WifiProxy/app/src/main/java/io/github/jianboy/wifiproxy/MainActivity.java

package io.github.jianboy.wifiproxy;


import android.content.Context;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import androidx.activity.EdgeToEdge;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

import io.github.jianboy.wifiproxy.utils.WifiProxyManager;

public class MainActivity extends AppCompatActivity {
    Context mContext;
    Button btn1;
    EditText edt_host, edt_port;
    SharedPreferences sharedPreferences;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        setContentView(R.layout.activity_main);
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
            return insets;
        });
        mContext = this;
        initView();
    }

    private void initView() {
        btn1 = (Button) findViewById(R.id.button1);
        edt_host = (EditText) findViewById(R.id.edt_host);
        edt_port = (EditText) findViewById(R.id.edt_port);

        // 恢复设置
        sharedPreferences = mContext.getSharedPreferences("setting", Context.MODE_PRIVATE);
        String host = sharedPreferences.getString("host", getString(R.string.v_host));
        String port = sharedPreferences.getString("port", getString(R.string.v_port));
        edt_host.setText(host);
        edt_port.setText(port);

        btn1.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                setWifiProxy();
            }
        });
    }

    /**
     * 设置wifi代理
     */
    private void setWifiProxy() {

        if (btn1.getText().toString().equals(R.string.set_wifi_proxy)) {
            WifiProxyManager.setWifiProxySettingsFor17And(mContext, edt_host.getText().toString().trim(),
                    Integer.parseInt(edt_port.getText().toString().trim()), null);
            Toast.makeText(mContext, "设置成功！", Toast.LENGTH_SHORT).show();
            btn1.setText(R.string.cancel_wifi_proxy);
        } else {
            WifiProxyManager.unsetWifiProxySettingsFor17And(mContext);
            btn1.setText(R.string.set_wifi_proxy);
        }
        saveConfig();
    }

    /**
     * 保存设置，下次直接点击按钮即可设置代理
     */
    private void saveConfig() {
        SharedPreferences.Editor editor = sharedPreferences.edit();
        editor.putString("host", edt_host.getText().toString().trim());
        editor.putString("port", edt_port.getText().toString().trim());
        editor.commit();
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == WifiProxyManager.REQUEST_LOCATION_PERMISSION_CODE) {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // Permission granted, proceed with accessing the location
            } else {
                // Permission denied, handle accordingly
            }
        }
    }

}