Question

所以我几天前开始进行Android开发，目前我正面临着一个我似乎无法解决的问题。我正在尝试使用Google Play服务位置API构建一个可以为我提供纬度和经度位置的应用。我在网上看到了一些教程，还看到了谷歌开发人员培训页面，并构建了一个应用程序来获取我的位置。然而，该应用程序不响应我做的任何事情。

这是我的主要活动：

package com.example.chris.locationfinder;

import android.Manifest;
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.TextView;

import com.google.android.gms.appindexing.AppIndex;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationServices;

public class MainActivity extends AppCompatActivity implements
        GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {

    private static final String TAG = "Error";
    public GoogleApiClient GPlayAPI;
    public Location mLastLocation;
    private TextView mLatitudeText;
    private TextView mLongitudeText;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mLatitudeText = (TextView) findViewById(R.id.lati);
        mLongitudeText =(TextView) findViewById(R.id.longi);
        // ATTENTION: This "addApi(AppIndex.API)"was auto-generated to implement the App Indexing API.
        // See https://g.co/AppIndexing/AndroidStudio for more information.
        GPlayAPI = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .addApi(AppIndex.API).build();
    }

    protected void onStart() {
        GPlayAPI.connect();
        super.onStart();

    }

    protected void onStop() {
        GPlayAPI.disconnect();
        super.onStop();

    }

    public void OnClickUpdate(View view) {

        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return;
        }

        if (mLastLocation==null){

            mLatitudeText.setText("NULL");
            mLongitudeText.setText("NULL");

        }
        else {

            mLatitudeText.setText(Double.toString(mLastLocation.getLatitude()));
            mLongitudeText.setText(Double.toString(mLastLocation.getLongitude()));
        }
    }


    @Override
    public void onConnected(Bundle connectionHint) {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return;
        }

        mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
                GPlayAPI);
    }

    @Override
    public void onConnectionSuspended(int i) {

    }

    @Override
    public void onConnectionFailed(ConnectionResult result) {
        Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = "
                + result.getErrorCode());
    }
}

按钮点击事件会调用

OnClickUpdate。该函数设置两个TextView元素，以便在API能够检索信息时显示由API确定的纬度和经度，或者将TextView元素设置为包含字符串“NULL”。

我在使用Google Play Services 9.0.83运行Marshmallow的Nexus 5和使用Google Play服务的Marshmallow AVD上测试了应用程序8.4.89

我使用Google Play Services 8.4.0在两台设备上构建应用程序，在compile 'com.google.android.gms:play-services:8.4.0'部分的dependencies部分添加了build.gradle部分用于应用程序模块（我只能下载8.4.0因为8.4.89在android studio上不可用）。在启动应用程序的两个设备上都会导致以下错误：

GoogleService failed to initialize, status: 10, Missing an expected resource: 'R.string.google_app_id' for initializing Google services.  Possible causes are missing google-services.json or com.google.gms.google-services gradle plugin.

然后我继续使用Google Play Services 9.0.0构建项目，并在compile 'com.google.android.gms:play-services:9.0.0'中添加了行build.gradle（再次找不到9.0.83，所以我不得不使用9.0。 0）。试图在Nexus 5上运行这个没有错误，但是当我调用OnClickUpdate时没有发生TextView的变化，logcat输出中也存在一些问题：

05-27 22:15:15.646 21349-21349/com.example.chris.locationfinder W/System: ClassLoader referenced unknown path: /data/app/com.example.chris.locationfinder-2/lib/arm
05-27 22:15:30.095 21349-21349/com.example.chris.locationfinder W/System: ClassLoader referenced unknown path: /data/app/com.example.chris.locationfinder-2/lib/arm
05-27 22:15:30.136 21349-21349/com.example.chris.locationfinder I/FirebaseInitProvider: FirebaseApp initialization unsuccessful
05-27 22:15:30.597 21349-21349/com.example.chris.locationfinder W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
05-27 22:15:30.923 21349-22261/com.example.chris.locationfinder V/GoogleSignatureVerifier: com.google.android.gms signature not valid.  Found: 
                                                                                           MIIEQzCCAyugAwIBAgIJAMLgh0ZkSjCNMA0GCSqGSIb3DQEBBAUAMHQxCzAJBgNVBAYTAlVTMRMw
                                                                                           EQYDVQQIEwpDYWxpZm9ybmlhMRYwFAYDVQQHEw1Nb3VudGFpbiBWaWV3MRQwEgYDVQQKEwtHb29n
                                                                                           bGUgSW5jLjEQMA4GA1UECxMHQW5kcm9pZDEQMA4GA1UEAxMHQW5kcm9pZDAeFw0wODA4MjEyMzEz
                                                                                           MzRaFw0zNjAxMDcyMzEzMzRaMHQxCzAJBgNVBAYTAlVTMRMwEQYDVQQIEwpDYWxpZm9ybmlhMRYw
                                                                                           FAYDVQQHEw1Nb3VudGFpbiBWaWV3MRQwEgYDVQQKEwtHb29nbGUgSW5jLjEQMA4GA1UECxMHQW5k
                                                                                           cm9pZDEQMA4GA1UEAxMHQW5kcm9pZDCCASAwDQYJKoZIhvcNAQEBBQADggENADCCAQgCggEBAKtW
                                                                                           LgDYO6IIrgqWbxJOKdoR8qtW0I9Y4sypEwPpt1TTcvZApxsdyxMJZ2JORland2qSGT2y5b+3JKke
                                                                                           dxiLDmpHpDsz2WCbdxgxRczfey5YZnTJ4VZbH0xqWVW/8lGmPav5xVwnIiJS6HXk+BVKZF+JcWjA
                                                                                           sb/GEuq/eFdpuzSqeYTcfi6idkyugwfYwXFU1+5fZKUaRKYCwkkFQVfcAs1fXA5V+++FGfvjJ/Cx
                                                                                           URaSxaBvGdGDhfXE28LWuT9ozCl5xw4Yq5OGazvV24mZVSoOO0yZ31j7kYvtwYK6NeADwbSxDdJE
                                                                                           qO4k//0zOHKrUiGYXtqw/A0LFFtqoZKFjnkCAQOjgdkwgdYwHQYDVR0OBBYEFMd9jMIhF1Ylmn/T
                                                                                           gt9r45jk14alMIGmBgNVHSMEgZ4wgZuAFMd9jMIhF1Ylmn/Tgt9r45jk14aloXikdjB0MQswCQYD
                                                                                           VQQGEwJVUzETMBEGA1UECBMKQ2FsaWZvcm5pYTEWMBQGA1UEBxMNTW91bnRhaW4gVmlldzEUMBIG
                                                                                           A1UEChMLR29vZ2xlIEluYy4xEDAOBgNVBAsTB0FuZHJvaWQxEDAOBgNVBAMTB0FuZHJvaWSCCQDC
                                                                                           4IdGZEowjTAMBgNVHRMEBTADAQH/MA0GCSqGSIb3DQEBBAUAA4IBAQBt0lLO74UwLDYKqs6Tm8/y
                                                                                           zKkEu116FmH4rkaymUIE0P9KaMftGlMexFlaYjzmB2OxZyl6euNXEsQH8gjwyxCUKRJNexBiGcCE
                                                                                           yj6z+a1fuHHvkiaai+KL8W1EyNmgjmyy8AW7P+LLlkR+ho5zEHatRbM/YAnqGcFh5iZBqpknHf1S
                                                                                           KMXFh4dd239FJ1jWYfbMDMy3NS5CTMQ2XFI1MvcyUTdZPErjQfTbQe3aDQsQcafEQPD+nqActifK
                                                                                           Z0Np0IS9L9kR/wbNvyz6ENwPiTrjV2KRkEjH78ZMcUQXg0L3BYHJ3lc69Vs5Ddf9uUGGMYldX3Wf
                                                                                           MBEmh/9iFBDAaTCK
05-27 22:15:30.933 21349-22262/com.example.chris.locationfinder D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true
05-27 22:15:31.038 21349-22262/com.example.chris.locationfinder I/Adreno-EGL: <qeglDrvAPI_eglInitialize:379>: QUALCOMM Build: 10/21/15, 369a2ea, I96aee987eb
05-27 22:15:31.042 21349-22262/com.example.chris.locationfinder I/OpenGLRenderer: Initialized EGL, version 1.4

在AVD上运行相同的版本无法连接到Google Play服务并提供以下消息：

05-27 22:32:43.161 4983-4983/com.example.chris.locationfinder I/Error: Connection failed: ConnectionResult.getErrorCode() = 2

                                                                       [ 05-27 22:32:43.196  4983: 5325 D/         ]
                                                                       HostConnection::get() New Host Connection established 0xaa102e10, tid 5325
05-27 22:32:43.211 4983-5325/com.example.chris.locationfinder I/OpenGLRenderer: Initialized EGL, version 1.4

我不知道我做错了什么。任何帮助都将受到高度赞赏。

Answer 1

您提供的遇到的错误可能是因为您的Android应用尝试连接到该服务时尚未登录。

建议try Sign-In for Android。您需要从给定链接获取配置文件。然后，将配置文件添加到项目中。如文档中所述：

将刚刚下载的google-services.json文件复制到Android Studio项目的app/或mobile/目录中。

如果仍然无法解决问题，您可以尝试此SO帖子中提供的其他可能解决方案 - GoogleService failed to initialize。希望有所帮助。

Google Play服务位置API设置问题

1 个答案: