使用google service定位服务

概述

使用google service的API实现定位功能，封装成一个小模块。需要安装google service相关的sdk包，手机需要装有google服务框架等。主要是国外产品使用，国内需要翻墙，这里做下记录。

导入：

    compile 'com.google.android.gms:play-services-location:9.4.0'

使用

初始化模块，启动定时上报位置信息

 public void initLocationModule() {        locationModule = new GoogleLocationModule(mActivity);        locationModule.LocationInit(context);        locationModule.googleClientConnect();        locationModule.setLocationChangedListener(this);        locationModule.startLocationUpdates();    }

退出时释放模块资源

 @Override    public void releaseLocationModule() {        locationModule.stopLocationUpdates();        locationModule.googleClientDisconnect();    }

监听模块上报数据

 @Override    public void onLocationChanged(Location location) {        T.showShort(context, "mCurrentLocation: " + location.getLatitude());    }

实现

模块接口

public interface LocationModule {    void LocationInit(Context context);    void startLocationUpdates();    void stopLocationUpdates();    void googleClientConnect();    void googleClientDisconnect();    void setLocationChangedListener(LocationChangedListener locationChangedListener);}

模块实现

public class GoogleLocationModule implements        LocationModule,        GoogleApiClient.ConnectionCallbacks,        GoogleApiClient.OnConnectionFailedListener,        LocationListener,        ResultCallback<LocationSettingsResult> {    private MyLog myLog = new MyLog("[GoogleLocationModule] ");    private Context context;    private Activity mActivity;    protected static final int REQUEST_CHECK_SETTINGS = 0x1;    public static final long UPDATE_INTERVAL_IN_MILLISECONDS = 5000;    public static final long FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS = UPDATE_INTERVAL_IN_MILLISECONDS / 2;    public static GoogleApiClient mGoogleApiClient;    protected LocationRequest mLocationRequest;    public static LocationSettingsRequest mLocationSettingsRequest;    protected Location mCurrentLocation;    protected String mLastUpdateTime;    protected Boolean mRequestingLocationUpdates = false;    protected Boolean mStartLocationUpdates = false;    private LocationChangedListener locationChangedListener;    public GoogleLocationModule(Activity activity) {        this.mActivity = activity;    }    @Override    public void LocationInit(Context context) {        this.context = context;        buildGoogleApiClient();        createLocationRequest();        buildLocationSettingsRequest();        checkLocationSettings();  //检查并请求打开位置权限    }    @Override    public void startLocationUpdates() {        if (!mGoogleApiClient.isConnected()){//未连接，设置标志位，连接时启动            mRequestingLocationUpdates = true;        }else{                              //已连接，判断是否已启动            if (mStartLocationUpdates)                return;            if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED                    && ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {                return;            }            LocationServices.FusedLocationApi.requestLocationUpdates(                    mGoogleApiClient,                    mLocationRequest,                    this            );            mStartLocationUpdates = true;        }    }    @Override    public void stopLocationUpdates() {        LocationServices.FusedLocationApi.removeLocationUpdates(                mGoogleApiClient,                this        );        mRequestingLocationUpdates = false;        mStartLocationUpdates = false;    }    @Override    public void googleClientConnect() {        if (!mGoogleApiClient.isConnected())            mGoogleApiClient.connect();    }    @Override    public void googleClientDisconnect() {        mGoogleApiClient.disconnect();    }    @Override    public void setLocationChangedListener(LocationChangedListener locationChangedListener) {        this.locationChangedListener = locationChangedListener;    }    protected void checkLocationSettings() {        PendingResult<LocationSettingsResult> result =                LocationServices.SettingsApi.checkLocationSettings(                        mGoogleApiClient,                        mLocationSettingsRequest                );        result.setResultCallback(this);    }    protected synchronized void buildGoogleApiClient() {        myLog.d("Building GoogleApiClient");        mGoogleApiClient = new GoogleApiClient.Builder(context)                .addConnectionCallbacks(this)                .addOnConnectionFailedListener(this)                .addApi(LocationServices.API)                .build();    }    protected void createLocationRequest() {        mLocationRequest = new LocationRequest();        mLocationRequest.setInterval(UPDATE_INTERVAL_IN_MILLISECONDS);        mLocationRequest.setFastestInterval(FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS);        mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);    }    protected void buildLocationSettingsRequest() {        LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder();        builder.addLocationRequest(mLocationRequest);        mLocationSettingsRequest = builder.build();    }    @Override    public void onLocationChanged(Location location) {        mCurrentLocation = location;        mLastUpdateTime = DateFormat.getTimeInstance().format(new Date());        locationChangedListener.onLocationChanged(location);    }    @Override    public void onConnected(Bundle bundle) {        myLog.d("GoogleApiClient onConnected");        if (mRequestingLocationUpdates)            startLocationUpdates();        if (mCurrentLocation == null) {            if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED                    && ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {                return;            }            mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);            mLastUpdateTime = DateFormat.getTimeInstance().format(new Date());            if (mCurrentLocation != null) {                T.showShort(context, "getLastLocation: " + mCurrentLocation.getLatitude());                myLog.d("mCurrentLocation: " + mCurrentLocation.getAltitude());            } else {                myLog.d("mCurrentLocation null");            }        }    }    @Override    public void onConnectionSuspended(int i) {        myLog.d("GoogleApiClient onConnectionSuspended");    }    @Override    public void onConnectionFailed(ConnectionResult connectionResult) {        myLog.e("GoogleApiClient onConnectionFailed: " + connectionResult.getErrorMessage());    }    //位置权限请求返回结果    @Override    public void onResult(LocationSettingsResult locationSettingsResult) {        final Status status = locationSettingsResult.getStatus();        switch (status.getStatusCode()) {            case LocationSettingsStatusCodes.SUCCESS:                myLog.d("All location settings are satisfied.");                break;            case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:                myLog.d("Location settings are not satisfied. Show the user a dialog to" +                        "upgrade location settings ");                try {                    status.startResolutionForResult(mActivity, REQUEST_CHECK_SETTINGS);                } catch (IntentSender.SendIntentException e) {                    myLog.w("PendingIntent unable to execute request.");                }                break;            case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:                T.showShort(context, context.getString(R.string.map_open_gps_remind));                myLog.e("Location settings are inadequate, and cannot be fixed here. Dialog not created.");                break;        }    }}