在Android Studio中运行AVD时，应用程序崩溃了。我正在使用API​​ 27在虚拟设备像素5x上运行

Question

当我尝试创建和FusedLocationApi的实例时，它没有得到一些如何识别。它是红色的。它不导入任何类。在我看来，Gradle Build App可能存在一些问题。请检查一下。

这是我的MapActivity.java文件

package com.matt.mapapp;
import android.Manifest;
import android.content.pm.PackageManager;
import android.location.Location;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.common.api.GoogleApiClient;
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.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;

public class MapsActivity extends FragmentActivity implements             
OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks,     
GoogleApiClient.OnConnectionFailedListener, LocationListener {

private GoogleMap mMap;
private LocationRequest locationRequest;
private GoogleApiClient client;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_maps);
    // Obtain the SupportMapFragment and get notified when the map is ready to be used.
    SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
    mapFragment.getMapAsync(this);
}


@Override
public void onMapReady(GoogleMap googleMap) {
    mMap = googleMap;
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
       String[] permissions,
        buildGoogleApiClient();
        mMap.setMyLocationEnabled(true);

    }

}
private synchronized void buildGoogleApiClient(){
    client = new GoogleApiClient.Builder(this)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .addApi(LocationServices.API)
            .build();
    client.connect();
}


@Override
public void onLocationChanged(Location location) {
    locationRequest = new LocationRequest();
    locationRequest.setInterval(1000);
    locationRequest.setFastestInterval(1000);
    locationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);

    if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED){
        LocationRequest.FusedLocationApi.requestlocationUpdates(client, locationRequest, this);
    }


}

@Override
public void onConnected(@Nullable Bundle bundle) {

}

@Override
public void onConnectionSuspended(int i) {

}

@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {

}
}

这是我的构建gradle（模块应用）文件。在编译时似乎存在一些问题，因为没有像compile这样的命令

apply plugin: 'com.android.application'

   android {
       compileSdkVersion 26
       defaultConfig {
           applicationId "com.matt.mapapp"
           minSdkVersion 22
           targetSdkVersion 26
           versionCode 1
           versionName "1.0"
           testInstrumentationRunner               
"android.support.test.runner.AndroidJUnitRunner"
       }
       buildTypes {
           release {
               minifyEnabled false
               proguardFiles getDefaultProguardFile('proguard-android.txt'),        
'proguard-rules.pro'
           }
       }
   }

   dependencies {
       implementation fileTree(dir: 'libs', include: ['*.jar'])
       implementation 'com.android.support:appcompat-v7:26.0.0-beta1'
       implementation 'com.google.android.gms:play-services-maps:11.0.4'
       implementation 'com.google.android.gms:play-services-location:11.0.4'
       testImplementation 'junit:junit:4.12'
       androidTestImplementation 'com.android.support.test:runner:0.5'
       androidTestImplementation'com.android.support.test.espresso:espresso-core:2.2.2'
}

请检查出来并告诉我背后的原因。我正在关注如何创建基于地图的应用程序的视频教程，突然当我到达某个点使用Fused Location Api时，我被卡住了。本教程中的Build Gradle代码与我的不同，所以我认为这可能是FusedLocationApi无法正常工作的原因。

Answer 1

虽然创建基于Google地图的应用程序从不使用虚拟设备，因为它在大多数情况下都会出错，而应该连接到带有USB调试功能的Android手机。为此，您必须转到手机设置的部分，然后单击构建版本或内部版本号7或者说您成为开发人员所需的次数，而不是返回主要设置并单击开发人员选项从那里你必须打开USB调试。现在你的手机会要求连接验证到PC点击接受并勾选记住我的选择。现在，您将能够在所有列出的虚拟设备上方看到您的手机，并且您可以在手机中安装该应用。 Thnaks。

如果有帮助，请告诉我......