如何將文件上傳到亞馬遜S3從Android

Question

嗨，我已經集成了這些代碼，使我能夠上傳文件，而不是照片選擇到AmazonS3，但對於某些部分，他們仍然是上傳圖像這樣的一部分，如「intent.setType（」image/「）;」* 請讓我知道是否可以更改這些代碼以使我的文件成功上傳到AmazonS3。非常感謝你。

package com.amazonaws.demo;

import java.net.URL; 
import java.util.Date; 

import com.amazonaws.demo.R; 

import com.amazonaws.auth.BasicAWSCredentials; 
import com.amazonaws.services.s3.AmazonS3Client; 
import com.amazonaws.services.s3.model.GeneratePresignedUrlRequest; 
import com.amazonaws.services.s3.model.PutObjectRequest; 
import com.amazonaws.services.s3.model.ResponseHeaderOverrides; 

import android.app.Activity; 
import android.app.AlertDialog; 
import android.content.DialogInterface; 
import android.content.Intent; 
import android.database.Cursor; 
import android.net.Uri; 
import android.os.Bundle; 
import android.provider.MediaStore; 
import android.view.View; 
import android.widget.Button; 

public class S3UploaderActivity extends Activity { 

private AmazonS3Client s3Client = new AmazonS3Client(new BasicAWSCredentials(Constants.ACCESS_KEY_ID, Constants.SECRET_KEY)); 

private Button selectFile = null; 
private Button showInBrowser = null; 

private static final int FILE_SELECTED = 1; 

/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

    selectFile = (Button) findViewById(R.id.select_file_button); 
    selectFile.setOnClickListener(new View.OnClickListener() { 

     public void onClick(View v) { 
      // Start the image picker. 
      Intent intent = new Intent(Intent.ACTION_GET_CONTENT); 
      intent.setType("image/*"); 
      startActivityForResult(intent, FILE_SELECTED); 
     } 
    }); 

    showInBrowser = (Button) findViewById(R.id.show_in_browser_button); 
    showInBrowser.setOnClickListener(new View.OnClickListener() { 

     public void onClick(View v) { 
      try { 
       // Ensure that the image will be treated as such. 
       ResponseHeaderOverrides override = new ResponseHeaderOverrides(); 
       override.setContentType("image/jpeg"); 

       // Generate the presigned URL. 
       Date expirationDate = new Date(System.currentTimeMillis() + 3600000); // Added an hour's worth of milliseconds to the current time. 
       GeneratePresignedUrlRequest urlRequest = new GeneratePresignedUrlRequest(Constants.getPictureBucket(), Constants.FILE_NAME); 
       urlRequest.setExpiration(expirationDate); 
       urlRequest.setResponseHeaders(override); 

       URL url = s3Client.generatePresignedUrl(urlRequest); 

       // Display in Browser. 
       startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url.toURI().toString()))); 
      } 
      catch (Exception exception) { 
       S3UploaderActivity.this.displayAlert("Browser Failure", exception.getMessage()); 
      } 
     } 
    }); 
} 


// This method is automatically called by the image picker when an image is selected. 
protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent) { 
    super.onActivityResult(requestCode, resultCode, imageReturnedIntent); 

    switch(requestCode) { 
    case FILE_SELECTED: 
     if (resultCode == RESULT_OK) { 
      // THe file location of the image selected. 
      Uri selectedImage = imageReturnedIntent.getData(); 
      String[] filePathColumn = {MediaStore.Images.Media.DATA}; 


      Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null); 
      cursor.moveToFirst(); 

      int columnIndex = cursor.getColumnIndex(filePathColumn[0]); 
      String filePath = cursor.getString(columnIndex); 
      cursor.close(); 

      // Put the image data into S3. 
      try { 
      s3Client.deleteBucket(Constants.getPictureBucket()); 

       PutObjectRequest por = new PutObjectRequest(Constants.getPictureBucket(), Constants.FILE_NAME, new java.io.File(filePath)); // Content type is determined by file extension. 
       s3Client.putObject(por); 
      } 
      catch (Exception exception) { 
       displayAlert("Upload Failure", exception.getMessage()); 
      } 
     } 
    } 
} 

// Display an Alert message for an error or failure. 
protected void displayAlert(String title, String message) { 
    AlertDialog.Builder confirm = new AlertDialog.Builder(this); 
    confirm.setTitle(title); 
    confirm.setMessage(message); 
    confirm.setNegativeButton("OK", new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialog, int which) { 
      S3UploaderActivity.this.finish(); 
     } 
    }); 
    confirm.show().show();     
} 

}

Answer 1

您可以使用此http://code.google.com/p/android-file-dialog/活動，並得到用戶選擇的文件。