Java tutorial
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We also recommend that a * file or class name and description of purpose be included on the * same "printed page" as the copyright notice for easier * identification within third-party archives. * * Copyright 2016 Alibaba Group * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.alibaba.weex.extend.module.location; import android.Manifest; import android.content.Context; import android.content.pm.PackageManager; import android.location.Address; import android.location.Criteria; import android.location.Geocoder; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.support.v4.app.ActivityCompat; import android.text.TextUtils; import com.taobao.weex.WXEnvironment; import com.taobao.weex.WXSDKInstance; import com.taobao.weex.WXSDKManager; import com.taobao.weex.utils.WXLogUtils; import org.json.JSONException; import java.util.ArrayList; import java.util.Collection; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.UUID; /** * Created by lixinke on 16/9/10. */ public class DefaultLocation implements ILocatable { private static final String TAG = "DefaultLocation"; private static final int TIME_OUT_WHAT = 0x11; private Map<String, WXLocationListener> mRegisterSucCallbacks = new HashMap<>(); private List<WXLocationListener> mWXLocationListeners = new ArrayList<>(); private WXSDKInstance mWXSDKInstance; private LocationManager mLocationManager; private static final int GPS_TIMEOUT = 15000; private int MIN_TIME = 20000; private int MIN_DISTANCE = 5; public DefaultLocation(WXSDKInstance instance) { mWXSDKInstance = instance; } @Override public void setWXSDKInstance(WXSDKInstance WXSDKInstance) { mWXSDKInstance = WXSDKInstance; } @Override public void getCurrentPosition(final String successCallback, final String errorCallback, final String params) { if (WXEnvironment.isApkDebugable()) { WXLogUtils.d(TAG, "into--[getCurrentPosition] successCallback:" + successCallback + " \nerrorCallback:" + errorCallback + " \nparams:" + params); } if (!TextUtils.isEmpty(params)) { try { org.json.JSONObject jsObj = new org.json.JSONObject(params); boolean enableHighAccuracy = jsObj.optBoolean("enableHighAccuracy"); boolean enableAddress = jsObj.optBoolean("address"); WXLocationListener listener = findLocation(null, successCallback, errorCallback, enableHighAccuracy, enableAddress); if (listener != null) { mWXLocationListeners.add(listener); } return; } catch (JSONException e) { WXLogUtils.e(TAG, e); } } Map<String, Object> options = new HashMap<>(); options.put(ERROR_CODE, ErrorCode.PARAMS_ERROR); options.put(ERROR_MSG, ErrorMsg.PARAMS_ERROR); WXSDKManager.getInstance().callback(mWXSDKInstance.getInstanceId(), errorCallback, options); } private WXLocationListener findLocation(String watchId, String sucCallback, String errorCallback, boolean enableHighAccuracy, boolean enableAddress) { // WXLogUtils.d(TAG, "into--[findLocation] mWatchId:" + watchId + "\nsuccessCallback:" + sucCallback + "\nerrorCallback:" + errorCallback + "\nenableHighAccuracy:" + enableHighAccuracy + "\nmEnableAddress:" + enableAddress); if (mLocationManager == null) { mLocationManager = (LocationManager) mWXSDKInstance.getContext() .getSystemService(Context.LOCATION_SERVICE); } Criteria criteria = new Criteria(); if (enableHighAccuracy) { criteria.setAccuracy(Criteria.ACCURACY_COARSE); } //String provider = locationManager.getBestProvider(criteria, false); if (ActivityCompat.checkSelfPermission(mWXSDKInstance.getContext(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mWXSDKInstance.getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) { WXLocationListener WXLocationListener = new WXLocationListener(mLocationManager, mWXSDKInstance, watchId, sucCallback, errorCallback, enableAddress); mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, MIN_TIME, MIN_DISTANCE, WXLocationListener); mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, MIN_TIME, MIN_DISTANCE, WXLocationListener); return WXLocationListener; } else { Map<String, Object> options = new HashMap<>(); options.put(ERROR_CODE, ErrorCode.NO_PERMISSION_ERROR); options.put(ERROR_MSG, ErrorMsg.NO_PERMISSION_ERROR); WXSDKManager.getInstance().callback(mWXSDKInstance.getInstanceId(), errorCallback, options); } return null; } @Override public void watchPosition(final String successCallback, final String errorCallback, final String params) { WXLogUtils.d("into--[watchPosition] successCallback:" + successCallback + " errorCallback:" + errorCallback + "\nparams:" + params); if (!TextUtils.isEmpty(params)) { try { org.json.JSONObject jsObj = new org.json.JSONObject(params); boolean enableHighAccuracy = jsObj.optBoolean("enableHighAccuracy"); boolean enableAddress = jsObj.optBoolean("address"); String id = UUID.randomUUID().toString(); WXLocationListener listener = findLocation(id, successCallback, errorCallback, enableHighAccuracy, enableAddress); if (listener != null) { mRegisterSucCallbacks.put(id, listener); } return; } catch (JSONException e) { WXLogUtils.e(TAG, e); } } Map<String, Object> options = new HashMap<>(); options.put(ERROR_CODE, ErrorCode.PARAMS_ERROR); options.put(ERROR_MSG, ErrorMsg.PARAMS_ERROR); WXSDKManager.getInstance().callback(mWXSDKInstance.getInstanceId(), errorCallback, options); } @Override public void clearWatch(String watchId) { WXLogUtils.d("into--[clearWatch] mWatchId:" + watchId); if (mWXSDKInstance == null || mWXSDKInstance.isDestroy() || mLocationManager == null) { return; } if (ActivityCompat.checkSelfPermission(mWXSDKInstance.getContext(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mWXSDKInstance.getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) { WXLocationListener listener = mRegisterSucCallbacks.get(watchId); if (listener != null) { listener.destroy(); mLocationManager.removeUpdates(listener); } mRegisterSucCallbacks.remove(watchId); } } @Override public void destroy() { WXLogUtils.d("into--[destroy]"); if (mWXSDKInstance == null || mWXSDKInstance.isDestroy() || mLocationManager == null) { return; } if (mWXLocationListeners != null && mWXLocationListeners.size() > 0) { if (ActivityCompat.checkSelfPermission(mWXSDKInstance.getContext(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mWXSDKInstance.getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) { for (WXLocationListener listener : mWXLocationListeners) { if (listener != null) { listener.destroy(); mLocationManager.removeUpdates(listener); } } mWXLocationListeners.clear(); } } if (mRegisterSucCallbacks != null && mRegisterSucCallbacks.size() > 0) { Collection<WXLocationListener> values = mRegisterSucCallbacks.values(); if (ActivityCompat.checkSelfPermission(mWXSDKInstance.getContext(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mWXSDKInstance.getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) { for (WXLocationListener listener : values) { listener.destroy(); mLocationManager.removeUpdates(listener); } mRegisterSucCallbacks.clear(); } } } static class WXLocationListener implements LocationListener, Handler.Callback { private WXSDKInstance mWXSDKInstance; private String mWatchId; private String mSucCallback; private String mErrorCallback; private boolean mEnableAddress; private Handler mHandler; private LocationManager mLocationManager; private WXLocationListener(LocationManager locationManager, WXSDKInstance instance, String watchId, String sucCallback, String errorCallback, boolean enableAddress) { mWXSDKInstance = instance; this.mWatchId = watchId; this.mSucCallback = sucCallback; this.mErrorCallback = errorCallback; this.mEnableAddress = enableAddress; mHandler = new Handler(this); mLocationManager = locationManager; // WVThreadPool.getInstance().execute(new Runnable() { // public void run() { mHandler.sendEmptyMessageDelayed(TIME_OUT_WHAT, GPS_TIMEOUT); // } // }); } @Override public void onLocationChanged(Location location) { mHandler.removeMessages(TIME_OUT_WHAT); if (WXEnvironment.isApkDebugable()) { WXLogUtils.d(TAG, "into--[onLocationChanged] location:" + location == null ? "Location is NULL!" : location.toString()); } if (mWXSDKInstance == null || mWXSDKInstance.isDestroy()) { return; } if (location != null) { Map<String, Object> result = new HashMap<>(); Map<String, Object> coords = new HashMap<>(); double longitude = location.getLongitude(); double latitude = location.getLatitude(); coords.put("longitude", longitude); coords.put("latitude", latitude); coords.put("altitude", location.getAltitude()); coords.put("accuracy", location.getAccuracy()); coords.put("heading", location.getBearing()); coords.put("speed", location.getSpeed()); result.put(COORDS, coords); // if (mEnableAddress) { Address addr = getAddress(latitude, longitude); Map<String, Object> address = new HashMap<>(); if (addr != null) { address.put("country", addr.getCountryName()); address.put("province", addr.getAdminArea()); address.put("city", addr.getLocality()); address.put("cityCode", addr.getPostalCode()); address.put("area", addr.getSubLocality()); address.put("road", addr.getThoroughfare()); // getAddressLine(0)getAddressLine(1)?getAddressLine(2) StringBuilder sb = new StringBuilder(); for (int i = 1; i <= 2; i++) { if (!TextUtils.isEmpty(addr.getAddressLine(i))) { //null sb.append(addr.getAddressLine(i)); } } address.put("addressLine", sb.toString()); } result.put(ADDRESS, address); } result.put(ERROR_CODE, ErrorCode.SUCCESS); result.put(ERROR_MSG, ErrorMsg.SUCCESS); if (!TextUtils.isEmpty(mWatchId)) { result.put(WATCH_ID, mWatchId); } WXSDKManager.getInstance().callback(mWXSDKInstance.getInstanceId(), mSucCallback, result, TextUtils.isEmpty(mWatchId) ? false : true); } else { Map<String, Object> options = new HashMap<>(); options.put(ERROR_CODE, ErrorCode.LOCATION_ERROR); options.put(ERROR_MSG, ErrorMsg.LOCATION_ERROR); if (!TextUtils.isEmpty(mWatchId)) { options.put(WATCH_ID, mWatchId); } WXSDKManager.getInstance().callback(mWXSDKInstance.getInstanceId(), mErrorCallback, options, TextUtils.isEmpty(mWatchId) ? false : true); } if (TextUtils.isEmpty(mWatchId)) { if (mLocationManager != null && ActivityCompat.checkSelfPermission(mWXSDKInstance.getContext(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mWXSDKInstance.getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) { destroy(); mLocationManager.removeUpdates(this); } } } @Override public void onStatusChanged(String provider, int status, Bundle extras) { WXLogUtils.i(TAG, "into--[onStatusChanged] provider:" + provider + " status:" + status); } @Override public void onProviderEnabled(String provider) { WXLogUtils.i(TAG, "into--[onProviderEnabled] provider:" + provider); } @Override public void onProviderDisabled(String provider) { WXLogUtils.i(TAG, "into--[onProviderDisabled] provider:" + provider); } @Override public boolean handleMessage(Message msg) { if (msg.what == TIME_OUT_WHAT) { if (WXEnvironment.isApkDebugable()) { WXLogUtils.d(TAG, "into--[handleMessage] Location Time Out!"); } if (mWXSDKInstance == null || mWXSDKInstance.isDestroy() || mLocationManager == null) { return false; } if (ActivityCompat.checkSelfPermission(mWXSDKInstance.getContext(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mWXSDKInstance.getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) { mLocationManager.removeUpdates(this); } Map<String, Object> options = new HashMap<>(); options.put(ERROR_CODE, ErrorCode.LOCATION_TIME_OUT); options.put(ERROR_MSG, ErrorMsg.LOCATION_TIME_OUT); if (!TextUtils.isEmpty(mWatchId)) { options.put(WATCH_ID, mWatchId); } WXSDKManager.getInstance().callback(mWXSDKInstance.getInstanceId(), mErrorCallback, options); return true; } return false; } /** * get address info */ private Address getAddress(double latitude, double longitude) { if (WXEnvironment.isApkDebugable()) { WXLogUtils.d(TAG, "into--[getAddress] latitude:" + latitude + " longitude:" + longitude); } try { if (mWXSDKInstance == null || mWXSDKInstance.isDestroy()) { return null; } Geocoder gc = new Geocoder(mWXSDKInstance.getContext()); List<Address> list = gc.getFromLocation(latitude, longitude, 1); if (list != null && list.size() > 0) { return list.get(0); } } catch (Exception e) { WXLogUtils.e(TAG, e); } return null; } public void destroy() { if (mHandler != null) { mHandler.removeMessages(TIME_OUT_WHAT); mWXSDKInstance = null; } } } }