SearchActivity.java

/* A simple Activity for the Search screen
 * Sets up the PageAdapter for the Search screen.
 * Most of the work seen in the Search screen is actually the fragments,
 * not this class. This class is just a simple parent Activity for the fragments.
 */

package com.databases.example.features.search;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;

import com.databases.example.R;
import com.databases.example.app.BaseActivity;
import com.databases.example.features.checkbook.accounts.AccountsFragment;
import com.databases.example.features.checkbook.transactions.TransactionsFragment;
import com.databases.example.utils.Constants;

import java.util.ArrayList;

public class SearchActivity extends BaseActivity {
    public static final String BOOLEAN_SEARCH_KEY = "boolSearch";
    public static final String QUERY_KEY = "query";


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        handleIntent(getIntent());
    }

    @Override
    public void onNewIntent(Intent intent) {
        setIntent(intent);
        handleIntent(intent);
    }

    private void handleIntent(Intent intent) {
        String query = intent.getStringExtra(QUERY_KEY);
        setTitle("Search <" + query + ">");
        makeView();
    }

    //Method that handles setting up the Tabs
    private void makeView() {
        setContentView(R.layout.search);

        ViewPager mViewPager = (ViewPager) findViewById(R.id.search_pager);
        mViewPager.setOffscreenPageLimit(2);

        MyPagerAdapter mTabsAdapter = new MyPagerAdapter(this, mViewPager);

        mTabsAdapter.addTab(AccountsFragment.class, null);
        mTabsAdapter.addTab(TransactionsFragment.class, null);
        mTabsAdapter.notifyDataSetChanged();
    }

    @Override
    public Constants.ActivityTag setDrawerTag() {
        return Constants.ActivityTag.SEARCH;
    }

    public static class MyPagerAdapter extends FragmentStatePagerAdapter
            implements ViewPager.OnPageChangeListener {

        private final Context mContext;
        private final ViewPager mPager;
        private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();

        static final class TabInfo {
            private final Class<?> clss;
            private final Bundle args;

            TabInfo(Class<?> _class, Bundle _args) {
                clss = _class;
                args = _args;
            }
        }

        public MyPagerAdapter(AppCompatActivity activity, ViewPager pager) {

            super(activity.getSupportFragmentManager());
            mContext = activity;
            mPager = pager;
            mPager.setAdapter(this);
            mPager.setOnPageChangeListener(this);
        }

        public void addTab(Class<?> clss, Bundle args) {
            TabInfo info = new TabInfo(clss, args);
            mTabs.add(info);
            notifyDataSetChanged();
        }

        //Removes tab at certain position (zero-based)
        public void removeTab(ViewPager pager, int position, MyPagerAdapter adapter) {
            mTabs.remove(position);
            adapter.notifyDataSetChanged();
        }

        public int getCount() {
            //One for Account tab, One for TransactionsFragment tab
            //return 2;
            return mTabs.size();
        }

        @Override
        public void destroyItem(View arg0, int arg1, Object arg2) {
            ((ViewPager) arg0).removeView((View) arg2);
        }

        @Override
        public Parcelable saveState() {
            return null;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            switch (position) {
                case 0:
                    return "AccountsFragment";

                case 1:
                    return "TransactionsFragment";

                default:
                    return "Unknown Page!";
            }

        }

        @Override
        public void onPageScrollStateChanged(int arg0) {
            // TODO Auto-generated method stub
        }

        @Override
        public void onPageScrolled(int arg0, float arg1, int arg2) {
            // TODO Auto-generated method stub
        }

        @Override
        public void onPageSelected(int arg0) {
            // TODO Auto-generated method stub
        }

        @Override
        public Fragment getItem(int position) {
            TabInfo info = mTabs.get(position);
            return Fragment.instantiate(mContext, info.clss.getName(), info.args);
        }

        //Allows for multiple pages
        @Override
        public float getPageWidth(int position) {
            //To have two pages, return .5
            return (1f);
        }

    }

    //For Menu
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.search_menu, menu);
        //SearchWidget searchWidget = new SearchWidget(this, menu.findItem(R.id.search_menu_search).getActionView());
        return true;
    }
}