Java tutorial
/* * Copyright (c) 2015 Odin Ugedal * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package com.ugedal.weeklyschedule; import android.content.Context; import android.content.DialogInterface; import android.content.SharedPreferences; import android.os.Bundle; import android.support.design.widget.NavigationView; import android.support.v4.view.GravityCompat; import android.support.v4.widget.DrawerLayout; import android.support.v4.widget.SwipeRefreshLayout; import android.support.v7.app.ActionBarDrawerToggle; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.text.SpannableString; import android.text.util.Linkify; import android.view.MenuItem; import android.widget.TextView; public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener { ListFragment mListFragment; SwipeRefreshLayout swipeContainer; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mListFragment = (ListFragment) getSupportFragmentManager().findFragmentById(R.id.list_fragment); swipeContainer = (SwipeRefreshLayout) findViewById(R.id.swipeContainer); DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); final NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close); drawer.setDrawerListener(toggle); toggle.syncState(); navigationView.setNavigationItemSelectedListener(this); SharedPreferences sharedPref = getPreferences(Context.MODE_PRIVATE); final int trinn = sharedPref.getInt(getString(R.string.current_grade_key), R.id.grade_1); navigationView.setCheckedItem(trinn); navigationView.post(new Runnable() { @Override public void run() { TextView text = (TextView) findViewById(R.id.textView); if (text != null) text.setText(navigationView.getMenu().findItem(trinn).getTitle()); } }); getSupportActionBar().setTitle(navigationView.getMenu().findItem(trinn).getTitle()); // Setup refresh listener which triggers new data loading swipeContainer.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() { @Override public void onRefresh() { mListFragment.refreshContent(); } }); swipeContainer.setColorSchemeResources(android.R.color.holo_blue_bright, android.R.color.holo_green_light, android.R.color.holo_orange_light, android.R.color.holo_red_light); if (savedInstanceState == null) swipeContainer.post(new Runnable() { @Override public void run() { swipeContainer.setRefreshing(true); } }); } public void setRefreshing(boolean refreshing) { if (swipeContainer != null) swipeContainer.setRefreshing(refreshing); } public ListFragment getListFragment() { return mListFragment; } @Override public void onBackPressed() { DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); if (drawer.isDrawerOpen(GravityCompat.START)) { drawer.closeDrawer(GravityCompat.START); } else { super.onBackPressed(); } } @SuppressWarnings("StatementWithEmptyBody") @Override public boolean onNavigationItemSelected(MenuItem item) { // Handle navigation view item clicks here. int id = item.getItemId(); int group_id = item.getGroupId(); if (group_id == R.id.trinn_chooser) { // Save new state, and update the fragment SharedPreferences sharedPref = getPreferences(Context.MODE_PRIVATE); SharedPreferences.Editor editor = sharedPref.edit(); editor.putInt(getString(R.string.current_grade_key), id); editor.apply(); TextView text = (TextView) findViewById(R.id.textView); text.setText(item.getTitle()); getSupportActionBar().setTitle(item.getTitle()); mListFragment.myList.clear(); mListFragment.adapter.notifyDataSetChanged(); swipeContainer.setRefreshing(true); mListFragment.refreshContent(); } if (id == R.id.nav_about) { AlertDialog alertDialog = new AlertDialog.Builder(MainActivity.this).create(); alertDialog.setTitle(getString(R.string.about)); final SpannableString s = new SpannableString(getText(R.string.about_message)); Linkify.addLinks(s, Linkify.WEB_URLS); alertDialog.setMessage(s); alertDialog.setButton(AlertDialog.BUTTON_NEUTRAL, getString(android.R.string.cancel), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); alertDialog.show(); } DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); drawer.closeDrawer(GravityCompat.START); return true; } }