要解决Android地理围栏未能在没有位置服务触发的情况下自动触发的问题,你可以使用Google Play服务的Fused Location Provider API来检查设备的位置服务是否可用。以下是一个示例代码,可以帮助你处理这个问题:
import android.Manifest;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GoogleApiAvailability;
import com.google.android.gms.location.Geofence;
import com.google.android.gms.location.GeofencingClient;
import com.google.android.gms.location.GeofencingRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
public class MainActivity extends AppCompatActivity {
private static final int LOCATION_PERMISSION_REQUEST_CODE = 1;
private static final int GOOGLE_PLAY_SERVICES_REQUEST_CODE = 2;
private GeofencingClient geofencingClient;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 初始化GeofencingClient
geofencingClient = LocationServices.getGeofencingClient(this);
// 检查Google Play服务是否可用
if (isGooglePlayServicesAvailable()) {
// 检查设备的位置服务是否已启用
if (isLocationServicesEnabled()) {
// 检查位置权限是否已授予
if (isLocationPermissionGranted()) {
// 开始添加地理围栏
addGeofence();
} else {
// 请求位置权限
requestLocationPermission();
}
} else {
// 打开位置设置界面
openLocationSettings();
}
} else {
// 提示用户安装或更新Google Play服务
Toast.makeText(this, "请安装或更新Google Play服务", Toast.LENGTH_SHORT).show();
}
}
private boolean isGooglePlayServicesAvailable() {
GoogleApiAvailability googleApiAvailability = GoogleApiAvailability.getInstance();
int resultCode = googleApiAvailability.isGooglePlayServicesAvailable(this);
return resultCode == ConnectionResult.SUCCESS;
}
private boolean isLocationServicesEnabled() {
LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
return locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) ||
locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
}
private boolean isLocationPermissionGranted() {
return ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED;
}
private void requestLocationPermission() {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, LOCATION_PERMISSION_REQUEST_CODE);
}
private void openLocationSettings() {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
}
private void addGeofence() {
// 创建一个Geofence对象
Geofence geofence = new Geofence.Builder()
.setRequestId("geofence_id")
.setCircularRegion(37.422, -122.084, 100) // 设置围栏的中心点和半径
.setExpirationDuration(Geofence.NEVER_EXPIRE) // 围栏永不过期
.setTransitionTypes(Geofence.GEOFENCE_TRANSITION_ENTER | Geofence.GEOFENCE_TRANSITION_EXIT) // 设置进入和离开围栏触发事件
.build();
// 创建一个GeofencingRequest对象
GeofencingRequest geofencingRequest = new GeofencingRequest.Builder()
.addGeofence(geofence)
.build();
// 添加地理围栏
Task task = geofencingClient.addGeofences(geofencingRequest, getGeofencePendingIntent());
task.addOnSuccessListener(new OnSuccessListener() {
@Override
public void onSuccess(Void aVoid) {
// 成功添加地理围栏
Toast.makeText(MainActivity.this, "地理围栏已添加", Toast.LENGTH_SHORT).show();
}
});
task.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
// 添加地理围栏失败