Java tutorial
/* * Copyright 2013 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.adictolinux.mfcclone; import org.adictolinux.mfcclone.R; import org.adictolinux.mfcclone.fragments.ForceKeysFragment; import org.adictolinux.mfcclone.fragments.KeyProfileFragment; import org.adictolinux.mfcclone.fragments.ManageKeyChainsFragment; import org.adictolinux.mfcclone.fragments.ManageProfilesFragment; import org.adictolinux.mfcclone.fragments.ImportTagFragment; import org.adictolinux.mfcclone.fragments.ManageTagsFragment; import org.adictolinux.mfcclone.fragments.ResetTagFragment; import org.adictolinux.mfcclone.fragments.SaveTagDataFragment; import android.app.Activity; import android.app.Fragment; import android.app.FragmentManager; import android.app.PendingIntent; import android.content.Intent; import android.content.IntentFilter; import android.content.res.Configuration; import android.nfc.NfcAdapter; import android.nfc.Tag; import android.nfc.tech.MifareClassic; import android.os.Bundle; import android.support.v4.app.ActionBarDrawerToggle; import android.support.v4.view.GravityCompat; import android.support.v4.widget.DrawerLayout; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.WindowManager; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ListView; public class MainActivity extends Activity { private Fragment scan_fragment = null; private int scan_fragment_type = 0; private DrawerLayout mDrawerLayout; private ListView mDrawerList; private ActionBarDrawerToggle mDrawerToggle; private CharSequence mDrawerTitle; private CharSequence mTitle; private String[] menuTitles; private NfcAdapter mAdapter = null; private PendingIntent mPendingIntent = null; private IntentFilter[] mFilters; private String[][] mTechLists = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mTitle = mDrawerTitle = getTitle(); menuTitles = getResources().getStringArray(R.array.menu_array); mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); mDrawerList = (ListView) findViewById(R.id.left_drawer); // set a custom shadow that overlays the main content when the drawer // opens mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START); // set up the drawer's list view with items and click listener mDrawerList.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_list_item, menuTitles)); mDrawerList.setOnItemClickListener(new DrawerItemClickListener()); // ActionBarDrawerToggle ties together the the proper interactions // between the sliding drawer and the action bar app icon mDrawerToggle = new ActionBarDrawerToggle(this, /* host Activity */ mDrawerLayout, /* DrawerLayout object */ R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */ R.string.drawer_open, /* "open drawer" description for accessibility */ R.string.drawer_close /* "close drawer" description for accessibility */ ) { public void onDrawerClosed(View view) { getActionBar().setTitle(mTitle); invalidateOptionsMenu(); // creates call to // onPrepareOptionsMenu() } public void onDrawerOpened(View drawerView) { getActionBar().setTitle(mDrawerTitle); invalidateOptionsMenu(); // creates call to // onPrepareOptionsMenu() } }; mDrawerLayout.setDrawerListener(mDrawerToggle); // enable ActionBar app icon to behave as action to toggle nav drawer getActionBar().setDisplayHomeAsUpEnabled(true); getActionBar().setHomeButtonEnabled(true); mAdapter = NfcAdapter.getDefaultAdapter(this); mPendingIntent = PendingIntent.getActivity(this, 0, new Intent(this, getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0); mFilters = new IntentFilter[] { new IntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED) }; // Setup a tech list for all NfcF tags mTechLists = new String[][] { new String[] { MifareClassic.class.getName() } }; // Escondemos el teclado hasta que el user toca una entrada de texto getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN); if (savedInstanceState == null) { replaceFragment(new ForceKeysFragment(), 0); } } @Override public void onResume() { super.onResume(); mAdapter.enableForegroundDispatch(this, mPendingIntent, mFilters, mTechLists); } @Override public void onNewIntent(Intent intent) { String action = intent.getAction(); if (scan_fragment != null && NfcAdapter.ACTION_TECH_DISCOVERED.equals(action)) { Tag tag = (Tag) intent.getExtras().getParcelable(NfcAdapter.EXTRA_TAG); switch (scan_fragment_type) { case 0: ((ForceKeysFragment) scan_fragment).tagFound(tag); break; case 1: ((ImportTagFragment) scan_fragment).tagFound(tag); break; case 2: ((SaveTagDataFragment) scan_fragment).tagFound(tag); break; case 5: ((ResetTagFragment) scan_fragment).tagFound(tag); break; } } } public void setScanFragment(Fragment fragment, int type) { scan_fragment = fragment; scan_fragment_type = type; } @Override public void onPause() { super.onPause(); mAdapter.disableForegroundDispatch(this); } /* Called whenever we call invalidateOptionsMenu() */ @Override public boolean onPrepareOptionsMenu(Menu menu) { return super.onPrepareOptionsMenu(menu); } /* The click listner for ListView in the navigation drawer */ private class DrawerItemClickListener implements ListView.OnItemClickListener { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { selectItem(position); } } private void selectItem(int position) { switch (position) { case 0: replaceFragment(new ForceKeysFragment(), 0); break; case 1: replaceFragment(new ImportTagFragment(), position); break; case 2: replaceFragment(new ManageProfilesFragment(), position); break; case 3: replaceFragment(new ManageKeyChainsFragment(), position); break; case 4: replaceFragment(new ManageTagsFragment(), position); break; case 5: replaceFragment(new ResetTagFragment(), position); break; } } private void replaceFragment(Fragment fragment, int position) { Bundle args = new Bundle(); // Guardamos la instancia de scan o reseteamos estado switch (position) { case 0: case 1: case 5: scan_fragment = fragment; scan_fragment_type = position; break; default: scan_fragment = null; } args.putString(KeyProfileFragment.ARG_SECTION, getResources().getStringArray(R.array.menu_array)[position]); fragment.setArguments(args); FragmentManager fragmentManager = getFragmentManager(); fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit(); // update selected item and title, then close the drawer mDrawerList.setItemChecked(position, true); setTitle(menuTitles[position]); mDrawerLayout.closeDrawer(mDrawerList); } @Override public void setTitle(CharSequence title) { mTitle = title; getActionBar().setTitle(mTitle); } /** * When using the ActionBarDrawerToggle, you must call it during * onPostCreate() and onConfigurationChanged()... */ @Override protected void onPostCreate(Bundle savedInstanceState) { super.onPostCreate(savedInstanceState); // Sync the toggle state after onRestoreInstanceState has occurred. mDrawerToggle.syncState(); } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); // Pass any configuration change to the drawer toggls mDrawerToggle.onConfigurationChanged(newConfig); } @Override public boolean onOptionsItemSelected(MenuItem item) { // Pass the event to ActionBarDrawerToggle, if it returns // true, then it has handled the app icon touch event if (mDrawerToggle.onOptionsItemSelected(item)) { return true; } // Handle your other action bar items... return super.onOptionsItemSelected(item); } }