自从Android 4.2.2版本以后,可以在Android模拟器上运行Google服务。我正在制作一款Android应用程序,并创建了一个测试项目,以查看是否可以使Google+的登录和退出功能正常工作。
我已经按照以下教程进行操作: http://www.androidhive.info/2014/02/android-login-with-google-plus-account-1/
并参考了以下资料:
- https://developers.google.com/+/mobile/android/getting-started
- https://developers.google.com/+/mobile/android/sign-in
- http://developer.android.com/google/play-services/setup.html#Setup
这生成了以下代码:
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.testproject_gmaillogin"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="9"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.USE_CREDENTIALS" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />
<activity
android:name="com.example.testproject_gmaillogin.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
strings.xml:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">TestProject_GmailLogin</string>
<string name="action_settings">Settings</string>
<string name="profile_pic_description">Google Profile Picture</string>
<string name="btn_logout_from_google">Logout from Google</string>
<string name="btn_revoke_access">Revoke Access</string>
</resources>
activity_main.xml:
<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:orientation="vertical"
android:padding="16dp"
tools:context=".MainActivity" >
<LinearLayout
android:id="@+id/profile_layout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="20dp"
android:orientation="horizontal"
android:weightSum="3"
android:visibility="gone">
<ImageView
android:id="@+id/img_profile_pic"
android:contentDescription="@string/profile_pic_description"
android:layout_width="80dp"
android:layout_height="wrap_content"
android:layout_weight="1"/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:orientation="vertical"
android:layout_weight="2" >
<TextView
android:id="@+id/txt_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:textSize="20sp" />
<TextView
android:id="@+id/txt_email"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:textSize="18sp" />
</LinearLayout>
</LinearLayout>
<com.google.android.gms.common.SignInButton
android:id="@+id/btn_sign_in"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="20dp"/>
<Button
android:id="@+id/btn_sign_out"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/btn_logout_from_google"
android:visibility="gone"
android:layout_marginBottom="10dp"/>
<Button
android:id="@+id/btn_revoke_access"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/btn_revoke_access"
android:visibility="gone" />
</LinearLayout>
主活动.java:
package com.example.testproject_gmaillogin;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.common.SignInButton;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks;
import com.google.android.gms.common.api.GoogleApiClient.OnConnectionFailedListener;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
import com.google.android.gms.plus.Plus;
import com.google.android.gms.plus.model.people.Person;
import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.content.IntentSender.SendIntentException;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends ActionBarActivity implements ConnectionCallbacks, OnConnectionFailedListener, OnClickListener
{
// Logcat tag
private static final String TAG = "MainActivity";
// Profile pix image size in pixels
private static final int PROFILE_PIC_SIZE = 400;
// Request code used to invoke sign in user interactions
private static final int RC_SIGN_IN = 0;
// Client used to interact with Google APIs
private 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;
// The used UI-elements
private SignInButton btnSignIn;
private Button btnSignOut, btnRevokeAccess;
private ImageView imgProfilePic;
private TextView txtName, txtEmail;
private LinearLayout profileLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Get the UI-elements
btnSignIn = (SignInButton) findViewById(R.id.btn_sign_in);
btnSignOut = (Button) findViewById(R.id.btn_sign_out);
btnRevokeAccess = (Button) findViewById(R.id.btn_revoke_access);
imgProfilePic = (ImageView) findViewById(R.id.img_profile_pic);
txtName = (TextView) findViewById(R.id.txt_name);
txtEmail = (TextView) findViewById(R.id.txt_email);
profileLayout = (LinearLayout) findViewById(R.id.profile_layout);
// Set the Button onClick-listeners
btnSignIn.setOnClickListener(this);
btnSignOut.setOnClickListener(this);
btnRevokeAccess.setOnClickListener(this);
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(Plus.API, null)
.addScope(Plus.SCOPE_PLUS_LOGIN)
.build();
}
@Override
protected void onStart(){
super.onStart();
mGoogleApiClient.connect();
}
@Override
protected void onStop(){
super.onStop();
if(mGoogleApiClient.isConnected())
mGoogleApiClient.disconnect();
}
@Override
public void onClick(View view){
switch(view.getId()){
case R.id.btn_sign_in:
signInWithGPlus();
break;
case R.id.btn_sign_out:
signOutFromGPlus();
break;
case R.id.btn_revoke_access:
revokeGPlusAccess();
break;
}
}
@Override
public void onConnectionFailed(ConnectionResult result) {
if(!result.hasResolution()){
GooglePlayServicesUtil.getErrorDialog(result.getErrorCode(), this, 0).show();
return;
}
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
resolveSignInErrors();
}
}
@Override
protected void onActivityResult(int requestCode, int responseCode, Intent intent){
if(requestCode == RC_SIGN_IN && responseCode == RESULT_OK)
SignInClicked = true;
mIntentInProgress = false;
if(!mGoogleApiClient.isConnecting())
mGoogleApiClient.connect();
}
}
@Override
public void onConnected(Bundle connectionHint) {
mSignInClicked = false;
Toast.makeText(this, "User is connected!", Toast.LENGTH_LONG).show();
// Get all the user's information
getProfileInformation();
// Update the UI after sign-in
updateUI(true);
}
@Override
public void onConnectionSuspended(int cause){
mGoogleApiClient.connect();
updateUI(false);
}
// Updating the UI, showing/hiding buttons and profile layout
private void updateUI(boolean isSignedIn){
if(isSignedIn){
btnSignIn.setVisibility(View.GONE);
btnSignOut.setVisibility(View.VISIBLE);
btnRevokeAccess.setVisibility(View.VISIBLE);
profileLayout.setVisibility(View.VISIBLE);
}
else{
btnSignIn.setVisibility(View.VISIBLE);
btnSignOut.setVisibility(View.GONE);
btnRevokeAccess.setVisibility(View.GONE);
profileLayout.setVisibility(View.GONE);
}
}
// Sign-in into Google
private void signInWithGPlus(){
if(!mGoogleApiClient.isConnecting()){
mSignInClicked = true;
resolveSignInErrors();
}
}
// Method to resolve any sign-in errors
private void resolveSignInErrors(){
if(mConnectionResult.hasResolution()){
try{
mIntentInProgress = true;
//Toast.makeText(this, "Resolving Sign-in Errors", Toast.LENGTH_SHORT).show();
mConnectionResult.startResolutionForResult(this, RC_SIGN_IN);
}
catch(SendIntentException e){
// The intent was cancelled before it was sent. Return to the default
// state and attempt to connect to get an updated ConnectionResult
mIntentInProgress = false;
mGoogleApiClient.connect();
}
}
}
// Fetching the user's infromation name, email, profile pic
private void getProfileInformation(){
try{
if(Plus.PeopleApi.getCurrentPerson(mGoogleApiClient) != null){
Person currentPerson = Plus.PeopleApi.getCurrentPerson(mGoogleApiClient);
String personName = currentPerson.getDisplayName();
String personPhotoUrl = currentPerson.getImage().getUrl();
String personGooglePlusProfile = currentPerson.getUrl();
String personEmail = Plus.AccountApi.getAccountName(mGoogleApiClient);
Log.e(TAG, "Name: " + personName + ", "
+ "plusProfile: " + personGooglePlusProfile + ", "
+ "email: " + personEmail + ", "
+ "image: " + personPhotoUrl);
txtName.setText(personName);
txtEmail.setText(personEmail);
// by default the profile url gives 50x50 px image,
// but we can replace the value with whatever dimension we
// want by replacing sz=X
personPhotoUrl = personPhotoUrl.substring(0, personPhotoUrl.length() - 2)
+ PROFILE_PIC_SIZE;
new LoadProfileImage(imgProfilePic).execute(personPhotoUrl);
}
else{
Toast.makeText(getApplicationContext(), "Person information is null", Toast.LENGTH_LONG).show();
}
}
catch(Exception ex){
ex.printStackTrace();
}
}
// Sign-out from Google
private void signOutFromGPlus(){
if(mGoogleApiClient.isConnected()){
Plus.AccountApi.clearDefaultAccount(mGoogleApiClient);
mGoogleApiClient.disconnect();
mGoogleApiClient.connect();
updateUI(false);
}
}
// Revoking access from Google
private void revokeGPlusAccess(){
if(mGoogleApiClient.isConnected()){
Plus.AccountApi.clearDefaultAccount(mGoogleApiClient);
Plus.AccountApi.revokeAccessAndDisconnect(mGoogleApiClient)
.setResultCallback(new ResultCallback<Status>(){
@Override
public void onResult(Status s){
Log.e(TAG, "User access revoked!");
mGoogleApiClient.connect();
updateUI(false);
}
});
}
}
@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);
}
}
LoadProfileImage.java:
package com.example.testproject_gmaillogin;
import java.io.InputStream;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.util.Log;
import android.widget.ImageView;
/**
* Background async task to load user profile picture from url
**/
public class LoadProfileImage extends AsyncTask<String, Void, Bitmap> {
private ImageView bmImage;
public LoadProfileImage(ImageView bmImage){
this.bmImage = bmImage;
}
@Override
protected Bitmap doInBackground(String... urls){
String urlDisplay = urls[0];
Bitmap mIcon11 = null;
try{
InputStream in = new java.net.URL(urlDisplay).openStream();
mIcon11 = BitmapFactory.decodeStream(in);
}
catch(Exception ex){
Log.e("Error", ex.getMessage());
ex.printStackTrace();
}
return mIcon11;
}
@Override
protected void onPostExecute(Bitmap result){
bmImage.setImageBitmap(result);
}
}
我完成的其他步骤包括:
在https://console.developers.google.com/project创建了一个项目,并添加了Google+ API:
还创建了一个客户端ID,使用与该项目相同的SHA1和名称空间:
在Eclipse中:
我已安装google-play-services库:
并将其添加到项目中:
我还创建了一个版本为4.4.2的模拟器:
但是当我运行应用程序时,会出现以下错误,并且每次单击按钮时都会弹出此错误:
有人知道问题出在哪里吗?感谢您提前的回复。