android - 如何获得最新版本的Google Play服务？

我正在构建一个需要用户位置的应用程序。为此，我需要使用Google Play服务。每当我在模拟器上运行该应用程序时，它就会告诉我需要更新Google Play服务。这是我的build.gradle文件夹。每当我尝试将Google Play服务更改为高于8.3.0的数字时，我都会收到一条错误消息，说android studio找不到存储库。

apply plugin: 'com.android.application'

android {
compileSdkVersion 23
buildToolsVersion "23.0.1"

defaultConfig {
applicationId "com.example.usinglocationiapi.usinglocationapi"
minSdkVersion 23
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
    minifyEnabled false
    proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.0'
compile 'com.google.android.gms:play-services:8.3.0'



}

这是我的Java代码:

import android.content.Intent;
import android.location.Location;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;


public class MainActivity extends ActionBarActivity  implements     GoogleApiClient.ConnectionCallbacks,     GoogleApiClient.OnConnectionFailedListener, LocationListener {

private static int REQUEST_CODE_RECOVER_PLAY_SERVICES = 200;

private GoogleApiClient mGoogleApiClient;
private Location mLastLocation;
private LocationRequest mLocationRequest;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    if (checkGooglePlayServices()) {
        buildGoogleApiClient();

        //prepare connection request
        createLocationRequest();
    }
}






private boolean checkGooglePlayServices() {

    int checkGooglePlayServices = GooglePlayServicesUtil
            .isGooglePlayServicesAvailable(this);
    if (checkGooglePlayServices != ConnectionResult.SUCCESS) {
          /*
           * google play services is missing or update is required
           *  return code could be
           * SUCCESS,
           * SERVICE_MISSING, SERVICE_VERSION_UPDATE_REQUIRED,
           * SERVICE_DISABLED, SERVICE_INVALID.
           */
        GooglePlayServicesUtil.getErrorDialog(checkGooglePlayServices,
                this, REQUEST_CODE_RECOVER_PLAY_SERVICES).show();

        return false;
    }

    return true;

}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQUEST_CODE_RECOVER_PLAY_SERVICES) {

        if (resultCode == RESULT_OK) {
            // Make sure the app is not already connected or attempting to connect
            if (!mGoogleApiClient.isConnecting() &&
                    !mGoogleApiClient.isConnected()) {
                mGoogleApiClient.connect();
            }
        }else if (resultCode == RESULT_CANCELED) {
            Toast.makeText(this, "Google Play Services must be installed.",
                    Toast.LENGTH_SHORT).show();
            finish();
        }
    }
}

protected synchronized void buildGoogleApiClient() {
    mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .addApi(LocationServices.API)
            .build();

}


@Override
public void onConnected(Bundle bundle) {

    mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
            mGoogleApiClient);
    if (mLastLocation != null) {

        Toast.makeText(this, "Latitude:" + mLastLocation.getLatitude()+", Longitude:"+mLastLocation.getLongitude(),Toast.LENGTH_LONG).show();

    }

    startLocationUpdates();

}

@Override
public void onConnectionSuspended(int i) {

}

@Override
public void onConnectionFailed(ConnectionResult connectionResult) {

}


/* Second part*/

@Override
protected void onStart() {
    super.onStart();

    if (mGoogleApiClient != null) {
        mGoogleApiClient.connect();
    }

}

protected void startLocationUpdates() {
    LocationServices.FusedLocationApi.requestLocationUpdates(
            mGoogleApiClient, mLocationRequest, this);
}

protected void createLocationRequest() {
    mLocationRequest = new LocationRequest();
    mLocationRequest.setInterval(20000);
    mLocationRequest.setFastestInterval(5000);
    mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}

@Override
public void onLocationChanged(Location location) {
    mLastLocation = location;
    Toast.makeText(this, "Update -> Latitude:" + mLastLocation.getLatitude()+", Longitude:"+mLastLocation.getLongitude(),Toast.LENGTH_LONG).show();

}

protected void stopLocationUpdates() {
    if (mGoogleApiClient != null) {
        LocationServices.FusedLocationApi.removeLocationUpdates(
                mGoogleApiClient, this);
    }
}

@Override
protected void onPause() {
    super.onPause();
    stopLocationUpdates();
}

@Override
protected void onStop() {
    super.onStop();

    if (mGoogleApiClient != null) {
        mGoogleApiClient.disconnect();
    }


}

}

最佳答案

如果您的应用使用的是Google Play服务8.3，则还应在onResume()中添加一个验证方法
邀请用户更新或安装版本8.3

    public boolean checkPlayServices() {
    int resultCode = GooglePlayServicesUtil
            .isGooglePlayServicesAvailable(this);
    if (resultCode != ConnectionResult.SUCCESS) {
        if (GooglePlayServicesUtil.isUserRecoverableError(resultCode)) {
            GooglePlayServicesUtil.getErrorDialog(resultCode, this,
                    PLAY_SERVICES_RESOLUTION_REQUEST).show();
        }
        return false;
    }
    return true;
}