JAVA实现忘记网络后自动连接其他AP
时间: 2023-11-11 07:02:17 浏览: 26
实现忘记网络后自动连接其他AP的方法如下:
1. 获取当前可用的WiFi列表:使用Java中的WifiManager对象获取当前可用的WiFi列表。
2. 过滤掉已经连接过的WiFi:遍历WiFi列表,排除掉已经连接过的WiFi。
3. 按照信号强度从高到低排序:使用Java中的Comparator接口实现按照信号强度从高到低排序。
4. 尝试连接WiFi:遍历排好序的WiFi列表,尝试连接其中一个WiFi,直到连接成功。
5. 监听网络连接状态:注册一个广播接收器监听网络连接状态变化,如果当前连接的WiFi信号变弱或者断开,自动连接另外一个WiFi。
下面是一个基本实现的代码示例:
```
WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
List<ScanResult> wifiList = wifiManager.getScanResults();
List<ScanResult> filteredList = new ArrayList<ScanResult>();
// 过滤掉已经连接过的WiFi
for (ScanResult scanResult : wifiList) {
if (!scanResult.SSID.equals(wifiManager.getConnectionInfo().getSSID())) {
filteredList.add(scanResult);
}
}
// 按照信号强度从高到低排序
Collections.sort(filteredList, new Comparator<ScanResult>() {
@Override
public int compare(ScanResult o1, ScanResult o2) {
return o2.level - o1.level;
}
});
// 尝试连接WiFi
for (ScanResult scanResult : filteredList) {
WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = String.format("\"%s\"", scanResult.SSID);
wifiConfig.preSharedKey = String.format("\"%s\"", password);
int networkId = wifiManager.addNetwork(wifiConfig);
wifiManager.disconnect();
wifiManager.enableNetwork(networkId, true);
wifiManager.reconnect();
// 等待连接成功
int count = 0;
while (wifiManager.getConnectionInfo().getSupplicantState() != SupplicantState.COMPLETED
&& count < 10) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
count++;
}
if (wifiManager.getConnectionInfo().getSupplicantState() == SupplicantState.COMPLETED) {
break;
}
}
// 监听网络连接状态变化
BroadcastReceiver networkReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.getType() == ConnectivityManager.TYPE_WIFI
&& !wifiManager.getConnectionInfo().getSSID().equals(networkInfo.getExtraInfo())) {
// 如果当前连接的WiFi信号变弱或者断开,自动连接另外一个WiFi
// 重复上面的连接WiFi的步骤
}
}
};
registerReceiver(networkReceiver, new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
```