Android实现网络图片与html源码获取

获取指定网址的图片：

 

获取指定网址的html源码，这里是搜狐的网址举例。

 

MainActivity

package com.luku.netImage;    import com.luku.Junit.testJunit;    import android.app.Activity;  import android.content.Intent;  import android.graphics.Bitmap;  import android.graphics.BitmapFactory;  import android.os.Bundle;  import android.view.View;  import android.view.View.OnClickListener;  import android.widget.Button;  import android.widget.EditText;  import android.widget.ImageView;  import android.widget.Toast;    public class MainActivity extends Activity  {   Button getImagebutton;   EditText imagePatheditText;   ImageView imageView;   Button exitbButton;   Button gethtml;   @Override   public void onCreate(Bundle savedInstanceState)   {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);        getImagebutton=(Button)findViewById(R.id.getImage);    gethtml=(Button)findViewById(R.id.gethtml);    exitbButton=(Button)findViewById(R.id.exit);    imagePatheditText=(EditText)findViewById(R.id.ImagePath);    imageView=(ImageView)findViewById(R.id.imageView);        getImagebutton.setOnClickListener(new OnClickListener()    {        @Override     public void onClick(View v)     {      try      {       byte[] data=testJunit.testGetImage(imagePatheditText.getText().toString());       Bitmap bm=BitmapFactory.decodeByteArray(data, 0, data.length);       imageView.setImageBitmap(bm);      } catch (Exception e)      {       Toast.makeText(MainActivity.this, "获取图片失败", Toast.LENGTH_SHORT);      }           }    });        gethtml.setOnClickListener(new OnClickListener()    {        @Override     public void onClick(View v)     {      Intent intent=new Intent(MainActivity.this, SecondActivity.class);      MainActivity.this.startActivity(intent);     }    });        exitbButton.setOnClickListener(new OnClickListener()    {          @Override     public void onClick(View v)     {      android.os.Process.killProcess(android.os.Process.myPid());           }    });       }  }

package com.luku.netImage;    import com.luku.Junit.testJunit;    import android.app.Activity;  import android.os.Bundle;  import android.view.View;  import android.view.View.OnClickListener;  import android.widget.Button;  import android.widget.TextView;    public class SecondActivity extends Activity  {   Button backbButton;   TextView htmlTextView;   @Override   protected void onCreate(Bundle savedInstanceState)   {    // TODO Auto-generated method stub    super.onCreate(savedInstanceState);    setContentView(R.layout.second);        backbButton=(Button)findViewById(R.id.back);    htmlTextView=(TextView)findViewById(R.id.htmlView);    try    {     htmlTextView.setText(new String(testJunit.testGetHtml()));    } catch (Exception e)    {     e.printStackTrace();    }        backbButton.setOnClickListener(new OnClickListener()    {          @Override     public void onClick(View v)     {      SecondActivity.this.finish();           }    });   }     }

package com.luku.Junit;    import java.io.ByteArrayOutputStream;  import java.io.InputStream;  import java.net.HttpURLConnection;  import java.net.URL;    public class testJunit  {   /**    * 读取数据    * @param inputStream    * @return    * @throws Exception    */   public static byte[] readStream(InputStream inputStream) throws Exception   {    byte[] buffer=new byte[1024];    int len=-1;    ByteArrayOutputStream byteArrayOutputStream=new ByteArrayOutputStream();        while((len=inputStream.read(buffer))!=-1)    {     byteArrayOutputStream.write(buffer,0,len);    }        inputStream.close();    byteArrayOutputStream.close();    return byteArrayOutputStream.toByteArray();   }      /**    * 获取网上图片    * @throws Exception    */   public static byte[] testGetImage(String path) throws Exception   {    URL url=new URL(path);    HttpURLConnection conn=(HttpURLConnection)url.openConnection();    conn.setConnectTimeout(6*1000);  //设置链接超时时间6s    conn.setRequestMethod("GET");      if(conn.getResponseCode()==200)    {     InputStream inputStream=conn.getInputStream();     return readStream(inputStream);    }    return null;   }      /**    * 获取网址的html    * @throws Exception    */   public static byte[] testGetHtml() throws Exception   {    String urlpath="http://www.sohu.com/";    URL url=new URL(urlpath);    HttpURLConnection conn=(HttpURLConnection)url.openConnection();    conn.setConnectTimeout(6*1000);  //设置链接超时时间6s      conn.setRequestMethod("GET");      if(conn.getResponseCode()==200)    {     InputStream inputStream=conn.getInputStream();     byte[] data=readStream(inputStream);     return data;    }    return null;   }  }

main.xml

<?xml version="1.0" encoding="utf-8"?>  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"      android:orientation="vertical"      android:layout_width="fill_parent"      android:layout_height="fill_parent"      >  <TextView        android:layout_width="fill_parent"       android:layout_height="wrap_content"       android:text="图片路径"      android:textSize="20sp"      />  <EditText    android:layout_width="match_parent"    android:id="@+id/ImagePath"    android:layout_height="wrap_content"    android:text="http://avatar.csdn.net/C/9/A/1_yf210yf.jpg"></EditText>  <LinearLayout android:id="@+id/linearLayout1" android:layout_height="wrap_content" android:layout_width="match_parent">      <Button         android:text="获取图片"         android:layout_width="wrap_content"         android:id="@+id/getImage" android:layout_height="wrap_content"></Button>              <Button         android:text="获取html源码"         android:id="@+id/gethtml"         android:layout_width="wrap_content"         android:layout_height="wrap_content"></Button>          </LinearLayout>     <ImageView    android:id="@+id/imageView"    android:layout_height="wrap_content"    android:layout_width="wrap_content"></ImageView>  <Button    android:text="退出"    android:id="@+id/exit"    android:layout_width="wrap_content"    android:layout_height="wrap_content"></Button>     </LinearLayout>

second.xml

<?xml version="1.0" encoding="utf-8"?>  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"      android:orientation="vertical"      android:layout_width="fill_parent"      android:layout_height="fill_parent"      >        <Button        android:text="返回"        android:id="@+id/back"        android:layout_width="wrap_content"        android:layout_height="wrap_content"></Button>      <ScrollView       android:layout_width="wrap_content"        android:layout_height="wrap_content">      <TextView        android:id="@+id/htmlView"        android:layout_width="wrap_content"        android:layout_height="wrap_content"></TextView>      </ScrollView>            </LinearLayout>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"        package="com.luku.netImage"        android:versionCode="1"        android:versionName="1.0">      <uses-sdk android:minSdkVersion="8" />      <uses-permission android:name="android.permission.INTERNET"></uses-permission>        <application android:icon="@drawable/icon" android:label="@string/app_name">          <activity android:name=".MainActivity"                    android:label="@string/app_name">              <intent-filter>                  <action android:name="android.intent.action.MAIN" />                  <category android:name="android.intent.category.LAUNCHER" />              </intent-filter>          </activity>      <activity android:name=".SecondActivity"                    android:label="@string/app_name">                                   </activity>        </application>  </manifest>

转自：http://blog.csdn.net/yf210yf/article/details/6870990