Android dictionary application developed using Baidu dictionary API and Volley network library, volleyandroid

Android dictionary application developed using Baidu dictionary API and Volley network library, volleyandroid

For more information about Baidu dictionary API, visit: Baidu dictionary API introduction.

Here is an introduction to the android network library Volley.

First, let's take a look at the general interface layout!

　　

Repost the final

　　

We can see that the layout is very simple, right:

The layout xml file is as follows:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:orientation="vertical"    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="com.example.dict.MainActivity" >          <LinearLayout         android:orientation="horizontal"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        >                <Button             android:layout_width="0dp"            android:layout_height="wrap_content"            android:layout_weight="1"            android:text="Clear"            android:onClick="clearHandler"            android:padding="7dip"            />        <EditText            android:id="@+id/etWord"            android:singleLine="true"            android:layout_width="0dp"            android:layout_height="wrap_content"            android:layout_weight="2"            android:background="@android:drawable/edit_text"             />        <Button            android:layout_width="0dp"            android:layout_height="wrap_content"            android:layout_weight="1"            android:text="Query"            android:onClick="queryHandler"            android:padding="7dip"             />    </LinearLayout>    <TextView         android:id="@+id/tvResult"        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:hint="result"        /></LinearLayout>

 

 

Then there are several events,

1: Clear button processing: Clear the content in the input box

2: Query button processing:

1: Use the Baidu dictionary API to retrieve content

2: parse the returned json data and process it and display it in the TextView space below,

3: cancel the display of the keyboard.

The Code is as follows:

Package com. example. dict; import java. util. hashMap; import java. util. map; import org. json. JSONArray; import org. json. JSONObject; import com. android. volley. request; import com. android. volley. requestQueue; import com. android. volley. response; import com. android. volley. volleyError; import com. android. volley. toolbox. stringRequest; import com. android. volley. toolbox. volley; import android. support. v7.app. actionBarAct Ivity; import android. content. context; import android. OS. bundle; import android. view. view; import android. view. inputmethod. inputMethodManager; import android. widget. editText; import android. widget. textView; public class MainActivity extends ActionBarActivity {private String url = "http://openapi.baidu.com/public/2.0/translate/dict/simple? Client_id = 5kHZHeo8MN7L6NmPTGV6POsb & q = @ word & from = en & to = zh "; @ Override protected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. activity_main);} public void clearHandler (View view) {EditText text = (EditText) findViewById (R. id. etWord); text. setText ("");} public void queryHandler (View view) {EditText text = (EditText) findViewById (R. id. etWord); if (text. getText (). length () <= 0) {return;} RequestQueue requestQueue = Volley. newRequestQueue (this); String tempUrl = this. url. replace ("@ word", text. getText (). toString (); StringRequest postRequest = new StringRequest (Request. method. GET, tempUrl, new Response. listener <String> () {@ Override public void onResponse (String response) {MainActivity. this. parseResult (response) ;}}, new Response. errorListener () {@ Override public void onErrorResponse (VolleyError error) {}}) {@ Override protected Map <String, String> getParams () {Map <String, string> params = new HashMap <String, String> (); return params ;}}; requestQueue. add (postRequest);} public void parseResult (String source) {try {final TextView display = (TextView) findViewById (R. id. tvResult); display. setText (""); InputMethodManager imm = (InputMethodManager) getSystemService (Context. INPUT_METHOD_SERVICE); if (imm. isActive () {imm. toggleSoftInput (InputMethodManager. SHOW_IMPLICIT, InputMethodManager. HIDE_NOT_ALWAYS);} JSONObject obj = new JSONObject (source); JSONObject data = obj. getJSONObject ("data"); JSONArray symbols = data. getJSONArray ("symbols"); for (int I = 0; I <symbols. length (); I ++) {JSONObject parts = symbols. getJSONObject (I); for (int j = 0; j <parts. getJSONArray ("parts "). length (); j ++) {JSONObject item = parts. getJSONArray ("parts "). getJSONObject (j); display. append (item. getString ("part"); display. append ("\ n"); JSONArray arr = item. getJSONArray ("means"); for (int k = 0; k <arr. length (); k ++) {display. append ("" + arr. getString (k); display. append ("\ n") ;}}} catch (Exception e ){}}}View Code

　　

Areas for improvement:

1: store a local query record

2: Perform Scroll control on the parsed content