android 管理wifi，androidwifi

android 管理wifi，androidwifi

activity_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <Button        android:id="@+id/openwifi"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="開啟WiFi" />    <Button        android:id="@+id/closewifi"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="關閉WiFi" />    <Button        android:id="@+id/wifistate"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="WiFi狀態" /></LinearLayout>

package com.example.yanlei.wifi;import android.content.Context;import android.net.wifi.WifiManager;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;public class MainActivity extends AppCompatActivity {    private Button btnOpen = null;    private Button btnClose = null;    private Button btnState = null;    private WifiManager wifi = null;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        btnOpen = (Button) super.findViewById(R.id.openwifi);        btnClose = (Button) super.findViewById(R.id.closewifi);        btnState = (Button) super.findViewById(R.id.wifistate);        //擷取Wifi服務        wifi = (WifiManager) super.getSystemService(Context.WIFI_SERVICE);        //開啟        btnOpen.setOnClickListener(new OnClickListener() {            public void onClick(View v) {                wifi.setWifiEnabled(true);                Toast.makeText(getApplicationContext(), "開啟Wifi服務!", Toast.LENGTH_LONG).show();            }        });        //關閉        btnClose.setOnClickListener(new OnClickListener() {            public void onClick(View v) {                wifi.setWifiEnabled(false);                Toast.makeText(getApplicationContext(), "關閉Wifi服務!", Toast.LENGTH_LONG).show();            }        });        //狀態        btnState.setOnClickListener(new OnClickListener() {            public void onClick(View v) {                Toast.makeText(getApplicationContext(), "Wifi狀態:" + String.valueOf(wifi.getWifiState()), Toast.LENGTH_LONG).show();            }        });    }}

許可權

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.yanlei.wifi" >    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>    <application        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name=".MainActivity"            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>

參考：http://blog.csdn.net/jianghuiquan/article/details/8641123