Question

我制作了一个示例应用，尝试如何连接到Google Play服务，在手机或平板电脑上试用时，它会在打开应用时崩溃。

我确定错误是在尝试使用client.connect（）进行连接时，因为在评论时，应用程序不会崩溃。

主要（也是唯一）活动如下，我省略了导入，因为编译正确。

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


private GoogleApiClient client;
//GoogleApiClient

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


   client = new GoogleApiClient.Builder(this)
           .addConnectionCallbacks(this)
           .addOnConnectionFailedListener(this)
            .addApi(Games.API).addScope(Games.SCOPE_GAMES)
            .build();

}

@Override
public void onStart() {
    super.onStart();
    client.connect();  //   <- Error line


}

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

}

public void onConnectionSuspended(int cause) {
    // We are not connected anymore!
    Log.i("app", "connectionsuspended");
}

public void onConnected(Bundle connectionHint) {

}

public void onConnectionFailed(ConnectionResult result) {
    // We tried to connect but failed!


    try {
        result.startResolutionForResult(this, 49404);
    } catch (Exception e) {
        Log.i("app", e.toString());
    }

}

}

还有我的gradle.build：

[...]
 dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:24.0.0'
compile 'com.google.android.gms:play-services-games:9.2.0'
 }
[...]

非常欢迎任何帮助。

更新，我将发布日志错误的相关行，因为没有错误，只有警告，我发现以下相关内容。

07-04 12:20:15.840 5124-5192/com.example.internet.connectiontry W/GooglePlayServicesUtil: Google Play services out of date.  Requires 9256000 but found 9080270

更新2：

似乎在使用

compile 'com.google.android.gms:play-services:4.2.+'

相反，它可以解决这个问题，但由于以下原因导致崩溃：

--------- beginning of crash
07-04 19:35:14.788 2245-2245/com.example.internet.connectiontry     E/AndroidRuntime: FATAL EXCEPTION: main
[...]
   Caused by: java.lang.IllegalStateException: A required meta-data tag in your app's AndroidManifest.xml does not exist.  You must have the following declaration within the <application> element:     <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />

这是我的清单文件：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.internet.connectiontry">

    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>


    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <activity android:name=".MainActivity">
            <meta-data android:name="com.google.android.gms.version"     android:value="@integer/google_play_services_version" />

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>
        </activity>

    </application>


</manifest>

根据互联网信息，元数据标签必须是应用标签下的第一个子标签，但我尝试了几次，位置......并且不起作用。

Answer 1

试试这个：

@Override
public void onStart() {
   super.onStart();
      if(client != null){
         client.connect();
      }
}

检查设备上是否安装了Google Play服务：

GoogleApiAvailability googleApiAvailability = GoogleApiAvailability.getInstance();
        int resultCode = googleApiAvailability.isGooglePlayServicesAvailable(this);
        if (resultCode == ConnectionResult.SUCCESS) {
            // do your task
        } else{
            Toast.makeText(this, "Google Play Services required!!", Toast.LENGTH_LONG).show();
        }

Answer 2

将此添加到您的onCreate方法

if (client == null) {
 client = new GoogleApiClient.Builder(this)
           .addConnectionCallbacks(this)
           .addOnConnectionFailedListener(this)
           .addApi(Games.API).addScope(Games.SCOPE_GAMES)
           .build();
}

并将@Override添加到您的onConnectionFailed方法

连接到Google Play服务的设备崩溃

2 个答案: