Android programming shows examples of pictures on the network _android

The example in this article describes how Android programming displays pictures on the network. Share to everyone for your reference, specific as follows:

To display a picture on the network in Android, you need to find the image address based on the URL, then convert the image into a Java InputStream, and then convert the InputStream stream into a bitmap. Bitmap can be shown directly in the Android ImageView. This is the idea of displaying pictures on the Web, which is simple to achieve. Let's take a look at the implementation process below.

First, add access to the Internet to your program in Androidmanifest.xml:

Copy Code code as follows:

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

Then add a imageview to the layout file to display the pictures on the network:

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android=
"http://schemas.android.com/apk/" Res/android "
  android:layout_width=" fill_parent "
  android:layout_height=" fill_parent "
  android:o" rientation= "vertical" >
  <textview
    android:layout_width= "Fill_parent"
    Wrap_content "
    android:text=" @string/hello "/>
  <imageview android:layout_width=" Wrap_content "
    android:layout_height= "wrap_content"
    android:id= "@+id/imageview"/>
</LinearLayout>

In the activity of the main program, write the picture from the network and convert it into InputStream, then convert it into a bitmap that can be displayed in the ImageView.

Package com.image;
Import java.io.IOException;
Import Java.io.InputStream;
Import java.net.HttpURLConnection;
Import java.net.MalformedURLException;
Import Java.net.URL;
Import android.app.Activity;
Import Android.graphics.Bitmap;
Import Android.graphics.BitmapFactory;
Import Android.os.Bundle;
Import Android.widget.ImageView; The public class Netimageactivity extends activity {/** called the ' when ' is the ' The activity ' is a-a-created. */String IMAGEURL =
   "Http://content.52pk.com/files/100623/2230_102437_1_lit.jpg";
   Bitmap bmimg;
  ImageView Imview;
    @Override public void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);
    Setcontentview (R.layout.main);
    Imview = (ImageView) Findviewbyid (R.id.imageview);
  Imview.setimagebitmap (Returnbitmap (IMAGEURL));
    Public Bitmap returnbitmap (String url) {URL myfileurl = null;
    Bitmap Bitmap = null;
    try {myfileurl = new URL (URL); catch (Malformedurlexception e) {E.printstacktrace();
      try {HttpURLConnection conn = (httpurlconnection) myfileurl. OpenConnection ();
      Conn.setdoinput (TRUE);
      Conn.connect ();
      InputStream is = Conn.getinputstream ();
      Bitmap = Bitmapfactory.decodestream (IS);
    Is.close ();
    catch (IOException e) {e.printstacktrace ();
  return bitmap;

 }
}

Then run the program to display the picture on the network.

Operation Effect:

PS: About Androidmanifest.xml rights control details can refer to the site online tools:

Android manifest Features and Permissions description Encyclopedia:
Http://tools.jb51.net/table/AndroidManifest

For more information on Android-related content readers can view the site: "Android graphics and image processing skills summary", "Android Development introduction and Advanced Course", "Android debugging techniques and common problems solution summary", " Android Multimedia How-to Summary (audio, video, audio, etc), summary of Android Basic components usage, Android View tips Summary, Android layout layout tips and a summary of Android controls usage

I hope this article will help you with the Android program.