Android Load Image from URL

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

package com.concretepage;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.util.Log;
import android.widget.ImageView;
public class AsyncTaskLoadImage  extends AsyncTask<String, String, Bitmap> {
    private final static String TAG = "AsyncTaskLoadImage"; 
    private ImageView imageView;
    public AsyncTaskLoadImage(ImageView imageView) {
	this.imageView = imageView;
    }
    @Override
    protected Bitmap doInBackground(String... params) {
    	Bitmap bitmap = null;
    	try {
        	URL url = new URL(params[0]);
                bitmap = BitmapFactory.decodeStream((InputStream)url.getContent());
	} catch (IOException e) {
		Log.e(TAG, e.getMessage());
	}
        return bitmap;
    }
    @Override
    protected void onPostExecute(Bitmap bitmap) {
		imageView.setImageBitmap(bitmap);
    }
} 

StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);  

package com.concretepage;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import android.app.Activity;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.ImageView;
public class MainActivity extends Activity {
	private final static String TAG = "MainActivity"; 
	private ImageView imageView;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
    	        imageView = (ImageView)findViewById(R.id.image);
	}
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
               getMenuInflater().inflate(R.menu.menu_main, menu);
               return true;
        }
        public void showImageOne(View v) {
    	       String url = "https://www.gstatic.com/webp/gallery3/1.sm.png";
    	       new AsyncTaskLoadImage(imageView).execute(url);
        }
        public void showImageTwo(View v) {
    	       StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
    	       StrictMode.setThreadPolicy(policy);
    	       try {
        	   URL url = new URL("https://www.gstatic.com/webp/gallery/4.sm.jpg");
		   imageView.setImageBitmap(BitmapFactory.decodeStream((InputStream)url.getContent()));
	       } catch (IOException e) {
		   Log.e(TAG, e.getMessage());
	       }
        }    
} 

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.concretepage"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk android:minSdkVersion="16"/>
    <uses-permission android:name="android.permission.INTERNET"/>
    <application 
        android:allowBackup ="false"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity  android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest> 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"    
    tools:context=".MainActivity"
    android:id="@+id/myLayout">
    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/btnmsg1"
        android:onClick="showImageOne"/>
    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/btnmsg2"
        android:onClick="showImageTwo"/>
    <ImageView
	android:id="@+id/image"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	android:background="#000000"
	android:gravity="center"
	android:padding="32dp"
	android:contentDescription="@string/imgDesc"/>
</LinearLayout> 	 

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="app_name">Concretepage</string>
    <string name="imgDesc">Image Description</string>
    <string name="btnmsg1">Click to Show Image One</string>
    <string name="btnmsg2">Click to Show Image Two</string>
</resources>