我用Facebook SDK构建了一个应用程序，一切都在模拟器上工作正常，但当我将我的应用程序导出到我的移动设备上运行时，我无法登录，令人沮丧，因为这是我的第一个应用程序和我以为一切都没有错误。
我的登录也可以作为注册按钮。当没有帐户的人尝试登录时，它会使用Facebook中的数据自动创建帐户。
我正在使用PHP将数据插入我的数据库，当有人试图登录时，我正在调用此函数：
case "loginfb":
facebook_func($_POST['email'],$_POST['name'],$_POST['gender'],$_POST['image']);
我的函数调用查询来检查已发送的电子邮件是否已存在以进行正常登录，否则会创建一个新帐户。
function facebook_func($email,$name,$gender,$image){
$result = db_queries("SELECT * FROM users WHERE email='$email'");
$row = mysqli_fetch_array($result);
if($row[16] == 1){ //row 16 check if the account uses social network login
if($row[0]){ //Check if the id exists on database
echo $row[0];
online_func($row[3],$row[0]);
}else{
//Inserts new account into the Database
//echo id from the user
}
}
我正在回应用户的Id以将其保存在Java会话中。
会话代码：
public class NewSession extends Application {
Session session = new Session();
public String getUserId() {
return session.suserid;
}
}
我的主要活动完整代码：
public class MainActivity extends Activity {
private EditText email, password;
private TextView status;
private CallbackManager callbackManager;
private LoginButton loginButton;
@Override
protected void onActivityResult(int requestCode, int responseCode, Intent data) {
super.onActivityResult(requestCode, responseCode, data);
callbackManager.onActivityResult(requestCode, responseCode, data);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(this.getApplicationContext());
setContentView(R.layout.activity_main);
email = (EditText) findViewById(R.id.email);
password = (EditText) findViewById(R.id.password);
status = (TextView) findViewById(R.id.statusField);
callbackManager = CallbackManager.Factory.create();
loginButton = (LoginButton) findViewById(R.id.login_button);
List < String > permissionNeeds = Arrays.asList("user_photos", "email");
loginButton.setReadPermissions(permissionNeeds);
loginButton.registerCallback(callbackManager, new FacebookCallback < LoginResult > () {@Override
public void onSuccess(LoginResult loginResult) {
System.out.println("onSuccess");
GraphRequest request = GraphRequest.newMeRequest(loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject object,
GraphResponse response) {
// TODO Auto-generated method stub
// Application code
Log.v("LoginActivity", response.toString());
//System.out.println("Check: " + response.toString());
try {
String id = object.getString("id");
String name = object.getString("name");
String image = "http://graph.facebook.com/" + id + "/picture?width=600&height=600";
String email = object.getString("email");
String gender = object.getString("gender");
String getgender = "";
if (getgender.equals("male")) {
getgender = "2";
} else {
getgender = "1";
}
facebookLogin(email, name, getgender, image);
} catch (JSONException e) {
e.printStackTrace();
}
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "id,name,email,gender");
request.setParameters(parameters);
request.executeAsync();
}
@Override
public void onCancel() {
System.out.println("onCancel");
}
@Override
public void onError(FacebookException exception) {
System.out.println("onError");
Log.v("LoginActivity", exception.getCause().toString());
}
});
}
public void login(View view) {
String getemail = email.getText().toString();
String getpassword = password.getText().toString();
new SigninActivity(this, status).execute(getemail, getpassword);
}
public void facebookLogin(String email, String name, String gender, String image) {
new FBSigninActivity(this, status).execute(email, name, gender, image);
Toast.makeText(getBaseContext(), "...",
Toast.LENGTH_LONG).show();
}
}
我的facebook登录类
public class FBSigninActivity extends AsyncTask < String, Void, String > {
private TextView statusField;
private Context context;
private static final int LONG_DELAY = 3500; // 3.5 seconds
public FBSigninActivity(Context context, TextView statusField) {
this.context = context;
this.statusField = statusField;
}
@Override
protected String doInBackground(String...arg0) {
try {
String getemail = (String) arg0[0];
String getname = (String) arg0[1];
String getgender = (String) arg0[2];
String getimage = (String) arg0[3];
String link = "http://www.website.pt/Android/index.php?section=loginfb";
String data = URLEncoder.encode("email", "UTF-8") + "=" + URLEncoder.encode(getemail, "UTF-8");
data += "&" + URLEncoder.encode("name", "UTF-8") + "=" + URLEncoder.encode(getname, "UTF-8");
data += "&" + URLEncoder.encode("gender", "UTF-8") + "=" + URLEncoder.encode(getgender, "UTF-8");
data += "&" + URLEncoder.encode("image", "UTF-8") + "=" + URLEncoder.encode(getimage, "UTF-8");
URL url = new URL(link);
URLConnection conn = url.openConnection();
conn.setDoOutput(true);
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write(data);
wr.flush();
Authenticator.setDefault(new Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("user", "pass".toCharArray());
}
});
BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
StringBuilder sb = new StringBuilder();
String line = null;
// Read Server Response
while ((line = reader.readLine()) != null) {
sb.append(line);
break;
}
return sb.toString();
} catch (Exception e) {
return new String("Exception: " + e.getMessage());
}
}
@Override
protected void onPostExecute(String result) {
if (result == "") {
Toast.makeText(context, "shows error",
Toast.LENGTH_LONG).show();
} else {
Toast.makeText(context, "welcome message",
Toast.LENGTH_LONG).show();
String newuser = result.substring(0, 1);
String newid = result.substring(1);
if (newuser.equals("N")) {
Toast.makeText(context, "...",
Toast.LENGTH_LONG).show();
Session.suserid = newid;
Intent in = new Intent(context,
editProfile.class);
in .putExtra("checku", "new");
context.startActivity( in );
}else{
context.startActivity(new Intent(context, ListUsersActivity.class));
Session.suserid = result;
}
}
}
}
感谢。
答案 0 :(得分：0)
当您创建一个版本apk时，它使用不同的密钥库进行签名，因此您创建并放入Facebook应用程序设置的第一个密钥哈希将无法用于发布apk。
您需要为新的apk获取另一个密钥哈希值，并将其添加到您的设置中。