content: package com.revo.evabs;
  
  import android.content.Intent;
  import android.content.SharedPreferences;
  import android.graphics.Typeface;
  import android.os.Bundle;
  import android.support.design.widget.FloatingActionButton;
  import android.support.design.widget.Snackbar;
  import android.view.View;
  import android.support.design.widget.NavigationView;
  import android.support.v4.view.GravityCompat;
  import android.support.v4.widget.DrawerLayout;
  import android.support.v7.app.ActionBarDrawerToggle;
  import android.support.v7.app.AppCompatActivity;
  import android.support.v7.widget.Toolbar;
  import android.view.Menu;
  import android.view.MenuItem;
  import android.view.animation.Animation;
  import android.view.animation.AnimationUtils;
  import android.widget.Button;
  import android.widget.ImageView;
  import android.widget.TextView;
  
  public class Launch extends AppCompatActivity
          implements NavigationView.OnNavigationItemSelectedListener {
  
      public String USER = "username";
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_launch);
          Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
          setSupportActionBar(toolbar);
  
          TextView tvlaunchname = findViewById(R.id.textViewlaunchname);
          TextView tvprojpage = findViewById(R.id.textViewlaunchprojpage);
          TextView tvlaunchversion = findViewById(R.id.textViewlaunchversion);
          ImageView ivlaunchimg = findViewById(R.id.imageViewlaunch);
  
          Button btnlaunchclass = findViewById(R.id.buttonlaunchchall);
          btnlaunchclass.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View view) {
                  Intent challs = new Intent(Launch.this, ChallengeList.class);
                  startActivity(challs);
              }
          });
  
          Button btnlaunchflag = findViewById(R.id.buttonlaunchflag);
          btnlaunchflag.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View view) {
                  Intent theflag = new Intent(Launch.this, flagcheck.class);
                  startActivity(theflag);
              }
          });
  
  
  
          Animation imgrotate = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.rotation);
          ivlaunchimg.startAnimation(imgrotate);
          //imgrotate.setRepeatCount(Animation.INFINITE);
  
  
          Typeface font1 = Typeface.createFromAsset(getAssets(), "fonts/ssb.otf");
          tvlaunchname.setTypeface(font1);
          tvprojpage.setTypeface(font1);
          tvlaunchversion.setTypeface(font1);
  
          Boolean isFirstRun = getSharedPreferences("PREFERENCE", MODE_PRIVATE)
                  .getBoolean("isFirstRun", true);
  
          if (isFirstRun) {
              //show sign up activity
              startActivity(new Intent(Launch.this, Welcome0.class));
              finish();
          }
  
          getSharedPreferences("PREFERENCE", MODE_PRIVATE).edit()
                  .putBoolean("isFirstRun", false).commit();
  
          SharedPreferences sp = getSharedPreferences("DETAILS", MODE_PRIVATE);
  
          if (sp.contains(USER)) {
              String uname = sp.getString(USER, "");
              tvlaunchname.setText("Hi, " + uname);
          }
  
          DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
          ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                  this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
          drawer.addDrawerListener(toggle);
          toggle.syncState();
  
          NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
          navigationView.setNavigationItemSelectedListener(this);
      }
  
      @Override
      public void onBackPressed() {
          DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
          if (drawer.isDrawerOpen(GravityCompat.START)) {
              drawer.closeDrawer(GravityCompat.START);
          } else {
              super.onBackPressed();
          }
      }
  
      @Override
      public boolean onCreateOptionsMenu(Menu menu) {
          // Inflate the menu; this adds items to the action bar if it is present.
          getMenuInflater().inflate(R.menu.launch, 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();
  
          //noinspection SimplifiableIfStatement
          if (id == R.id.action_settings) {
              return true;
          }
  
          return super.onOptionsItemSelected(item);
      }
  
      @SuppressWarnings("StatementWithEmptyBody")
      @Override
      public boolean onNavigationItemSelected(MenuItem item) {
          // Handle navigation view item clicks here.
          int id = item.getItemId();
  
          if (id == R.id.nav_camera) {
              Intent i = new Intent(Launch.this, ChallengeList.class);
              startActivity(i);
          } else if (id == R.id.nav_gallery) {
              Intent j = new Intent(Launch.this, flagcheck.class);
              startActivity(j);
          }
  
          DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
          drawer.closeDrawer(GravityCompat.START);
          return true;
      }
  }
  