谷歌硬盤在Android應用中的整合？

Question

我需要將文件上傳到Google驅動器，並查看/下載我在我的android應用程序中上傳的文件。如何以最簡單的方式執行此操作..？歡迎任何建議，示例代碼和解釋。提前感謝你。

PS：無需安裝Google雲端硬盤設備..

Answer 1

最簡單的方法就是按照Android quickstart guide for Drive

它解釋瞭如何構建一個Android應用程序，上傳的照片在不到10分鐘開車。

Answer 2

轉寄此，Complete Step by Step Guide

代碼只上傳（我仍然搞清楚如何瀏覽文件）：

package com.example.drivequickstart; 

import java.io.IOException; 
import java.text.SimpleDateFormat; 
import java.util.Date; 
import java.util.Locale; 

import android.accounts.AccountManager; 
import android.app.Activity; 
import android.content.Intent; 
import android.net.Uri; 
import android.os.Bundle; 
import android.os.Environment; 
import android.provider.MediaStore; 
import android.widget.Toast; 

import com.google.api.client.extensions.android.http.AndroidHttp; 
import com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential; 
import com.google.api.client.googleapis.extensions.android.gms.auth.UserRecoverableAuthIOException; 
import com.google.api.client.http.FileContent; 
import com.google.api.client.json.gson.GsonFactory; 
import com.google.api.services.drive.Drive; 
import com.google.api.services.drive.DriveScopes; 
import com.google.api.services.drive.model.File; 

public class MainActivity extends Activity { 
    static final int REQUEST_ACCOUNT_PICKER = 1; 
    static final int REQUEST_AUTHORIZATION = 2; 
    static final int CAPTURE_IMAGE = 3; 

    private static Uri fileUri; 
    private static Drive service; 
    private GoogleAccountCredential credential; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     credential = GoogleAccountCredential.usingOAuth2(this, DriveScopes.DRIVE); 
     startActivityForResult(credential.newChooseAccountIntent(), REQUEST_ACCOUNT_PICKER); 
    } 

    @Override 
    protected void onActivityResult(final int requestCode, final int resultCode, final Intent data) { 
     switch (requestCode) { 
     case REQUEST_ACCOUNT_PICKER: 
      if (resultCode == RESULT_OK && data != null && data.getExtras() != null) { 
       String accountName = data.getStringExtra(AccountManager.KEY_ACCOUNT_NAME); 
       if (accountName != null) { 
        credential.setSelectedAccountName(accountName); 
        service = getDriveService(credential); 
        startCameraIntent(); 
       } 
      } 
      break; 
     case REQUEST_AUTHORIZATION: 
      if (resultCode == Activity.RESULT_OK) { 
       saveFileToDrive(); 
      } else { 
       startActivityForResult(credential.newChooseAccountIntent(), REQUEST_ACCOUNT_PICKER); 
      } 
      break; 
     case CAPTURE_IMAGE: 
      if (resultCode == Activity.RESULT_OK) { 
       saveFileToDrive(); 
      } 
     } 
    } 

    private void startCameraIntent() { 
     String mediaStorageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getPath(); 
     String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(new Date()); 
     fileUri = Uri.fromFile(new java.io.File(mediaStorageDir + java.io.File.separator + "IMG_" + timeStamp + ".jpg")); 

     Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
     cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); 
     startActivityForResult(cameraIntent, CAPTURE_IMAGE); 
    } 

    private void saveFileToDrive() { 
     Thread t = new Thread(new Runnable() { 
      @Override 
      public void run() { 
       try { 
        // File's binary content 
        java.io.File fileContent = new java.io.File(fileUri.getPath()); 
        FileContent mediaContent = new FileContent("image/jpeg", fileContent); 

        // File's metadata. 
        File body = new File(); 
        body.setTitle(fileContent.getName()); 
        body.setMimeType("image/jpeg"); 

        File file = service.files().insert(body, mediaContent).execute(); 
        if (file != null) { 
         showToast("Photo uploaded: " + file.getTitle()); 
         startCameraIntent(); 
        } 
       } catch (UserRecoverableAuthIOException e) { 
        startActivityForResult(e.getIntent(), REQUEST_AUTHORIZATION); 
       } catch (IOException e) { 
        e.printStackTrace(); 
       } 
      } 
     }); 
     t.start(); 
    } 

    private Drive getDriveService(GoogleAccountCredential credential) { 
     return new Drive.Builder(AndroidHttp.newCompatibleTransport(), new GsonFactory(), credential).build(); 
    } 

    public void showToast(final String toast) { 
     runOnUiThread(new Runnable() { 
      @Override 
      public void run() { 
       Toast.makeText(getApplicationContext(), toast, Toast.LENGTH_SHORT).show(); 
      } 
     }); 
    } 
} 

Answer 3

的谷歌驅動器是通過谷歌雲端硬盤API訪問，樣品演示版由Android人員在下面的路徑創建，這是非常有用的，並提供了所有功能的示例。請按照以下鏈接 Git hub demo for Google Drive API