android中的有道词典实例

1、布局文件main.xml

<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<EditText 
    android:id="@+id/editTextid"
    android:layout_width="200px"
    android:layout_height="wrap_content"
    android:layout_x="5px"
    android:layout_y="32px"
/>
<Button 
   android:id="@+id/query"
   android:layout_width="50px"
   android:layout_height="40px"
   android:text="查询"
   android:layout_x="205px"
   android:layout_y="35px"
/>
<Button 
  android:id="@+id/clear"
  android:layout_width="50px"
  android:layout_height="40px"
  android:text="清空"
  android:layout_x="270px"
  android:layout_y="35px"
/>
    <WebView 
    android:id="@+id/webViewId"
    android:layout_width="300px"
    android:layout_height="320px"
    android:layout_x="10px"
    android:layout_y="80px"
    android:focusable="false"
    />
</AbsoluteLayout>

主程序

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class YoudaoActivity extends Activity {
    /** Called when the activity is first created. */
	private EditText editString;
	private Button query;
	private Button clear;
	private WebView webview;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        query = (Button)findViewById(R.id.query);
        clear = (Button)findViewById(R.id.clear);
      
        query.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				editString = (EditText)findViewById(R.id.editTextid);
			String strURL = editString.getText().toString();	
			strURL = strURL.trim();
			webview = (WebView)findViewById(R.id.webViewId);
			if (strURL.length() == 0) {
				Toast.makeText(YoudaoActivity.this, "查询内容不能为空！", Toast.LENGTH_LONG).show();
			}
			else 
			{
				 String url = "http://dict.youdao.com/m/search?keyfrom=dict.mindex&q="+strURL;
				 webview.loadUrl(url);
			}
			}
		});
        clear.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				editString.setText("");
			}
		});
    }
}