Gongcu

fun getHashKey(){
  val info: PackageInfo
        try {
            info = packageManager.getPackageInfo("com.example.a2ndaccidentprevention", PackageManager.GET_SIGNATURES)
            for (signature in info.signatures) {
                var md: MessageDigest
                md = MessageDigest.getInstance("SHA")
                md.update(signature.toByteArray())
                val something: String = String(Base64.encode(md.digest(), 0))
                //String something = new String(Base64.encodeBytes(md.digest()));

Gongcu

<?php
define('API_ACCESS_KEY','your_firebase_server_key');
 $fcmUrl = 'https://fcm.googleapis.com/fcm/send';
 $token='target_user's_token';

    $notification = [
            'title' =>'title',
            'body' => 'body of message.',
            'icon' =>'myIcon', 
            'sound' => 'mySound'

Gongcu

public class ChildAdapter extends RecyclerView.Adapter<ChildAdapter.ItemViewHolder>{
    private AdapterListener listener;
    private CalculatorEditDialog dialog;

    private long parent_id;
    private List<String> dateList= new ArrayList<>();
    private List<Long> id= new ArrayList<>();
    private List<NoteContract> noteList;
    private DateContract data;
    private String date;

Gongcu

package com.health.myapplication.alarm;

import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.os.Build;

Gongcu

 private void uploadPost(){
        progressON();
        final String text = textInputEditText.getText().toString();
        final Long time = System.currentTimeMillis();
        final String filename = user.getUid()+"_"+time;
   
        StorageReference storageRef = storage.getReference();
        final StorageReference ImagesRef = storageRef.child("posts/"+filename+".jpg");
        imageView.setDrawingCacheEnabled(true);
        imageView.buildDrawingCache();

Gongcu

public class RecyclerViewAdapter_post extends RecyclerView.Adapter<RecyclerViewAdapter_post.ItemViewHolder> {
    private Activity activity;
    private RecyclerView recyclerView;
    private PostScrollToPositionListener postScrollToPositionListener; //to notify item change, so parent should know
    private SwipeRefreshLayout refreshLayout;

    /**
     * Constructor For PostActivity
     */
    public RecyclerViewAdapter_post(final Activity activity, FragmentManager fragmentManager, RecyclerView recyclerView, SwipeRefreshLayout refreshLayout) {

Gongcu

private void signUpRegex(final String email, final String password){
        //키보드 내리기
        View view = this.getCurrentFocus();
        if (view != null) {
            InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
            imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
        }

        String pwPattern = "^(?=.*\\d)(?=.*[~`!@#$%\\^&*()-])(?=.*[a-z])(?=.*[A-Z]).{9,12}$";
        Matcher matcher = Pattern.compile(pwPattern).matcher(password);

Gongcu

package com.example.healthtagram.fcm;

public class FCMpush {
    private static final MediaType mediaType = MediaType.parse("application/json; charset=utf-8");
    private static final String uri = "https://fcm.googleapis.com/fcm/send";
    private static final String serverKey = "AIzaSyD....";
    private Gson gson;
    private OkHttpClient httpClient;

    //싱글톤 패턴을 위해 생성사를 private으로 선언

Gongcu

public static Bitmap getCircledBitmap(Bitmap bitmap) {
    Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(output);
    final Paint paint = new Paint();
    final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());

    paint.setAntiAlias(true);
    canvas.drawARGB(0, 0, 0, 0);
    canvas.drawCircle(bitmap.getWidth() / 2, bitmap.getHeight() / 2, bitmap.getWidth() / 2, paint);
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));