From 1st look of your question, It seems that you're keeping meta data outside the application tag but should be inside application tag in AndroidManifest.xml file
像这样 ：
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/GdxTheme" >
<activity
android:name="com.google.android.gms.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
android:theme="@android:style/Theme.Translucent" />
<activity
android:name="com.harrybanda.blaster.AndroidLauncher"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:configChanges="keyboard|keyboardHidden|orientation|screenSize">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data android:name="com.google.android.gms.games.APP_ID"
android:value="@string/app_id" />
<meta-data android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version"/>
</application>
StatusCode 4 (SIGN_IN_REQUIRED) 错误意味着客户端尝试
连接到服务，但用户未登录。
这是我的AndroidLauncher class
public class AndroidLauncher extends AndroidApplication implements MyServices {
private GoogleSignInClient mGoogleSignInClient;
private LeaderboardsClient mLeaderboardsClient;
private PlayersClient mPlayersClient;
private static final String TAG=AndroidLauncher.class.getSimpleName();
private static final int RC_SIGN_IN = 9001;
private static final int RC_UNUSED = 5001;
private static final int RC_LEADERBOARD_UI = 9004;
private String greetingMsg="Welcome, ";
private boolean greetingDisplayed;
@Override
protected void onCreate (Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
greetingDisplayed=false;
AndroidApplicationConfiguration config = new AndroidApplicationConfiguration();
initialize(new GdxGame(this), config);
mGoogleSignInClient = GoogleSignIn.getClient(this,
new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_GAMES_SIGN_IN).build());
}
@Override
public boolean isSignedIn() {
return GoogleSignIn.getLastSignedInAccount(this) != null;
}
private void signInSilently() {
mGoogleSignInClient.silentSignIn().addOnCompleteListener(this,
new OnCompleteListener<GoogleSignInAccount>() {
@Override
public void onComplete(@NonNull Task<GoogleSignInAccount> task) {
if (task.isSuccessful()) {
greetingMsg="Welcome back, ";
onConnected(task.getResult());
} else {
onDisconnected();
}
}
});
}
private void onConnected(GoogleSignInAccount googleSignInAccount) {
mLeaderboardsClient = Games.getLeaderboardsClient(this, googleSignInAccount);
mPlayersClient = Games.getPlayersClient(this, googleSignInAccount);
mPlayersClient.getCurrentPlayer()
.addOnCompleteListener(new OnCompleteListener<Player>() {
@Override
public void onComplete(@NonNull Task<Player> task) {
String displayName;
if (task.isSuccessful()) {
displayName = task.getResult().getDisplayName();
} else {
Exception e = task.getException();
handleException(e, getString(R.string.players_exception));
displayName = "???";
}
if(!greetingDisplayed)
welcomeMessage(displayName);
}
});
}
private void welcomeMessage(String name){
Toast toast = Toast.makeText(this, greetingMsg + name, Toast.LENGTH_LONG);
toast.setGravity(Gravity.TOP, 0, 0);
View view = toast.getView();
TextView text = (TextView) view.findViewById(android.R.id.message);
toast.show();
greetingDisplayed=true;
}
@Override
public void startSignInIntent() {
startActivityForResult(mGoogleSignInClient.getSignInIntent(), RC_SIGN_IN);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
super.onActivityResult(requestCode, resultCode, intent);
if (requestCode == RC_SIGN_IN) {
Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(intent);
try {
GoogleSignInAccount account = task.getResult(ApiException.class);
greetingMsg="Welcome, ";
onConnected(account);
} catch (ApiException apiException) {
String message = apiException.getMessage();
if (message == null || message.isEmpty()) {
message = getString(R.string.signin_other_error);
}
onDisconnected();
}
}
}
@Override
protected void onResume() {
super.onResume();
signInSilently();
}
private void signOut() {
if (!isSignedIn()) {
Log.w(TAG, "signOut() called, but was not signed in!");
return;
}
mGoogleSignInClient.signOut().addOnCompleteListener(this,
new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
boolean successful = task.isSuccessful();
Log.d(TAG, "signOut(): " + (successful ? "success" : "failed"));
onDisconnected();
}
});
}
private void onDisconnected() {
mLeaderboardsClient = null;
mPlayersClient = null;
}
@Override
public void submitScore(int score){
if(isSignedIn())
mLeaderboardsClient.submitScore(getString(R.string.leaderboard_id), score);
}
@Override
public void showLeaderBoard() {
if(isSignedIn())
mLeaderboardsClient.getLeaderboardIntent(getString(R.string.leaderboard_id))
.addOnSuccessListener(new OnSuccessListener<Intent>() {
@Override
public void onSuccess(Intent intent) {
startActivityForResult(intent, RC_LEADERBOARD_UI);
}
});
}
private void handleException(Exception e, String details) {
int status = 0;
if (e instanceof ApiException) {
ApiException apiException = (ApiException) e;
status = apiException.getStatusCode();
}
String message = getString(R.string.status_exception_error, details, status, e);
new AlertDialog.Builder(this)
.setMessage(message)
.setNeutralButton(android.R.string.ok, null)
.show();
}
}
And MyServices界面
interface MyServices{
void startSignInIntent();
boolean isSignedIn();
void showLeaderBoard();
void submitScore(int score);
}
我第一次打电话startSignInIntent()用户安装应用程序后我自己设计的界面。
