從網絡加載圖像視圖(ImageView)

修改清單文件(AndroidManifest.xml), 添加 Internet訪問權限, <uses-permission android:name="android.permission.INTERNET" />.

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.AndroidImage"
     android:versionCode="1"
     android:versionName="1.0">
   <application android:icon="@drawable/icon" android:label="@string/app_name">
       <activity android:name=".AndroidImage"
                 android:label="@string/app_name">
           <intent-filter>
               <action android:name="android.intent.action.MAIN" />
               <category android:name="android.intent.category.LAUNCHER" />
           </intent-filter>
       </activity>

   </application>
   <uses-sdk android:minSdkVersion="4" />
   <uses-permission android:name="android.permission.INTERNET" />
</manifest>

仍沿用上文"從內部文件 夾加載圖像視圖(ImageView)"中main.xml

AndroidImage.java

package com.AndroidImage;

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

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.widget.ImageView;

public class AndroidImage extends Activity {
 
 private String imageFileURL = "https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhuy2cXRN6hyphenhyphenA6L1PYzdV77gMWfNPpMp0HzE1a6Qh3cvF3ibtUSv2UYr5F6YyT2Dzmo78479nzaN51dShCy0yJB2HRdHn3krcTuTL2eBeHClUSzyNjUZz9kmZkRVmJ1t17yU89Lz_JlqrzV/s150/androidbiancheng.png";
 
   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
      
       ImageView myImageView = (ImageView)findViewById(R.id.imageview);
      
  try {
   URL url = new URL(imageFileURL);
   URLConnection conn = url.openConnection();
   
   HttpURLConnection httpConn = (HttpURLConnection)conn;
   httpConn.setRequestMethod("GET");
   httpConn.connect();

   if (httpConn.getResponseCode() == HttpURLConnection.HTTP_OK) {
    InputStream inputStream = httpConn.getInputStream();
    
    Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
    inputStream.close();
    myImageView.setImageBitmap(bitmap);
   }
  } catch (MalformedURLException e1) {
   // TODO Auto-generated catch block
   e1.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

   }
}

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