다운로드 한 이미지를 SD 카드 경로에 저장할 수 없습니다. 경로

Question

OutputStream 경로 파일을 저장할 수 없습니다.

package com.example;

import java.io.BufferedInputStream; 
import java.io.FileOutputStream; 
import java.io.InputStream; 
import java.io.OutputStream; 
import java.net.URL; 
import java.net.URLConnection; 

import android.app.Activity; 
import android.app.Dialog; 
import android.app.ProgressDialog; 
import android.os.AsyncTask; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 

public class download extends Activity { 

    public static final int DIALOG_DOWNLOAD_PROGRESS = 0; 
    private Button startBtn; 
    private ProgressDialog mProgressDialog; 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     startBtn = (Button)findViewById(R.id.startBtn); 
     startBtn.setOnClickListener(new OnClickListener(){ 
      public void onClick(View v) { 
       startDownload(); 
      } 
     }); 
    } 

    private void startDownload() { 
     String url = "http://farm1.static.flickr.com/114/298125983_0e4bf66782_b.jpg"; 
     new DownloadFileAsync().execute(url); 
    } 
    @Override 
    protected Dialog onCreateDialog(int id) { 
     switch (id) { 
     case DIALOG_DOWNLOAD_PROGRESS: 
      mProgressDialog = new ProgressDialog(this); 
      mProgressDialog.setMessage("Downloading file.."); 
      mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); 
      mProgressDialog.setCancelable(false); 
      mProgressDialog.show(); 
      return mProgressDialog; 
     default: 
      return null; 
     } 
    } 

class DownloadFileAsync extends AsyncTask<String, String, String> { 

    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     showDialog(DIALOG_DOWNLOAD_PROGRESS); 
    } 

    @Override 
    protected String doInBackground(String... aurl) { 
     int count; 

    try { 

    URL url = new URL(aurl[0]); 
    URLConnection conexion = url.openConnection(); 
    conexion.connect(); 

    int lenghtOfFile = conexion.getContentLength(); 
    Log.d("ANDRO_ASYNC", "Lenght of file: " + lenghtOfFile); 

    InputStream input = new BufferedInputStream(url.openStream()); 
    OutputStream output = new FileOutputStream("/sdcard/some_photo_from_gdansk_poland.jpg"); 

    byte data[] = new byte[1024]; 

    long total = 0; 

     while ((count = input.read(data)) != -1) { 
      total += count; 
      publishProgress(""+(int)((total*100)/lenghtOfFile)); 
      output.write(data, 0, count); 
     } 

     output.flush(); 
     output.close(); 
     input.close(); 
    } catch (Exception e) {} 
    return null; 

    } 
    protected void onProgressUpdate(String... progress) { 
     Log.d("ANDRO_ASYNC",progress[0]); 
     mProgressDialog.setProgress(Integer.parseInt(progress[0])); 
    } 

    @Override 
    protected void onPostExecute(String unused) { 
     dismissDialog(DIALOG_DOWNLOAD_PROGRESS); 
    } 
} 
} 


Permission: 
    <uses-permission android:name="android.permission.INTERNET"/> 

Answer 1

내가 그것을 발견 ..

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>