Android谷歌+登录片段

Question

目前我正在尝试使用片段实现google + login,以便我可以在不同的活动中使用它.我已经创建了这样的片段

public class GoogleSignUpFragment extends Fragment implements
    ConnectionCallbacks, OnConnectionFailedListener, OnClickListener {

// PlusClient Variables
private static final int REQUEST_CODE_RESOLVE_ERR = 9000;
private ProgressDialog mConnectionProgressDialog;
private PlusClient mPlusClient;
private ConnectionResult mConnectionResult;

@Override
public void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);

    mPlusClient = new PlusClient.Builder(getActivity()
            .getApplicationContext(), this, this)
            .setActions("http://schemas.google.com/AddActivity",
                    "http://schemas.google.com/BuyActivity")
            .setScopes(Scopes.PLUS_LOGIN, Scopes.PLUS_PROFILE).build();

    getActivity().findViewById(R.id.sign_in_button)
            .setOnClickListener(this);

    // Progress bar to be displayed if the connection failure is not
    // resolved.
    mConnectionProgressDialog = new ProgressDialog(getActivity());
    mConnectionProgressDialog.setMessage("Signing in...");

}

@Override
public void onStart() {
    // TODO Auto-generated method stub
    super.onStart();
    mPlusClient.connect();
}

@Override
public void onStop() {
    // TODO Auto-generated method stub
    super.onStop();
    mPlusClient.disconnect();
}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
    if (requestCode == REQUEST_CODE_RESOLVE_ERR
            && resultCode == Activity.RESULT_OK) {
        mConnectionResult = null;
        mPlusClient.connect();
    }
}

@Override
public void onClick(View view) {
    if (view.getId() == R.id.sign_in_button && !mPlusClient.isConnected()) {
        if (mConnectionResult == null) {
            mConnectionProgressDialog.show();

        } else {
            try {
                mConnectionResult.startResolutionForResult(getActivity(),
                        REQUEST_CODE_RESOLVE_ERR);
            } catch (SendIntentException e) {
                // Try connecting again.
                mConnectionResult = null;
                mPlusClient.connect();
            }
        }
    }
}

@Override
public void onConnectionFailed(ConnectionResult result) {
    if (mConnectionProgressDialog.isShowing()) {
        // The user clicked the sign-in button already. Start to resolve
        // connection errors. Wait until onConnected() to dismiss the
        // connection dialog.
        if (result.hasResolution()) {
            try {
                result.startResolutionForResult(getActivity(),
                        REQUEST_CODE_RESOLVE_ERR);
            } catch (SendIntentException e) {
                mPlusClient.connect();
            }
        }
    }

}

@Override
public void onConnected(Bundle connectionHint) {
    mConnectionProgressDialog.dismiss();
    Toast.makeText(getActivity().getApplicationContext(),
            "User is connected!", Toast.LENGTH_LONG).show();
    Intent intent = new Intent(getActivity().getApplicationContext(),
            LogoutActivity.class);
    startActivity(intent);

}

@Override
public void onDisconnected() {
    // TODO Auto-generated method stub

}

}

我正在使用官方教程,然后在片段中重新使用它.

在主要活动中,我有:

FragmentManager fragmentManager = getSupportFragmentManager();
    android.support.v4.app.FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

    googleSignUpFragment = new GoogleSignUpFragment();
    fragmentTransaction.add(R.id.detailFragment, googleSignUpFragment);
    fragmentTransaction.commit();

但是,每当我单击登录按钮时,只有一个对话框显示"正在登录...",没有其他任何事情发生.任何想法如何解决这个问题？它在正常活动中工作得很好.

谢谢你的帮助.

@编辑.我已经发现onConnectionFailed方法没有启动,所以看起来没有onActivityResult,但是当我直接将mPlusClient.connect()置于我的点击中时它起作用,但我觉得这不是一个正确的方法.也许问题是onConnectionFailed没有beign启动

@Edit 2.现在我已经发现问题似乎与dialog.isShowing()一样,当我删除该行时,帐户选择器显示,在启动后,尝试使用bool值,我点击后更改但是这个不起作用......

Answer 1

为了在官方教程中使用Fragments,您必须知道onActivityResult方法将在拥有Fragment的Activity中调用.

然后在片段中实现public connect()方法,您可以在activity的onActivityResult中调用它而不是plus.connect();直接调用.这样,turotial将使用片段,完全按照预期在使用Activity时工作.如果您需要详细示例,我可以将编辑添加到此答案中.

我建议使用Activity而不是Fragment,因为代码模块化,更容易实现和处理on键后退按钮,以防止进入应用程序等.