调用有道词典查询单词

1:建立activity_main.xml，代码如下：

<RelativeLayout 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: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http://dict.youdao.com/m取得数据，加载到WebView里.
        else
        {
          String strURL = "http://dict.youdao.com/m/search?keyfrom=dict.mindex&q="+ strURI;
          wvSearchResult.loadUrl(strURL);
        }

 }
 
}