Kate Mobile v109.1版本的 MD5 值为：fcd76ded5f363ecbfac46035a4ed2a23

以下内容为反编译后的 UpdateChecker.java 源代码，内容仅作参考

package com.perm.utils;

import android.app.Activity;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import android.text.SpannableString;
import android.text.method.LinkMovementMethod;
import android.widget.TextView;
import android.widget.Toast;
import androidx.appcompat.app.AlertDialog;
import com.perm.kate.Helper;
import com.perm.kate.KApplication;
import com.perm.kate.R;
import com.perm.kate.notifications.UpdateNotification;
import java.io.BufferedInputStream;
import java.io.FilterInputStream;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.zip.GZIPInputStream;
import org.json.JSONObject;
public abstract class UpdateChecker {
    public static void check(Activity activity, boolean z, boolean z2) {
        HttpURLConnection httpURLConnection;
        HttpURLConnection httpURLConnection2 = null;
        try {
            try {
                httpURLConnection = (HttpURLConnection) new URL("http://conf.katemobile.ru/conf/version.json").openConnection();
            } finally {
                if (httpURLConnection2 != null) {
                    httpURLConnection2.disconnect();
                }
            }
        } catch (IOException e) {
            e = e;
        } catch (Throwable th) {
            th = th;
        }
        try {
            httpURLConnection.setConnectTimeout(30000);
            httpURLConnection.setReadTimeout(30000);
            httpURLConnection.setUseCaches(false);
            httpURLConnection.setDoOutput(false);
            httpURLConnection.setDoInput(true);
            httpURLConnection.setRequestProperty("Accept-Encoding", "gzip");
            if (httpURLConnection.getResponseCode() == -1) {
                httpURLConnection.disconnect();
                return;
            }
            FilterInputStream bufferedInputStream = new BufferedInputStream(httpURLConnection.getInputStream(), 8192);
            String headerField = httpURLConnection.getHeaderField("Content-Encoding");
            if (headerField != null && headerField.equalsIgnoreCase("gzip")) {
                bufferedInputStream = new GZIPInputStream(bufferedInputStream);
            }
            JSONObject jSONObject = new JSONObject(Utils.convertStreamToString(bufferedInputStream));
            int i = jSONObject.getInt("code");
            SharedPreferences defaultSharedPreferences = PreferenceManager.getDefaultSharedPreferences(activity);
            int i2 = defaultSharedPreferences.getInt("displayed_code", 0);
            if (i > Helper.getVersionCode(activity) && (i > i2 || z2)) {
                SharedPreferences.Editor edit = defaultSharedPreferences.edit();
                edit.putInt("displayed_code", i);
                edit.apply();
                String optString = jSONObject.optString("name");
                String optString2 = jSONObject.optString("message");
                String optString3 = jSONObject.optString("market");
                if (z2) {
                    activity.startActivity(UpdateNotification.makeUpdateActivityIntent(optString, optString2, activity, optString3));
                } else {
                    UpdateNotification.display(optString, optString2, activity, optString3);
                }
            }
            if (i <= Helper.getVersionCode(activity) && z2) {
                activity.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(KApplication.current, (int) R.string.no_updates_found, 1).show();
                    }
                });
            }
            GroupInvite.setRatio(jSONObject.optInt("r"));
            if (!z2) {
                newsAlert(activity, z, jSONObject);
            }
            TimeFix.setEnabled(jSONObject.optBoolean("timefix", true));
            if (jSONObject.has("aal")) {
                AudioAdCounter.setLimit(jSONObject.optInt("aal", 3));
            }
            BackgroundMusicCounter.setLimit(jSONObject.optInt("bgml", 1800));
            SpamHelper.setServerRules(jSONObject.optString("s", ""));
            httpURLConnection.disconnect();
        } catch (IOException e2) {
            e = e2;
            httpURLConnection2 = httpURLConnection;
            e.printStackTrace();
        } catch (Throwable th2) {
            th = th2;
            httpURLConnection2 = httpURLConnection;
            th.printStackTrace();
            Helper.reportError(th);
            if (httpURLConnection2 != null) {
            }
        }
    }

    public static void checkOnThread(final Activity activity, final boolean z, final boolean z2) {
        new Thread() {
            @Override
            public void run() {
                UpdateChecker.check(activity, z, z2);
            }
        }.start();
    }

    public static void checkSometimes(Activity activity, boolean z) {
        SharedPreferences defaultSharedPreferences = PreferenceManager.getDefaultSharedPreferences(activity);
        long j = defaultSharedPreferences.getLong("last_update_check", 0L);
        long currentTimeMillis = System.currentTimeMillis();
        if (currentTimeMillis - j > 259200000) {
            checkOnThread(activity, z, false);
            defaultSharedPreferences.edit().putLong("last_update_check", currentTimeMillis).apply();
        }
    }

    public static void displayAlert(String str, Activity activity) {
        SpannableString spannableString = new SpannableString(str);
        android.text.util.Linkify.addLinks(spannableString, 1);
        ((TextView) new AlertDialog.Builder(activity).setMessage(spannableString).setPositiveButton(R.string.ok, (DialogInterface.OnClickListener) null).show().findViewById(16908299)).setMovementMethod(LinkMovementMethod.getInstance());
    }

    private static void displayAlertOnUiThread(final Activity activity, final String str) {
        activity.runOnUiThread(new Runnable() {
            @Override
            public void run() {
                UpdateChecker.displayAlert(str, activity);
            }
        });
    }

    private static void newsAlert(Activity activity, boolean z, JSONObject jSONObject) {
        if (z) {
            try {
                int optInt = jSONObject.optInt("msg_id");
                SharedPreferences defaultSharedPreferences = PreferenceManager.getDefaultSharedPreferences(activity);
                if (optInt > defaultSharedPreferences.getInt("displayed_message_id", 0) && !activity.isFinishing()) {
                    displayAlertOnUiThread(activity, jSONObject.optString("msg"));
                    defaultSharedPreferences.edit().putInt("displayed_message_id", optInt).apply();
                }
            } catch (Throwable th) {
                th.printStackTrace();
                Helper.reportError(th);
            }
        }
    }
}