MyApplication.java

package com.yokmama.learn10.chapter05.lesson25;

import android.app.Application;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Message;
import android.util.Log;

import java.util.Random;

/**
 * Created by yokmama on 15/04/23.
 */
public class MyApplication extends Application{
    private static final String TAG = MyApplication.class.getSimpleName();

    private HandlerThread mHandlerThread;

    private Handler mHandler;
    private int mCounter;
    private Random mRand = new Random();


    @Override
    public void onCreate() {
        super.onCreate();

        //Handlerを生成
        mHandlerThread = new HandlerThread("myLooper");
        mHandlerThread.start();
        mHandler = new Handler(mHandlerThread.getLooper());
    }


    public void countUp() {
        mHandler.post(new Task(mCounter++));
    }

    private class Task implements Runnable {

        private int mIndex;

        public Task(int index) {
            mIndex = index;
        }

        @Override
        public void run() {
            try {
                //スレッドをランダムにスリープ
                int sleepTime = mRand.nextInt(5) * 1000;
                Log.d(TAG, "sleep " + sleepTime);
                Thread.sleep(sleepTime);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            Log.d(TAG, "My Index is " + mIndex);
        }
    }
}