android的Application

package com.zhanwei.lee.application;

import android.app.Application;
import android.content.Context;
import android.content.res.Configuration;
import android.util.Log;

import com.sjl.foreground.Foreground;

/**
 * Created by lizhanwei on 17/6/18.
 */

public class LeeApplication extends Application {
    
    private static Context mContext = null;
    
    private static final String TAG = "LeeApplication";
    Foreground.Listener listener = new Foreground.Listener() {
        @Override
        public void onBecameForeground() {
            Log.d(TAG,"onBecameForground");
        }

        @Override
        public void onBecameBackground() {
            Log.d(TAG,"onBecameBackground");
        }
    };
    @Override
    public void onCreate() {
        super.onCreate();
        Foreground.init(this).addListener(listener);
    }

    @Override
    protected void attachBaseContext(Context base) {
        super.attachBaseContext(base);
        this.mContext = base;
    }

    @Override
    public void onTerminate() {
        super.onTerminate();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
    }

    @Override
    public void onLowMemory() {
        super.onLowMemory();
    }

    @Override
    public void onTrimMemory(int level) {
        super.onTrimMemory(level);
    }

    public static Context getContext() {
        return mContext;
    }
}
package com.zhanwei.lee.applicati