HarmonyOS Next基于 File Access Framework 的用户文件访问与权限控制

"abilities": [
  {
    "name": "EntryAbility",
    "skills": [
      {
        "actions": [
          "ohos.arkui.intent.action.CHOOSE"
        ],
        "uris": [
          {
            "scheme": "file",
            "host": "*",
            "path": "/storage/*"
          }
        ]
      },
      {
        "actions": [
          "ohos.arkui.intent.action.SAVE"
        ],
        "uris": [
          {
            "scheme": "file",
            "host": "*",
            "path": "/storage/*"
          }
        ]
      }
    ]
  }
]

import { fileAccess } from '@ohos.fileAccess';
import { Want } from '@ohos.arkui.ability';
export default class EntryAbility extends Ability {
  onWindowStageCreate(windowStage: WindowStage) {
    const.wantAgent = wantAgent.createWantAgent();
    const chooseIntent = {
      action: 'ohos.arkui.intent.action.CHOOSE',
      entities: ['image/*'],
      type: 'image/*'
    };
    const chooseWant = wantAgent.createWant(chooseIntent);
    this.context.startAbility(chooseWant, (result) => {
      if (result) {
        const uri = chooseWant.response.result;
        // 获取图片属性
        fileAccess.getFileInfo(uri, (error, fileInfo) => {
          if (error) {
            console.error('Failed to get file info:', error);
          } else {
            console.log('File info:', fileInfo);
          }
        });
      } else {
        console.log('Failed to choose image');
      }
    });
  }
}

import { fileAccess } from '@ohos.fileAccess';
import { Want } from '@ohos.arkui.ability';
export default class EntryAbility extends Ability {
  onWindowStageCreate(windowStage: WindowStage) {
    const.wantAgent = wantAgent.createWantAgent();
    const saveIntent = {
      action: 'ohos.arkui.intent.action.SAVE',
      type: 'text/plain'
    };
    const saveWant = wantAgent.createWant(saveIntent);
    this.context.startAbility(saveWant, (result) => {
      if (result) {
        const uri = saveWant.response.result;
        // 保存文档内容
        fileAccess.saveFile(uri, 'Hello, World!', (error) => {
          if (error) {
            console.error('Failed to save file:', error);
          } else {
            console.log('File saved successfully');
          }
        });
      } else {
        console.log('Failed to save document');
      }
    });
  }
}

import { fileAccess } from '@ohos.fileAccess';
export default class EntryAbility extends Ability {
  onWindowStageCreate(windowStage: WindowStage) {
    const filesDir = this.context.filesDir;
    // 创建目录
    fileAccess.createDir(filesDir + '/newDir', (error) => {
      if (error) {
        console.error('Failed to create directory:', error);
      } else {
        console.log('Directory created successfully');
      }
    });
    // 删除文件
    fileAccess.deleteFile(filesDir + '/test.txt', (error) => {
      if (error) {
        console.error('Failed to delete file:', error);
      } else {
        console.log('File deleted successfully');
      }
    });
  }
}