JavaFX实现视频播放功能
一、前言最近使用javaFx写了个简朴的视频播放功能，可以实现打开本地视频播放。
二、实现
1.使用jdk8自带的javaFx包实现，首先定义一个类VideoPlayer。
代码如下：
import javafx.application.Application;
import javafx.application.Platform;
import javafx.beans.InvalidationListener;
import javafx.beans.property.Property;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.geometry.Rectangle2D;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.StackPane;
import javafx.scene.media.Media;
import javafx.scene.media.MediaException;
import javafx.scene.media.MediaPlayer;
import javafx.scene.media.MediaView;
import javafx.stage.FileChooser;
import javafx.stage.Screen;
import javafx.stage.Stage;
import javafx.util.Duration;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.nio.file.Paths;
import java.util.concurrent.atomic.AtomicBoolean;
public class VideoPlayer extends Application {
Button play,full,openFile;
MediaPlayer mediaPlayer;
MediaView mediaView;
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage primaryStage) throws MalformedURLException, URISyntaxException {
openFile=new Button();
openFile.setText("打开文件");
openFile.setTranslateX(-300.0);
openFile.setTranslateY(340.0);
// 将MediaView加入到布局容器
StackPane root = new StackPane();
// 创建场景
Scene scene = new Scene(root, 1000, 800);
root.getChildren().add(openFile);
primaryStage.setScene(scene);
primaryStage.show();
openFile.setOnMouseClicked(o->{
mediaView = new MediaView(mediaPlayer);
openFile(primaryStage);
// 加载播放图像
Image image = new Image(new File("image/play.png").toURI().toString());
ImageView imageView = new ImageView(image);
imageView.setFitHeight(45); // 设置图标大小
imageView.setFitWidth(45);
imageView.setPreserveRatio(true);
full=new Button();
play=new Button();
play.setBackground(null);
play.setTranslateX(0.0);
play.setTranslateY(340.0);
play.setGraphic(imageView);
play.setContentDisplay(ContentDisplay.GRAPHIC_ONLY);
// 创建MediaPlayer对象
mediaPlayer.setAutoPlay(false); // 设置自动播放
// 创建MediaView对象
mediaView.setFitWidth(990);
mediaView.setFitHeight(600);
mediaView.setSmooth(true);
// 将MediaView加入到布局容器
root.getChildren().add(mediaView);
root.getChildren().add(play);
root.getChildren().add(full);
// 创建场景
scene.setOnMouseEntered(m->{
if (!primaryStage.isFullScreen()) {
play.setVisible(true);
full.setVisible(true);
}
});
scene.setOnMouseExited(m->{
if (!primaryStage.isFullScreen()) {
play.setVisible(false);
full.setVisible(false);
}
});
// 创建进度条
ProgressBar progressBar = new ProgressBar(0);
progressBar.setStyle("-fx-height: 8;");
progressBar.setStyle("-fx-padding: -1;");
Slider timeSlider = new Slider(0,0,0);
// 当媒体元数据加载完成后，获取总播放时长
mediaPlayer.setOnReady(() -> {
Duration totalDuration = mediaPlayer.getTotalDuration();
timeSlider.setMax(totalDuration.toSeconds());
progressBar.progressProperty().bind(timeSlider.valueProperty().divide(totalDuration.toSeconds()));
System.out.println("总播放时长: " + totalDuration.toSeconds() + " 秒");
});
mediaPlayer.setOnPlaying(() -> {
Platform.runLater(()->{
if (timeSlider.isFocused()) {
return;
}
timeSlider.setValue(mediaPlayer.getCurrentTime().toSeconds());
});
});
timeSlider.setOnMouseReleased(e -> {
// 当拖动结束时更新进度条
timeSlider.setValue(mediaPlayer.getCurrentTime().toSeconds());
if (timeSlider.getValue()>=timeSlider.getMax()) {
play.setGraphic(imageView);
}
});
.........
2.实现的打开文件功能。
private void openFile(Stage primaryStage) {
FileChooser fileChooser = new FileChooser();
fileChooser.setTitle("打开文件");
fileChooser.getExtensionFilters().add(new FileChooser.ExtensionFilter("文件", "*.mp4","*.mp3","*.wav"));
File file = fileChooser.showOpenDialog(null);
if (file != null) {
try {
URI uri = Paths.get(file.getAbsolutePath()).toUri();
Media media = new Media(uri.toString());
if (mediaPlayer != null) {
mediaPlayer.dispose();
}
mediaPlayer = new MediaPlayer(media);
mediaView = new MediaView(mediaPlayer);
String mediaTitle = "player - " + file.getName();
//((Stage) mediaView.getScene().getWindow()).setTitle(mediaTitle);
primaryStage.setTitle(mediaTitle);
} catch (MediaException e) {
Alert alert = new Alert(Alert.AlertType.ERROR);
alert.setTitle("错误");
alert.setHeaderText("无法打开文件");
alert.setContentText("打开文件时发生错误。");
alert.showAndWait();
}
}
}
3.实现后的结果如下：
https://i-blog.csdnimg.cn/direct/9e222da40bc2461e8c6c74478a128b7d.png
https://i-blog.csdnimg.cn/direct/a57cffad31ef4c78a72d5fc8323611df.png
完整代码如下：
javaFX实现视频播放源码
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