com.flan.stock.activity.HomeActivity.java Source code

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Here is the source code for com.flan.stock.activity.HomeActivity.java

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/*
 *    Flan.Zeng 2011-2016   http://git.oschina.net/signup?inviter=flan
 *
 * 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.flan.stock.activity;

import java.util.ArrayList;
import java.util.Timer;
import java.util.TimerTask;

import com.flan.stock.R;
import com.flan.stock.adapter.NavigatorFragmentAdapter;
import com.flan.stock.fragment.FragmentNavigatorA;
import com.flan.stock.fragment.FragmentNavigatorB;
import com.flan.stock.service.StockService;
import com.flan.stock.view.FooterMenuView;

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;

/**
 * app?
 * @author flan
 * @date   2015105
 */
public class HomeActivity extends FragmentActivity {

    private boolean isExit = false;
    private ViewPager viewPager;
    private FooterMenuView menu;
    private ImageView[] dots;
    //????
    private int navCurrentIndex = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        this.setContentView(R.layout.activity_home);
        viewPager = (ViewPager) this.findViewById(R.id.vp_fragment);

        ArrayList<Fragment> fragmentList = new ArrayList<>();
        FragmentNavigatorA fragmenta = new FragmentNavigatorA(this);
        FragmentNavigatorB fragmentb = new FragmentNavigatorB(this);
        fragmentList.add(fragmenta);
        fragmentList.add(fragmentb);

        viewPager.setAdapter(new NavigatorFragmentAdapter(getSupportFragmentManager(), fragmentList));
        viewPager.addOnPageChangeListener(new NavigatorPageChangeListener());

        initDot();

        //???
        menu = (FooterMenuView) this.findViewById(R.id.footer_menu);
        menu.setCurrentMenu(R.id.menu_home);
        menu.setOnTouchListener(menu.new MenuOnTouchListener());

    }

    @Override
    protected void onRestart() {
        super.onRestart();
        menu.setCurrentMenu(R.id.menu_home);
    }

    class NavigatorPageChangeListener implements OnPageChangeListener {

        @Override
        public void onPageScrollStateChanged(int arg0) {
        }

        @Override
        public void onPageScrolled(int arg0, float arg1, int arg2) {
        }

        @Override
        public void onPageSelected(int position) {
            setCurrentDot(position);
        }

    }

    //??
    private void initDot() {

        LinearLayout ll = (LinearLayout) this.findViewById(R.id.lay_dot);

        int size = viewPager.getAdapter().getCount();
        dots = new ImageView[size];

        for (int i = 0; i < dots.length; i++) {

            dots[i] = (ImageView) ll.getChildAt(i);
            dots[i].setTag(i);
            //dots[i].setEnabled(true);
            //?
            dots[i].setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {

                    int position = (int) v.getTag(); //??

                    setCurrentDot(position);
                    setCurrentView(position);
                }
            });
        }

        dots[navCurrentIndex].setEnabled(false); //??
    }

    //??
    private void setCurrentDot(int position) {

        if (position < 0 || position >= viewPager.getAdapter().getCount() || position == navCurrentIndex) {
            return;
        }

        dots[position].setEnabled(false);
        dots[navCurrentIndex].setEnabled(true);

        navCurrentIndex = position;
    }

    //?????
    private void setCurrentView(int position) {

        if (position < 0 || position > viewPager.getAdapter().getCount()) {
            return;
        }

        viewPager.setCurrentItem(position);
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {

        if (keyCode == KeyEvent.KEYCODE_BACK) {
            exitBy2Click();
        }
        return false;
    }

    /**
     * ??
     */
    private void exitBy2Click() {

        if (isExit == false) {
            isExit = true;
            Toast.makeText(this, "?", Toast.LENGTH_SHORT).show();
            new Timer().schedule(new TimerTask() {
                @Override
                public void run() {

                }
            }, 2000);// 2???
        } else {

            //???
            this.stopService(new Intent(this, StockService.class));
            this.finish();
            System.exit(0);
        }
    }

}