要将Android手机连接到配置的网络，可以使用以下代码示例：

1. 检查并请求必要的权限（ACCESS_WIFI_STATE和CHANGE_WIFI_STATE）：

if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_WIFI_STATE) != PackageManager.PERMISSION_GRANTED ||
    ContextCompat.checkSelfPermission(this, Manifest.permission.CHANGE_WIFI_STATE) != PackageManager.PERMISSION_GRANTED) {
    ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_WIFI_STATE, Manifest.permission.CHANGE_WIFI_STATE}, 1);
}

2. 创建一个WifiManager对象并启用Wifi：

WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
wifiManager.setWifiEnabled(true);

3. 获取要连接的网络配置：

String networkSSID = "Your Network SSID";
String networkPassword = "Your Network Password";

WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = "\"" + networkSSID + "\"";
wifiConfig.preSharedKey = "\"" + networkPassword + "\"";

4. 连接到网络：

int networkId = wifiManager.addNetwork(wifiConfig);
wifiManager.disconnect();
wifiManager.enableNetwork(networkId, true);
wifiManager.reconnect();

完整的示例代码如下：

import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // 检查并请求必要的权限
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_WIFI_STATE) != PackageManager.PERMISSION_GRANTED ||
            ContextCompat.checkSelfPermission(this, Manifest.permission.CHANGE_WIFI_STATE) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_WIFI_STATE, Manifest.permission.CHANGE_WIFI_STATE}, 1);
        }

        // 创建WifiManager对象并启用Wifi
        WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
        wifiManager.setWifiEnabled(true);

        // 获取要连接的网络配置
        String networkSSID = "Your Network SSID";
        String networkPassword = "Your Network Password";

        WifiConfiguration wifiConfig = new WifiConfiguration();
        wifiConfig.SSID = "\"" + networkSSID + "\"";
        wifiConfig.preSharedKey = "\"" + networkPassword + "\"";

        // 连接到网络
        int networkId = wifiManager.addNetwork(wifiConfig);
        wifiManager.disconnect();
        wifiManager.enableNetwork(networkId, true);
        wifiManager.reconnect();
    }
}

在代码示例中，请将"Your Network SSID"替换为要连接的网络的SSID，并将"Your Network Password"替换为网络的密码。