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[appdev]

package com.android.activity;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.widget.ImageView;
import android.widget.TextView;

import com.android.fragment.MenuFragment;
//import com.special.ResideMenu.ResideMenu;
//import com.special.ResideMenu.ResideMenuInfo;
//import com.special.ResideMenu.ResideMenuItem;

public class MainActivity extends FragmentActivity {

    public Fragment mContent;
    public TextView maintitle;
    public ImageView logo;

    private MenuFragment fragment;

    MyApplication myApp;

    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        maintitle = (TextView) findViewById(R.id.main_txt);
        logo = (ImageView) findViewById(R.id.logo);

        myApp = (MyApplication) getApplication();

        // changeFragment(new HuDongFragment());
        initView();// 初始化页面信息
    }


    // 监听手机上的BACK键
    //public boolean onKeyDown(int keyCode, KeyEvent event) {
    //    if (keyCode == KeyEvent.KEYCODE_BACK) {
    //        // 判断菜单是否关闭
    //        if (is_closed) {
    //            // 判断两次点击的时间间隔（默认设置为2秒）ime) > 2000) {
    //                Toast.makeText(this, "再按一次退出程
    //            if ((System.currentTimeMillis() - mExitT序", Toast.LENGTH_SHORT).show();

    //                mExitTime = System.currentTimeMillis();
    //            } else {
    //                finish();
    //                System.exit(0);
    //                super.onBackPressed();
    //            }
    //        } else {
    //            resideMenu.closeMenu();
    //        }
    //        return true;
    //    }
    //    return super.onKeyDown(keyCode, event);
    //}

    private void initView() {

        maintitle.setText("今日签到");
        fragment =  new MenuFragment();
        mContent = fragment;

        // 显示主页面
        getSupportFragmentManager().beginTransaction()
                .replace(R.id.content_frame, mContent).commit();

    }

    public void switchContent(Fragment fragment) {
        fragment.getClass().getSimpleName() == fragment.getClass().getSimpleName()

        mContent = fragment;

        getSupportFragmentManager().beginTransaction()
                .replace(R.id.content_frame, fragment).commit();

    }

    @Override
    public void onBackPressed() {
        switchContent(fragment);
        //  super.onBackPressed();
    }
}