Activity

package com.alexandra.movies;

import android.content.res.Resources;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

import java.util.Random;

public class MainActivity extends AppCompatActivity {
    TextView resultMovieView;

    Resources res;
    String[] movies;
    String[] shuffledMovies;
    int movieIndex;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        resultMovieView = findViewById(R.id.result);

        res = getResources();
        movies = res.getStringArray(R.array.movies);
        shuffledMovies = shuffleMovies(movies);
        movieIndex = 0;
    }

    public void beginMovies(View v) {
        shuffledMovies = shuffleMovies(movies);
        movieIndex = 0;
        resultMovieView.setText("");
    }

    public void showMovie(View v) {
        if (movieIndex >= shuffledMovies.length) {
            resultMovieView.setText("Фильмы закончились!");
            return;
        }
        String movie = shuffledMovies[movieIndex++];
        resultMovieView.setText(movie);
    }

    public String[] shuffleMovies(String[] movies) {
        String tempMovie;

        Random rnd = new Random(System.currentTimeMillis());
        int randIndex;

        for (int i = 0; i < movies.length; i++) {
            randIndex = rnd.nextInt(movies.length - 1);

            tempMovie = movies[0];
            movies[0] = movies[randIndex];
            movies[randIndex]= tempMovie;
        }
        return movies;
    }
}