Android實現網絡圖片與html源碼獲取

openkk 12年前發布 | 44K 次閱讀 Android Android開發移動開發

獲取指定網址的圖片：

獲取指定網址的html源碼，這里是搜狐的網址舉例。

Android實現網絡圖片與html源碼獲取

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, "獲取圖片失敗", 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
{
    /**
     * 讀取數據
     * @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();
    }

    /**
     * 獲取網上圖片
     * @throws Exception
     */
    public static byte[] testGetImage(String path) throws Exception
    {
        URL url=new URL(path);
        HttpURLConnection conn=(HttpURLConnection)url.openConnection();
        conn.setConnectTimeout(6*1000);  //設置鏈接超時時間6s
        conn.setRequestMethod("GET");

        if(conn.getResponseCode()==200)
        {
            InputStream inputStream=conn.getInputStream();
            return readStream(inputStream);
        }
        return null;
    }

    /**
     * 獲取網址的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);  //設置鏈接超時時間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="圖片路徑"
    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="獲取圖片" 
            android:layout_width="wrap_content" 
            android:id="@+id/getImage" android:layout_height="wrap_content"></Button>

    <Button 
            android:text="獲取html源碼" 
            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>

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

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Android Android開發移動開發

Android實現網絡圖片與html源碼獲取

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