你的位置：首页 > 业界 > unity+android：打开安卓文件浏览器，并获取选择文件真实路径

unity+android：打开安卓文件浏览器，并获取选择文件真实路径

业界 admin 2025-02-21 34浏览 0评论

java代码

package com.luo.yikun.getfilepath;

import android.app.Activity;
import android.app.Fragment;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import com.unity3d.player.UnityPlayer;
import java.io.File;

public class GetFilePath extends Fragment {
String m_gameObjectName;
String m_funcName;

private Context unityContext;
private Activity unityActivity;

private static final String TAG = "GetFilePath";

public void UnityFunc(String gameObjectName, String funcName)
{
m_gameObjectName = gameObjectName;
m_funcName = funcName;
}

private static GetFilePath Instance = null;
//private String gameObjectName;

public static GetFilePath GetInstance()
{
if(Instance == null)
{
Instance = new GetFilePath();
//Instance.gameObjectName = gameObject;
Instance.unityActivity = UnityPlayer.currentActivity;
if (Instance.unityActivity == null)
{
Instance.CallUnity("Instance.unityActivity == null");
}
Instance.unityContext = Instance.unityActivity.getBaseContext();
if (Instance.unityContext == null)
{
Instance.CallUnity("Instance.unityContext == null");
}
UnityPlayer.currentActivity.getFragmentManager().beginTransaction().add(Instance, TAG)mit();

}
return Instance;
}

@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setRetainInstance(true); // 这一句很重要，保存对该Fragment的引用，防止在旋转屏幕等操作时时丢失引用（Fragment隶属于Activity）
}

// 调用 Unity
// gameObjectName 为接受消息的Unity 中 GameObject 的名字
// functionName 为接受消息的GameObject 挂载 C# 脚本中的函数名
// _content 为发送给Unity 的内容
public void CallUnity( String _content)
{
UnityPlayer.UnitySendMessage(m_gameObjectName, m_funcName, _content);
}

public void fileBrower()
{
Intent myintent = new Intent(Intent.ACTION_GET_CONTENT);
myintent.setType("*/*");
myintent.addCategory(Intent.CATEGORY_OPENABLE);
startActivityForResult(Intent.createChooser(myintent, "选择文件"), 1);
}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
if (resultCode != Activity.RESULT_OK) {
super.onActivityResult(requestCode, resultCode, data);
return;
}
if (requestCode == 1) {
Uri uri = data.getData();
String path = getPath(unityContext, uri);
if (path != null) {
File file = new File(path);
if (file.exists()) {
String upLoadFilePath = file.toString();
String upLoadFileName = file.getName();
CallUnity(upLoadFilePath);
}
}

}
super.onActivityResult(requestCode, resultCode, data);
}

public String getPath(final Context context, final Uri uri) {

final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;

// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
// Log.i(TAG,"isExternalStorageDocument***"+uri.toString());
// Log.i(TAG,"docId***"+docId);
// 以下是打印示例：
// isExternalStorageDocument***content://com.android.externalstorage.documents/document/primary%3ATset%2FROC2018421103253.wav
// docId***primary:Test/ROC2018421103253.wav
final String[] split = docId.split(":");
final String type = split[0];

if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
// Log.i(TAG,"isDownloadsDocument***"+uri.toString());
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(
Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));

return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
else if (isMediaDocument(uri)) {
// Log.i(TAG,"isMediaDocument***"+uri.toString());
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];

Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}

final String selection = "_id=?";
final String[] selectionArgs = new String[]{split[1]};

return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
// Log.i(TAG,"content***"+uri.toString());
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
// Log.i(TAG,"file***"+uri.toString());
return uri.getPath();
}
return null;
}

/**
* Get the value of the data column for this Uri. This is useful for
* MediaStore Uris, and other file-based ContentProviders.
*
* @param context The context.
* @param uri The Uri to query.
* @param selection (Optional) Filter used in the query.
* @param selectionArgs (Optional) Selection arguments used in the query.
* @return The value of the _data column, which is typically a file path.
*/
public String getDataColumn(Context context, Uri uri, String selection,
String[] selectionArgs) {

Cursor cursor = null;
final String column = "_data";
final String[] projection = {column};

try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
null);
if (cursor != null && cursor.moveToFirst()) {
final int column_index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(column_index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}

public boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}

public boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}

public boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
}

AndroidMainfest文件增加权限

demo下载
https://pan.baidu/s/16KOk1Nt7Eri4JPsXsHwm7A
demo是早期的，可能跟上面的不同，但是测试过unity打包出apk能浏览到文件的真实路径
————————————————

原文链接：https://blog.csdn/luoyikun/article/details/82953317