Display image url

langen · by **langen** » Tue Aug 21, 2012 5:34 pm

Hi!.

I'm trying to develop an app that display an image with a specific url. So far it is working in my emulator(2.2) but not on my phone (4.0.3). I dont know why but I hope someone can help me

. The code is copied but modify for my work.

Layout:

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Using xml Syntax Highlighting

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    />
    <Button 
    android:id="@+id/get_imagebt"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Show Image"
    android:layout_gravity="center"
    />  
    <ImageView 
    android:id="@+id/imview"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    />
</LinearLayout>
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MainActivity:

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package com.bild.visa;
 
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Random;
 
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
 
public class MainActivity extends Activity {
     
 
     ImageView imView;
     String imageUrl="http://2.bp.blogspot.com/-4JD46Iw0Sas/TV14aYeZILI/AAAAAAAAAck/wlUyUW03URY/s1600/android.jpg";
     Random r= new Random();
    /** Called when the activity is first created. */ 
    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.activity_main);
       
        Button bt3= (Button)findViewById(R.id.get_imagebt);
        bt3.setOnClickListener(getImgListener);
        imView = (ImageView)findViewById(R.id.imview);
    }    
 
    View.OnClickListener getImgListener = new View.OnClickListener()
    {
 
          @Override
          public void onClick(View view) {
               downloadFile(imageUrl);
          }
     
    };
 
   
    Bitmap bmImg;
    void downloadFile(String fileUrl){
          URL myFileUrl =null;          
          try {
               myFileUrl= new URL(fileUrl);
          } catch (MalformedURLException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
          }
          try {
               HttpURLConnection conn= (HttpURLConnection)myFileUrl.openConnection();
               conn.setDoInput(true);
               conn.connect();
               InputStream is = conn.getInputStream();
               
               bmImg = BitmapFactory.decodeStream(is);
               imView.setImageBitmap(bmImg);
          } catch (IOException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
          }
     }
}
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Manifest:

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<uses-permission android:name="android.permission.INTERNET"/>
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Display image url

Display image url

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