如何解析ionic应用程序中的文件路径

import { File } from '@ionic-native/file/ngx';
import { Platform } from '@ionic/angular';

constructor(private file: File, private platform: Platform) {}

// 解析文件路径
resolveFilePath(filePath: string): Promise<string> {
  return new Promise<string>((resolve, reject) => {
    // 获取文件系统根目录
    const rootDirectory = this.platform.is('ios') ? this.file.documentsDirectory : this.file.dataDirectory;

    // 解析文件路径
    this.file.resolveDirectoryUrl(rootDirectory)
      .then(directoryEntry => {
        // 处理相对路径
        const resolvedPath = this.file.resolve(directoryEntry.nativeURL, filePath);

        resolve(resolvedPath);
      })
      .catch(error => {
        reject(error);
      });
  });
}

// 使用解析后的路径
processFilePath(filePath: string): void {
  this.resolveFilePath(filePath)
    .then(resolvedPath => {
      // 在这里可以使用解析后的路径进行其他操作
      console.log('Resolved file path:', resolvedPath);
    })
    .catch(error => {
      console.error('Error resolving file path:', error);
    });
}