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Android实现网络图片与html源码获取
来源:互联网   发布日期:2015-09-28 16:23:46   浏览:2792次  

导读: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。MainActivitypackagecom.luku.netImage;importcom.luku.Junit.testJunit;importandroid.app.Activity;importandroid.content.Intent;import......

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>

原文链接:http://blog.csdn.net/yf210yf/article/details/6870990

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