Android通过访问网页查看网页源码

1.添加网络权限

<!--访问网络的权限--> <uses-permission android:name="android.permission.INTERNET"/>

2.获取网络中网页的数据

/** * 获取网页HTML源代码 * @param path 网页路径 */ public static String getHtml(String path) throws Exception { URL url=new URL(path); HttpURLConnection conn=(HttpURLConnection)url.openConnection(); conn.setConnectTimeout(5000); conn.setRequestMethod("GET"); if(conn.getResponseCode()==200){ InputStream inStream=conn.getInputStream(); byte[] data=read(inStream); String html=new String(data,"UTF-8"); return html; } return null; } /** * 读取流中的数据 */ public static byte[] read(InputStream inputStream) throws IOException { ByteArrayOutputStream outputStream=new ByteArrayOutputStream(); byte[] b=new byte[1024]; int len=0; while((len=inputStream.read(b))!=-1){ outputStream.write(b); } inputStream.close(); return outputStream.toByteArray(); }

3.处理查看网页源码的控制

public class HtmlViewActivity extends Activity { private EditText pathText; private TextView codeView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); pathText=(EditText) findViewById(R.id.pagepath);//网页路径 codeView=(TextView)findViewById(R.id.codeView);//显示获得的源码 Button button=(Button) findViewById(R.id.button);//查看按钮 button.setOnClickListener(new ButtonClickListener());//按钮事件 } /** * 查看按钮处理事件 */ private final class ButtonClickListener implements View.OnClickListener{ @Override public void onClick(View v) { String path=pathText.getText().toString(); try { String html=PageService.getHtml(path); codeView.setText(html); } catch (Exception e) { e.printStackTrace(); Toast.makeText(getApplicationContext(), R.string.error, 1); } } } }

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