Android Q:如何从特定目录获取图片列表

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import java.io.File;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private static final int REQUEST_CODE = 100;
    private static final String[] PERMISSIONS = {Manifest.permission.READ_EXTERNAL_STORAGE};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
            if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
                ActivityCompat.requestPermissions(this, PERMISSIONS, REQUEST_CODE);
            } else {
                getImagesFromDirectory(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES));
            }
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == REQUEST_CODE) {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                getImagesFromDirectory(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES));
            }
        }
    }

    private void getImagesFromDirectory(File directory) {
        if (directory.exists() && directory.isDirectory()) {
            File[] files = directory.listFiles((dir, name) -> name.endsWith(".jpg") || name.endsWith(".png"));
            if (files != null) {
                List<String> imagePaths = new ArrayList<>();
                for (File file : files) {
                    imagePaths.add(file.getAbsolutePath());
                }
                // 处理图片路径列表
            }
        }
    }
}