我已成功创建Google+ Signin。 我试图从其他活动中注销g +。
我尝试了下面的代码，但是按照我的预期不能正常工作。 我想要的是从LoginActivity＆amp;从MainActivity注销。
以下是我的LoginActivity Code。
import java.util.ArrayList;
import java.util.List;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.content.ContentResolver;
import android.content.Intent;
import android.content.IntentSender.SendIntentException;
import android.database.Cursor;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Build.VERSION;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.LoaderManager.LoaderCallbacks;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.text.TextUtils;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.inputmethod.EditorInfo;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.plus.Plus;
//import android.app.LoaderManager.LoaderCallbacks;
//import android.content.CursorLoader;
//import android.content.Loader;
/**
* A login screen that offers login via email/password.
*/
public class LoginActivity extends FragmentActivity implements LoaderCallbacks<Cursor>, OnClickListener, com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks, com.google.android.gms.common.api.GoogleApiClient.OnConnectionFailedListener {
/* Request code used to invoke sign in user interactions. */
private static final int RC_SIGN_IN = 0;
/* Client used to interact with Google APIs. */
public static GoogleApiClient mGoogleApiClient;
/* A flag indicating that a PendingIntent is in progress and prevents
* us from starting further intents.
*/
private boolean mIntentInProgress;
/* Track whether the sign-in button has been clicked so that we know to resolve
* all issues preventing sign-in without waiting.
*/
private boolean mSignInClicked;
/* Store the connection result from onConnectionFailed callbacks so that we can
* resolve them when the user clicks sign-in.
*/
private ConnectionResult mConnectionResult;
/**
* A dummy authentication store containing known user names and passwords.
* TODO: remove after connecting to a real authentication system.
*/
private static final String[] DUMMY_CREDENTIALS = new String[] {
"foo@example.com:hello", "bar@example.com:world" };
/**
* Keep track of the login task to ensure we can cancel it if requested.
*/
private UserLoginTask mAuthTask = null;
// UI references.
private AutoCompleteTextView mEmailView;
private EditText mPasswordView;
private View mProgressView;
private View mLoginFormView;
@Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
mGoogleApiClient.connect();
}
/*
@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
if (mGoogleApiClient.isConnected()) {
mGoogleApiClient.disconnect();
}
}
*/
public void disconnect(){
if (mGoogleApiClient.isConnected()) {
Log.e("LoginActivity()","before signout" + mGoogleApiClient.isConnected());
mGoogleApiClient.disconnect();
Log.e("LoginActivity()","after signout" + mGoogleApiClient.isConnected());
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(Plus.API)
.addScope(Plus.SCOPE_PLUS_LOGIN)
.build();
/* Button signin = (Button)findViewById(R.id.sign_in_button);
signin.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (!mGoogleApiClient.isConnecting()) {
mSignInClicked = true;
resolveSignInErrors();
}
}
}); */
findViewById(R.id.sign_in_button).setOnClickListener(this);
Button signout = (Button)findViewById(R.id.signout_in_button);
signout.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Log.e("LoginActivity()","before signout" + mGoogleApiClient.isConnected());
if (mGoogleApiClient.isConnected()) {
Plus.AccountApi.clearDefaultAccount(mGoogleApiClient);
mGoogleApiClient.disconnect();
mGoogleApiClient.connect();
}
Log.e("LoginActivity()","After signout" + mGoogleApiClient.isConnected());
}
});
// Set up the login form.
mEmailView = (AutoCompleteTextView) findViewById(R.id.email);
populateAutoComplete();
mPasswordView = (EditText) findViewById(R.id.password);
mPasswordView
.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView textView, int id,
KeyEvent keyEvent) {
if (id == R.id.login || id == EditorInfo.IME_NULL) {
attemptLogin();
return true;
}
return false;
}
});
Button mEmailSignInButton = (Button) findViewById(R.id.email_sign_in_button);
mEmailSignInButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
attemptLogin();
}
});
mLoginFormView = findViewById(R.id.login_form);
mProgressView = findViewById(R.id.login_progress);
}
//result.getResolution().getIntentSender()
/* A helper method to resolve the current ConnectionResult error. */
private void resolveSignInError() {
// if (mConnectionResult.hasResolution()) {
try {
mIntentInProgress = true;
startIntentSenderForResult(mConnectionResult.getResolution().getIntentSender(),
RC_SIGN_IN, null, 0, 0, 0);
} catch (SendIntentException e) {
// The intent was canceled before it was sent. Return to the default
// state and attempt to connect to get an updated ConnectionResult.
mIntentInProgress = false;
mGoogleApiClient.connect();
}
// }
}
private void populateAutoComplete() {
if (VERSION.SDK_INT >= 14) {
// Use ContactsContract.Profile (API 14+)
//getLoaderManager().initLoader(0, null, this);
getSupportLoaderManager().initLoader(0, null, this);
} else if (VERSION.SDK_INT >= 8) {
// Use AccountManager (API 8+)
new SetupEmailAutoCompleteTask().execute(null, null);
}
}
/**
* Attempts to sign in or register the account specified by the login form.
* If there are form errors (invalid email, missing fields, etc.), the
* errors are presented and no actual login attempt is made.
*/
public void attemptLogin() {
if (mAuthTask != null) {
return;
}
// Reset errors.
mEmailView.setError(null);
mPasswordView.setError(null);
// Store values at the time of the login attempt.
String email = mEmailView.getText().toString();
String password = mPasswordView.getText().toString();
boolean cancel = false;
View focusView = null;
// Check for a valid password, if the user entered one.
if (!TextUtils.isEmpty(password) && !isPasswordValid(password)) {
mPasswordView.setError(getString(R.string.error_invalid_password));
focusView = mPasswordView;
cancel = true;
}
// Check for a valid email address.
if (TextUtils.isEmpty(email)) {
mEmailView.setError(getString(R.string.error_field_required));
focusView = mEmailView;
cancel = true;
} else if (!isEmailValid(email)) {
mEmailView.setError(getString(R.string.error_invalid_email));
focusView = mEmailView;
cancel = true;
}
if (cancel) {
// There was an error; don't attempt login and focus the first
// form field with an error.
focusView.requestFocus();
} else {
// Show a progress spinner, and kick off a background task to
// perform the user login attempt.
showProgress(true);
mAuthTask = new UserLoginTask(email, password);
mAuthTask.execute((Void) null);
}
}
private boolean isEmailValid(String email) {
// TODO: Replace this with your own logic
return email.contains("@");
}
private boolean isPasswordValid(String password) {
// TODO: Replace this with your own logic
return password.length() > 4;
}
/**
* Shows the progress UI and hides the login form.
*/
@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
public void showProgress(final boolean show) {
// On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
// for very easy animations. If available, use these APIs to fade-in
// the progress spinner.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
int shortAnimTime = getResources().getInteger(
android.R.integer.config_shortAnimTime);
mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
mLoginFormView.animate().setDuration(shortAnimTime)
.alpha(show ? 0 : 1)
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mLoginFormView.setVisibility(show ? View.GONE
: View.VISIBLE);
}
});
mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
mProgressView.animate().setDuration(shortAnimTime)
.alpha(show ? 1 : 0)
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mProgressView.setVisibility(show ? View.VISIBLE
: View.GONE);
}
});
} else {
// The ViewPropertyAnimator APIs are not available, so simply show
// and hide the relevant UI components.
mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
}
}
@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
@Override
public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
return new CursorLoader(this,
// Retrieve data rows for the device user's 'profile' contact.
Uri.withAppendedPath(ContactsContract.Profile.CONTENT_URI,
ContactsContract.Contacts.Data.CONTENT_DIRECTORY),
ProfileQuery.PROJECTION,
// Select only email addresses.
ContactsContract.Contacts.Data.MIMETYPE + " = ?",
new String[] { ContactsContract.CommonDataKinds.Email.CONTENT_ITEM_TYPE },
// Show primary email addresses first. Note that there won't be
// a primary email address if the user hasn't specified one.
ContactsContract.Contacts.Data.IS_PRIMARY + " DESC");
}
@Override
public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
List<String> emails = new ArrayList<String>();
cursor.moveToFirst();
while (!cursor.isAfterLast()) {
emails.add(cursor.getString(ProfileQuery.ADDRESS));
cursor.moveToNext();
}
addEmailsToAutoComplete(emails);
}
@Override
public void onLoaderReset(Loader<Cursor> cursorLoader) {
}
private interface ProfileQuery {
String[] PROJECTION = { ContactsContract.CommonDataKinds.Email.ADDRESS,
ContactsContract.CommonDataKinds.Email.IS_PRIMARY, };
int ADDRESS = 0;
int IS_PRIMARY = 1;
}
/**
* Use an AsyncTask to fetch the user's email addresses on a background
* thread, and update the email text field with results on the main UI
* thread.
*/
class SetupEmailAutoCompleteTask extends
AsyncTask<Void, Void, List<String>> {
@Override
protected List<String> doInBackground(Void... voids) {
ArrayList<String> emailAddressCollection = new ArrayList<String>();
// Get all emails from the user's contacts and copy them to a list.
ContentResolver cr = getContentResolver();
Cursor emailCur = cr.query(
ContactsContract.CommonDataKinds.Email.CONTENT_URI, null,
null, null, null);
while (emailCur.moveToNext()) {
String email = emailCur
.getString(emailCur
.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
emailAddressCollection.add(email);
}
emailCur.close();
return emailAddressCollection;
}
@Override
protected void onPostExecute(List<String> emailAddressCollection) {
addEmailsToAutoComplete(emailAddressCollection);
}
}
private void addEmailsToAutoComplete(List<String> emailAddressCollection) {
// Create adapter to tell the AutoCompleteTextView what to show in its
// dropdown list.
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
LoginActivity.this,
android.R.layout.simple_dropdown_item_1line,
emailAddressCollection);
mEmailView.setAdapter(adapter);
}
/**
* Represents an asynchronous login/registration task used to authenticate
* the user.
*/
public class UserLoginTask extends AsyncTask<Void, Void, Boolean> {
private final String mEmail;
private final String mPassword;
UserLoginTask(String email, String password) {
mEmail = email;
mPassword = password;
}
@Override
protected Boolean doInBackground(Void... params) {
// TODO: attempt authentication against a network service.
try {
// Simulate network access.
Thread.sleep(2000);
} catch (InterruptedException e) {
return false;
}
for (String credential : DUMMY_CREDENTIALS) {
String[] pieces = credential.split(":");
if (pieces[0].equals(mEmail)) {
// Account exists, return true if the password matches.
return pieces[1].equals(mPassword);
}
}
// TODO: register the new account here.
return true;
}
@Override
protected void onPostExecute(final Boolean success) {
mAuthTask = null;
showProgress(false);
if (success) {
finish();
} else {
mPasswordView
.setError(getString(R.string.error_incorrect_password));
mPasswordView.requestFocus();
}
}
@Override
protected void onCancelled() {
mAuthTask = null;
showProgress(false);
}
}
@Override
public void onConnectionFailed(ConnectionResult result) {
// TODO Auto-generated method stub
if (!mIntentInProgress) {
// Store the ConnectionResult so that we can use it later when the user clicks
// 'sign-in'.
mConnectionResult = result;
if (mSignInClicked) {
// The user has already clicked 'sign-in' so we attempt to resolve all
// errors until the user is signed in, or they cancel.
resolveSignInError();
}
}
}
@Override
protected void onActivityResult(int requestCode, int responseCode, Intent intent) {
//TODO Auto-generated method stub
if (requestCode == RC_SIGN_IN) {
if (responseCode != RESULT_OK) {
mSignInClicked = false;
}
mIntentInProgress = false;
if (!mGoogleApiClient.isConnecting()) {
mGoogleApiClient.connect();
}
}
}
@Override
public void onConnected(Bundle arg0) {
// TODO Auto-generated method stub
mSignInClicked = false;
Toast.makeText(this, "User is connected!", Toast.LENGTH_LONG).show();
Log.e("LoginActivity()","onconnected status :" + mGoogleApiClient.isConnected());
Intent i = new Intent(this,MainActivity.class);
LoginActivity.this.startActivity(i);
}
@Override
public void onConnectionSuspended(int arg0) {
// TODO Auto-generated method stub
mGoogleApiClient.connect();
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (v.getId() == R.id.sign_in_button
&& !mGoogleApiClient.isConnecting()) {
mSignInClicked = true;
resolveSignInError();
}
}
}
此activity_login.xml的布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.dotncube.gmailtest.LoginActivity" >
<!-- Login progress -->
<ProgressBar
android:id="@+id/login_progress"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:visibility="gone" />
<ScrollView
android:id="@+id/login_form"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:id="@+id/email_login_form"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<AutoCompleteTextView
android:id="@+id/email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/prompt_email"
android:inputType="textEmailAddress"
android:maxLines="1"
android:singleLine="true" />
<EditText
android:id="@+id/password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/prompt_password"
android:imeActionId="@+id/login"
android:imeActionLabel="@string/action_sign_in_short"
android:imeOptions="actionUnspecified"
android:inputType="textPassword"
android:maxLines="1"
android:singleLine="true" />
<Button
android:id="@+id/email_sign_in_button"
style="?android:textAppearanceSmall"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="@string/action_sign_in"
android:textStyle="bold" />
<com.google.android.gms.common.SignInButton
android:id="@+id/sign_in_button"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/signout_in_button"
style="?android:textAppearanceSmall"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Signout from google"
android:textStyle="bold" />
</LinearLayout>
</ScrollView>
</LinearLayout>
在MainActivity中，我正在调用LoginActivity的注销功能。
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void signout(View v){
LoginActivity obj = new LoginActivity();
obj.disconnect();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
答案 0 :(得分：2)
“签出”对你意味着什么？用户是否应该重新选择他们的帐户？或者您是否要完全取消对您的应用程序的授权，以便下次使用它们时，它们会看到帐户选择器和登录对话框？
如果您只是希望他们下次看到帐户选择器，请致电Plus.AccountApi.clearDefaultAccount(...)。如果您希望取消授权您的应用，请致电Plus.AccountApi.revokeAccessAndDisconnect(...)并等待回复。
https://developer.android.com/reference/com/google/android/gms/plus/Account.html