Unity 3d多按钮点击播放视频求助：求单按钮交互示例

Hey there, let's break this down step by step since you're new to Unity—no need to overcomplicate things! I'll walk you through a complete single-button example that ties a UI button to a Video Player, including setting up the click listener and getting your video to play in landscape mode.

First, let's get the basic objects in place:

• Right-click in the Hierarchy window → UI → Button - TextMeshPro (or just Button if you don't have TextMeshPro installed). Rename it PlayMyVideoButton so it's easy to find.
• Next, add a Video Player component: Right-click in the Hierarchy → Video → Video Player, and name this object VideoPlayer.
• To display the video, add a RawImage as the output target: Right-click under the VideoPlayer object → UI → RawImage, name it VideoDisplay. Drag this RawImage into the Target Texture field of the Video Player component—Unity will automatically create a Render Texture for you here.

To make the video play in a landscape view:

• Select the VideoDisplay RawImage, adjust its RectTransform to stretch across the screen horizontally. Use the anchor presets (click the square icon in the RectTransform section) to select "Stretch" for both width and height, then tweak the offsets if needed to fit your desired landscape ratio.
• We'll add code later to force the game to switch to landscape orientation when the button is clicked.

Create a new C# script named VideoButtonHandler and paste this code:

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Video;

public class VideoButtonHandler : MonoBehaviour
{
    // Assign these references in the Inspector panel
    public Button playVideoButton;
    public VideoPlayer videoPlayer;
    public string targetVideoURL; // Example: "https://your-video-host.com/your-video.mp4"

    void Start()
    {
        // Attach the click event listener to the button
        playVideoButton.onClick.AddListener(PlaySelectedVideo);
    }

    void PlaySelectedVideo()
    {
        // Force screen to landscape mode (optional but recommended)
        Screen.orientation = ScreenOrientation.LandscapeLeft;

        // Stop any currently playing video to avoid conflicts
        videoPlayer.Stop();

        // Set the new video URL
        videoPlayer.url = targetVideoURL;

        // Prepare the video (loads it in the background) and start playing
        videoPlayer.Prepare();
        videoPlayer.Play();
    }
}

• Create an empty GameObject in the Hierarchy named VideoController, then attach the VideoButtonHandler script to it.
• Drag your PlayMyVideoButton from the Hierarchy into the Play Video Button field of the script.
• Drag your VideoPlayer object into the Video Player field.
• Enter your video's URL in the Target Video URL field (for local files, use a path like file:///C:/YourProject/StreamingAssets/MyVideo.mp4 on Windows, or adjust for Mac/Linux).

Enter Play Mode, click your button—your video should start playing in the RawImage, and the screen should switch to landscape automatically.

• If the video won't play, double-check the URL works in a browser first.
• Ensure your Video Player's Source setting is set to URL (not Video Clip).
• For local videos, place them in the StreamingAssets folder of your project (create it if it doesn't exist) and use Application.streamingAssetsPath + "/MyVideo.mp4" as the URL for better compatibility.

内容的提问来源于stack exchange，提问作者andrew