Android的API 14 - POST数据到HTTP [英] Android API 14 - POST Data to HTTP
本文介绍了Android的API 14 - POST数据到HTTP的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我很没有经验，当涉及到开发Android应用程序，我不能code大量的Java。我一直在google'ing周围约2小时，试图如何POST数据发送到HTTP Web服务器页面，并获取输出的数据，但没有工作的许多不同的例子。我使用了Android SDK 4.0版（API 14），没有人知道如何做到这一点？只是一个简单的发布一些数据，并得到输出。
感谢。
编辑：这是我目前的code，
包me.babblebox.application;进口java.io.IOException异常;
进口的java.util.ArrayList;
进口的java.util.List;进口org.apache.http.Htt presponse;
进口org.apache.http.NameValuePair;
进口org.apache.http.client.ClientProtocolException;
进口org.apache.http.client.HttpClient;
进口org.apache.http.client.entity.UrlEn codedFormEntity;
进口org.apache.http.client.methods.HttpPost;
进口org.apache.http.impl.client.DefaultHttpClient;
进口org.apache.http.message.BasicNameValuePair;进口android.app.Activity;
进口android.os.Bundle;
进口android.view.View;公共类BabbleBoxActivity延伸活动{
@覆盖
公共无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.main）;
}
公共无效check_login（）{
//创建一个新的HttpClient和邮政头
HttpClient的HttpClient的=新DefaultHttpClient（）;
HttpPost httppost =新HttpPost（http://babblebox.me/android/test.php）; 尝试{
//添加数据
清单＆LT;＆的NameValuePair GT; namevaluepairs中=新的ArrayList＆LT;＆的NameValuePair GT;（2）;
nameValuePairs.add（新BasicNameValuePair（ID，12345））;
nameValuePairs.add（新BasicNameValuePair（StringData是，你好））;
httppost.setEntity（新UrlEn codedFormEntity（namevaluepairs中））; //执行HTTP POST请求
HTT presponse响应= httpclient.execute（httppost）; }赶上（ClientProtocolException E）{
// TODO自动生成catch块
}赶上（IOException异常五）{
// TODO自动生成catch块
}
}
公共无效check_login_button（视图v）{
check_login（）;
}
}
清单文件：
＆LT;？XML版本=1.0编码=UTF-8＆GT？;
＆LT;清单的xmlns：机器人=http://schemas.android.com/apk/res/android
包=me.babblebox.application
安卓版code =1
机器人：=的versionName1.0＆GT; ＆LT;采用-SDK安卓的minSdkVersion =14/＆GT;＆lt;应用机器人：图标=@绘制/ bb_launch_icon机器人：标签=@字符串/ APP_NAME机器人：testOnly =false的机器人：名字= .BabbleBox机器人：启用=真正的＆GT;
＆LT;活动机器人：标签=@字符串/ APP_NAME机器人：名字=。BabbleBoxActivity＆GT;
＆所述;意图滤光器＆gt;
＆lt;作用机器人：名字=android.intent.action.MAIN/＆GT; ＆LT;类机器人：名字=android.intent.category.LAUNCHER/＆GT;
＆所述; /意图滤光器＆gt;
＆LT; /活性GT;
＆LT; /用途＆gt;
＆LT;使用许可权的android：NAME =android.permission.INTERNET对/＆GT;＆LT; /清单＆GT;
按钮XML调用该方法：
＆LT;按钮
机器人：ID =@ + ID / Button_Login
机器人：layout_width =WRAP_CONTENT
机器人：layout_height =WRAP_CONTENT
机器人：文字=登陆
安卓的onClick =check_login_button/＆GT;
解决方案
公共无效POSTDATA（）{
//创建一个新的HttpClient和邮政头
HttpClient的HttpClient的=新DefaultHttpClient（）;
HttpPost httppost =新HttpPost（http://www.yoursite.com/script.php）; 尝试{
//添加数据
清单＆LT;＆的NameValuePair GT; namevaluepairs中=新的ArrayList＆LT;＆的NameValuePair GT;（2）;
nameValuePairs.add（新BasicNameValuePair（ID，12345））;
nameValuePairs.add（新BasicNameValuePair（StringData是，你好））;
httppost.setEntity（新UrlEn codedFormEntity（namevaluepairs中））; //执行HTTP POST请求
HTT presponse响应= httpclient.execute（httppost）; }赶上（ClientProtocolException E）{
// TODO自动生成catch块
}赶上（IOException异常五）{
// TODO自动生成catch块
}
}
另外你必须添加权限ApplicationManifest.xml让互联网：
＆LT;清单xlmns：安卓...＆GT;
...
＆LT;使用许可权的android：NAME =android.permission.INTERNET对＆GT;＆LT; /使用许可权＆GT;
＆LT; /清单＆GT;
编辑：
您的问题不是在POST code，但你是如何调用的onClick方法，试试这个解决您的问题：
公共无效buttonListener（视图v）{
check_login（）;
}
和打电话让你的布局XML类似于此：
＆LT;按钮
机器人：文字=调用的XML布局
机器人：ID =@ + ID / Button04的android：layout_width =FILL_PARENT
机器人：layout_height =WRAP_CONTENT
安卓的onClick =buttonListener＆GT;
＆LT; /按钮＆GT;
您必须在一个参数添加到监听器方法是查看。
I'm very inexperienced when it comes to developing Android Applications and I cannot code a lot of Java. I have been google'ing around for around 2 hours now, trying many different examples of how to send POST data to a HTTP web server page and getting the outputted data, but none work. I am using the Android SDK Version 4.0 (API 14), does anyone know how to do this? Just a simple post some data, and get the output.
Thanks.
EDIT: Here is my current code,
package me.babblebox.application;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
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 android.app.Activity;
import android.os.Bundle;
import android.view.View;
public class BabbleBoxActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void check_login() {
// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://babblebox.me/android/test.php");
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("id", "12345"));
nameValuePairs.add(new BasicNameValuePair("stringdata", "Hi"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
}
public void check_login_button(View v) {
check_login();
}
}
manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="me.babblebox.application"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="14" /><application android:icon="@drawable/bb_launch_icon" android:label="@string/app_name" android:testOnly="false" android:name=".BabbleBox" android:enabled="true">
<activity android:label="@string/app_name" android:name=".BabbleBoxActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.INTERNET" />
</manifest>
Button XML that calls the method:
<Button
android:id="@+id/Button_Login"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Login"
android:onClick="check_login_button"/>
解决方案
public void postData() {
// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.yoursite.com/script.php");
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("id", "12345"));
nameValuePairs.add(new BasicNameValuePair("stringdata", "Hi"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
}
Also you must add permissions to ApplicationManifest.xml to allow internet:
<manifest xlmns:android...>
...
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest>
EDIT:
Your problem is not in the POST code, but how you are calling the onClick method, try this to fix your problem:
public void buttonListener(View v) {
check_login();
}
And call make your layout XML look similar to this:
<Button
android:text="Calling From XML Layout"
android:id="@+id/Button04" android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:onClick="buttonListener">
</Button>
You must add one parameter to Listener method that is the View.
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