有道词典


package com.example.youdaodictionary;

import android.os.Bundle;

import android.app.Activity;

import android.view.Menu;

import android.view.View;

import android.webkit.WebView;

import android.widget.Button;

import android.widget.EditText;

import android.widget.Toast;

public class MainActivity extends Activity {

   //查询按钮申明

   private Button myButton01;

   //清空按钮申明

   private Button myButton02;

   //输入框申明

   private EditText mEditText1;

   //加载数据的WebView申明

   private WebView mWebView1;

 @Override

 protected void onCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);

  setContentView(R.layout.activity_main);

     //获得布局的几个控件

     myButton01 = (Button)findViewById(R.id.myButton01);

     myButton02 = (Button) findViewById(R.id.myButton02);

     mEditText1 = (EditText) findViewById(R.id.etWord);

     mWebView1 = (WebView) findViewById(R.id.myWebView1);

     //查询按钮添加事件

     myButton01.setOnClickListener(new Button.OnClickListener()

     {

       public void onClick(View arg0)

         {

           String strURI = mEditText1.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;

             mWebView1.loadUrl(strURL);

           }

         }

     });

     //http://dict.youdao.com/m/search?keyfrom=dict.mindex&q=happy

     //清空按钮添加事件，将EditText置空

     myButton02.setOnClickListener(new Button.OnClickListener()

     {

       public void onClick(View v)

       {

         mEditText1.setText("");

       }

     });

   }

 @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;

 }

}

布局文件：

<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" >

    <Button

        android:id="@+id/myButton01"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_toLeftOf="@+id/myButton02"

        android:layout_alignTop="@+id/etWord"

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

        android:onClick="search"

        android:text="查询"/>

    <WebView

        android:id="@+id/myWebView1"

        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:background="@android:drawable/btn_default_small"

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

        android:textSize="25sp" />

    <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="15dp"

        android:layout_toLeftOf="@id/myButton01"

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

        android:ems="10"

        android:singleLine="true"

        android:textColor="#552006"

        android:textColorHint="#782f10" >

        <requestFocus />

    </EditText>

    <Button

        android:id="@id/myButton02"

        style="?android:attr/buttonStyleSmall"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_above="@id/myWebView1"

        android:layout_alignParentRight="true"

        android:text="清空" />

</RelativeLayout>