app/src/main/java/com/example/multimedia/VideoPlayerActivity.java - master - ap1k/MultimediaJavaAndroid

app/src/main/java/com/example/multimedia/VideoPlayerActivity.java
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11 май 2025, 13:58
11 май 2025, 13:584ffd117
package com.example.multimedia;

import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.view.View;
import android.widget.MediaController;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.VideoView;

import androidx.appcompat.app.AppCompatActivity;

import com.google.android.material.floatingactionbutton.FloatingActionButton;

public class VideoPlayerActivity extends AppCompatActivity {

    private VideoView videoView;
    private TextView tvVideoCurrentTime, tvVideoTotalTime;
    private SeekBar seekBarVideo;
    private FloatingActionButton fabPlayVideo, fabPauseVideo, fabStopVideo;
    
    private Handler handler = new Handler(Looper.getMainLooper());
    private Runnable runnable;
    
    // Sample video resource
    private static final String VIDEO_SAMPLE = "comp1";
    private int currentPosition = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_video_player);
        
        // Initialize views
        videoView = findViewById(R.id.videoView);
        tvVideoCurrentTime = findViewById(R.id.tvVideoCurrentTime);
        tvVideoTotalTime = findViewById(R.id.tvVideoTotalTime);
        seekBarVideo = findViewById(R.id.seekBarVideo);
        fabPlayVideo = findViewById(R.id.fabPlayVideo);
        fabPauseVideo = findViewById(R.id.fabPauseVideo);
        fabStopVideo = findViewById(R.id.fabStopVideo);
        
        // Setup video view
        setupVideoView();
        
        // Setup button click listeners
        fabPlayVideo.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                playVideo();
            }
        });
        
        fabPauseVideo.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                pauseVideo();
            }
        });
        
        fabStopVideo.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                stopVideo();
            }
        });
        
        // Setup SeekBar change listener
        seekBarVideo.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                if (fromUser) {
                    videoView.seekTo(progress);
                }
            }
            
            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {
                pauseVideo();
            }
            
            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {
                playVideo();
            }
        });
    }
    
    /**
     * Setup the VideoView with the video resource
     */
    private void setupVideoView() {
        try {
            // Get the resource ID
            int rawId = getResources().getIdentifier(VIDEO_SAMPLE, "raw", getPackageName());
            
            if (rawId == 0) {
                // Ресурс не найден
                Toast.makeText(this, 
                    "Видеофайл " + VIDEO_SAMPLE + " не найден. Пожалуйста, убедитесь, что файл находится в res/raw директории.", 
                    Toast.LENGTH_LONG).show();
                disableVideoControls();
                return;
            }
            
            // Set the video path
            Uri videoUri = Uri.parse("android.resource://" + getPackageName() + "/" + rawId);
            videoView.setVideoURI(videoUri);
            
            // Добавим MediaController для стандартного управления видео
            MediaController mediaController = new MediaController(this);
            mediaController.setAnchorView(videoView);
            videoView.setMediaController(mediaController);
            
            // Setup completion listener
            videoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
                @Override
                public void onCompletion(MediaPlayer mp) {
                    stopVideo();
                }
            });
            
            // Setup prepared listener to get video duration
            videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                @Override
                public void onPrepared(MediaPlayer mp) {
                    int totalDuration = videoView.getDuration();
                    seekBarVideo.setMax(totalDuration);
                    tvVideoTotalTime.setText(formatTime(totalDuration));
                }
            });
            
            // Обработка ошибок
            videoView.setOnErrorListener(new MediaPlayer.OnErrorListener() {
                @Override
                public boolean onError(MediaPlayer mp, int what, int extra) {
                    Toast.makeText(VideoPlayerActivity.this, 
                        "Ошибка воспроизведения видео: " + what, 
                        Toast.LENGTH_LONG).show();
                    disableVideoControls();
                    return true; // Ошибка обработана
                }
            });
        } catch (Exception e) {
            Toast.makeText(this,
                "Ошибка при настройке видеоплеера: " + e.getMessage(),
                Toast.LENGTH_LONG).show();
            disableVideoControls();
        }
    }
    
    /**
     * Disable video controls when video is not available
     */
    private void disableVideoControls() {
        fabPlayVideo.setEnabled(false);
        fabPauseVideo.setEnabled(false);
        fabStopVideo.setEnabled(false);
        seekBarVideo.setEnabled(false);
        tvVideoCurrentTime.setText("0:00");
        tvVideoTotalTime.setText("0:00");
    }
    
    /**
     * Play the video
     */
    private void playVideo() {
        try {
            if (!videoView.isPlaying()) {
                videoView.start();
                updateSeekBar();
            }
        } catch (Exception e) {
            Toast.makeText(this, 
                "Ошибка воспроизведения: " + e.getMessage(), 
                Toast.LENGTH_SHORT).show();
        }
    }
    
    /**
     * Pause the video
     */
    private void pauseVideo() {
        try {
            if (videoView.isPlaying()) {
                videoView.pause();
                currentPosition = videoView.getCurrentPosition();
                handler.removeCallbacks(runnable);
            }
        } catch (Exception e) {
            Toast.makeText(this, 
                "Ошибка при паузе: " + e.getMessage(), 
                Toast.LENGTH_SHORT).show();
        }
    }
    
    /**
     * Stop the video
     */
    private void stopVideo() {
        try {
            videoView.stopPlayback();
            videoView.resume();
            currentPosition = 0;
            handler.removeCallbacks(runnable);
            seekBarVideo.setProgress(0);
            tvVideoCurrentTime.setText("0:00");
            setupVideoView();
        } catch (Exception e) {
            Toast.makeText(this, 
                "Ошибка при остановке: " + e.getMessage(), 
                Toast.LENGTH_SHORT).show();
        }
    }
    
    /**
     * Update the SeekBar position and current time text
     */
    private void updateSeekBar() {
        try {
            // Get current position
            currentPosition = videoView.getCurrentPosition();
            
            // Update SeekBar and current time text
            seekBarVideo.setProgress(currentPosition);
            tvVideoCurrentTime.setText(formatTime(currentPosition));
            
            // Continue updating
            runnable = new Runnable() {
                @Override
                public void run() {
                    updateSeekBar();
                }
            };
            
            handler.postDelayed(runnable, 1000);
        } catch (Exception e) {
            // Игнорируем ошибки при обновлении
        }
    }
    
    /**
     * Format milliseconds to m:ss format
     */
    private String formatTime(int milliseconds) {
        int seconds = milliseconds / 1000;
        int minutes = seconds / 60;
        seconds = seconds % 60;
        return String.format("%d:%02d", minutes, seconds);
    }
    
    @Override
    protected void onPause() {
        super.onPause();
        if (videoView != null && videoView.isPlaying()) {
            pauseVideo();
        }
    }
    
    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (handler != null && runnable != null) {
            handler.removeCallbacks(runnable);
        }
    }
}