Google+登录

Question

我需要通过我的应用程序的谷歌加登录，我得到了除Lolly流行的所有版本的登录。通过我的应用程序登录google plus的流程是什么？请给我答复什么是实际的程序…

这是我到目前为止所做的代码。

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.provider.SyncStateContract;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.TextView;

import com.google.android.gms.auth.api.Auth;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.auth.api.signin.GoogleSignInResult;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.SignInButton;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.OptionalPendingResult;
import com.google.android.gms.common.api.ResultCallback;


public class GmailSignin extends AppCompatActivity implements GoogleApiClient.OnConnectionFailedListener{
    TextView signInButton;
    private GoogleApiClient mGoogleApiClient;
    private static final int RC_SIGN_IN = 9001;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestEmail()
                .build();

    mGoogleApiClient = new GoogleApiClient.Builder(this)
            .enableAutoManage(this /* FragmentActivity */, this /* OnConnectionFailedListener */)
            .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
            .build();


    signInButton = (TextView) findViewById(R.id.sign_in_button);
    signInButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            signIn();
        }
    });
}


 void signIn() {
    Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
    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 GoogleSignInApi.getSignInIntent(...);
    if (requestCode == RC_SIGN_IN) {
        GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
        handleSignInResult(result);
    }
}

private void handleSignInResult(GoogleSignInResult result) {
    Log.d("Signin", "handleSignInResult:" + result.isSuccess());
    if (result.isSuccess()) {
        // Signed in successfully, show authenticated UI.
        GoogleSignInAccount acct = result.getSignInAccount();
        Conatants.name=acct.getDisplayName();
        Conatants.email=acct.getEmail();
        Conatants.id=acct.getId();
        Intent intent=new Intent(getApplicationContext(),Details.class);
        startActivity(intent);

    } else {
        // Signed out, show unauthenticated UI.
    }
}


@Override
public void onConnectionFailed(ConnectionResult connectionResult) {

}
public void onStart(){
    OptionalPendingResult<GoogleSignInResult> opr = Auth.GoogleSignInApi.silentSignIn(mGoogleApiClient);

    if (opr.isDone()) {
        // If the user's cached credentials are valid, the OptionalPendingResult will be "done"
        // and the GoogleSignInResult will be available instantly.
        Log.d("gmailsignup", "Got cached sign-in");
        GoogleSignInResult result = opr.get();
        handleSignInResult(result);
    } else {
        // If the user has not previously signed in on this device or the sign-in has expired,
        // this asynchronous branch will attempt to sign in the user silently.  Cross-device
        // single sign-on will occur in this branch.
        opr.setResultCallback(new ResultCallback<GoogleSignInResult>() {
            @Override
            public void onResult(GoogleSignInResult googleSignInResult) {
                handleSignInResult(googleSignInResult);
            }
        });
    }
}
}

Answer 1

我从来没有用Facebook login google plus登录过，但我很习惯它的模块来帮助你。祝你在here上好运。

Answer 2

(我正在尝试格式化代码大约一个小时，但没有运气，有人编辑正确的格式的答案请)。

实际答案：

这对我来说很有效，目前它正在生产中，所以它经过了彻底的测试

公共类LoginActivity扩展了FragmentActivity实现的View.OnClickListener，GoogleApiClient.OnConnectionFailedListener {

private GoogleApiClient mGoogleApiClient;
    
private static final int RC_SIGN_IN = 9001;

private Button signUpGoogle;

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

    signUpGoogle = (Button) findViewById(R.id.sign_up_google);
        signUpGoogle.setOnClickListener(this);

    GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                                .requestEmail()
                                .build();

      mGoogleApiClient = new GoogleApiClient.Builder(this)
                           .enableAutoManage(this /* FragmentActivity */, this /* OnConnectionFailedListener */)
                          .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
                          .build();
}

@Override
    public void onClick(View v) {
        signInGoogle();
    }

private void signInGoogle() {
        Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
        startActivityForResult(signInIntent, RC_SIGN_IN);
    }

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

//     Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
        if (requestCode == RC_SIGN_IN) {
            GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
            handleSignInResultGoogle(result);
        }
    }

    private void handleSignInResultGoogle(GoogleSignInResult result) {
        AlertsAndLogs.log(TAG, "handleSignInResult:" + result.isSuccess());
        if (result.isSuccess()) {
            GoogleSignInAccount acct = result.getSignInAccount();
            if (acct != null) {
                //Get details from account: acc and do something when them
            }
        } else {
            AlertsAndLogs.toast("SignUp with Google failed " + result.toString());
        }
    }

@Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        AlertsAndLogs.logError(TAG, "onConnectionFailed:" + connectionResult);
    }

}

Answer 3

这是我在我的应用程序中用来登录Google plus的一个修改版本。适用于我支持的所有api版本(14及以上)。

简而言之，这个类执行以下操作。

当结果为登录按钮的结果时，

• 将GoogleApiClient设置为所需的作用域。当按钮为created.
• Registers clicked.
• Handles onActivityResult.

中的登录结果时，Activity

• 将使用结果启动登录Activtiy

SignInActivity.java

    public class SignInActivity extends AppCompatActivity implements
            GoogleApiClient.ConnectionCallbacks,
            GoogleApiClient.OnConnectionFailedListener {
        private static final int SIGN_IN_REQUEST = 101;

        private GoogleApiClient mGoogleApiClient;

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);

            setContentView(R.layout.activity_sign_in);
            initialize();
        }

        @Override
        public void onConnected(@Nullable Bundle bundle) {
            // Maybe only enable the sign in button as soon as the api is connected
        }

        @Override
        public void onConnectionSuspended(int i) {
            // Check best practices
        }

        @Override
        public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
            // Check best practices
        }

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

            if (requestCode == SIGN_IN_REQUEST) {

                final AppPreference preference = PreferenceFactory.getPreferenceHelper(this);
                GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
                if (result != null && result.isSuccess()) {
                    // DO SOMETHING ON SUCCESS
                } else {
                    // HANDLE FAILED LOGIN
                }
            }
        }

        protected void signInClicked() {

            //SHOW A PROGRESS BAR OR SOME INDICATION OF SIGN IN
            Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
            startActivityForResult(signInIntent, SIGN_IN_REQUEST);
        }

        private void initialize() {

            setupGoogleApiClient();
            setupToolbar();
            setupSignInButton();
        }

        private Toolbar setupToolbar() {

            Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
            setSupportActionBar(toolbar);
            ActionBar actionBar = getSupportActionBar();
            if (actionBar != null) {
                actionBar.setDisplayHomeAsUpEnabled(true);
                actionBar.setTitle(getString(R.string.sign_in_activity));
            }

            return toolbar;
        }

        private void setupSignInButton() {

            findViewById(R.id.signInButton).setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    signInClicked();
                }
            });
        }

        private void setupGoogleApiClient() {

            GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                    .requestProfile()
                    .requestEmail()
                    .requestScopes(Drive.SCOPE_FILE, Drive.SCOPE_APPFOLDER)
                    .build();

            mGoogleApiClient = new GoogleApiClient.Builder(this)
                    .enableAutoManage(this, this)
                    .addConnectionCallbacks(this)
                    .addOnConnectionFailedListener(this)
                    .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
                    .addApi(Plus.API)
                    .addApi(Drive.API)
                    .build();

            mGoogleApiClient.connect();
        }
    }

有关这方面的更多信息，请查看登录Android上的this教程。