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【Java】查看HTML代码
作者:Alice / 发布于2016/4/6/ 827
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >
 
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        >
 
        <EditText
            android:id="@+id/et_address"
            android:layout_width="0dip"
            android:layout_height="wrap_content"
            android:layout_weight="3"
            android:singleLine="true"
 
            />
        <Button
            android:id="@+id/btn_query"
            android:layout_width="0dip"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="查询"
 
            android:onClick="onClick"
            />
 
    </LinearLayout>
 
 
    <EditText
        android:id="@+id/et_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="top"
        android:singleLine="false"
        
        />
 
</LinearLayout>


package com.example.jcker_llin.html;
 
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
 
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
 
public class MainActivity extends Activity {
    private EditText et_address;
    private EditText et_content;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        et_address= (EditText) findViewById(R.id.et_address);
        et_content= (EditText) findViewById(R.id.et_content);
 
    }
    public void onClick(View view){
    //在编辑框输入网址
        String urlStr=et_address.getText().toString();
        new AsyncTask<String,Void,String>(){
            @Override
            protected String doInBackground(String... params) {
                //字符缓冲区
                StringBuffer buffer=new StringBuffer();
                try {
                    URL url=new URL("http://"+params[0]+":80");
                    //获取http连接对象
                    HttpURLConnection conn= (HttpURLConnection) url.openConnection();
                        conn.setRequestMethod("GET");
                    ///状态码
                        int code=conn.getResponseCode();
                        if(code==200) {//请求成功
                            //获取响应消息的实体内容
                            InputStreamReader reader = new InputStreamReader(conn.getInputStream(), "UTF-8");
                            char[] charArr = new char[1024 * 8];
                            int len = 0;
                            while ((len = reader.read(charArr)) != -1) {
                                //字符数组转换字符串
                                String str = new String(charArr, 0, len);
                                //追加字符串
                                buffer.append(str);
                            }
                        }
 
                    } catch (MalformedURLException e) {
                        e.printStackTrace();
 
                } catch (IOException e) {
                    e.printStackTrace();
                }
 
                return buffer.toString();
            }
 
            @Override
            protected void onPostExecute(String s) {
                //返回HTML代码
                et_content.setText(s);
            }
        }.execute(urlStr);
    }
}
3. [文件] AndroidManifest.xml ~ 769B     下载(0)     
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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.jcker_llin.html" >
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme" >
        <activity android:name=".MainActivity" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
 
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
 
</manifest>
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