android - 如何在Android的Canvas onDraw()中在位图上设置动画？

谁能帮我在Canvas中的两个位图上设置动画？
我有两个位图"bitmap1"和"bitmap2"。

我想显示"bitmap1"，然后显示"bitmap2"，间隔为500ms，然后再次显示bitmap1，依此类推，继续...
我想要任何方法执行此操作，但不使用Thread.sleep(500);

提前致谢...

最佳答案

在线程中尝试以下操作：

long lastBitmapSwitchMillis = System.currentTimeMillis();   //Saves system time from last bitmap switch
int currentBitmap = 1;   //1 = bitmap1, 2 = bitmap2
int bitmapInterval = 500;   //Interval between bitmap switches

while (running) {

     //Switches bitmap after interval
     if (System.currentTimeMillis() >= lastBitmapSwitchMillis + bitmapInterval) {
          lastBitmapSwitchMillis = System.currentTimeMillis();   //Save current time of bitmap switch
          if (currentBitmap == 1) {
               currentBitmap = 2;
          }
          else if (currentBitmap == 2) {
               currentBitmap = 1;
          }
     }

     //Render appropriate bitmap
     if (currentBitmap = 1) {
          canvas.drawBitmap(bitmap1, x, y, paint);   //x and y are bitmap's location,
     }
     else if (currentBitmap = 2) {
          canvas.drawBitmap(bitmap2, x, y, paint);   //x and y are bitmap's location
     }
}