MainActivity.java

package com.game.Activity;

import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.widget.Toolbar;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import com.game.R;
import com.yalantis.contextmenu.lib.ContextMenuDialogFragment;
import com.yalantis.contextmenu.lib.MenuObject;
import com.yalantis.contextmenu.lib.MenuParams;
import com.yalantis.contextmenu.lib.interfaces.OnMenuItemClickListener;
import com.yalantis.contextmenu.lib.interfaces.OnMenuItemLongClickListener;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends ActionBarActivity implements OnMenuItemClickListener,
        OnMenuItemLongClickListener {

    private MainFragment mainFragment;
    private long firsttime; // 监听两次返回
    private FragmentManager fragmentManager;
    private DialogFragment mMenuDialogFragment;


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

        setContentView(R.layout.activity_main);

        fragmentManager = getSupportFragmentManager();
        initToolbar();
        initMenuFragment();
        mainFragment = new MainFragment();
        addFragment(mainFragment, true, R.id.container);

    }

    @Override
    public void onBackPressed() {
        super.onBackPressed();
        Intent i = new Intent(this, LoginActivity.class);
        startActivity(i);
        finish();
    }


    //初始化menufragment
    private void initMenuFragment() {
        MenuParams menuParams = new MenuParams();
        menuParams.setActionBarSize((int) getResources().getDimension(R.dimen.tool_bar_height));
        menuParams.setMenuObjects(getMenuObjects());
        menuParams.setClosableOutside(false);
        mMenuDialogFragment = ContextMenuDialogFragment.newInstance(menuParams);
    }


    //获取数据
    private List<MenuObject> getMenuObjects() {
        // You can use any [resource, bitmap, drawable, color] as image:
        // item.setResource(...)
        // item.setBitmap(...)
        // item.setDrawable(...)
        // item.setColor(...)
        // You can set image ScaleType:
        // item.setScaleType(ScaleType.FIT_XY)
        // You can use any [resource, drawable, color] as background:
        // item.setBgResource(...)
        // item.setBgDrawable(...)
        // item.setBgColor(...)
        // You can use any [color] as text color:
        // item.setTextColor(...)
        // You can set any [color] as divider color:
        // item.setDividerColor(...)

        List<MenuObject> menuObjects = new ArrayList<>();

        MenuObject close = new MenuObject();
        close.setResource(R.drawable.icn_close);

        MenuObject send = new MenuObject(getResources().getString(R.string.menu_tutorial));
        send.setResource(R.drawable.icn_1);

        MenuObject like = new MenuObject(getResources().getString(R.string.menu_restart));
        Bitmap b = BitmapFactory.decodeResource(getResources(), R.drawable.icn_2);
        like.setBitmap(b);

        MenuObject addFr = new MenuObject(getResources().getString(R.string.menu_charts));
        BitmapDrawable bd = new BitmapDrawable(getResources(),
                BitmapFactory.decodeResource(getResources(), R.drawable.icn_3));
        addFr.setDrawable(bd);

        MenuObject addFav = new MenuObject(getResources().getString(R.string.menu_info));
        addFav.setResource(R.drawable.icn_4);

        MenuObject block = new MenuObject(getResources().getString(R.string.menu_exit));
        block.setResource(R.drawable.icn_5);

        menuObjects.add(close);
        menuObjects.add(send);
        menuObjects.add(like);
        menuObjects.add(addFr);
        menuObjects.add(addFav);
        menuObjects.add(block);
        return menuObjects;
    }

    //初始化toolbar
    private void initToolbar() {
        Toolbar mToolbar = (Toolbar) findViewById(R.id.toolbar);
        TextView mToolBarTextView = (TextView) findViewById(R.id.text_view_toolbar_title);
        setSupportActionBar(mToolbar);
        getSupportActionBar().setHomeButtonEnabled(true);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setDisplayShowTitleEnabled(false);
        mToolbar.setNavigationIcon(R.drawable.btn_back);
        mToolbar.setNavigationOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                onBackPressed();
            }
        });
        mToolBarTextView.setText("2048");
    }

    protected void addFragment(Fragment fragment, boolean addToBackStack, int containerId) {
        invalidateOptionsMenu();
        String backStackName = fragment.getClass().getName();
        boolean fragmentPopped = fragmentManager.popBackStackImmediate(backStackName, 0);
        if (!fragmentPopped) {
            FragmentTransaction transaction = fragmentManager.beginTransaction();
            transaction.add(containerId, fragment, backStackName)
                    .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
            if (addToBackStack)
                transaction.addToBackStack(backStackName);
            transaction.commit();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(final Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.context_menu:
                if (fragmentManager.findFragmentByTag(ContextMenuDialogFragment.TAG) == null) {
                    mMenuDialogFragment.show(fragmentManager, ContextMenuDialogFragment.TAG);
                }
                break;
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onMenuItemClick(View clickedView, int position) {
        Intent i;
        switch (position) {

            //取消
            case 0:
                break;

            //查看教程
            case 1:
                i = new Intent(this, WebHelpActivity.class);
                startActivity(i);
                break;

            //重新开始
            case 2:
                mainFragment.startGame();
                break;

            //我要看榜
            case 3:
                i = new Intent(this, ChartsActivity.class);
                startActivity(i);
                break;

            //关于作者
            case 4:
                i = new Intent(this, InfoActivity.class);
                startActivity(i);
                break;

            //退出游戏
            case 5:
                finish();
                break;
            default:
                break;
        }
    }

    @Override
    public void onMenuItemLongClick(View clickedView, int position) {
        Toast.makeText(this, "Long clicked on position: " + position, Toast.LENGTH_SHORT).show();
    }

    //点击两次退出
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            if (System.currentTimeMillis() - firsttime < 3000) {
                finish();
                return true;
            } else {
                firsttime = System.currentTimeMillis();
                Toast.makeText(this, "再点一次退出", Toast.LENGTH_SHORT).show();
                return false;
            }
        }
        return false;
    }
}