我正在开发一个应用程序，需要集成GPS位置。我想以编程方式切换GPS。条件是：我不想将用户发送到“设置”面板以启用它。我想强有力地启用它或单个提示将起作用（类似于Ola Cabs Android应用程序）。在这个网站上有很多问题，但每个人都在寻找像Ola Cabs app这样的类似功能。所以我已经启动了这个帖子，以便我们所有人都清楚。
答案 0 :(得分：9)
这是我的100％工作代码首先将此依赖项compile 'com.google.android.gms:play-services:9.2.1'添加到build.gradle（模块：应用程序）
之后创建名为StartLocationAlert.java的类并复制此代码并粘贴到此文件
import android.app.Activity;
import android.content.IntentSender;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.util.Log;
import android.widget.Toast;
import com.example.googlemappromt.MainActivity;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.PendingResult;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.location.LocationSettingsRequest;
import com.google.android.gms.location.LocationSettingsResult;
import com.google.android.gms.location.LocationSettingsStates;
import com.google.android.gms.location.LocationSettingsStatusCodes;
import com.google.android.gms.vision.barcode.Barcode;
/**
* Created by Anirudh on 20/07/16.
*/
public class StartLocationAlert implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
Activity context;
protected static final int REQUEST_CHECK_SETTINGS = 0x1;
GoogleApiClient googleApiClient;
public StartLocationAlert(Activity context) {
this.context = context;
googleApiClient = getInstance();
if(googleApiClient != null){
//googleApiClient.connect();
settingsrequest();
googleApiClient.connect();
}
}
public GoogleApiClient getInstance(){
GoogleApiClient mGoogleApiClient = new GoogleApiClient.Builder(context).addConnectionCallbacks(this).addOnConnectionFailedListener(this).addApi(LocationServices.API).build();
return mGoogleApiClient;
}
public void settingsrequest()
{
Log.e("settingsrequest","Comes");
LocationRequest locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(30 * 1000);
locationRequest.setFastestInterval(5 * 1000);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(locationRequest);
builder.setAlwaysShow(true); //this is the key ingredient
PendingResult<LocationSettingsResult> result =
LocationServices.SettingsApi.checkLocationSettings(googleApiClient, builder.build());
result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
@Override
public void onResult(LocationSettingsResult result) {
final Status status = result.getStatus();
final LocationSettingsStates state = result.getLocationSettingsStates();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
// All location settings are satisfied. The client can initialize location
// requests here.
// Log.e("Application","Button Clicked");
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
// Location settings are not satisfied. But could be fixed by showing the user
// a dialog.
// Log.e("Application","Button Clicked1");
try {
// Show the dialog by calling startResolutionForResult(),
// and check the result in onActivityResult().
status.startResolutionForResult(context, REQUEST_CHECK_SETTINGS);
} catch (IntentSender.SendIntentException e) {
// Ignore the error.
Log.e("Applicationsett",e.toString());
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
// Location settings are not satisfied. However, we have no way to fix the
// settings so we won't show the dialog.
//Log.e("Application","Button Clicked2");
Toast.makeText(context, "Location is Enabled", Toast.LENGTH_SHORT).show();
break;
}
}
});
}
@Override
public void onConnected(@Nullable Bundle bundle) {
/* MainActivity mm = new MainActivity();
mm.requestLocationUpdates();*/
Toast.makeText(context , "Connected", Toast.LENGTH_SHORT).show();
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
}
以上类的用法如下所示
@Override
protected void onResume() {
super.onResume();
Activity mContext = MainActivity.this //change this your activity name
StartLocationAlert startLocationAlert = new StartLocationAlert(mContext);
requestLocationUpdates();
}
请勿忘记在AndroidManifest.xml文件中添加以下权限，否则可能无法正常使用
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
希望这可以帮到你......
答案 1 :(得分：7)
检查以下代码。首先，它将检查位置是否已启用，并将提示用户启用该位置。
private GoogleApiClient googleApiClient;
final static int REQUEST_LOCATION = 199;
// check whether gps is enabled
public boolean noLocation() {
final LocationManager manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
// buildAlertMessageNoGps();
enableLoc();
return true;
}
return false;
}
private void enableLoc() {
if (googleApiClient == null) {
googleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(new GoogleApiClient.OnConnectionFailedListener() {
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Timber.v("Location error " + connectionResult.getErrorCode());
}
}).build();
googleApiClient.connect();
LocationRequest locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(30 * 1000);
locationRequest.setFastestInterval(5 * 1000);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(locationRequest);
builder.setAlwaysShow(true);
PendingResult<LocationSettingsResult> result =
LocationServices.SettingsApi.checkLocationSettings(googleApiClient, builder.build());
result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
@Override
public void onResult(LocationSettingsResult result) {
final Status status = result.getStatus();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
try {
// Show the dialog by calling startResolutionForResult(),
// and check the result in onActivityResult().
status.startResolutionForResult(
(Activity) context, REQUEST_LOCATION);
} catch (IntentSender.SendIntentException e) {
// Ignore the error.
}
break;
}
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case REQUEST_LOCATION:
switch (resultCode) {
case Activity.RESULT_CANCELED: {
// The user was asked to change settings, but chose not to
finish();
break;
}
default: {
break;
}
}
break;
}
}
}
答案 2 :(得分：1)
我已根据Anirudh的答案创建了一个库。
简短指南如何使用它：
将添加到build.gradle文件中：
compile 'net.alexandroid.utils:gps:1.6'
实施 GpsStatusDetectorCallBack界面。
实施界面方法：onGpsSettingStatus和onGpsAlertCanceledByUser
创建实例变量：
private GpsStatusDetector mGpsStatusDetector;
在onCreate()实例化：
mGpsStatusDetector = new GpsStatusDetector(this);
如果需要添加，您需要检查状态并显示对话框：
mGpsStatusDetector.checkGpsStatus();
覆盖 onActivityResult并添加：
mGpsStatusDetector.checkOnActivityResult(requestCode, resultCode);
有关该库的更多信息：https://github.com/Pulimet/GpsDetector-Library
示例：
public class MainActivity extends AppCompatActivity implements GpsStatusDetector.GpsStatusDetectorCallBack {
private GpsStatusDetector mGpsStatusDetector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mGpsStatusDetector = new GpsStatusDetector(this);
mGpsStatusDetector.checkLocationSettingStatus();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
mGpsStatusDetector.checkOnActivityResult(requestCode, resultCode);
}
@Override
public void onGpsSettingStatus(boolean enabled) {
Log.d("TAG", "onGpsSettingStatus: " + enabled);
}
@Override
public void onGpsAlertCanceledByUser() {
Log.d("TAG", "onGpsAlertCanceledByUser");
}
}
答案 3 :(得分：0)
我在这里有用户代码
private void turnGPSOn(){
String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
if(!provider.contains("gps")){ //if gps is disabled
final Intent poke = new Intent();
poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
poke.addCategory(Intent.CATEGORY_ALTERNATIVE);
poke.setData(Uri.parse("3"));
sendBroadcast(poke);
}
}
private void turnGPSOff(){
String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
if(provider.contains("gps")){ //if gps is enabled
final Intent poke = new Intent();
poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
poke.addCategory(Intent.CATEGORY_ALTERNATIVE);
poke.setData(Uri.parse("3"));
sendBroadcast(poke);
}
}
清单文件中的权限：
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
答案 4 :(得分：0)
Ola Cabs正在使用新发布的Settings API来实现此功能。根据新API，用户无需导航到设置页面即可启用位置服务，从而实现无缝集成。请阅读以下内容了解更多详情：
https://developers.google.com/android/reference/com/google/android/gms/location/SettingsApi
答案 5 :(得分：0)
package com.example.user.myGPS;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.content.IntentSender;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.PendingResult;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.location.LocationSettingsRequest;
import com.google.android.gms.location.LocationSettingsResult;
import com.google.android.gms.location.LocationSettingsStates;
import com.google.android.gms.location.LocationSettingsStatusCodes;
public class MainActivity extends AppCompatActivity {
private GoogleApiClient googleApiClient;
final int REQUEST_CHECK_SETTINGS = 0x1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//-------Code to turn on GPS------------------
if (googleApiClient == null) {
googleApiClient = new GoogleApiClient.Builder(MainActivity.this)
.addApi(LocationServices.API).build();
googleApiClient.connect();
LocationRequest locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(30 * 1000);
locationRequest.setFastestInterval(5 * 1000);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder().addLocationRequest(locationRequest);
builder.setAlwaysShow(true);
builder.setNeedBle(true);
PendingResult<LocationSettingsResult> result = LocationServices.SettingsApi.checkLocationSettings(googleApiClient, builder.build());
result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
@Override
public void onResult(LocationSettingsResult result) {
final com.google.android.gms.common.api.Status status = result.getStatus();
final LocationSettingsStates state = result.getLocationSettingsStates();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
try
{
status.startResolutionForResult(MainActivity.this,REQUEST_CHECK_SETTINGS);
} catch (IntentSender.SendIntentException e) {}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
break;
}
}
});
}
}
}