Google Maps API教程 - CurrentPlaceDetailsOnMap - placeResult.addOnCompleteListener上的task.isSuccessful问题
我刚刚克隆了整个android-samples库并尝试运行CurrentPlaceDetailsOnMap项目。我已经完成了给我的所有说明，包括创建自己的API。但是，每次我点击Get Place（这会触发onOptionsItemSelected方法然后触发showCurrentPlace上的Activity），我都会收到此错误：
E/MapsActivityCurrentPlace: Exception: %s
com.google.android.gms.common.api.ApiException: 13: ERROR
at com.google.android.gms.common.internal.zzb.zzx(Unknown Source)
at com.google.android.gms.common.internal.zzbj.zzy(Unknown Source)
at com.google.android.gms.common.internal.zzbk.zzp(Unknown Source)
at com.google.android.gms.common.api.internal.zzs.zzc(Unknown Source)
at com.google.android.gms.common.api.internal.zzs.setResult(Unknown Source)
at com.google.android.gms.location.places.zzm.zzao(Unknown Source)
at com.google.android.gms.location.places.internal.zzx.onTransact(Unknown Source)
at android.os.Binder.execTransact(Binder.java:573)
我没有改变任何事情。有谁知道这可能是什么原因导致这种情况不起作用？
我的活动：
package com.example.currentplacedetailsonmap;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.TextView;
import com.google.android.gms.location.FusedLocationProviderClient;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.location.places.GeoDataClient;
import com.google.android.gms.location.places.PlaceDetectionClient;
import com.google.android.gms.location.places.PlaceLikelihood;
import com.google.android.gms.location.places.PlaceLikelihoodBufferResponse;
import com.google.android.gms.location.places.Places;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
/**
* An activity that displays a map showing the place at the device's current location.
*/
public class MapsActivityCurrentPlace extends AppCompatActivity
implements OnMapReadyCallback {
private static final String TAG = MapsActivityCurrentPlace.class.getSimpleName();
private GoogleMap mMap;
private CameraPosition mCameraPosition;
// The entry points to the Places API.
private GeoDataClient mGeoDataClient;
private PlaceDetectionClient mPlaceDetectionClient;
// The entry point to the Fused Location Provider.
private FusedLocationProviderClient mFusedLocationProviderClient;
// A default location (Sydney, Australia) and default zoom to use when location permission is
// not granted.
private final LatLng mDefaultLocation = new LatLng(-33.8523341, 151.2106085);
private static final int DEFAULT_ZOOM = 15;
private static final int PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION = 1;
private boolean mLocationPermissionGranted;
// The geographical location where the device is currently located. That is, the last-known
// location retrieved by the Fused Location Provider.
private Location mLastKnownLocation;
// Keys for storing activity state.
private static final String KEY_CAMERA_POSITION = "camera_position";
private static final String KEY_LOCATION = "location";
// Used for selecting the current place.
private static final int M_MAX_ENTRIES = 5;
private String[] mLikelyPlaceNames;
private String[] mLikelyPlaceAddresses;
private String[] mLikelyPlaceAttributions;
private LatLng[] mLikelyPlaceLatLngs;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Retrieve location and camera position from saved instance state.
if (savedInstanceState != null) {
mLastKnownLocation = savedInstanceState.getParcelable(KEY_LOCATION);
mCameraPosition = savedInstanceState.getParcelable(KEY_CAMERA_POSITION);
}
// Retrieve the content view that renders the map.
setContentView(R.layout.activity_maps);
// Construct a GeoDataClient.
mGeoDataClient = Places.getGeoDataClient(this, null);
// Construct a PlaceDetectionClient.
mPlaceDetectionClient = Places.getPlaceDetectionClient(this, null);
// Construct a FusedLocationProviderClient.
mFusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(this);
// Build the map.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
/**
* Saves the state of the map when the activity is paused.
*/
@Override
protected void onSaveInstanceState(Bundle outState) {
if (mMap != null) {
outState.putParcelable(KEY_CAMERA_POSITION, mMap.getCameraPosition());
outState.putParcelable(KEY_LOCATION, mLastKnownLocation);
super.onSaveInstanceState(outState);
}
}
/**
* Sets up the options menu.
* @param menu The options menu.
* @return Boolean.
*/
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.current_place_menu, menu);
return true;
}
/**
* Handles a click on the menu option to get a place.
* @param item The menu item to handle.
* @return Boolean.
*/
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == R.id.option_get_place) {
showCurrentPlace();
}
return true;
}
/**
* Manipulates the map when it's available.
* This callback is triggered when the map is ready to be used.
*/
@Override
public void onMapReady(GoogleMap map) {
mMap = map;
// Use a custom info window adapter to handle multiple lines of text in the
// info window contents.
mMap.setInfoWindowAdapter(new GoogleMap.InfoWindowAdapter() {
@Override
// Return null here, so that getInfoContents() is called next.
public View getInfoWindow(Marker arg0) {
return null;
}
@Override
public View getInfoContents(Marker marker) {
// Inflate the layouts for the info window, title and snippet.
View infoWindow = getLayoutInflater().inflate(R.layout.custom_info_contents,
(FrameLayout) findViewById(R.id.map), false);
TextView title = ((TextView) infoWindow.findViewById(R.id.title));
title.setText(marker.getTitle());
TextView snippet = ((TextView) infoWindow.findViewById(R.id.snippet));
snippet.setText(marker.getSnippet());
return infoWindow;
}
});
// Prompt the user for permission.
getLocationPermission();
// Turn on the My Location layer and the related control on the map.
updateLocationUI();
// Get the current location of the device and set the position of the map.
getDeviceLocation();
}
/**
* Gets the current location of the device, and positions the map's camera.
*/
private void getDeviceLocation() {
/*
* Get the best and most recent location of the device, which may be null in rare
* cases when a location is not available.
*/
try {
if (mLocationPermissionGranted) {
Task<Location> locationResult = mFusedLocationProviderClient.getLastLocation();
locationResult.addOnCompleteListener(this, new OnCompleteListener<Location>() {
@Override
public void onComplete(@NonNull Task<Location> task) {
if (task.isSuccessful()) {
// Set the map's camera position to the current location of the device.
mLastKnownLocation = task.getResult();
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(
new LatLng(mLastKnownLocation.getLatitude(),
mLastKnownLocation.getLongitude()), DEFAULT_ZOOM));
} else {
Log.d(TAG, "Current location is null. Using defaults.");
Log.e(TAG, "Exception: %s", task.getException());
mMap.moveCamera(CameraUpdateFactory
.newLatLngZoom(mDefaultLocation, DEFAULT_ZOOM));
mMap.getUiSettings().setMyLocationButtonEnabled(false);
}
}
});
}
} catch (SecurityException e) {
Log.e("Exception: %s", e.getMessage());
}
}
/**
* Prompts the user for permission to use the device location.
*/
private void getLocationPermission() {
/*
* Request location permission, so that we can get the location of the
* device. The result of the permission request is handled by a callback,
* onRequestPermissionsResult.
*/
if (ContextCompat.checkSelfPermission(this.getApplicationContext(),
android.Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
mLocationPermissionGranted = true;
} else {
ActivityCompat.requestPermissions(this,
new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION},
PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION);
}
}
/**
* Handles the result of the request for location permissions.
*/
@Override
public void onRequestPermissionsResult(int requestCode,
@NonNull String permissions[],
@NonNull int[] grantResults) {
mLocationPermissionGranted = false;
switch (requestCode) {
case PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
mLocationPermissionGranted = true;
}
}
}
updateLocationUI();
}
/**
* Prompts the user to select the current place from a list of likely places, and shows the
* current place on the map - provided the user has granted location permission.
*/
private void showCurrentPlace() {
if (mMap == null) {
return;
}
if (mLocationPermissionGranted) {
// Get the likely places - that is, the businesses and other points of interest that
// are the best match for the device's current location.
@SuppressWarnings("MissingPermission") final
Task<PlaceLikelihoodBufferResponse> placeResult =
mPlaceDetectionClient.getCurrentPlace(null);
placeResult.addOnCompleteListener
(new OnCompleteListener<PlaceLikelihoodBufferResponse>() {
@Override
public void onComplete(@NonNull Task<PlaceLikelihoodBufferResponse> task) {
if (task.isSuccessful() && task.getResult() != null) {
PlaceLikelihoodBufferResponse likelyPlaces = task.getResult();
// Set the count, handling cases where less than 5 entries are returned.
int count;
if (likelyPlaces.getCount() < M_MAX_ENTRIES) {
count = likelyPlaces.getCount();
} else {
count = M_MAX_ENTRIES;
}
int i = 0;
mLikelyPlaceNames = new String[count];
mLikelyPlaceAddresses = new String[count];
mLikelyPlaceAttributions = new String[count];
mLikelyPlaceLatLngs = new LatLng[count];
for (PlaceLikelihood placeLikelihood : likelyPlaces) {
// Build a list of likely places to show the user.
mLikelyPlaceNames[i] = (String) placeLikelihood.getPlace().getName();
mLikelyPlaceAddresses[i] = (String) placeLikelihood.getPlace()
.getAddress();
mLikelyPlaceAttributions[i] = (String) placeLikelihood.getPlace()
.getAttributions();
mLikelyPlaceLatLngs[i] = placeLikelihood.getPlace().getLatLng();
i++;
if (i > (count - 1)) {
break;
}
}
// Release the place likelihood buffer, to avoid memory leaks.
likelyPlaces.release();
// Show a dialog offering the user the list of likely places, and add a
// marker at the selected place.
openPlacesDialog();
} else {
Log.e(TAG, "Exception: %s", task.getException());
}
}
});
} else {
// The user has not granted permission.
Log.i(TAG, "The user did not grant location permission.");
// Add a default marker, because the user hasn't selected a place.
mMap.addMarker(new MarkerOptions()
.title(getString(R.string.default_info_title))
.position(mDefaultLocation)
.snippet(getString(R.string.default_info_snippet)));
// Prompt the user for permission.
getLocationPermission();
}
}
/**
* Displays a form allowing the user to select a place from a list of likely places.
*/
private void openPlacesDialog() {
// Ask the user to choose the place where they are now.
DialogInterface.OnClickListener listener = new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// The "which" argument contains the position of the selected item.
LatLng markerLatLng = mLikelyPlaceLatLngs[which];
String markerSnippet = mLikelyPlaceAddresses[which];
if (mLikelyPlaceAttributions[which] != null) {
markerSnippet = markerSnippet + "\n" + mLikelyPlaceAttributions[which];
}
// Add a marker for the selected place, with an info window
// showing information about that place.
mMap.addMarker(new MarkerOptions()
.title(mLikelyPlaceNames[which])
.position(markerLatLng)
.snippet(markerSnippet));
// Position the map's camera at the location of the marker.
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(markerLatLng,
DEFAULT_ZOOM));
}
};
// Display the dialog.
AlertDialog dialog = new AlertDialog.Builder(this)
.setTitle(R.string.pick_place)
.setItems(mLikelyPlaceNames, listener)
.show();
}
/**
* Updates the map's UI settings based on whether the user has granted location permission.
*/
private void updateLocationUI() {
if (mMap == null) {
return;
}
try {
if (mLocationPermissionGranted) {
mMap.setMyLocationEnabled(true);
mMap.getUiSettings().setMyLocationButtonEnabled(true);
} else {
mMap.setMyLocationEnabled(false);
mMap.getUiSettings().setMyLocationButtonEnabled(false);
mLastKnownLocation = null;
getLocationPermission();
}
} catch (SecurityException e) {
Log.e("Exception: %s", e.getMessage());
}
}
}
我的构建Gradle：
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.0"
defaultConfig {
applicationId "com.example.currentplacedetailsonmap"
minSdkVersion 15
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
resValue "string", "google_maps_key", (project.findProperty("GOOGLE_MAPS_API_KEY") ?: "")
}
buildTypes {
debug {
debuggable true
}
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.1.1'
compile 'com.google.android.gms:play-services:11.2.0'
testCompile 'junit:junit:4.12'
}
ANDROID VERSION： - ＆gt; 7.0
3 个答案:
答案 0 :(得分：1)
我遇到了同样的问题。也许我找到了解决方案。您com.google.android.geo.API_KEY中的问题是AndroidManifest.xml。密钥应支持Google Maps Android API和Google Places API for Android。您可以查看https://console.developers.google.com/apis
答案 1 :(得分：0)
我遇到了同样的问题，但在查看代码后，我找到了这个解决方案。
我删除了if语句中的coordinates条件
task.getResult() != null
它在if块内部工作，而不是进入异常块。
答案 2 :(得分：0)
转到Google云端控制台信息中心（获取Google Maps API密钥的位置）并转到Library标签，然后您会找到Google Place API for Android，然后您需要提供该选项以便您的项目可以使用API。
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