Android Studio：Google 登录 Intent 的正确 mainfest 数据是什么？

如何解决Android Studio：Google 登录 Intent 的正确 mainfest 数据是什么？

我现在正在练习的是让用户登录他们的 Google 帐户，以便我可以访问成就和排行榜。

使用 Google 的说明，我想出了这个代码......

public class GmeAchvs extends Activity {


// Request code used to invoke sign in user interactions.
private static final int RC_SIGN_IN = 9001;

// Client used to sign in with Google Apis
private GoogleSignInClient mGoogleSignInClient;




public void preSets(){
    // Configure sign-in to request the user's ID,email address,and basic
    // profile. ID and basic profile are included in DEFAULT_SIGN_IN.
    GoogleSignInoptions gso = new GoogleSignInoptions.Builder(GoogleSignInoptions.DEFAULT_SIGN_IN)
            .requestemail()
            .build();

    mGoogleSignInClient = GoogleSignIn.getClient(this,gso);


}


public void signinCheck(){
    GoogleSignInAccount account = GoogleSignIn.getLastSignedInAccount(this);
    //updateUI(account);
}


private void signIn() {
    Intent signInIntent = mGoogleSignInClient.getSignInIntent();
    startActivityForResult(signInIntent,RC_SIGN_IN);
}

@Override
public void onActivityResult(int requestCode,int resultCode,Intent data) {
    super.onActivityResult(requestCode,resultCode,data);

    // Result returned from launching the Intent from GoogleSignInClient.getSignInIntent(...);
    if (requestCode == RC_SIGN_IN) {
        // The Task returned from this call is always completed,no need to attach
        // a listener.
        Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
        handleSignInResult(task);
    }
}

private void handleSignInResult(Task<GoogleSignInAccount> completedTask) {
    try {
        GoogleSignInAccount account = completedTask.getResult(ApiException.class);

        // Signed in successfully,show authenticated UI.
        //updateUI(account);
    } catch (ApiException e) {
        // The ApiException status code indicates the detailed failure reason.
        // Please refer to the GoogleSignInStatusCodes class reference for more information.
        Log.w("signInException","signInResult:Failed code=" + e.getStatusCode());
        //updateUI(null);
    }
}









public void signInSilently() {
    Log.d("silentsignin","signInSilently()");

    mGoogleSignInClient.silentSignIn().addOnCompleteListener(this,new OnCompleteListener<GoogleSignInAccount>() {
                @Override
                public void onComplete(@NonNull Task<GoogleSignInAccount> task) {
                    if (task.isSuccessful()) {
                        Log.d("signinsuccess","signInSilently(): success");
                        //onConnected(task.getResult());
                    } else {
                        Log.d("signinFailed","signInSilently(): failure",task.getException());
                        //ondisconnected();
                    }
                }
            });
}



public void signOut() {
    Log.d("signingout","signOut()");

    mGoogleSignInClient.signOut().addOnCompleteListener(this,new OnCompleteListener<Void>() {
                @Override
                public void onComplete(@NonNull Task<Void> task) {

                    if (task.isSuccessful()) {
                        Log.d("signoutsuccess","signOut(): success");
                    } else {
                        //handleException(task.getException(),"signOut() Failed!");
                    }

                    //ondisconnected();
                }
            });
}




 }// end of class

如果我的研究正确，您必须在清单中声明所有活动...这让我想到了这篇文章的问题...

这种活动的操作和类别是什么？

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

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

我知道这不是 Main，我也不认为它应该是 LAUNCHER。 我什至需要那个小“。”在活动名称之前？