Android中怎么實現界面刷新操作

本篇文章給大家分享的是有關Android中怎么實現界面刷新操作，小編覺得挺實用的，因此分享給大家學習，希望大家閱讀完這篇文章后可以有所收獲，話不多說，跟著小編一起來看看吧。

利用Handler刷新界面

實例化一個Handler對象，并重寫handleMessage方法調用invalidate()實現界面刷新；而在線程中通過sendMessage發送界面更新消息。

// 在onCreate()中開啟線程        new Thread(new GameThread()).start();、           // 實例化一個handler        Handler myHandler   = new Handler()         {               //接收到消息后處理               public void handleMessage(Message msg)               {                      switch (msg.what)                      {                      case Activity01.REFRESH:                             mGameView.invalidate();        //刷新界面                             break;                      }                      super.handleMessage(msg);               }                           };           class GameThread implements Runnable        {               public void run()               {                      while (!Thread.currentThread().isInterrupted())                      {                             Message message = new Message();                             message.what = Activity01.REFRESH;                             //發送消息                             Activity01.this.myHandler.sendMessage(message);                             try                             {                                    Thread.sleep(100);                             }                             catch (InterruptedException e)                             {                                    Thread.currentThread().interrupt();                             }                      }               }         }

使用postInvalidate()刷新界面

使用postInvalidate則比較簡單，不需要handler，直接在線程中調用postInvalidate即可。

class GameThread implements Runnable       {              public void run()              {                     while (!Thread.currentThread().isInterrupted())                     {                            try                            {                                   Thread.sleep(100);                            }                            catch (InterruptedException e)                            {                                   Thread.currentThread().interrupt();                            }                            //使用postInvalidate可以直接在線程中更新界面                            mGameView.postInvalidate();                     }              }       }

以上就是Android中怎么實現界面刷新操作，小編相信有部分知識點可能是我們日常工作會見到或用到的。希望你能通過這篇文章學到更多知識。更多詳情敬請關注億速云行業資訊頻道。