package com.example.mm.helloworld;

import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.TranslateAnimation;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {
 

    private  Button button_up = null;
    private int jj=30;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        TranslateAnimation animation=new TranslateAnimation(-100,100,0,0);
        animation.setDuration(2000
 
);
        animation.setRepeatCount(1000);
        Button button_down = (Button) findViewById(R.id.button_down);
        button_down.setAnimation(animation);
        button_up=(Button) findViewById(R.id.button_up);
        button_up.setOnClickListener(new View.OnClickListener() {
            @Override
            public
 
 void onClick(final View v) {
                new DownloadImageTask().execute();
            }
        });
    }

    private class DownloadImageTask extends   AsyncTask<String,Void,Integer>    //AsyncTask
    {
        protected Integer doInBackground(String... urls)  //跟UI無關的耗時操作，寫線上程裡面
        {
            try {
                Thread.sleep(5000);
            }
            catch (InterruptedException e)
            {
                e.printStackTrace();
            }
            int sum=10;
            return  sum;
        }

        protected  void  onPostExecute(Integer sum)//跟UI元件相關的操作寫在post裡面
        {
            button_up.setText(""+sum);
        }
    }