查找用户位置 [英] Finding user location
本文介绍了查找用户位置的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试为我的天气应用获取用户位置信息。我目前无法这样做，并试图关注Google最新的位置指南，以及 https://guides.codepath.com/android/Retrieving-Location-with-LocationServices-API 。
import android.Manifest;
导入android.content.Context;
导入android.content.pm.PackageManager;
导入android.graphics.drawable.Drawable;
导入android.location.Location;
导入android.net.ConnectivityManager;
导入android.net.NetworkInfo;
导入android.os.Bundle;
导入android.support.annotation.NonNull;
导入android.support.annotation.Nullable;
导入android.support.v4.app.ActivityCompat;
导入android.support.v7.app.AppCompatActivity;
导入android.util.Log;
导入android.view.View;
导入android.widget.ImageView;
导入android.widget.ProgressBar;
导入android.widget.TextView;
导入android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
导入butterknife.BindView;
导入butterknife.ButterKnife;
导入okhttp3.Call;
导入okhttp3.Callback;
导入okhttp3.OkHttpClient;
导入okhttp3.Request;
导入okhttp3.Response;
public class MainActivity extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks，GoogleApiClient.OnConnectionFailedListener {
public static final String TAG = MainActivity.class.getSimpleName（）;
Public CurrentWeather mCurrentWeather;
私有GoogleApiClient mGoogleApiClient;
private LocationRequest mLocationRequest;
双纬度;
双经度;
@BindView（R.id.timeLabel）
TextView mTimeLabel;
@BindView（R.id.temperatureLabel）
TextView mTemperatureLabel;
@BindView（R.id.humidityValue）
TextView mHumidityValue;
@BindView（R.id.precipValue）
TextView mPrecipValue;
@BindView（R.id.summaryTextView）
TextView mSummaryLabel;
@BindView（R.id.iconImageView）
ImageView mIconImageView;
@BindView（R.id.refreshImageView）
ImageView mRefreshImageView;
@BindView（R.id.progressBar）
ProgressBar mProgressBar;
@Override
protected void onCreate（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）;
setContentView（R.layout.activity_main）;
mGoogleApiClient = new GoogleApiClient.Builder（this）
.addApi（LocationServices.API）
.addConnectionCallbacks（this）
.addOnConnectionFailedListener（this）.build（） ;
//导入视图变量
ButterKnife.bind（this）;
//将默认进度条设置为不可见
mProgressBar.setVisibility（View.INVISIBLE）;
//为刷新按钮创建onClick
mRefreshImageView.setOnClickListener（new View.OnClickListener（）{
@Override
public void onClick（View v）{
getForecast（经度，纬度）;
}
}）;
getForecast（经度，纬度）;
@Override
protected void onStart（）{
super.onStart（）;
mGoogleApiClient.connect（）;
$ b @覆盖
保护无效onStop（）{
if（mGoogleApiClient！= null）{
mGoogleApiClient.disconnect（）;
}
super.onStop（）;
}
@Override
public void onConnected（@Nullable Bundle bundle）{
if（ActivityCompat.checkSelfPermission（this，Manifest.permission.ACCESS_FINE_LOCATION ）！= PackageManager.PERMISSION_GRANTED&&& ActivityCompat.checkSelfPermission（this，Manifest.permission.ACCESS_COARSE_LOCATION）！= PackageManager.PERMISSION_GRANTED）{
// TODO：考虑调用
// ActivityCompat＃requestPermissions
//在这里请求丢失的权限，然后覆盖
// public void onRequestPermissionsResult（int requestCode，String [] permissions，
// int [] grantResults）
// to处理用户授予权限的情况。有关更多详细信息，请参阅文档
//获取ActivityCompat＃requestPermissions。
return;
}
位置mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation（mGoogleApiClient）;
if（mCurrentLocation！= null）{
Log.d（DEBUG，current location：+ mCurrentLocation.toString（））;
latitude = mCurrentLocation.getLatitude（）;
longitude = mCurrentLocation.getLongitude（）;
}
}
@Override
public void onConnectionSuspended（int i）{
if（i == CAUSE_SERVICE_DISCONNECTED）{
Toast。 makeText（this，Disconnected。Please re-connect。，Toast.LENGTH_SHORT）.show（）;
} else if（i == CAUSE_NETWORK_LOST）{
Toast.makeText（this，Network lost。Please re-connect。，Toast.LENGTH_SHORT）.show（）;
}
}
我想要实现的是获得lat和长坐标，然后将它们保存到全局变量中，以便在调用 getForecast（）时使用。
AndroidManifest.xml：
<？xml version =1.0encoding =utf-8？>
< manifest package =com.leetinsider.skymate
xmlns：android =http://schemas.android.com/apk/res/android>
<使用权限android：name =android.permission.INTERNET/>
< uses-permission android：name =android.permission.ACCESS_NETWORK_STATE/>
< uses-permission android：name =android.permission.ACCESS_COARSE_LOCATION/>
< uses-permission android：name =android.permission.ACCESS_FINE_LOCATION/>
< application
android：allowBackup =true
android：icon =@ mipmap / ic_launcher
android：label =@ string / app_name
android：supportsRtl =true
android：theme =@ style / AppTheme>
< activity android：name =。MainActivity
android：screenOrientation =portrait>
< intent-filter>
< category android：name =android.intent.category.LAUNCHER/>
< / intent-filter>
< / activity>
< / application>
< / manifest>
解决方案
请尝试以下解决方案：
-
首先，确保您在活动类中实现了正确的LocationListener接口：
com.google.android.gms.location.LocationListener
然后请求适当的权限以支持运行 v6.0
private static final int MY_PERMISSION_REQUEST_READ_COARSE_LOCATION = 102;
然后请求权限：
@Override
public void onConnected（@Nullable Bundle bundle）{
//您使用的是什么版本的Android？
// Answer = 6.0
if（ActivityCompat.checkSelfPermission（this，Manifest.permission.ACCESS_COARSE_LOCATION）！= PackageManager.PERMISSION_GRANTED）{
ActivityCompat.requestPermissions（thisActivity，
new String [] {Manifest.permission.ACCESS_COARSE_LOCATION}，
MY_PERMISSION_REQUEST_READ_COARSE_LOCATION）;
}
位置mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation（mGoogleApiClient）;
if（mCurrentLocation！= null）{
Log.d（TAG，当前位置：+ mCurrentLocation.toString（））;
latitude = mCurrentLocation.getLatitude（）;
longitude = mCurrentLocation.getLongitude（）;
}
startLocationUpdates（）;
要在运行时从权限请求获得结果，方法：
$ $ $ $ $ $ $ $ $ $ $ $ $ public void onRequestPermissionsResult（int requestCode，
String permissions []，int [ ] grantResults）{
switch（requestCode）{
case MY_PERMISSION_REQUEST_READ_COARSE_LOCATION：~~~~~~~~~~~
//如果请求被取消，结果数组是空。
if（grantResults.length> 0
&&& amp; grantResults [0] == PackageManager.PERMISSION_GRANTED）{
//授予权限，耶！做你需要做的
//联系人相关的任务。
} else {
// permission denied，boo！禁用依赖此权限的
//功能。
}
break;
}
//其他'case'行检查其他
//权限此应用可能请求
}
}
然后，您的方法更新位置：
protected void startLocationUpdates（）{
mLocationRequest = LocationRequest.create（）
.setPriority（LocationRequest.PRIORITY_HIGH_ACCURACY）
.setInterval（UPDATE_INTERVAL）
.setFastestInterval（ FASTEST_INTERVAL）;
if（ActivityCompat.checkSelfPermission（this，Manifest.permission.ACCESS_COARSE_LOCATION）！= PackageManager.PERMISSION_GRANTED）{
//在这里请求权限已经在
return之上;
}
//这里存在问题，因为LocationListener被强制转换为活动
LocationServices.FusedLocationApi.requestLocationUpdates（mGoogleApiClient，mLocationRequest，this）;
}
这应该做到这一点;
快乐编码！
I am trying to get user location for my weather app. I am currently unable to do so and have tried to follow both the Google Last known location guide, as well as https://guides.codepath.com/android/Retrieving-Location-with-LocationServices-API.
import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.graphics.drawable.Drawable;
import android.location.Location;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
import butterknife.BindView;
import butterknife.ButterKnife;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
public class MainActivity extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
public static final String TAG = MainActivity.class.getSimpleName();
public CurrentWeather mCurrentWeather;
private GoogleApiClient mGoogleApiClient;
private LocationRequest mLocationRequest;
double latitude;
double longitude;
@BindView(R.id.timeLabel)
TextView mTimeLabel;
@BindView(R.id.temperatureLabel)
TextView mTemperatureLabel;
@BindView(R.id.humidityValue)
TextView mHumidityValue;
@BindView(R.id.precipValue)
TextView mPrecipValue;
@BindView(R.id.summaryTextView)
TextView mSummaryLabel;
@BindView(R.id.iconImageView)
ImageView mIconImageView;
@BindView(R.id.refreshImageView)
ImageView mRefreshImageView;
@BindView(R.id.progressBar)
ProgressBar mProgressBar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this).build();
// Import view variables
ButterKnife.bind(this);
// Set default progressbar to invisible
mProgressBar.setVisibility(View.INVISIBLE);
// Create onClick for the refresh button
mRefreshImageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
getForecast(latitude, longitude);
}
});
getForecast(latitude, longitude);
}
@Override
protected void onStart() {
super.onStart();
mGoogleApiClient.connect();
}
@Override
protected void onStop() {
if (mGoogleApiClient != null) {
mGoogleApiClient.disconnect();
}
super.onStop();
}
@Override
public void onConnected(@Nullable Bundle bundle) {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
Location mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if(mCurrentLocation != null){
Log.d("DEBUG", "current location: " + mCurrentLocation.toString());
latitude = mCurrentLocation.getLatitude();
longitude = mCurrentLocation.getLongitude();
}
}
@Override
public void onConnectionSuspended(int i) {
if (i == CAUSE_SERVICE_DISCONNECTED) {
Toast.makeText(this, "Disconnected. Please re-connect.", Toast.LENGTH_SHORT).show();
} else if (i == CAUSE_NETWORK_LOST) {
Toast.makeText(this, "Network lost. Please re-connect.", Toast.LENGTH_SHORT).show();
}
}
What I am trying to achieve is to get the lat and long coordinates and then save them to the global variables to later be used when making the call to getForecast().
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest package="com.leetinsider.skymate"
xmlns:android="http://schemas.android.com/apk/res/android">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>
解决方案
Try the following solution:
First, make sure you have implemented the correct LocationListener interface in your activity class:
com.google.android.gms.location.LocationListener
Then request the appropriate permissions to support Android devices running v6.0
private static final int MY_PERMISSION_REQUEST_READ_COARSE_LOCATION = 102;
Then request permission:
@Override
public void onConnected(@Nullable Bundle bundle) {
// what version of android are you using?
// Answer = 6.0
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED ) {
ActivityCompat.requestPermissions(thisActivity,
new String[]{Manifest.permission.ACCESS_COARSE_LOCATION},
MY_PERMISSION_REQUEST_READ_COARSE_LOCATION);
}
Location mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (mCurrentLocation != null) {
Log.d(TAG, "current location: " + mCurrentLocation.toString());
latitude = mCurrentLocation.getLatitude();
longitude = mCurrentLocation.getLongitude();
}
startLocationUpdates();
}
To get the results from permission requests at runtime, override this method:
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSION_REQUEST_READ_COARSE_LOCATION:~~~~~~~~~~~
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay! Do the
// contacts-related task you need to do.
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
}
break;
}
// other 'case' lines to check for other
// permissions this app might request
}
}
Then, your method to update location:
protected void startLocationUpdates() {
mLocationRequest = LocationRequest.create()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(UPDATE_INTERVAL)
.setFastestInterval(FASTEST_INTERVAL);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
//request permission here like you already do above
return;
}
//there is a problem here because LocationListener is cast as an activity
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
This should do it;
Happy coding!
这篇关于查找用户位置的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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