssi24);
if (scans24GHz != null) {
visibility.append(",").append(scans24GHz.toString());
}
}
}
visibility.append(";");
if (num5 > 0) {
visibility.append("(").append(num5).append(")");
if (n5 <= 4) {
if (scans5GHz != null) {
visibility.append(scans5GHz.toString());
}
} else {
visibility.append("max=").append(rssi5);
if (scans5GHz != null) {
visibility.append(",").append(scans5GHz.toString());
}
}
}
if (numBlackListed > 0) visibility.append("!").append(numBlackListed);
visibility.append("]");
return visibility.toString();
}
