轉載請標明出處：http://blog.csdn.net/zhaoyanjun6/article/details/70854942
本文出自【趙彥軍的博客】

• GPS_Presenter

package com.yiba.core; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.location.LocationManager;/*** Created by ${zhaoyanjun} on 2017/3/29.* GPS 開關監聽*/public class GPS_Presenter {private Context mContext ;private Receiver receiver ;private GPS_Interface mInterface ;private String GPS_ACTION = "android.location.PROVIDERS_CHANGED" ;public GPS_Presenter(Context context , GPS_Interface mInterface ){this.mContext = context ;this.mInterface = mInterface ;observeWifiSwitch();}private void observeWifiSwitch(){IntentFilter filter = new IntentFilter();filter.addAction( GPS_ACTION );receiver = new Receiver() ;mContext.registerReceiver(receiver, filter);}/*** 釋放資源*/public void onDestroy(){if ( receiver != null ){mContext.unregisterReceiver( receiver );}if (mContext!=null){mContext = null;}}class Receiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {if (intent.getAction().matches( GPS_ACTION )) {if ( mInterface != null ){mInterface.gpsSwitchState( gpsIsOpen( context ));}}}}/*** 判斷GPS是否開啟，GPS或者AGPS開啟一個就認為是開啟的* @param context* @return true 表示開啟*/public boolean gpsIsOpen(final Context context) {LocationManager locationManager= (LocationManager) context.getApplicationContext().getSystemService(Context.LOCATION_SERVICE);// 通過GPS衛星定位，定位級別可以精確到街（通過24顆衛星定位，在室外和空曠的地方定位準確、速度快）boolean gps = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);// 通過WLAN或移動網絡(3G/2G)確定的位置（也稱作AGPS，輔助GPS定位。主要用于在室內或遮蓋物（建筑群或茂密的深林等）密集的地方定位）boolean network = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);if (gps || network) {return true;}return false;} }

• GPS_Interface 回調接口

package com.yiba.core;/*** Created by ${zhaoyanjun} on 2017/3/29.* gps 開關監聽*/public interface GPS_Interface {void gpsSwitchState( boolean gpsOpen ); }

• 在 Activity 中使用

package com.yiba.core; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.widget.Toast;public class MainActivity extends AppCompatActivity implements GPS_Interface {private GPS_Presenter gps_presenter ;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);gps_presenter = new GPS_Presenter( this , this ) ;}@Overrideprotected void onDestroy() {super.onDestroy();//釋放資源if ( gps_presenter != null ){gps_presenter.onDestroy();}}@Overridepublic void gpsSwitchState(boolean gpsOpen) {if ( gpsOpen ){Toast.makeText(this, " 手機GPS 打開", Toast.LENGTH_SHORT).show();}else {Toast.makeText(this, " 手機GPS 關閉", Toast.LENGTH_SHORT).show();}} }

總結

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