我完全迷失在 WiFi API 的版本中。 我想以编程方式连接到配置的 WiFi 网络。 如this question所述： Connect to wifi network Android programmatically
我在 Android 10 上开发，想编写一个也兼容旧 Android 版本的代码。
在我的 android 10 上，所描述的代码不起作用。 在 Android 10 上实现该功能需要哪些代码？
如何编写一个也可以在我的其他 Android 9 手机上运行的应用程序？
问候于尔根
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标签： android wifi android-wifi android-developer-api
从 Android Q 开始，连接 Wifi 网络发生了很大变化。
首先，您使用的代码或@matdev 提到的使用来自WifiManager 的API public int addNetwork (WifiConfiguration config) 在Android 10 中已弃用，并将返回-1 作为networkID。
在 Android Q 中，建议使用两个类用于 Wifi 连接。但是他们每个人都有自己的优点和缺点。
1. WifiNetworkSpecifier
WifiUtil 库中的代码示例
WifiNetworkSpecifier.Builder wifiNetworkSpecifierBuilder = new WifiNetworkSpecifier.Builder()
.setSsid(scanResult.SSID)
.setBssid(MacAddress.fromString(scanResult.BSSID));
final String security = ConfigSecurities.getSecurity(scanResult);
ConfigSecurities.setupWifiNetworkSpecifierSecurities(wifiNetworkSpecifierBuilder, security, password);
NetworkRequest networkRequest = new NetworkRequest.Builder()
.addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
.setNetworkSpecifier(wifiNetworkSpecifierBuilder.build())
.build();
// not sure, if this is needed
if (networkCallback != null) {
connectivityManager.unregisterNetworkCallback(networkCallback);
}
networkCallback = new ConnectivityManager.NetworkCallback() {
@Override
public void onAvailable(@NonNull Network network) {
super.onAvailable(network);
wifiLog("AndroidQ+ connected to wifi ");
// bind so all api calls are performed over this new network
connectivityManager.bindProcessToNetwork(network);
}
@Override
public void onUnavailable() {
super.onUnavailable();
wifiLog("AndroidQ+ could not connect to wifi");
}
};
connectivityManager.requestNetwork(networkRequest, networkCallback);
我对这个实现的观察是 - 它更像是 P2P 通信，此时来自同一设备的其他应用程序无法使用连接的 WiFi 网络中的互联网
2. WifiNetworkSuggestion
来自 developer.android.com 的代码示例
final WifiNetworkSuggestion suggestion1 =
new WifiNetworkSuggestion.Builder()
.setSsid("test111111")
.setIsAppInteractionRequired(true) // Optional (Needs location permission)
.build();
final WifiNetworkSuggestion suggestion2 =
new WifiNetworkSuggestion.Builder()
.setSsid("test222222")
.setWpa2Passphrase("test123456")
.setIsAppInteractionRequired(true) // Optional (Needs location permission)
.build();
final WifiNetworkSuggestion suggestion3 =
new WifiNetworkSuggestion.Builder()
.setSsid("test333333")
.setWpa3Passphrase("test6789")
.setIsAppInteractionRequired(true) // Optional (Needs location permission)
.build();
final PasspointConfiguration passpointConfig = new PasspointConfiguration();
// configure passpointConfig to include a valid Passpoint configuration
final WifiNetworkSuggestion suggestion4 =
new WifiNetworkSuggestion.Builder()
.setPasspointConfig(passpointConfig)
.setIsAppInteractionRequired(true) // Optional (Needs location permission)
.build();
final List<WifiNetworkSuggestion> suggestionsList =
new ArrayList<WifiNetworkSuggestion> {{
add(suggestion1);
add(suggestion2);
add(suggestion3);
add(suggestion4);
}};
final WifiManager wifiManager =
(WifiManager) context.getSystemService(Context.WIFI_SERVICE);
final int status = wifiManager.addNetworkSuggestions(suggestionsList);
if (status != WifiManager.STATUS_NETWORK_SUGGESTIONS_SUCCESS) {
// do error handling here…
}
// Optional (Wait for post connection broadcast to one of your suggestions)
final IntentFilter intentFilter =
new IntentFilter(WifiManager.ACTION_WIFI_NETWORK_SUGGESTION_POST_CONNECTION);
final BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (!intent.getAction().equals(
WifiManager.ACTION_WIFI_NETWORK_SUGGESTION_POST_CONNECTION)) {
return;
}
// do post connect processing here...
}
};
context.registerReceiver(broadcastReceiver, intentFilter);
我对上述实现的观察是，当您调用wifiManager.addNetworkSuggestions 时，它会返回成功并向用户显示连接通知。如果用户接受，设备将连接到 WiFi 网络，其他应用程序可以使用互联网。但是如果用户断开网络，你再次调用wifiManager.addNetworkSuggestions，它会返回 WifiManager.STATUS_NETWORK_SUGGESTIONS_ERROR_ADD_DUPLICATE错误。
看起来这个 API 只是提供了设备可以自动连接的网络的建议列表。但连接将由操作系统决定。
但如果您真的需要解决方案，可以使用 Android Source 的 Default Wifi QR Code Scanner 的无证方法，该扫描器可以检测 QR Code schems Zxing 和 DPP。
这是一个代码示例：
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == REQUEST_CODE_WIFI_QR_SCANNER && resultCode == RESULT_OK)
{
//WIFI Connection is Successful
}
else
{
//.......
}
}
@RequiresApi(api = Build.VERSION_CODES.Q)
private void startWifiQRCodeScanner(Context context)
{
final String INTENT_ACTION_WIFI_QR_SCANNER = "android.settings.WIFI_DPP_ENROLLEE_QR_CODE_SCANNER";
WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
if(wifiManager.isEasyConnectSupported())
{
final Intent intent = new Intent(INTENT_ACTION_WIFI_QR_SCANNER);
startActivityForResult(intent, REQUEST_CODE_WIFI_QR_SCANNER);
}
}
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这是一个适用于 Android 6（API 级别 23）的解决方案
String AP_SSID = "YourWifiNetworkSSID";
String AP_PASSWORD = "YourWifiNetworkPassword";
wifiManager = (WifiManager) getApplicationContext().getSystemService(WIFI_SERVICE);
WifiConfiguration conf = new WifiConfiguration();
conf.SSID = "\"" + AP_SSID + "\""; // Please note the quotes. String should contain ssid in quotes
conf.preSharedKey = "\"" + AP_PASSWORD + "\"";
wifiManager.addNetwork(conf);
try {
List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
for (WifiConfiguration i : list) {
if (i.SSID != null && i.SSID.equals("\"" + AP_SSID + "\"")) {
wifiManager.disconnect();
wifiManager.enableNetwork(i.networkId, true);
wifiManager.reconnect();
break;
}
}
} catch (SecurityException e) {
Log.e(TAG, e.getMessage());
}
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