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 com.example.snowball; import android.app.ActionBar.OnNavigationListener; import android.app.Activity; import android.app.Fragment; import android.app.FragmentManager; import android.content.Context; import android.content.res.Configuration; import android.os.Bundle; import android.support.v4.app.ActionBarDrawerToggle; import android.support.v4.widget.DrawerLayout; import android.util.DisplayMetrics; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.view.WindowManager; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.SearchView; import android.widget.TextView; public class MainActivity extends Activity { private DrawerLayout mDrawerLayout; private ListView mDrawerList; private ActionBarDrawerToggle mDrawerToggle; private Fragment fragment = null; private CharSequence mDrawerTitle; private CharSequence mTitle; private String[] mPlanetTitles; private int menuitem; private int height; private int width; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mTitle = mDrawerTitle = getTitle(); mPlanetTitles = getResources().getStringArray(R.array.menu_array); mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); mDrawerList = (ListView) findViewById(R.id.left_drawer); WindowManager manager = (WindowManager) this.getSystemService(Context.WINDOW_SERVICE); DisplayMetrics dm = new DisplayMetrics(); manager.getDefaultDisplay().getMetrics(dm); width = dm.widthPixels; height = dm.heightPixels; // set a custom shadow that overlays the main content when the drawer // opens // mDrawerLayout.setDrawerShadow(R.drawable.nav_icon_menu, // GravityCompat.START); // mDrawerLayout.setContentDescription(""); // set up the drawer's list view with items and click listener MyListAdapter myAdapter = new MyListAdapter(this, mPlanetTitles); mDrawerList.setAdapter(myAdapter); mDrawerList.setOnItemClickListener(new DrawerItemClickListener()); // enable ActionBar app icon to behave as action to toggle nav drawer getActionBar().setDisplayHomeAsUpEnabled(true); getActionBar().setHomeButtonEnabled(true); // 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.nav_icon_menu, /* 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); actionStyle(menuitem); invalidateOptionsMenu(); // creates call to // onPrepareOptionsMenu() } public void onDrawerOpened(View drawerView) { getActionBar().setTitle(mDrawerTitle); getActionBar().setNavigationMode(0); invalidateOptionsMenu(); // creates call to // onPrepareOptionsMenu() } }; mDrawerLayout.setDrawerListener(mDrawerToggle); if (savedInstanceState == null) { menuitem = 1; selectItem(1); actionStyle(1); } } @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.main, menu); MenuItem searchItem = menu.findItem(R.id.action_websearch); SearchView searchView = (SearchView) searchItem.getActionView(); searchView.setQueryHint("///"); searchView.setQueryRefinementEnabled(false); // SearchView return super.onCreateOptionsMenu(menu); } /* Called whenever we call invalidateOptionsMenu() */ @Override public boolean onPrepareOptionsMenu(Menu menu) { // If the nav drawer is open, hide action items related to the content // view boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList); if (menuitem == 1) { menu.findItem(R.id.action_websearch).setVisible(drawerOpen); menu.findItem(R.id.action_edit).setVisible(!drawerOpen); menu.findItem(R.id.action_friends).setVisible(false); } else if (menuitem == 6) { menu.findItem(R.id.action_websearch).setVisible(true); menu.findItem(R.id.action_edit).setVisible(false); menu.findItem(R.id.action_friends).setVisible(!drawerOpen); menu.findItem(R.id.action_friends).setIcon(R.drawable.icon_tool_more); } return super.onPrepareOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { // The action bar home/up action should open or close the drawer. // ActionBarDrawerToggle will take care of this. if (mDrawerToggle.onOptionsItemSelected(item)) { return true; } // Handle action buttons switch (item.getItemId()) { case R.id.action_websearch: // create intent to perform web search for this planet return true; default: return super.onOptionsItemSelected(item); } } /* 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) { menuitem = position; selectItem(position); actionStyle(menuitem); } } public class MyListAdapter extends BaseAdapter { private String[] strlist; private LayoutInflater mInflater; public MyListAdapter() { } public MyListAdapter(Context context, String[] mstrlist) { this.mInflater = LayoutInflater.from(context); this.strlist = mstrlist; } class ViewHolder { public LinearLayout ll; public ImageView iv; public TextView tv; } @Override public int getCount() { // TODO Auto-generated method stub return strlist.length; } @Override public Object getItem(int position) { // TODO Auto-generated method stub return strlist[position]; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } @Override public View getView(final int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub ViewHolder holder = null; holder = new ViewHolder(); convertView = mInflater.inflate(R.layout.drawmenu_list_item, null); holder.ll = (LinearLayout) convertView.findViewById(R.id.drawmenu_ll_item); holder.iv = (ImageView) convertView.findViewById(R.id.drawmenu_iv_item); holder.tv = (TextView) convertView.findViewById(R.id.drawmenu_tv_item); // holder.iv.setBackgroundResource(R.drawable.refused_task); switch (position) { case 0: convertView = mInflater.inflate(R.layout.drawmenu_list_useritem, null); holder.ll = (LinearLayout) convertView.findViewById(R.id.drawmenu_ll_useritem); holder.iv = (ImageView) convertView.findViewById(R.id.drawmenu_iv_useritem); holder.tv = (TextView) convertView.findViewById(R.id.drawmenu_tv_useritem); holder.iv.setBackgroundResource(R.drawable.nine_task); break; case 1: holder.iv.setBackgroundResource(R.drawable.icon_menu_timeline); break; case 2: holder.iv.setBackgroundResource(R.drawable.icon_menu_stock); break; case 3: holder.iv.setBackgroundResource(R.drawable.icon_menu_message); break; case 4: holder.iv.setBackgroundResource(R.drawable.icon_menu_classic); break; case 5: holder.iv.setBackgroundResource(R.drawable.icon_menu_profit); break; case 6: holder.iv.setBackgroundResource(R.drawable.icon_menu_findpeople); break; case 7: holder.iv.setBackgroundResource(R.drawable.icon_menu_comment); break; case 8: holder.iv.setBackgroundResource(R.drawable.icon_menu_at); break; } holder.tv.setText(strlist[position].toString()); if (position == 8) { holder.tv.setText("@" + strlist[position].toString()); } return convertView; } } private void selectItem(int position) { // update the main content by replacing fragments mDrawerLayout.closeDrawer(mDrawerList); // Bundle args=null; fragment = new DynamicStateFragment(); if (position == 6) { fragment = new SnowBallFriendsFragment(height, width); } // args = new Bundle(); // args.putInt(String.valueOf(position), position); // fragment.setArguments(args); mTitle = mPlanetTitles[position]; switch (position) { case 1: mTitle = ""; break; } FragmentManager fragmentManager = getFragmentManager(); fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit(); // fragmentManager.; setTitle(mTitle); } @Override public void setTitle(CharSequence title) { mTitle = title; getActionBar().setTitle(title); } /** * 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); } private void actionStyle(int menuitem) { switch (menuitem) { case 0: getActionBar().setNavigationMode(0); setTitle(""); break; case 1: String[] arraylist = getResources().getStringArray(R.array.list_array); // SpinnerAdapter mSpinnerAdapter=ArrayAdapter.createFromResource(this, // R.array.list_array, // android.R.layout.simple_spinner_dropdown_item); SpinnerAdapter mSpinnerAdapter = new SpinnerAdapter(getBaseContext(), arraylist); getActionBar().setNavigationMode(getActionBar().NAVIGATION_MODE_LIST);//NAVIGATION_MODE_LIST // getActionBar().set getActionBar().setListNavigationCallbacks(mSpinnerAdapter, mOnNavigationListener); break; case 6: getActionBar().setNavigationMode(0); break; default: break; } } OnNavigationListener mOnNavigationListener = new OnNavigationListener() { @Override public boolean onNavigationItemSelected(int position, long itemId) { // Fragment newFragment = new DynamicStateFragment(); // FragmentManager fragmentManager = getFragmentManager(); // fragmentManager.beginTransaction() // .replace(R.id.content_frame, newFragment).commit(); return true; } }; public class SpinnerAdapter extends ArrayAdapter<String> { private Context mContext; private String[] mStringArray; public SpinnerAdapter(Context context, String[] stringArray) { super(context, android.R.layout.simple_spinner_item, stringArray); mContext = context; mStringArray = stringArray; } @Override public View getDropDownView(int position, View convertView, ViewGroup parent) { // Spinner if (convertView == null) { LayoutInflater inflater = LayoutInflater.from(mContext); //Layout convertView = inflater.inflate(android.R.layout.simple_spinner_dropdown_item, parent, false); convertView.setBackgroundColor(getResources().getColor(R.color.lightwhite)); } TextView tv = (TextView) convertView.findViewById(android.R.id.text1); tv.setText(mStringArray[position]); tv.setTextColor(getResources().getColor(R.color.black)); return convertView; } @Override public View getView(int position, View convertView, ViewGroup parent) { // Spinner if (convertView == null) { LayoutInflater inflater = LayoutInflater.from(mContext); convertView = inflater.inflate(android.R.layout.simple_spinner_item, parent, false); // convertView.setBackgroundDrawable(getResources().getDrawable(R.drawable.nav_icon_more)); } // text1SpinnerTextView TextView tv = (TextView) convertView.findViewById(android.R.id.text1); // ImageView iv = (ImageView) convertView.findViewById(android.R.id.icon); // iv.setBackgroundDrawable(getResources().getDrawable(R.drawable.nav_icon_more)); tv.setText(mStringArray[position]); tv.setTextColor(getResources().getColor(R.color.white)); return convertView; } } /** * Fragment that appears in the "content_frame", shows a planet */ }