wine-android/app/src/main/java/hm/wine/seller/MainActivity.java

package hm.wine.seller;

import android.Manifest;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.media.AudioManager;
import android.os.Build;
import android.os.Bundle;
import android.webkit.*;
import androidx.annotation.NonNull;
import androidx.annotation.RequiresApi;
import androidx.core.app.ActivityCompat;
import com.alibaba.fastjson.JSON;
import hm.wine.seller.lib.*;
import hm.wine.seller.bean.HttpResp;
import hm.wine.seller.bean.HttpRespData;
import okhttp3.*;

public class MainActivity extends Activity {
    private final String[] Permissions = {
            Manifest.permission.WRITE_EXTERNAL_STORAGE,
            Manifest.permission.READ_EXTERNAL_STORAGE
    };
    private WebView view = null;
    private final int PermissionCode = 1000;
    private final int SoftVer = 23120701;
    private final String Version = "v2023.12.07-01";
    private AudioManager audioManager = null;
    private int maxVolume = 0;

    @RequiresApi(api = Build.VERSION_CODES.O)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main_activity);

        WakeLock.acquireWakeLock(this);
        Alarm.setRepeatingAlarm(this);
        startService(new Intent(this, KeepAlive.class));
        requestPermission();
    }

    @Override
    protected void onDestroy() {
        WakeLock.releaseWakeLock();
        Alarm.cancelRepeatingAlarm(this);
        stopService(new Intent(this, KeepAlive.class));
        if (view != null) {
            view.clearCache(true);
            view.loadUrl("about:blank");
            view.stopLoading();
            view.onPause();
            view.destroy();
        }
        UartUtils.close();
        super.onDestroy();
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == PermissionCode) {
            for (int i = 0; i < permissions.length; i++) {
                if (grantResults[i] == 0) {
                    requestPermission();
                    return;
                }
            }
            start();
        }
    }

    private boolean checkPermissions() {
        for (String permission : Permissions) {
            if (ActivityCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED)
                return false;
        }
        return true;
    }

    private void requestPermission() {
        if (!checkPermissions()) {
            ActivityCompat.requestPermissions(this, Permissions, PermissionCode);
        } else start();
    }

    private void start() {
        audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
        maxVolume = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
        while (audioManager.getStreamVolume(AudioManager.STREAM_MUSIC) < maxVolume)
            audioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_RAISE, 0);

        enableGesture();
        versionCheck();
        launchWebsite();
    }

    private void versionCheck() {
        new Thread(() -> {
            String url = getResources().getString(R.string.version_url);
            Request request = new Request.Builder().url(url).build();
            OkHttpClient client = new OkHttpClient();
            try {
                Response response = client.newCall(request).execute();
                if (response.code() == 200 && response.body() != null) {
                    String str = response.body().string();
                    HttpResp httpResp = JSON.parseObject(str, HttpResp.class);
                    HttpRespData data = httpResp.getData();
                    if (httpResp.isStatus() && data.getVer() > SoftVer) {
                        request = new Request.Builder().url(data.getUrl()).build();
                        client.newCall(request).enqueue(new DownloadCallback(this::reboot));
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }).start();
    }

    private void reboot() {
        Intent restart = new Intent("wits.action.reboot");
        sendBroadcast(restart);
    }

    private void enableGesture() {
        Intent show = new Intent("show.systemui"), allow = new Intent("com.zc.open_gesture");
        sendBroadcast(show);
        sendBroadcast(allow);
    }

    private void disableGesture() {
        Intent hide = new Intent("hide.systemui"), forbid = new Intent("com.zc.close_gesture");
        sendBroadcast(hide);
        sendBroadcast(forbid);
    }

    public class AppContext {
        public void reboot() {
            MainActivity.this.reboot();
        }

        public void enableGesture() {
            MainActivity.this.enableGesture();
        }

        public void disableGesture() {
            MainActivity.this.disableGesture();
        }
    }

    @SuppressLint("SetJavaScriptEnabled")
    private void launchWebsite() {
        String front = getResources().getString(R.string.front_host);
        view = findViewById(R.id.webview);
        WebSettings settings = view.getSettings();
        settings.setJavaScriptEnabled(true);
        settings.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
        settings.setMediaPlaybackRequiresUserGesture(false);
        settings.setBlockNetworkImage(false);
        settings.setLoadsImagesAutomatically(true);
        settings.setDefaultTextEncodingName("utf-8");

        view.addJavascriptInterface(
                new JsBridge(view, Version, new AppContext(), getApplication(), audioManager, maxVolume),
                "android"
        );
        view.loadUrl(front);
    }
}