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package com.acompagno.example; /*from www. j a v a 2s . c o m*/ import android.content.res.Configuration; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.view.GravityCompat; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.ActionBarActivity; import android.support.v7.app.ActionBarDrawerToggle; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ListView; import com.acompagno.example.fragments.Example1Fragment; import com.acompagno.example.fragments.Example2Fragment; import com.acompagno.example.fragments.Example3Fragment; import com.acompagno.example.fragments.Example4Fragment; import com.acompagno.example.fragments.Example5Fragment; import com.acompagno.example.fragments.MainPageFragment; public class MainActivity extends ActionBarActivity { private String[] mDrawerTitles; private DrawerLayout mDrawerLayout; private ListView mDrawerList; private CharSequence mTitle; private ActionBarDrawerToggle mDrawerToggle; private CharSequence mOpenTitle; private CharSequence mFragmentTitle; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // getSupportActionBar().setIcon(R.drawable.ic_launcher_trans); //Set the fragment that will first appear in content frame this.getSupportFragmentManager().beginTransaction().replace(R.id.content_frame, new MainPageFragment()).commit(); //Set mFragmentTitle (this value is used later on, it keeps track of what the ) mFragmentTitle = getResources().getString(R.string.app_name); //set the open title. this will be the title whenever the drawer is opened mOpenTitle = "Choose An Example"; //Drawer layout setup //This array holds the text for each element in the drawer mDrawerTitles = new String[]{"Home", "Example 1", "Example 2", "Example 3", "Example 4", "Example 5"}; //get the drawer layout from the xml file mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); //get thelistview from the xml file mDrawerList = (ListView) findViewById(R.id.left_drawer); // Set the adapter for the list view. the adapter sets whats going to be in the listview mDrawerList.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_list_item, mDrawerTitles)); // Set the list's click listener. the method for this is defined later on mDrawerList.setOnItemClickListener(new DrawerItemClickListener()); mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.drawer_open, R.string.drawer_close); mDrawerLayout.setDrawerListener(mDrawerToggle); getSupportActionBar().setDisplayHomeAsUpEnabled(true); getSupportActionBar().setHomeButtonEnabled(true); } @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); 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); } /** * Swaps fragments in the main content view */ private void selectItem(int position) { //chooses which fragment will be pushed to content_frame and switches it final Fragment newFragment; switch (position) { case 1: newFragment = new Example1Fragment(); mFragmentTitle = mDrawerTitles[position]; break; case 2: newFragment = new Example2Fragment(); mFragmentTitle = mDrawerTitles[position]; break; case 3: newFragment = new Example3Fragment(); mFragmentTitle = mDrawerTitles[position]; break; case 4: newFragment = new Example4Fragment(); mFragmentTitle = mDrawerTitles[position]; break; case 5: newFragment = new Example5Fragment(); mFragmentTitle = mDrawerTitles[position]; break; default: newFragment = new MainPageFragment(); mFragmentTitle = getResources().getString(R.string.app_name); } this.getSupportFragmentManager() .beginTransaction() .replace(R.id.content_frame, newFragment) .addToBackStack("hi") .commit(); // Highlight the selected item, update the title, and close the drawer mDrawerList.setItemChecked(position, true); //Sets the title in the actionbar if (position == 0) { setTitle(getResources().getString(R.string.app_name)); } else { setTitle(mDrawerTitles[position]); } mDrawerLayout.closeDrawer(mDrawerList); } //Drawer layout methods @Override public void setTitle(CharSequence title) { mTitle = title; getSupportActionBar().setTitle(mTitle); } private class DrawerItemClickListener implements ListView.OnItemClickListener { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { selectItem(position); } } //Override what happens whent the back button is pressed @Override public void onBackPressed() { if (this.mDrawerLayout.isDrawerOpen(GravityCompat.START)) { mDrawerLayout.closeDrawers(); } else if (this.getSupportFragmentManager().getBackStackEntryCount() > 0) { this.getSupportFragmentManager().popBackStack(); } else { // make sure our application gets pushed back to the application stack this.moveTaskToBack(true); super.onBackPressed(); } } //allows us to change the title on the action bar from a fragment public void changeTitleFromFragment(CharSequence title) { mFragmentTitle = title; setTitle(title); } }