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mars老师[Android开发视频教学]01_23 WIFI网络操作
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导读:mars老师[Android开发视频教学]01_23 WIFI网络操作 创建项目:Wifi 项目运行截图: 布局文件:main.xml [html] SPAN style=FONT-SIZE: 18px; FONT-FAMILY: KaiTi_GB2312?xml version=1.0 encoding=utf-8? LinearLayout xmlns:android=http://schemas.android...

mars老师[Android开发视频教学]01_23 WIFI网络操作

创建项目:Wifi

项目运行截图:

布局文件:main.xml

[html]

<SPAN style="FONT-SIZE: 18px; FONT-FAMILY: KaiTi_GB2312"><?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>

<TextView

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="@string/hello"

/>

<Button

android:id="@+id/startWifi"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="启动手机的wifi网卡"

/>

<Button

android:id="@+id/stopWifi"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="关闭手机的wifi网卡"

/>

<Button

android:id="@+id/checkWifi"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="检查当前wifi网卡状态"

/>

</LinearLayout></SPAN>

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>

<TextView

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="@string/hello"

/>

<Button

android:id="@+id/startWifi"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="启动手机的wifi网卡"

/>

<Button

android:id="@+id/stopWifi"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="关闭手机的wifi网卡"

/>

<Button

android:id="@+id/checkWifi"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="检查当前wifi网卡状态"

/>

</LinearLayout>

在manifest文件设置权限:AndroidManifest.xml

[html]

<SPAN style="FONT-SIZE: 18px; FONT-FAMILY: KaiTi_GB2312"><?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="mars.wifi" android:versionCode="1" android:versionName="1.0">

<application android:icon="@drawable/icon" android:label="@string/app_name">

<activity android:name=".WifiActivity" 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>

<uses-sdk android:minSdkVersion="4" />

<!-- 以下是使用wifi访问网络所需要的权限 -->

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

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

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

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

</manifest> </SPAN>

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="mars.wifi" android:versionCode="1" android:versionName="1.0">

<application android:icon="@drawable/icon" android:label="@string/app_name">

<activity android:name=".WifiActivity" 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>

<uses-sdk android:minSdkVersion="4" />

<!-- 以下是使用wifi访问网络所需要的权限 -->

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

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

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

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

</manifest>

==>WifiActivity.java

[java] view plaincopyprint?

<SPAN style="FONT-SIZE: 18px; FONT-FAMILY: KaiTi_GB2312">package mars.wifi;

import android.app.Activity;

import android.content.Context;

import android.net.wifi.WifiManager;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

public class WifiActivity extends Activity {

/** Called when the activity is first created. */

private Button startButton = null;

private Button stopButton = null;

private Button checkButton = null;

private WifiManager wifiManager = null;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

startButton = (Button)findViewById(R.id.startWifi);

stopButton = (Button)findViewById(R.id.stopWifi);

checkButton = (Button)findViewById(R.id.checkWifi);

startButton.setOnClickListener(new StartWifiListener());

stopButton.setOnClickListener(new StopWifiListener());

checkButton.setOnClickListener(new CheckWifiListener());

}

class StartWifiListener implements OnClickListener{

@Override

public void onClick(View v) {

wifiManager = (WifiManager)WifiActivity.this.getSystemService(Context.WIFI_SERVICE);

wifiManager.setWifiEnabled(true);

System.out.println("wifi state --->" + wifiManager.getWifiState());

Toast.makeText(WifiActivity.this, "当前Wifi网卡状态为" + wifiManager.getWifiState(), Toast.LENGTH_SHORT).show();

}

}

class StopWifiListener implements OnClickListener{

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

wifiManager = (WifiManager)WifiActivity.this.getSystemService(Context.WIFI_SERVICE);

wifiManager.setWifiEnabled(false);

System.out.println("wifi state --->" + wifiManager.getWifiState());

Toast.makeText(WifiActivity.this, "当前Wifi网卡状态为" + wifiManager.getWifiState(), Toast.LENGTH_SHORT).show();

}

}

class CheckWifiListener implements OnClickListener{

@Override

public void onClick(View v) {

wifiManager = (WifiManager)WifiActivity.this.getSystemService(Context.WIFI_SERVICE);

System.out.println("wifi state --->" + wifiManager.getWifiState());

Toast.makeText(WifiActivity.this, "当前Wifi网卡状态为" + wifiManager.getWifiState(), Toast.LENGTH_SHORT).show();

}

}

}</SPAN> www.2cto.com

package mars.wifi;

import android.app.Activity;

import android.content.Context;

import android.net.wifi.WifiManager;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

public class WifiActivity extends Activity {

/** Called when the activity is first created. */

private Button startButton = null;

private Button stopButton = null;

private Button checkButton = null;

private WifiManager wifiManager = null;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

startButton = (Button)findViewById(R.id.startWifi);

stopButton = (Button)findViewById(R.id.stopWifi);

checkButton = (Button)findViewById(R.id.checkWifi);

startButton.setOnClickListener(new StartWifiListener());

stopButton.setOnClickListener(new StopWifiListener());

checkButton.setOnClickListener(new CheckWifiListener());

}

class StartWifiListener implements OnClickListener{

@Override

public void onClick(View v) {

wifiManager = (WifiManager)WifiActivity.this.getSystemService(Context.WIFI_SERVICE);

wifiManager.setWifiEnabled(true);

System.out.println("wifi state --->" + wifiManager.getWifiState());

Toast.makeText(WifiActivity.this, "当前Wifi网卡状态为" + wifiManager.getWifiState(), Toast.LENGTH_SHORT).show();

}

}

class StopWifiListener implements OnClickListener{

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

wifiManager = (WifiManager)WifiActivity.this.getSystemService(Context.WIFI_SERVICE);

wifiManager.setWifiEnabled(false);

System.out.println("wifi state --->" + wifiManager.getWifiState());

Toast.makeText(WifiActivity.this, "当前Wifi网卡状态为" + wifiManager.getWifiState(), Toast.LENGTH_SHORT).show();

}

}

class CheckWifiListener implements OnClickListener{

@Override

public void onClick(View v) {

wifiManager = (WifiManager)WifiActivity.this.getSystemService(Context.WIFI_SERVICE);

System.out.println("wifi state --->" + wifiManager.getWifiState());

Toast.makeText(WifiActivity.this, "当前Wifi网卡状态为" + wifiManager.getWifiState(), Toast.LENGTH_SHORT).show();

}

}

}

作者:wwj_748

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