Bild auf FTP in Android hochladen mit lib SimpleFTP

Question

Ich möchte Datei auf FTP hochladen. Ich benutze simpleftp.jar. Dies ist mein Code, ist es immer gestoppt failed Arbeits

MainActivity.java

import android.content.Intent; 
import android.database.Cursor; 
import android.graphics.BitmapFactory; 
import android.net.Uri; 
import android.provider.MediaStore; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.Button; 
import android.widget.ImageView; 
import android.widget.TextView; 
import android.widget.Toast; 

import org.jibble.simpleftp.SimpleFTP; 

import java.io.File; 

import java.io.IOException; 

public class MainActivity extends AppCompatActivity { 
    private static int RESULT_LOAD_IMG = 1; 
    String imgDecodableString; 

    Button btn; 

    TextView tv; 
    static final String FTP_HOST= "ftp://ftp.lomapod.esy.es/"; 

    /********* FTP USERNAME ***********/ 
    static final String FTP_USER = "xxxxxxxxxx"; 

    /********* FTP PASSWORD ***********/ 
    static final String FTP_PASS ="xxxxxxxxx"; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     btn=(Button) findViewById(R.id.buttonUploadPicture); 
     tv=(TextView) findViewById(R.id.textView); 
     btn.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       File f = new File(imgDecodableString); 
       String name=f.getName(); 

       // Upload sdcard file 
       uploadFile(name); 
      } 
     }); 
    } 

// public void onClick(View v){ 
// 
////  Bundle b=new Bundle(); 
////  Intent i=new Intent(getApplication(), DetailTransActivity.class); 
////  Toast.makeText(this, "Upload Bukti Transaksi Berhasil", 
////    Toast.LENGTH_LONG).show(); 
////  i.putExtras(b); 
////  startActivity(i); 
// 
// } 

    public void loadImagefromGallery(View view) { 
     // Create intent to Open Image applications like Gallery, Google Photos 
     Intent galleryIntent = new Intent(Intent.ACTION_PICK, 
       android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); 
     // Start the Intent 
     startActivityForResult(galleryIntent, RESULT_LOAD_IMG); 
    } 

    @Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     super.onActivityResult(requestCode, resultCode, data); 
     try { 
      // When an Image is picked 
      if (requestCode == RESULT_LOAD_IMG && resultCode == RESULT_OK 
        && null != data) { 
       // Get the Image from data 


       Uri selectedImage = data.getData(); 
       String[] filePathColumn = { MediaStore.Images.Media.DATA }; 

       // Get the cursor 
       Cursor cursor = getContentResolver().query(selectedImage, 
         filePathColumn, null, null, null); 
       // Move to first row 
       cursor.moveToFirst(); 

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

       File f= new File(""+imgDecodableString); 
       f.getName(); 
       ImageView imgView = (ImageView) findViewById(R.id.imgView); 
       // Set the Image in ImageView after decoding the String 
       imgView.setImageBitmap(BitmapFactory 
         .decodeFile(imgDecodableString)); 

      } else { 
       Toast.makeText(this, "Pilih Bukti Transaksi", 
         Toast.LENGTH_LONG).show(); 
      } 
     } catch (Exception e) { 
      Toast.makeText(this, "Upload Bukti Transaksi Gagal", Toast.LENGTH_LONG) 
        .show(); 
     } 
    } 

    public void uploadFile(String fileName){ 


     try { 
      SimpleFTP ftp = new SimpleFTP(); 

      // Connect to an FTP server on port 21. 
      ftp.connect(FTP_HOST, 21, FTP_USER, FTP_PASS); 

      // Set binary mode. 
      ftp.bin(); 

      // Change to a new working directory on the FTP server. 
      ftp.cwd("/assets/"); 

      // Upload some files. 
      ftp.stor(new File(fileName)); 


      // Quit from the FTP server. 
      ftp.disconnect(); 
      Toast.makeText(MainActivity.this,"Success",Toast.LENGTH_LONG).show(); 
     } 
     catch (IOException e) { 
      // Jibble. 
      Toast.makeText(MainActivity.this,"Failed",Toast.LENGTH_LONG).show(); 
     } 
    } 
} 

Es gibt mir immer diesen Fehler. Wenn ich auf den Fehler richte richtete es auf

ftp.connect (FTP_HOST, 21, FTP_USER, FTP_PASS);

05-08 22:17:43.126 24537-24537/com.amobi.imageuploading E/AndroidRuntime: FATAL EXCEPTION: main 
                      android.os.NetworkOnMainThreadException 
                       at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117) 
                       at java.net.InetAddress.lookupHostByName(InetAddress.java:385) 
                       at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236) 
                       at java.net.InetAddress.getAllByName(InetAddress.java:214) 
                       at java.net.Socket.tryAllAddresses(Socket.java:108) 
                       at java.net.Socket.<init>(Socket.java:177) 
                       at java.net.Socket.<init>(Socket.java:149) 
                       at org.jibble.simpleftp.SimpleFTP.connect(SimpleFTP.java:68) 
                       at com.amobi.imageuploading.MainActivity.uploadFile(MainActivity.java:121) 
                       at com.amobi.imageuploading.MainActivity$1.onClick(MainActivity.java:49) 
                       at android.view.View.performClick(View.java:4204) 
                       at android.view.View$PerformClick.run(View.java:17355) 
                       at android.os.Handler.handleCallback(Handler.java:725) 
                       at android.os.Handler.dispatchMessage(Handler.java:92) 
                       at android.os.Looper.loop(Looper.java:137) 
                       at android.app.ActivityThread.main(ActivityThread.java:5041) 
                       at java.lang.reflect.Method.invokeNative(Native Method) 
                       at java.lang.reflect.Method.invoke(Method.java:511) 
                       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
                       at dalvik.system.NativeStart.main(Native Method) 

Kann jemand mir helfen, die Ursache dieses Fehlers zu finden? Danke

Answer 1

gerade auf diesen Codeblock nach setContentView();

if (android.os.Build.VERSION.SDK_INT > 9) { 
    StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); 
    StrictMode.setThreadPolicy(policy); 
} 

Answer 2

Sie über lesen NetworkOnMainThreadException here. NetworkOnMainThreadException ist eine sehr beliebte Ausnahme, wenn Sie Netzwerkoperationen verwenden.