1:建立activity_main.xml，代码如下：

<RelativeLayout xmlns:android=""

    xmlns:tools=""

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".MainActivity" >

    <EditText

        android:id="@+id/etWord"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginTop="27dp"

        android:background="@android:drawable/edit_text"

        android:ems="10"

        android:singleLine="true"

        android:textColor="#552006"

        android:textColorHint="#782f10" >

        <requestFocus />

    </EditText>

    <WebView

        android:id="@+id/wvSearchResult"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:layout_alignLeft="@+id/etWord"

        android:layout_below="@+id/etWord"

        android:layout_marginTop="22dp"

        android:textAppearance="?android:attr/textAppearanceMedium"

        android:textSize="25sp" />

    <Button

        android:id="@+id/btnSearch"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignBaseline="@+id/etWord"

        android:layout_alignBottom="@+id/etWord"

        android:layout_toRightOf="@+id/etWord"

        android:text="查询"

        android:onClick="search" />

</RelativeLayout>

2:JAVA类：

package com.hnz.youdaodectionary;

import android.os.Bundle;

import android.app.Activity;

import android.view.Menu;

import android.view.View;

import android.webkit.WebView;

import android.widget.EditText;

import android.widget.Toast;

public class MainActivity extends Activity {

 private EditText etWord;

 private WebView wvSearchResult;

 @Override

 protected void onCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);

  setContentView(R.layout.activity_main);

  etWord = (EditText) findViewById(R.id.etWord);

  wvSearchResult = (WebView) findViewById(R.id.wvSearchResult);

 }

 @Override

 public boolean onCreateOptionsMenu(Menu menu) {

  // Inflate the menu; this adds items to the action bar if it is present.

  getMenuInflater().inflate(R.menu.main, menu);

  return true;

 }

 public void search(View view){

  String strURI = (etWord.getText().toString());

        strURI = strURI.trim();

        //如果查询内容为空提示

        if (strURI.length() == 0)

        {

          Toast.makeText(MainActivity.this, "查询内容不能为空!", Toast.LENGTH_LONG)

              .show();

        }

        //否则则以参数的形式从取得数据，加载到WebView里.

        else

        {

          String strURL = "="+ strURI;

          wvSearchResult.loadUrl(strURL);

        }

 }

 

}