在Android中从Google Plus获取用户名

Question

我已将Google plus与我的Android应用集成.一切正常,我也连接到谷歌加,但我无法得到当前用户的名称记录.

public void onConnected(Bundle connectionHint) {
    String personName="Unknown";
    if (Plus.PeopleApi.getCurrentPerson(mGoogleApiClient) != null) {
        Person currentPerson = Plus.PeopleApi.getCurrentPerson(mGoogleApiClient);
        personName = currentPerson.getDisplayName();
    }
}

Plus.PeopleApi.getCurrentPerson(mGoogleApiClient)此方法始终返回null.

任何帮助将不胜感激.谢谢.

Answer 1

对我而言,此次调用返回null的原因是我的应用程序未启用Google+ API.导航到https://console.developers.google.com,选择您的项目并启用Google+ API以使其正常运行!

Answer 2

你必须添加这一行:

Plus.PeopleApi.loadVisible(mGoogleApiClient, null).setResultCallback(this);

像这样:

public void onConnected(Bundle connectionHint) {

    /* This Line is the key */
    Plus.PeopleApi.loadVisible(mGoogleApiClient, null).setResultCallback(this);

    String personName="Unknown";
    if (Plus.PeopleApi.getCurrentPerson(mGoogleApiClient) != null) {
       Person currentPerson = Plus.PeopleApi.getCurrentPerson(mGoogleApiClient);
       personName = currentPerson.getDisplayName();
       .........
    }
}

Answer 3

在我的情况下,null返回,因为我已添加该行:

addScope(新范围(Scopes.EMAIL))

    mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .addApi(Plus.API)
            .addScope(new Scope(Scopes.PROFILE))
            //.addScope(new Scope(Scopes.EMAIL))
            .build();

================= UPDATE ========================范围应设置如下:

mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .addApi(Plus.API)
            .addScope(Plus.SCOPE_PLUS_PROFILE)
            .addScope(Plus.SCOPE_PLUS_LOGIN)
            .build();