BaseActivity.java

package com.lovamimi;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;

import com.facebook.SessionState;
import com.mixpanel.android.mpmetrics.MixpanelAPI;

public class BaseActivity extends Activity {

    private MixpanelAPI mixpanel;
    private ProgressDialog dialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mixpanel = MixpanelAPI.getInstance(this, "e516b8643dc2d4d9b1779d243b7db7e5");
    }

    protected void track(String eventName) {
        mixpanel.track("Android:" + eventName, null);
    }

    protected void e(String s) {
        Log.e(this.getClass().toString(), s);
    }

    protected void i(String s) {
        Log.i(this.getClass().toString(), s);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mixpanel.flush();
    }

    public String getSessionId() {
        LovamimiApplication app = (LovamimiApplication) getApplication();
        return app.getSessionId();
    }

    public void setSessionId(String sessionId) {
        LovamimiApplication app = (LovamimiApplication) getApplication();
        app.setSessionId(sessionId);
    }

    private void lovamimiLogin(final Context context,
                               final Class nextActivityClass,
                               String fbSessionId) {
        new AsyncTask<String, Void, String>() {
            @Override
            protected void onPostExecute(String sessionId) {
                super.onPostExecute(sessionId);
                dialog.cancel();
                setSessionId(sessionId);
                Intent intent = new Intent(context, nextActivityClass);
                putExtraSecret(intent);
                startActivity(intent);
            }

            @Override
            protected String doInBackground(String... strings) {
                String fbSessionId = strings[0];
                LovamimiApplication app = (LovamimiApplication)getApplication();
                String deviceToken = app.getDeviceToken();
                return com.lovamimi.Session.login(fbSessionId, deviceToken);
            }
        }.execute(fbSessionId);
    }

    private void tryLogin(final Context context, final Class nextActivityClass) {
        dialog = ProgressDialog.show(this, "ロバ耳", "ログイン中");
        // Facebook login
        com.facebook.Session.openActiveSession(this, true, new com.facebook.Session.StatusCallback() {
            @Override
            public void call(com.facebook.Session session, SessionState state, Exception exception) {
                if (session.isOpened()) {
                    lovamimiLogin(context, nextActivityClass, session.getAccessToken());
                }
            }
        });
    }

    private void showLoginDialog(final Class nextActivityClass) {
        track("Showed Login Dialog");
        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
        alertDialogBuilder.setTitle("ログイン");
        alertDialogBuilder.setMessage("匿名投稿といいね！をするには Facebook ログインが必要です");
        alertDialogBuilder.setPositiveButton("Facebook ログイン",
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        track("Clicked button Login Dialog");
                        tryLogin(BaseActivity.this, nextActivityClass);
                    }
                });
        alertDialogBuilder.setNegativeButton("キャンセル",
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        track("Canceled Login Dialog");
                    }
                });
        alertDialogBuilder.setCancelable(true);
        AlertDialog alertDialog = alertDialogBuilder.create();
        alertDialog.show();
    }

    protected void loginAndNextActivity(Class nextActivityClass) {
        if (getSessionId() == null) {
            showLoginDialog(nextActivityClass);
        } else {
            Intent intent = new Intent(this, nextActivityClass);
            putExtraSecret(intent);
            startActivity(intent);
        }
    }

    private void putExtraSecret(Intent intent) {
        if (getIntent().getExtras() != null) {
            Secret secret = (Secret) getIntent().getExtras().get("secret");
            intent.putExtra("sid", secret.sid);
        }
    }
}