Android——获取网络图片

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context="com.basillee.asus.demo.MainActivity3">

<ImageView
android:id="@+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
></ImageView>
</RelativeLayout>

package com.basillee.asus.demo;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.widget.ImageView;

import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

public class MainActivity3 extends ActionBarActivity {

private ImageView imageView=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_activity3);
imageView= (ImageView) findViewById(R.id.imageView);
new Thread(new Runnable() {
@Override
public void run() {
final Bitmap bitmap=getPicture("http://h.hiphotos.baidu.com/news/q%3D100/sign=be8e90f30cfa513d57aa68de0d6d554c/c75c10385343fbf29d10a30cb47eca8065388fe4.jpg");
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
imageView.post(new Runnable() {
@Override
public void run() {
imageView.setImageBitmap(bitmap);
}
});
}
}).start();
}

public Bitmap getPicture(String path){
Bitmap bm=null;
try{
URL url=new URL(path);
URLConnection connection=url.openConnection();
connection.connect();
InputStream inputStream=connection.getInputStream();
bm= BitmapFactory.decodeStream(inputStream);
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return  bm;
}
}