ssaurel

private boolean checkPermission(String permission) {
   return ContextCompat.checkSelfPermission(this, permission) == PackageManager.PERMISSION_GRANTED;
}

ssaurel

ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CALL_PHONE}, MAKE_CALL_PERMISSION_REQUEST_CODE);

ssaurel

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    switch(requestCode) {
        case MAKE_CALL_PERMISSION_REQUEST_CODE :
            if (grantResults.length > 0 && (grantResults[0] == PackageManager.PERMISSION_GRANTED)) {
                dial.setEnabled(true);
                Toast.makeText(this, "You can call the number by clicking on the button", Toast.LENGTH_SHORT).show();
            }
            return;
    }

ssaurel

package com.ssaurel.phonetut;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;

ssaurel

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:id="@+id/activity_main"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:paddingBottom="@dimen/activity_vertical_margin"
 android:paddingTop="@dimen/activity_vertical_margin"
 tools:context="com.ssaurel.slotmachine.MainActivity"
 android:background="#FFFFFF">

ssaurel

public class Wheel extends Thread {

 interface WheelListener {
  void newImage(int img);
 }

 private static int[] imgs = {R.drawable.slot1, R.drawable.slot2, R.drawable.slot3, R.drawable.slot4,
    R.drawable.slot5, R.drawable.slot6};
 public int currentIndex;
 private WheelListener wheelListener;

ssaurel

public class MainActivity extends AppCompatActivity {

 private TextView msg;
 private ImageView img1, img2, img3;
 private Wheel wheel1, wheel2, wheel3;
 private Button btn;
 private boolean isStarted;

 public static final Random RANDOM = new Random();

ssaurel

package com.ssaurel.morseconverter;

import java.util.HashMap;

public class MorseCode {

    static String[] ALPHA = { "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r",
			"s", "t", "u", "v", "w", "x", "y", "z", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "!", ",", "?",
			".", "'" };
    static String[] MORSE = { ".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---", "-.-", ".-..",

ssaurel

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"

ssaurel

package com.ssaurel.morseconverter;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {