冲刺1

内容:

　　1.确认了用户在MYSQL数据库中的储存结构

　　2.将UI原型中的占位符替换成实体

　　3.完成了公告栏的制作

 

公告栏功能:

　　1.当用户鼠标向左向右滑动时,公告栏的图片也会随着滑向前一张或后一张

　　2.每隔五秒将自动跳转到下一张

 

难点:

　　如何让程序每个五秒执行一段代码

 

程序实现:

　　控制时间

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handler = new Handler() {             @Override             public void handleMessage(Message msg) {                 super.handleMessage(msg);                 if (msg.what == 0) {                     if(index==num-1){                         is.setImageResource(gonggao[0]);                         index=0;                         Log.d("MainActivity", "1");                     }else{                         is.setImageResource(gonggao[index+1]);                         index++;                         Log.d("MainActivity", "2");                     }                     Log.d("MainActivity", "123456");                 }             }         };           new Timer().schedule(new TimerTask() {             @Override             public void run() {                 // (1) 使用handler发送消息                 Message message=new Message();                 message.what=0;                 handler.sendMessage(message);             }         },0,5000);

　　控制手指滑动:

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//触摸监听器.         is.setOnTouchListener(new View.OnTouchListener() {             @Override             public boolean onTouch(View v, MotionEvent event) {                   //判断是否按下                 if(event.getAction()==MotionEvent.ACTION_DOWN)                 {                     touchDownX=event.getX();                     return true;                 }else if(event.getAction()==MotionEvent.ACTION_UP){                     touchUpX=event.getX();                     //从左向右滑动                     if(touchUpX-touchDownX>100){                         index=index==0?gonggao.length-1:index-1;                         /*在这里放滑动的动画.  */                         /**/                         is.setImageResource(gonggao[index]);                     }else if(touchDownX-touchUpX>100){                         index=index==gonggao.length-1?0:index+1;                         /*在这里放滑动的动画.  */                         /**/                         is.setImageResource(gonggao[index]);                       }                     return true;                 }                   return false;             }         });

　　

 

存在的疑问:

　　如何让图片播放平滑滑动的图片?