Java tutorial
/* * Copyright (C) 2011 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 br.com.sigacon.coletaDados; import java.util.ArrayList; import android.app.AlertDialog; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.os.Handler; import android.provider.Settings; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.app.NavUtils; import android.support.v4.view.ViewPager; import android.util.Log; import android.view.View; import android.view.ViewGroup; import android.widget.TabHost; import android.widget.TabWidget; import android.widget.Toast; import br.com.sigacon.dashboard.MainActivity; import br.com.sigacon.sgcativosflorestais.R; import com.actionbarsherlock.app.ActionBar; import com.actionbarsherlock.app.SherlockFragmentActivity; import com.actionbarsherlock.view.Menu; import com.actionbarsherlock.view.MenuInflater; import com.actionbarsherlock.view.MenuItem; import com.google.android.gms.maps.GoogleMap; import com.google.android.gms.maps.SupportMapFragment; /** * Demonstrates combining a TabHost with a ViewPager to implement a tab UI * that switches between tabs and also allows the user to perform horizontal * flicks to move between the tabs. */ public class FragmentParcelasTabsPager extends SherlockFragmentActivity { TabHost mTabHost; ViewPager mViewPager; TabsAdapter mTabsAdapter; private boolean mapDefault = false; private GoogleMap map = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.fragment_tabs_pager); setTitle(R.string.dados_parcela); ActionBar actionBar = getSupportActionBar(); actionBar.setDisplayHomeAsUpEnabled(true); mTabHost = (TabHost) findViewById(android.R.id.tabhost); mTabHost.setup(); mViewPager = (ViewPager) findViewById(R.id.pager); mTabsAdapter = new TabsAdapter(this, mTabHost, mViewPager); mTabsAdapter.addTab(mTabHost.newTabSpec("maps").setIndicator(getString(R.string.mapa)), FragmentParcelasMap.CountingFragment.class, null); mTabsAdapter.addTab(mTabHost.newTabSpec("form").setIndicator(getString(R.string.formulario_parcela)), FragmentParcelasForm.CountingFragment.class, null); if (savedInstanceState != null) { mTabHost.setCurrentTabByTag(savedInstanceState.getString("tab")); } new Handler().postDelayed(new Runnable() { @Override public void run() { String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED); //Se vier null ou length == 0 por que o GPS esta desabilitado. Log.e("sigaLog", "provider " + String.valueOf(provider == null) + " ou " + ((provider.contains("gps")) ? provider : "not Gps")); if (provider == null || !provider.contains("gps")) { AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder( FragmentParcelasTabsPager.this); // Seta o Titulo do Dialog alertDialogBuilder.setTitle(R.string.atencao); Log.e("sigaLog", "alertDialogBuilder.setTitle"); // seta a mensagem alertDialogBuilder.setMessage(R.string.gps_desativado); alertDialogBuilder.setCancelable(false) .setPositiveButton(R.string.sim, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { //Para abrir a tela do menu pode fazer assim: Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); startActivityForResult(intent, 1); } }).setNegativeButton(R.string.nao, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); // Cria o alertDialog com o conteudo do alertDialogBuilder AlertDialog alertDialog = alertDialogBuilder.create(); Log.e("sigaLog", "alertDialog.create"); // Exibe o Dialog alertDialog.show(); Log.e("sigaLog", "alertDialog.show"); } } }, 1000); } @Override public boolean onOptionsItemSelected(MenuItem item) { Log.v("sigaLog", "menu"); switch (item.getItemId()) { case android.R.id.home: NavUtils.navigateUpTo(this, new Intent(this, MainActivity.class)); return true; case R.id.form_parcela_save: Log.v("sigaLog", "form_parcela_save"); Intent intent = new Intent(getApplicationContext(), FragmentArvores.class); startActivity(intent); //Toast.makeText(getApplicationContext(), "Teste", Toast.LENGTH_SHORT).show(); return true; case R.id.mapType: map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.mapParcelas)).getMap(); if (map != null) { if (mapDefault) map.setMapType(GoogleMap.MAP_TYPE_SATELLITE); else map.setMapType(GoogleMap.MAP_TYPE_NORMAL); mapDefault = !mapDefault; } else { Toast.makeText(getApplicationContext(), R.string.opcao_desabilitada_gps, Toast.LENGTH_SHORT).show(); } return true; case R.id.myLocation: map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.mapParcelas)).getMap(); if (map != null) { if (map.getMyLocation() != null) { Toast.makeText(getApplicationContext(), "Longitude: " + map.getMyLocation().getLongitude() + " | Latitude: " + map.getMyLocation().getLatitude(), Toast.LENGTH_SHORT).show(); } else { Toast.makeText(getApplicationContext(), R.string.localizacao_nao_encontrada, Toast.LENGTH_SHORT) .show(); } } else { Toast.makeText(getApplicationContext(), R.string.opcao_desabilitada_gps, Toast.LENGTH_SHORT).show(); } return true; } return super.onOptionsItemSelected(item); } @Override protected void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putString("tab", mTabHost.getCurrentTabTag()); } /** * This is a helper class that implements the management of tabs and all * details of connecting a ViewPager with associated TabHost. It relies on a * trick. Normally a tab host has a simple API for supplying a View or * Intent that each tab will show. This is not sufficient for switching * between pages. So instead we make the content part of the tab host * 0dp high (it is not shown) and the TabsAdapter supplies its own dummy * view to show as the tab content. It listens to changes in tabs, and takes * care of switch to the correct paged in the ViewPager whenever the selected * tab changes. */ public static class TabsAdapter extends FragmentPagerAdapter implements TabHost.OnTabChangeListener, ViewPager.OnPageChangeListener { private final Context mContext; private final TabHost mTabHost; private final ViewPager mViewPager; private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>(); static final class TabInfo { private final String tag; private final Class<?> clss; private final Bundle args; TabInfo(String _tag, Class<?> _class, Bundle _args) { tag = _tag; clss = _class; args = _args; } } static class DummyTabFactory implements TabHost.TabContentFactory { private final Context mContext; public DummyTabFactory(Context context) { mContext = context; } @Override public View createTabContent(String tag) { View v = new View(mContext); v.setMinimumWidth(0); v.setMinimumHeight(0); return v; } } public TabsAdapter(FragmentActivity activity, TabHost tabHost, ViewPager pager) { super(activity.getSupportFragmentManager()); mContext = activity; mTabHost = tabHost; mViewPager = pager; mTabHost.setOnTabChangedListener(this); mViewPager.setAdapter(this); mViewPager.setOnPageChangeListener(this); } public void addTab(TabHost.TabSpec tabSpec, Class<?> clss, Bundle args) { tabSpec.setContent(new DummyTabFactory(mContext)); String tag = tabSpec.getTag(); TabInfo info = new TabInfo(tag, clss, args); mTabs.add(info); mTabHost.addTab(tabSpec); notifyDataSetChanged(); } @Override public int getCount() { return mTabs.size(); } @Override public Fragment getItem(int position) { TabInfo info = mTabs.get(position); return Fragment.instantiate(mContext, info.clss.getName(), info.args); } @Override public void onTabChanged(String tabId) { int position = mTabHost.getCurrentTab(); mViewPager.setCurrentItem(position); } @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { } @Override public float getPageWidth(int position) { return (0.9f); } @Override public void onPageSelected(int position) { // Unfortunately when TabHost changes the current tab, it kindly // also takes care of putting focus on it when not in touch mode. // The jerk. // This hack tries to prevent this from pulling focus out of our // ViewPager. TabWidget widget = mTabHost.getTabWidget(); int oldFocusability = widget.getDescendantFocusability(); widget.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS); mTabHost.setCurrentTab(position); widget.setDescendantFocusability(oldFocusability); } @Override public void onPageScrollStateChanged(int state) { } } }