MainActivity.java

/*

    Android Activity LAUNCHER SCREEN
    + Firebase Login Detect
    + Runable

    http://github.com/imammubin

*/

package com.togebogor.www;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Handler;
import android.support.constraint.ConstraintLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.TextView;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GoogleApiAvailability;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.iid.FirebaseInstanceId;
import com.google.firebase.iid.InstanceIdResult;
 import com.togebogor.www.FeedActivity;
 import com.togebogor.www.LoginActivity;
 import com.togebogor.www.R;

public class MainActivity extends AppCompatActivity {

    public TextView textView;
    private FirebaseAuth auth;
    private FirebaseUser user;
    private static final String TAG = MainActivity.class.getSimpleName();
    private Handler myHandler;
    private Runnable myRunnableFeed,myRunnableLoginActivity;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        final SharedPreferences pref = getApplicationContext().getSharedPreferences("APP_NAME", 0);
        if (savedInstanceState == null) {
            int success = GoogleApiAvailability.getInstance().isGooglePlayServicesAvailable(this);
            if (success != ConnectionResult.SUCCESS) {
                GoogleApiAvailability.getInstance().makeGooglePlayServicesAvailable(this);
                finish();
            }
        }

        FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(
        MainActivity.this, new OnSuccessListener<InstanceIdResult>() {
            @Override
            public void onSuccess(InstanceIdResult instanceIdResult) {
                String updatedUserToken = instanceIdResult.getToken();
                Log.e("Updated FIrebaseAuth Token", updatedUserToken);
            }
        });

        setContentView(R.layout.activity_main);
        textView = findViewById(R.id.textView);
        ConstraintLayout layer = (ConstraintLayout) findViewById(R.id.mainActivityLayer);

        auth = FirebaseAuth.getInstance();
        user = auth.getCurrentUser();
        if(user != null) {
            SharedPreferences.Editor editor = pref.edit();
            editor.putBoolean("isLogin", true);
            editor.apply();
        }

        boolean isLogin = pref.getBoolean("isLogin", false);
        openActivity(isLogin);

    } /////////////////////////   ENDING ONCREATE() /////////////////////////

    private void openActivity(boolean isLogin) {
        ConstraintLayout layer = (ConstraintLayout) findViewById(R.id.mainActivityLayer);
        myHandler=new Handler();
        myRunnableFeed=new Runnable() {
            @Override
            public void run() {
                startActivity(new Intent(MainActivity.this, FeedActivity.class));
                finish();
            }
        };
        myRunnableLoginActivity=new Runnable() {
            @Override
            public void run() {
                startActivity(new Intent(MainActivity.this, LoginActivity.class));
                finish();
            }
        };

        if (isLogin) {
            myHandler.postDelayed(myRunnableFeed,5000/*Delay for 5 Second*/);
            layer.setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {
                    myHandler.removeCallbacks(myRunnableFeed);
                    startActivity(new Intent(MainActivity.this, FeedActivity.class));
                    finish();
                }
            });
        }else{
            myHandler.postDelayed(myRunnableLoginActivity,5000/* Delay for 5 Second*/);
            layer.setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {
                    myHandler.removeCallbacks(myRunnableLoginActivity);
                    startActivity(new Intent(MainActivity.this, LoginActivity.class));
                    finish();
                }
            });
        }

    }
}