hilfritz

    property?.let { 
        //if 'property' is not null
        fancyPrint(it) //'it' refers to 'property'
    } ?: run {
        //'else' clause - property is null
        showError() 
    }

hilfritz

//MODEL CLASS

interface Model{
        void init(Gson gson);
        public Single<List<ImgAlbum>> getPhotos();
    }
    
 /**
 * @author Hilfritz Camallere on 6/11/18
 */

hilfritz

use rxPermissions
https://stackoverflow.com/questions/32854169/does-checking-the-never-ask-again-box-when-asking-for-a-runtime-permission-disab


final String[] objects = new String[]{Manifest.permission.READ_PHONE_STATE, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION};



        findViewById(R.id.enableCamera).setOnClickListener(
                view -> rxPermissions

hilfritz

 public static final ArrayList<DateTime> getAllDateTimeInMonth(int month, int year, String timezoneID){
        Log.d(TAG, "getAllDateTimeInMonth: month:"+month);

        DateTimeZone dateTimeZone = DateTimeZone.forID(timezoneID);
        DateTime dateTime = new DateTime(year, month, 1,0, 0, dateTimeZone);

        Log.d(TAG, "getAllDateTimeInMonth: month:"+month+" year:"+year);


        ArrayList<DateTime> daysInMonthLabels = new ArrayList<DateTime>();

hilfritz

//from https://gist.github.com/jk2K/67502e1744e081dcfef5

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.support.annotation.NonNull;
import android.util.AttributeSet;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.ScaleGestureDetector;

hilfritz

//issue happens one pre lolipop devices
//https://stackoverflow.com/questions/27083091/recyclerview-inside-scrollview-is-not-working

//must use NestedScrollView

fix: 
mRecyclerView.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
    @Override
    public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
        int action = e.getAction();

hilfritz

//https://stackoverflow.com/questions/25457737/how-to-create-an-observable-from-onclick-event-android

Observable<View> clickEventObservable = Observable.create(new Observable.OnSubscribe<View>() {
        @Override
        public void call(final Subscriber<? super View> subscriber) {
            viewIWantToMonitorForClickEvents.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if (subscriber.isUnsubscribed()) return;
                    subscriber.onNext(v);

hilfritz

1. Find the longest String in an array of Strings


     //ANSWER:
 	public String getLongestStringInArray(String[] array){

        int index = 0;
        int elementLength = array[0].length();
        int arraySize = array.length;
        for(int i=1; i< arraySize; i++) {

hilfritz

 override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        setStyle(DialogFragment.STYLE_NORMAL, android.R.style.Theme_Black_NoTitleBar_Fullscreen)
    }

hilfritz

//https://stackoverflow.com/questions/7189948/full-screen-dialogfragment-in-android
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        //val dialog = super.onCreateDialog(savedInstanceState)

        // request a window without the title
        //dialog.window!!.requestFeature(Window.FEATURE_NO_TITLE)

        // the content
        val root = RelativeLayout(activity)
        root.layoutParams = ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)