cleanMachine_android/app/src/main/java/com/sunzee/base/BaseApplication.java

package com.sunzee.base;

import android.app.Application;
import android.content.Context;
import android.content.Intent;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Point;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.view.Display;
import android.view.WindowManager;

import com.hboxs.serialport.SerialPortDevice;
import com.hboxs.serialport.SerialPortManager;
import com.orhanobut.hawk.Hawk;
import com.sunzee.db.DaoMaster;
import com.sunzee.db.DaoSession;
import com.sunzee.model.Heartbeat;
import com.sunzee.model.domain.Name;
import com.sunzee.service.MyService;
import com.sunzee.utils.FileUtil;
import com.sunzee.utils.SharedPreferencesUtils;

/**
 * Created by MinKin.
 */
public class BaseApplication extends Application {

    public static Context mContext;
    public static BaseApplication instances;
    private DaoMaster.DevOpenHelper mHelper;
    private SQLiteDatabase db;
    private DaoMaster mDaoMaster;
    private DaoSession mDaoSession;

    public static int mRealSizeWidth;//手机屏幕真实宽度
    public static int mRealSizeHeight;//手机屏幕真实高度
    private static final String TAG = "BaseApplication";

    @Override
    public void onCreate() {
        super.onCreate();
        mContext = this;
        instances = this;
        Hawk.init(this).build();
        Heartbeat.deviceId = FileUtil.getDeviceId();
        Heartbeat.managerId = (String) SharedPreferencesUtils.getParam(Name.SYSTEM_ID, "");
        SerialPortDevice device = new SerialPortDevice("/dev/ttyS2", "9600");
        SerialPortManager.getInstance().open(device);
        startMyService();
        firstHeartbeat();
        setDatabase();
        getScreenWidthHeight();
    }

    //获取屏幕高和宽:不包含虚拟按键部分的高和宽。
    public void getScreenWidthHeight() {
        WindowManager windowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
        Display display = windowManager.getDefaultDisplay();
        Point outPoint = new Point();
        if (Build.VERSION.SDK_INT >= 19) {
            // 可能有虚拟按键的情况
            display.getRealSize(outPoint);
        } else {
            // 不可能有虚拟按键
            display.getSize(outPoint);
        }
        mRealSizeHeight = outPoint.y;
        mRealSizeWidth = outPoint.x;
        Log.d(TAG, "GTgetScreenHeight: " + mRealSizeHeight);
        Log.d(TAG, "GTgetScreenWidth: " + mRealSizeWidth);
    }

    /**
     * 首次心跳
     */
    private void firstHeartbeat() {
        Intent intent = new Intent(this, MyService.class);
        Bundle bundle = new Bundle();
        bundle.putInt("first", 4);
        intent.putExtras(bundle);
        startService(intent);
    }

    private void startMyService() {
        Intent intentOne = new Intent(this, MyService.class);
        startService(intentOne);
    }

    public static Context getContext() {
        return mContext;
    }

    //------------------------数据库
    public static BaseApplication getInstances() {
        return instances;
    }

    /**
     * 设置greenDAO
     */
    private void setDatabase() {
        // 通过 DaoMaster 的内部类 DevOpenHelper，你可以得到一个便利的 SQLiteOpenHelper 对象。
        // 可能你已经注意到了，你并不需要去编写「CREATE TABLE」这样的 SQL 语句，因为 greenDAO已经帮你做了。
        // 注意：默认的 DaoMaster.DevOpenHelper 会在数据库升级时，删除所有的表，意味着这将导致数据的丢失。
        // 所以，在正式的项目中，你还应该做一层封装，来实现数据库的安全升级。
        mHelper = new DaoMaster.DevOpenHelper(this, "notes-db", null);
        db = mHelper.getWritableDatabase();
        // 注意：该数据库连接属于 DaoMaster，所以多个 Session 指的是相同的数据库连接。
        mDaoMaster = new DaoMaster(db);
        mDaoSession = mDaoMaster.newSession();
    }

    public DaoSession getDaoSession() {
        return mDaoSession;
    }

}