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Question

问题：我想在在Handler中 用一个Intent来跳转另一个activity 可是跳过去后线程还在跑 我想用removeCallbacks来关闭  但我不知道放在那里  下面是代码红色部分package com.haven.skilltest.demo;import java.util.ArrayList;
import java.util.List;import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.DisplayMetrics;
import android.util.Log;import android.view.Gravity;
import android.view.Window;
import android.view.WindowManager;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;import android.widget.ImageView;
import android.widget.LinearLayout;public class Main extends Activity {
        private Animation anm;
        private int marginsTop;
        public List<ImageView> images;
        public LinearLayout ll;
    @Override
    public void onCreate(Bundle savedInstanceState) {
      
        super.onCreate(savedInstanceState);                getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);                requestWindowFeature(Window.FEATURE_NO_TITLE);                DisplayMetrics dm = this.getResources().getDisplayMetrics();                int height = dm.heightPixels;
                marginsTop = height - 100;
                anm = AnimationUtils.loadAnimation(this, R.anim.myanim);
                ll = new LinearLayout(this);
                ll.setBackgroundResource(R.drawable.background);                images = new ArrayList<ImageView>();
                initImage(ll);
                playAnimation();
                setContentView(ll);
                //finish();
    }
    private void playAnimation(){     
new Thread(){
            @Override
            public void run()
            {
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                int runcount=0;
                while(true)
                {
                    if(runcount<2)
                    {
                        for(int i=0;i<=6;i++)
                        {
                            handler.sendEmptyMessage(i);
                            try {
                                Thread.sleep(400);
                            } catch (InterruptedException e) {
                                e.printStackTrace();
                            }
                        }
                        runcount++;
                    }else
                    {
                        handler.sendEmptyMessage(99);
                        runcount=0;
                    }
                                    }            }
                    }.start();
    }
   
               Handler handler=new Handler(){                            @Override
                            public void handleMessage(Message msg) {                                 
                                    switch(msg.what)
                                    {
                                    case 0:
                                            images.get(0).setImageDrawable(Main.this.getResources().getDrawable(R.drawable.l));
                                            images.get(0).startAnimation(anm);
                                           
                                            break;
                                    case 1:
                                            images.get(1).setImageDrawable(Main.this.getResources().getDrawable(R.drawable.o));
                                            images.get(1).startAnimation(anm);
                                            break;
                                    case 2:
                                            images.get(2).setImageDrawable(Main.this.getResources().getDrawable(R.drawable.a));
                                            images.get(2).startAnimation(anm);
                                            break;
                                    case 3:
                                            images.get(3).setImageDrawable(Main.this.getResources().getDrawable(R.drawable.d));
                                            images.get(3).startAnimation(anm);
                                            break;
                                    case 4:
                                            images.get(4).setImageDrawable(Main.this.getResources().getDrawable(R.drawable.i));
                                            images.get(4).startAnimation(anm);
                                            break;
                                    case 5:
                                            images.get(5).setImageDrawable(Main.this.getResources().getDrawable(R.drawable.n));
                                            images.get(5).setAnimation(anm);
                                            break;
                                    case 6:
                                            images.get(6).setImageDrawable(Main.this.getResources().getDrawable(R.drawable.g));
                                            images.get(6).setAnimation(anm);
                                           
                                
                                            break;
                                    case 99:
                                            //clearImage();
                                           
                                            Intent intent=new Intent();
                                            intent.setClass(Main.this, index.class);//LoginActivity是要跳转的Activity
                                            startActivity(intent);
                                            finish();
                                            //handler.removeCallbacks(handler);
                                            break;
                        
                                           
                                    }
                                    //finish();
                                    //handler.removeCallbacks(null);
                            }
                           
                    };
                   
    private void clearImage()
    {
            for(ImageView image:images)
            {
                    image.setImageDrawable(null);
                    image.destroyDrawingCache();
            }
    }
    private void initImage(LinearLayout layout) {
           
            layout.setGravity(Gravity.CENTER_HORIZONTAL);
                LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(40, 40);
                param.setMargins(30, marginsTop, 0, 0);
               
                LinearLayout.LayoutParams param2 = new LinearLayout.LayoutParams(40, 40);
                param2.setMargins(-5, marginsTop, 0, 0);                ImageView l = new ImageView(this);
                l.setLayoutParams(param);
                layout.addView(l);
                images.add(l);                ImageView o = new ImageView(this);
                o.setLayoutParams(param2);
                layout.addView(o);
                images.add(o);
               
               
                ImageView a = new ImageView(this);
                a.setLayoutParams(param2);
                layout.addView(a);
                images.add(a);
               
                ImageView d = new ImageView(this);
                d.setLayoutParams(param2);
                layout.addView(d);
                images.add(d);
               
                ImageView i = new ImageView(this);
                i.setLayoutParams(param2);
                layout.addView(i);
                images.add(i);
               
                ImageView n = new ImageView(this);
                n.setLayoutParams(param2);
                layout.addView(n);
                images.add(n);
               
                ImageView g = new ImageView(this);
                g.setLayoutParams(param2);
                layout.addView(g);
                images.add(g);
                //finish();
        }
}

Answer 1

- - 你的代码我是不看了。
但是这种情况一般是弄个线程开关。
成员变量：boolean flag = true;
线程run方法：
run(){
   while(flag){
       //线程代码
   }
}
在onDestory或别的周期函数里flag = false;结束线程。