如何获得所连接的WiFi的Andr​​oid信号强度？ [英] How to get signal strength of connected WiFi android?

问题描述

我要得到这个无线它与我的设备连接的信号强度。这可能是容易的。但我初学者。而它的功课。如何得到它？

我想这code。但是，这是行不通的。

  registerReceiver（新BroadcastReceiver的（）{

    @覆盖
    公共无效的onReceive（上下文的背景下，意图意图）{
        最后WifiManager无线=（WifiManager）getSystemService（Context.WIFI_SERVICE）;
        INT状态= wifi.getWifiState（）;
        如果（国家== WifiManager.WIFI_STATE_ENABLED）{
            名单＆LT; ScanResult＆GT;结果= wifi.getScanResults（）;

            对于（ScanResult结果：结果）{
                如果（result.BSSID.equals（wifi.getConnectionInfo（）。getBSSID（）））{
                    INT级别= WifiManager.calculateSignalLevel（wifi.getConnectionInfo（）。getRssi（），
                            result.level）;
                    INT差=等级* 100 / result.level;
                    INT signalStrangth = 0;
                    如果（差值＆GT; = 100）
                        signalStrangth = 4;
                    否则，如果（差值＆GT; = 75）
                        signalStrangth = 3;
                    否则，如果（差值＆GT; = 50）
                        signalStrangth = 2;
                    否则，如果（差值＆GT; = 25）
                        signalStrangth = 1;
                    tv.setText（tv.getText（）+\ nDifference：+差+信号状态：+ signalStrangth）;

                }

            }
        }
    }
}，新的IntentFilter（WifiManager.RSSI_CHANGED_ACTION））;
 

我也试过这个code。但是，这是行不通了。

  INT numberOfLevels = 5;
    WifiInfo wifiInfo = wifiManager.getConnectionInfo（）;
    INT水平= WifiManager.calculateSignalLevel（wifiInfo.getRssi（），numberOfLevels）;
 

解决方案

希望工程。

 公共无效的onReceive（WifiManager wifiManager）{
                      INT numberOfLevels = 5;
                      WifiInfo wifiInfo = wifiManager.getConnectionInfo（）;
                      INT水平= WifiManager.calculateSignalLevel（wifiInfo.getRssi（），numberOfLevels）;
                      的System.out.println（酒吧=+级）;
                }
 

I want to get signal strength of this wifi which is connected with my device. This is probably easy. But I am beginner. And It's homework. How to get it?

I tried this code. But it doesn't work.

    registerReceiver(new BroadcastReceiver() {

    @Override
    public void onReceive(Context context, Intent intent) {
        final WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
        int state = wifi.getWifiState();
        if(state == WifiManager.WIFI_STATE_ENABLED) {
            List<ScanResult> results = wifi.getScanResults();

            for (ScanResult result : results) {
                if(result.BSSID.equals(wifi.getConnectionInfo().getBSSID())) {
                    int level = WifiManager.calculateSignalLevel(wifi.getConnectionInfo().getRssi(),
                            result.level);
                    int difference = level * 100 / result.level;
                    int signalStrangth= 0;
                    if(difference >= 100)
                        signalStrangth = 4;
                    else if(difference >= 75)
                        signalStrangth = 3;
                    else if(difference >= 50)
                        signalStrangth = 2;
                    else if(difference >= 25)
                        signalStrangth = 1;
                    tv.setText(tv.getText() + "\nDifference :" + difference + " signal state:" + signalStrangth);

                }

            }
        }
    }
}, new IntentFilter(WifiManager.RSSI_CHANGED_ACTION));

I also tried this code. But this is doesn't work too.

    int numberOfLevels = 5;
    WifiInfo wifiInfo = wifiManager.getConnectionInfo();
    int level = WifiManager.calculateSignalLevel(wifiInfo.getRssi(), numberOfLevels);

解决方案

Hope it works..

public void onReceive(WifiManager wifiManager) {
                      int numberOfLevels=5;
                      WifiInfo wifiInfo = wifiManager.getConnectionInfo();
                      int level=WifiManager.calculateSignalLevel(wifiInfo.getRssi(), numberOfLevels);
                      System.out.println("Bars =" +level);
                }

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