Android HTTP实例 发送请求和接收响应

Android HTTP实例 发送请求和接收响应

 

Android Http连接 实例：发送请求和接收响应

添加权限

　　首先要在manifest中加上访问网络的权限： 

<manifest ... >
    <uses-permission android:name="android.permission.INTERNET" />
    ...
</manifest>

　　完整的Manifest文件如下：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.httpdemo1"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />
    
    <uses-permission android:name="android.permission.INTERNET" /> 
    

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.httpdemo1.HttpDemo1Activity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

 

布局代码如下： 

<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=".HttpDemo1Activity" >

    <TextView
        android:id="@+id/myWebTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="" />

    <Button
        android:id="@+id/requestBtn"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:text="Send Request" />

    <WebView
        android:id="@+id/webview"
        android:layout_width="fill_parent"
        android:layout_height="match_parent"
        android:layout_above="@id/requestBtn"
        android:layout_below="@id/myWebTitle" />

</RelativeLayout>

activity_http_demo1.xml