Android 监听 WiFi 开关状态

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• 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();        }    }}