webView 相關學習筆記

佈局文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="50dip" >
        <Button
            android:layout_alignParentLeft="true"
            android:text="返回"
            android:id="@+id/back"
            android:layout_width="wrap_content"
            android:layout_height="40dip"
            />
        <TextView
            android:layout_centerInParent="true"
            android:layout_width="wrap_content"
            android:layout_height="40dip"
            android:id="@+id/tv"            
            />
        <Button
            android:layout_alignParentRight="true"
            android:text="刷新"
            android:id="@+id/refresh"
            android:layout_width="wrap_content"
            android:layout_height="40dip"
            />        
    </RelativeLayout>

    <WebView
        android:id="@+id/wv"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

MainActivity

package com.tang.web_01;

import android.app.Activity;
import android.app.ActionBar;
import android.app.Fragment;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.TextureView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.webkit.CookieManager;
import android.webkit.CookieSyncManager;
import android.webkit.DownloadListener;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.TextView;
import android.os.Build;
import org.apache.http.cookie.Cookie;

public class MainActivity extends Activity implements OnClickListener {
	private WebView wv;
	private TextView tv;
	private Button back;
	private Button refresh;
	private Handler handler = new Handler(){
		public void handleMessage(android.os.Message msg) {
			//設置cookie;
			CookieSyncManager.createInstance(MainActivity.this);
			CookieManager cookieManager = CookieManager.getInstance();
			cookieManager.setAcceptCookie(true);
			Cookie cookie = (Cookie) msg.obj;
			String str = cookie.getName()+"="+cookie.getValue();
			cookieManager.setCookie("192.168.0.105", str);
			CookieSyncManager.getInstance().sync();
			wv.loadUrl("http://192.168.0.105/index.php");
		};
	};
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		wv = (WebView) findViewById(R.id.wv);
		back = (Button) findViewById(R.id.back);
		refresh = (Button) findViewById(R.id.refresh);
		tv = (TextView) findViewById(R.id.tv);
		back.setOnClickListener(this);
		refresh.setOnClickListener(this);
		wv.setDownloadListener(new MyDownloadListener());
		//wv.loadUrl("http://192.168.0.105/index.php");
		/*
		wv.setWebViewClient(new WebViewClient(){
			@Override
			public boolean shouldOverrideUrlLoading(WebView view, String url) {
				// TODO Auto-generated method stub
				view.loadUrl(url);
				return super.shouldOverrideUrlLoading(view, url);
			}
		});
		
		wv.setWebChromeClient(new WebChromeClient(){
			@Override
			public void onReceivedTitle(WebView view, String title) {
				tv.setText(title);
				super.onReceivedTitle(view, title);
			}
		});*/
		new HttpCookie(handler).start();
	}
	@Override
	public void onClick(View view) {
		switch (view.getId()) {
		case R.id.back:
			finish();
			break;
		case R.id.refresh:
			wv.reload();
			break;
		}
	}
	
	private class MyDownloadListener implements DownloadListener
	{

		  public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype,  
                  long contentLength) {   
			  System.out.println(url);
			  if(url.endsWith(".zip")){
				  new HttpThread(url).start();
				  //Uri uri = Uri.parse(url);
				  //Intent intent = new Intent(Intent.ACTION_VIEW, uri);
				  //startActivity(intent);
			  }
		}
		
	}

}

HttpThread

package com.tang.web_01;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import org.apache.http.client.HttpClient;

import android.os.Environment;

public class HttpThread extends Thread {
	private String  murl;
	public HttpThread(String url) {
		murl = url;
	}
	public void run() {
		try {
			URL httpurl = new URL(murl);
			HttpURLConnection conn = (HttpURLConnection) httpurl.openConnection();
			conn.setDoInput(true);
			conn.setDoOutput(true);
			InputStream in = conn.getInputStream();
			FileOutputStream out = null;
			if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
				File file = new File(Environment.getExternalStorageDirectory(), "test2.apk");
				out = new FileOutputStream(file);
			}
			byte[] b = new byte[6*1024];
			int len;
			while((len = in.read(b)) != -1){
				if(out != null){
					out.write(b, 0, len);
				}
			}
			System.out.print("download success");
		} catch (Exception e) {
			// TODO Auto-generated catch block
			System.out.print("exceptioin");
			e.printStackTrace();
		}
	}
}

HtttpCookie

package com.tang.web_01;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.Header;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.client.AbstractHttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

import android.os.Handler;
import android.os.Message;

public class HttpCookie extends Thread{
	private Handler handler;
	public HttpCookie(Handler hand) {
		handler = hand;
	}
	public void run() {
		//從服務器獲取cookie
		String path = "http://192.168.0.105/test.php";
		HttpClient client = new DefaultHttpClient();
		HttpPost post = new HttpPost(path);
	    List<NameValuePair> parameters = new ArrayList<NameValuePair>();
	    parameters.add(new BasicNameValuePair("user", "user"));
	    parameters.add(new BasicNameValuePair("pass", "pass"));
		try {
			post.setEntity(new UrlEncodedFormEntity(parameters));
			HttpResponse response = client.execute(post);
			int code = response.getStatusLine().getStatusCode();
            if (code == 200) {
              AbstractHttpClient absClient =  (AbstractHttpClient) client;
              List<Cookie> cookies = absClient.getCookieStore().getCookies();
              for (Cookie cookie:cookies) {
            	  Message msg = new Message();
            	  System.out.println(cookie);
            	  msg.obj = cookie;
            	  handler.sendMessage(msg);
              }
            }
		} catch (Exception e) {
			e.printStackTrace();
		}
		
	}
}