Java tutorial
package com.mech.tech.meet.activities.scenario; import android.annotation.TargetApi; import android.app.AlarmManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.net.Uri; import android.os.Build; import android.support.annotation.NonNull; import android.support.v7.app.ActionBarActivity; import android.support.v7.app.ActionBar; import android.os.Bundle; import android.util.AttributeSet; import android.view.Menu; import android.view.MenuItem; import android.support.v4.widget.DrawerLayout; import android.view.View; import android.view.Window; import android.view.WindowManager; import android.widget.Toast; import com.mech.tech.meet.NavigationDrawerFragment; import com.mech.tech.meet.R; import com.mech.tech.meet.running.services.MyNotificationService; import com.mech.tech.meet.scenario.fragments.DeveloperFragment; import com.mech.tech.meet.scenario.fragments.EventFragment; import com.mech.tech.meet.scenario.fragments.EventFragmentForSelection; import com.mech.tech.meet.scenario.fragments.PartnersFragment; import com.mech.tech.meet.scenario.fragments.PostCardFragment; import com.mech.tech.meet.scenario.fragments.LicenseActivity; import java.util.Calendar; public class MainActivity extends ActionBarActivity implements NavigationDrawerFragment.NavigationDrawerCallbacks { // CardView cv= (CardView) findViewById(R.id.card_view); private boolean doubleBackToExitPressedOnce = false; /** * Fragment managing the behaviors, interactions and presentation of the navigation drawer. */ private NavigationDrawerFragment mNavigationDrawerFragment; /** * Used to store the last screen title. For use in {@link #restoreActionBar()}. */ private CharSequence mTitle; @TargetApi(Build.VERSION_CODES.LOLLIPOP) @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); int currentapiVersion = android.os.Build.VERSION.SDK_INT; if (currentapiVersion >= Build.VERSION_CODES.LOLLIPOP) { Window window = getWindow(); window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); window.setStatusBarColor(getResources().getColor(R.color.material_wala_deep_blue)); } Calendar cal = Calendar.getInstance(); cal.add(Calendar.SECOND, 10); Intent intent = new Intent(this, MyNotificationService.class); PendingIntent pintent = PendingIntent.getService(this, 0, intent, 0); AlarmManager alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE); alarm.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), 36000 * 1000 * 2, pintent); startService(new Intent(getBaseContext(), MyNotificationService.class)); mNavigationDrawerFragment = (NavigationDrawerFragment) getSupportFragmentManager() .findFragmentById(R.id.navigation_drawer); mTitle = getTitle(); // Set up the drawer. mNavigationDrawerFragment.setUp(R.id.navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout)); } @TargetApi(Build.VERSION_CODES.LOLLIPOP) @Override public View onCreateView(String name, @NonNull Context context, @NonNull AttributeSet attrs) { /* int currentapiVersion = android.os.Build.VERSION.SDK_INT; if (currentapiVersion >= Build.VERSION_CODES.LOLLIPOP) { Window window = getWindow(); window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); window.setStatusBarColor(getResources().getColor(R.color.material_wala_deep_blue)); } */ return super.onCreateView(name, context, attrs); } @Override public void onNavigationDrawerItemSelected(int position) { // update the main content by replacing fragments doubleBackToExitPressedOnce = false; if (position == 7) { getSupportFragmentManager().beginTransaction() .replace(R.id.container, DeveloperFragment.newInstance(position + 1)).commit(); } if (position == 0) { getSupportFragmentManager().beginTransaction() .replace(R.id.container, EventFragment.newInstance(position + 1)).commit(); } if (position == 5) { getSupportFragmentManager().beginTransaction() .replace(R.id.container, PartnersFragment.newInstance(position + 1)).commit(); } if (position > 0 && position < 5) { getSupportFragmentManager().beginTransaction() .replace(R.id.container, EventFragmentForSelection.newInstance(position + 1)).commit(); } if (position == 6) { getSupportFragmentManager().beginTransaction() .replace(R.id.container, PostCardFragment.newInstance(position + 1)).commit(); } } public void onSectionAttached(int number) { switch (number) { case 1: mTitle = getString(R.string.title_section1); break; case 2: mTitle = getString(R.string.title_section2); break; case 3: mTitle = getString(R.string.title_section3); break; case 4: mTitle = getString(R.string.title_section4); break; case 5: mTitle = getString(R.string.title_section5); break; case 6: mTitle = getString(R.string.title_section6); break; case 7: mTitle = getString(R.string.title_section9); break; case 8: mTitle = getString(R.string.title_section8); break; } } public void restoreActionBar() { ActionBar actionBar = getSupportActionBar(); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD); actionBar.setDisplayShowTitleEnabled(true); actionBar.setTitle(mTitle); } @Override public boolean onCreateOptionsMenu(Menu menu) { if (!mNavigationDrawerFragment.isDrawerOpen()) { // Only show items in the action bar relevant to this screen // if the drawer is not showing. Otherwise, let the drawer // decide what to show in the action bar. getMenuInflater().inflate(R.menu.menu_main, menu); restoreActionBar(); return true; } return super.onCreateOptionsMenu(menu); } @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_facebook) { String url = "http://www.facebook.com/mtmuec"; Intent i = new Intent(Intent.ACTION_VIEW); i.setData(Uri.parse(url)); startActivity(i); return true; } if (id == R.id.action_twitter) { String url = "http://www.twitter.com/mechtechmeet"; Intent i = new Intent(Intent.ACTION_VIEW); i.setData(Uri.parse(url)); startActivity(i); return true; } if (id == R.id.action_licences) { Intent i = new Intent(this, LicenseActivity.class); startActivity(i); return true; } if (id == R.id.action_query) { Intent intent = new Intent(Intent.ACTION_SEND); intent.setType("message/rfc822"); intent.putExtra(Intent.EXTRA_EMAIL, new String[] { "mechtechmeet@gmail.com" }); intent.putExtra(Intent.EXTRA_SUBJECT, "subject"); intent.putExtra(Intent.EXTRA_TEXT, "message"); Intent mailer = Intent.createChooser(intent, null); startActivity(mailer); return true; } return super.onOptionsItemSelected(item); } /** * A placeholder fragment containing a simple view. */ @Override protected void onResume() { super.onResume(); // .... other stuff in my onResume .... this.doubleBackToExitPressedOnce = false; } @Override public void onBackPressed() { if (doubleBackToExitPressedOnce) { super.onBackPressed(); return; } this.doubleBackToExitPressedOnce = true; Toast.makeText(this, "Press twice to exit", Toast.LENGTH_SHORT).show(); } }