Android 监听 WiFi 开关状态

转载请标明出处：http://blog.****.net/zhaoyanjun6/article/details/70854309

本文出自【赵彦军的博客】

• WifiSwitch_Presenter 源码：

package com.yiba.wifi.sdk.lib.presenter;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.content.IntentFilter;

import android.net.wifi.WifiManager;

/**

 * Created by ${zhaoyanjun} on 2017/3/29.

 * Wifi 开关监听

 */

public class WifiSwitch_Presenter {

    private Context mContext ;

    private Receiver receiver ;

    private WifiSwitch_Interface mInterface ;

    public WifiSwitch_Presenter( Context context , WifiSwitch_Interface mInterface ){

        this.mContext = context ;

        this.mInterface = mInterface ;

        observeWifiSwitch();

    }

    private void observeWifiSwitch(){

        IntentFilter filter = new IntentFilter();

        filter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);

        receiver = new Receiver() ;

        mContext.registerReceiver(receiver, filter);

    }

    /**

     * 释放资源

     */

    public void onDestroy(){

        if ( receiver != null ){

            mContext.unregisterReceiver( receiver );

        }

        if (mContext!=null){

            mContext = null;

        }

    }

    class Receiver extends BroadcastReceiver {

        @Override

        public void onReceive(Context context, Intent intent) {

            int wifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, 0);

            switch (wifiState) {

                case WifiManager.WIFI_STATE_DISABLED:

                    if (mInterface != null){

                        mInterface.wifiSwitchState(WifiSwitch_Interface.WIFI_STATE_DISABLED);

                    }

                    break;

                case WifiManager.WIFI_STATE_DISABLING:

                    if (mInterface != null){

                        mInterface.wifiSwitchState(WifiSwitch_Interface.WIFI_STATE_DISABLING);

                    }

                    break;

                case WifiManager.WIFI_STATE_ENABLED:

                    if (mInterface != null){

                        mInterface.wifiSwitchState(WifiSwitch_Interface.WIFI_STATE_ENABLED);

                    }

                    break;

                case WifiManager.WIFI_STATE_ENABLING:

                    if ( mInterface != null ) {

                        mInterface.wifiSwitchState(WifiSwitch_Interface.WIFI_STATE_ENABLING);

                    }

                    break;

                case WifiManager.WIFI_STATE_UNKNOWN:

                    if ( mInterface != null ){

                        mInterface.wifiSwitchState( WifiSwitch_Interface.WIFI_STATE_UNKNOWN );

                    }

                    break;

            }

        }

    }

}

• WifiSwitch_Interface 源码

package com.yiba.wifi.sdk.lib.presenter;

/**

 * Created by ${zhaoyanjun} on 2017/3/29.

 * Wifi 开关监听

 */

public interface WifiSwitch_Interface {

    int WIFI_STATE_ENABLING = 0 ;

    int WIFI_STATE_ENABLED = 1 ;

    int WIFI_STATE_DISABLING = 2 ;

    int WIFI_STATE_DISABLED = 3 ;

    int WIFI_STATE_UNKNOWN  = 4 ;

    void wifiSwitchState( int state );

}

• 使用方式 MainActivity ：

package com.yiba.core;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements WifiSwitch_Interface {

    private WifiSwitch_Presenter wifiSwitch_presenter ;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        wifiSwitch_presenter = new WifiSwitch_Presenter( this , this ) ;

    }

    @Override

    public void wifiSwitchState(int state) {

        switch ( state ){

            case WifiSwitch_Interface.WIFI_STATE_DISABLED  :

                Toast.makeText(this, "WiFi 已经关闭", Toast.LENGTH_SHORT).show();

                break;

            case WifiSwitch_Interface.WIFI_STATE_DISABLING:

                Toast.makeText(this, "WiFi 正在关闭", Toast.LENGTH_SHORT).show();

                break;

            case WifiSwitch_Interface.WIFI_STATE_ENABLED  :

                Toast.makeText(this, "WiFi 已经打开", Toast.LENGTH_SHORT).show();

                break;

            case WifiSwitch_Interface.WIFI_STATE_ENABLING  :

                Toast.makeText(this, "WiFi 正在打开", Toast.LENGTH_SHORT).show();

                break;

        }

    }

    @Override

    protected void onDestroy() {

        super.onDestroy();

        //释放资源

        if ( wifiSwitch_presenter != null ){

            wifiSwitch_presenter.onDestroy();

        }

    }

}