Android10自动连接WiFi问题的解决
说明:
本文主要说明扫码之后自动连接WiFi的一些处理,扫码的流程相对简单,网上教程也比较多,对于目前Android各个版本也没有太多变化。
问题描述:
最近在做项目的时候,发现以前的项目有扫描二维码自动连接WiFi的功能,设备改了生成二维码的方式,然后发现手机无法自动连接WiFi了。
问题原因:
经过代码调试发现:(我都是真机调试)
wifiManager.addNetwork(WifiConfiguration);
在添加WiFi的时候,这行代码始终返回-1,换用同事手机竟然神奇的可以连接,然后一脸蒙蔽,裂开了,不怕有问题,就怕有的有问题,有的没问题。
问题解决:
区别:我测试手机 小米10 android Q(andorid 10)的系统,同事手机荣耀 android P的系统,大胆猜测是不是android 10又搞了什么奇怪的东西
根因:皇天不负有心人,上代码:
/** * Add a new network description to the set of configured networks. * The {@code networkId} field of the supplied configuration object * is ignored. * <p/> * The new network will be marked DISABLED by default. To enable it, * called {@link #enableNetwork}. * * @param config the set of variables that describe the configuration, * contained in a {@link WifiConfiguration} object. * If the {@link WifiConfiguration} has an Http Proxy set * the calling app must be System, or be provisioned as the Profile or Device Owner. * @return the ID of the newly created network description. This is used in * other operations to specified the network to be acted upon. * Returns {@code -1} on failure. * * @deprecated * a) See {@link WifiNetworkSpecifier.Builder#build()} for new * mechanism to trigger connection to a Wi-Fi network. * b) See {@link #addNetworkSuggestions(List)}, * {@link #removeNetworkSuggestions(List)} for new API to add Wi-Fi networks for consideration * when auto-connecting to wifi. * <b>Compatibility Note:</b> For applications targeting * {@link android.os.Build.VERSION_CODES#Q} or above, this API will always return {@code -1}. */ @Deprecated public int addNetwork(WifiConfiguration config) { if (config == null) { return -1; } config.networkId = -1; return addOrUpdateNetwork(config); }
这是WifiManager.class中addNetwork方法的描述,注意注释中最后一行
{@link android.os.Build.VERSION_CODES#Q} or above, this API will always return {@code -1}.
android Q或者更高的版本,这个方法始终返回-1,至此问题原因分析完毕,接下来开始解决:官网一顿操作:Android 10 的新方案如下连接:https://developer.android.google.cn/guide/topics/connectivity/wifi-bootstrap
代码如下:
public void test() { if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.Q) { NetworkSpecifier specifier = new WifiNetworkSpecifier.Builder() .setSsidPattern(new PatternMatcher("此处WiFi名称", PatternMatcher.PATTERN_PREFIX)) .setWpa2Passphrase("此处WiFi密码") .build(); NetworkRequest request = new NetworkRequest.Builder() .addTransportType(NetworkCapabilities.TRANSPORT_WIFI) .removeCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) .setNetworkSpecifier(specifier) .build(); ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); ConnectivityManager.NetworkCallback networkCallback = new ConnectivityManager.NetworkCallback() { @Override public void onAvailable(Network network) { // do success processing here.. } @Override public void onUnavailable() { // do failure processing here.. } }; connectivityManager.requestNetwork(request, networkCallback); // Release the request when done. // connectivityManager.unregisterNetworkCallback(networkCallback); } }
注:我用的是WPA的 加密模式,亲测可用。至此完结,撒花。
栏 目:Android代码
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