一种中英文翻译工具灵格斯，原理如下，输入相关的要翻译的字词，到相关网站中查询，将结果在本地显示。手机中实现这个功能，必须用手机访问Web的知识。学习JEE的童鞋明白，许多东西底层使用Apache HttpClient实现功能。如一个XFire底层访问，一些web的服务器底层等，一些常用的应用程序访问web网站等都是用这个组件开发，学习Android的童鞋会发现Android SDK中包含这个组件HttpClient， 但是他的功能没有JEE的HTTPClient的公共强大，但是仍然非常强悍！好了言归正传，开始讲解关于一个简单中英文翻译字典的实现。
Android中实现原理讲解：采用HttpClient或者URLConnection访问得到结果，解析实现而已。至于界面吗？可以自行安排。好了看一下实现效果呗！
重点代码如下：
package com.easyway.android.xdict;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.Map.Entry;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
/**
* 手机访问远程http请求的信息
* @author longgangbai
* @date 2010-5-25
* @version 1.0
* @since JDK6.0
*/
public class HTTPClient {
private final static String DEFAULT_CHARSET="UTF-8";
/**
* 手机远程请求文件信息解析
* @param urlPath
* @param map
* @return
*/
public static String executeByHttpURLConnection(String urlPath,Map<String, String> map){
String result="";
InputStream is =null;
OutputStream os = null;
try {
URL url = new URL(/blog_article/urlPath/index.html);
HttpURLConnection httpCon = (HttpURLConnection) url.openConnection();
//设置请求的方式
httpCon.setRequestMethod("POST");
//设置输入的信息
httpCon.setDoInput(true);
//设置输出信息
httpCon.setDoOutput(true);
//设置是否使用缓存
httpCon.setUseCaches(false);
//设置请求的参数
if(map!=null)
{
Set<Entry<String,String>> entryMaps=map.entrySet();
for (Entry<String, String> entry : entryMaps) {
httpCon.addRequestProperty(entry.getKey(), entry.getValue());
}
}
httpCon.setRequestProperty("Charset", DEFAULT_CHARSET);
is = httpCon.getInputStream();
//os = httpCon.getOutputStream();
// 使用os发送xml数据，使用is接收服务端返回的数据
result=getResponseResult(is);
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
try {
is.close();
os.close();
} catch (Exception e) {
}
}
return result;
}
/**
* 获取相应的信息
* @param is
* @return
* @throws IOException
*/
public static String getResponseResult(InputStream is ) throws IOException{
BufferedReader br = new BufferedReader(new InputStreamReader(is, DEFAULT_CHARSET));
String line=null;
String result="";
while((line=br.readLine())!=null){
result+=line;
}
return result;
}
/**
* 手机访问页面采用apache的访问
* @param httpurl
* @return
*/
public static String executeHttpClientByApache(String httpurl,Map<String, String> map) {
// 构建HttpClient的实例的应用
HttpClient httpclient=new DefaultHttpClient();
//设置post发送的对象
HttpPost httpPost = new HttpPost();
//设置各种请求的头部信息和参数
List<NameValuePair> params=new ArrayList<NameValuePair>();
if(map!=null){
Set<Entry<String,String>> entryMaps=map.entrySet();
for (Entry<String, String> entry : entryMaps) {
params.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
}
String result="";
try {
//设置请求的格式为UTF-8形式
httpPost.setEntity(new UrlEncodedFormEntity(params,HTTP.UTF_8));
//获取响应的信息
HttpResponse response= httpclient.execute(httpPost);
//获取响应的状态
int statusCode=response.getStatusLine().getStatusCode();
if(statusCode==200){
result=EntityUtils.toString(response.getEntity(), DEFAULT_CHARSET);
}else{
System.out.println("statusCode="+statusCode);
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
}
效果图如下：
protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent) {
super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
switch(requestCode) {
case REQ_CODE_PICK_IMAGE:
if(resultCode == RESULT_OK){
Uri selectedImage = imageReturnedIntent.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
cursor.close();
Bitmap yourSelectedImage = BitmapFactory.decodeFile(filePath);
}
}
}
我的布局里面有很多个textView 我总不能一个个重新设置 但是他们有 很多共性
public final class R {
public static final class attr {
}
public static final class drawable {
public static final int icon=0x7f020000;
}
public static final class id {
public static final int s1=0x7f050000;
public static final int s10=0x7f050009;
public static final int s11=0x7f05000a;
public static final int s12=0x7f05000b;
public static final int s13=0x7f05000c;
public static final int s14=0x7f05000d;
public static final int s15=0x7f05000e;
public static final int s16=0x7f05000f;
public static final int s2=0x7f050001;
public static final int s3=0x7f050002;
public static final int s4=0x7f050003;
public static final int s5=0x7f050004;
public static final int s6=0x7f050005;
public static final int s7=0x7f050006;
public static final int s8=0x7f050007;
public static final int s9=0x7f050008;
}
public static final class layout {
public static final int main=0x7f030000;
public static final int toast=0x7f030001;
}
public static final class string {
public static final int app_name=0x7f040000;
public static final int s2=0x7f040001;
}
}
上面的是我的r文件
import java.lang.reflect.Field;
/* ... */
for (int i = 1; i < 16; i++) {
int id = R.id.class.getField("s" + i).getInt(0);
tv[i] = (TextView)findViewById(id);
tv[i].setTypeface(face);
tv[i].setClickable(true);
tv[i].setOnClickListener(clickListener);
}
当然如果你的布局如果只有textView组成 而没有其他的控件那就无需使用这个了
可以使用
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
LinearLayout ll = (LinearLayout) findViewById(R.id.LinearLayout01);
for (int i = 0; i < ll.getChildCount(); i++) {
((TextView) ll.getChildAt(i)).setText("Text View " + i);
}