155 lines
4.3 KiB
C#
155 lines
4.3 KiB
C#
using System;
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using UnityEngine;
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/// <summary>
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/// Android文件选择器 - 调用Android原生文件选择器
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/// </summary>
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public class AndroidFilePicker : MonoBehaviour
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{
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public static AndroidFilePicker Instance { get; private set; }
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// 回调事件
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public event Action<string, string, byte[]> OnFileSelected; // 文件路径, 文件名, 文件数据
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public event Action OnFileSelectCanceled;
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public event Action<string> OnError;
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private AndroidJavaClass _filePickerClass;
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private void Awake()
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{
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if (Instance == null)
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{
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Instance = this;
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DontDestroyOnLoad(gameObject);
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}
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else
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{
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Destroy(gameObject);
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}
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}
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private void OnDestroy()
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{
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if (Instance == this)
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{
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Instance = null;
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}
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}
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/// <summary>
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/// 打开文件选择器
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/// </summary>
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/// <param name="mimeTypes">可选的MIME类型过滤器，如 "application/octet-stream"</param>
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public void PickFile(string[] mimeTypes = null)
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{
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#if UNITY_ANDROID && !UNITY_EDITOR
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Debug.Log("[FILE-PICKER] [CS] PickFile() 被调用");
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try
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{
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if (_filePickerClass == null)
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{
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Debug.Log("[FILE-PICKER] [CS] 初始化 FilePicker Java类...");
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_filePickerClass = new AndroidJavaClass("com.unity.filepicker.FilePicker");
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Debug.Log("[FILE-PICKER] [CS] FilePicker Java类初始化成功");
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}
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// 创建回调代理
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Debug.Log("[FILE-PICKER] [CS] 创建回调代理...");
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FilePickerCallbackProxy callbackProxy = new FilePickerCallbackProxy(this);
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Debug.Log("[FILE-PICKER] [CS] 回调代理创建成功");
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// 调用Java方法
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Debug.Log("[FILE-PICKER] [CS] 调用Java方法 pickFile...");
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_filePickerClass.CallStatic("pickFile", mimeTypes, callbackProxy);
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Debug.Log("[FILE-PICKER] [CS] 打开文件选择器成功");
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}
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catch (Exception e)
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{
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Debug.LogError($"[FILE-PICKER] [CS] 打开文件选择器失败: {e.Message}\n{e.StackTrace}");
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OnError?.Invoke($"打开文件选择器失败: {e.Message}");
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}
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#else
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Debug.LogWarning("[FILE-PICKER] [CS] 仅在Android平台可用");
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OnError?.Invoke("文件选择器仅在Android平台可用");
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#endif
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}
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/// <summary>
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/// 从Unity接收文件选择结果
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/// </summary>
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public void OnFileSelectedFromJava(string filePath, string fileName, byte[] fileData)
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{
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Debug.Log($"[FILE-PICKER] [CS] 选择文件成功: {fileName}, 大小: {fileData?.Length ?? 0}");
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// 在主线程执行回调
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Loom.QueueOnMainThread(() =>
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{
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OnFileSelected?.Invoke(filePath, fileName, fileData);
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});
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}
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/// <summary>
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/// 从Unity接收取消事件
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/// </summary>
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public void OnFileSelectCanceledFromJava()
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{
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Debug.Log("[FILE-PICKER] [CS] 用户取消选择");
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Loom.QueueOnMainThread(() =>
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{
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OnFileSelectCanceled?.Invoke();
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});
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}
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/// <summary>
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/// 从Unity接收错误
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/// </summary>
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public void OnErrorFromJava(string error)
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{
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Debug.LogError($"[FILE-PICKER] [CS] 错误: {error}");
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Loom.QueueOnMainThread(() =>
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{
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OnError?.Invoke(error);
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});
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}
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}
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/// <summary>
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/// 文件选择器回调代理 - 用于Java到C#的回调
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/// </summary>
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public class FilePickerCallbackProxy : AndroidJavaProxy
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{
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private AndroidFilePicker _picker;
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public FilePickerCallbackProxy(AndroidFilePicker picker) : base("com.unity.filepicker.FilePicker$FilePickerCallback")
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{
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_picker = picker;
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}
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/// <summary>
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/// 文件选择成功回调
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/// </summary>
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public void onFileSelected(string filePath, string fileName, byte[] fileData)
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{
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_picker?.OnFileSelectedFromJava(filePath, fileName, fileData);
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}
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/// <summary>
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/// 用户取消回调
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/// </summary>
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public void onFileSelectCanceled()
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{
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_picker?.OnFileSelectCanceledFromJava();
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}
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/// <summary>
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/// 错误回调
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/// </summary>
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public void onError(string error)
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{
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_picker?.OnErrorFromJava(error);
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}
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}
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