Android显示网络图片相关实现方法浅谈

Android显示网络图片Step1：
//浏览网络图片
public class WebImageViewActivity extends Activity implements OnItemClickListener
{
//String imageUrl = "http://i.pbase.com/o6/92/229792/1/80199697.uAs58yHk.50pxCross_of_the_Knights_Templar_svg.png";
public static String imageUrl = "";
   Bitmap bmImg;
   ImageView imView;

@Override
public void onCreate(Bundle savedInstanceState)
{
  super.onCreate(savedInstanceState);
  setContentView(R.layout.web_imageview_activity);

  //imageUrl="http://www.iwapzone.com/templets/default/images/apc_bg.png";
  imView = (ImageView) findViewById(R.id.imgview);

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;

}

@Override
protected void onDestroy()
{
  super.onDestroy();
  Intent intent = new Intent(this, PlayFileService.class);
  stopService(intent);
}

@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
// TODO Auto-generated method stub

}

}

其中，returnBitMap(String url) 方法就是具体实现网络图片转换成bitmap。

Android显示网络图片Step2:

web_imageview_activity.xml

      android:layout_width="fill_parent" android:layout_height="fill_parent"
      android:orientation="vertical" android:background="@android:color/transparent"   >
android:id="@+id/imgview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"   />

Android显示网络图片Step3：

在你的AndroidManifest.xml文件的< /manifest>节点上面添加

< uses-permission android:name="Android.permission.INTERNET" />，这是由于Android有很多的权限限制，否则图片是不能在你的模拟器上显示的。

http://www.189works.com/article-102567-1.html

http://www.189works.com/article-2612-1.html

http://wenku.baidu.com/view/1ecca51c964bcf84b9d57b80.html

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