在Corona中，出现黑色圆圈而非图片。

我是 Corona 和编码的新手，目前正在玩弄应用程序重新设计。我尝试将自己的图像添加到游戏中，但此时选择的图像被黑色圆圈代替，而游戏中的其他所有内容似乎都很好。这是代码之前的样子：

Ball_Player = display.newCircle( PlayerX, PlayerY, (25 * ((GameScreen.width  * (_H / 1300))) / 600)) --(9 +((7 - PlayerSpeed) * 5 ))
Ball_Player:setFillColor(1, 1, 1, 1);
Ball_Player.alpha = 0;

Ball_Player1 = display.newCircle( PlayerX, PlayerY, (25 * ((GameScreen.width * (_H / 1300))) / 700)) --(9 +((7 - PlayerSpeed) * 5 ))
Ball_Player1:setFillColor(1, 1, 1, 1);
Ball_Player1.alpha = 0;

Ball_Player2 = display.newCircle( Player2X, Player2Y, (25 * ((GameScreen.width * (_H / 1300))) / 700)) --(9 +((7 - PlayerSpeed) * 5 ))
Ball_Player2:setFillColor(1, 1, 1, 1);
Ball_Player2.alpha = 0;

Ball_Enemy1 = display.newCircle( PlayerX, PlayerY, (35 * ((GameScreen.width * (_H / 1300))) / 600));
Ball_Enemy1:setFillColor(0.8, 0.2, 0.2);
Ball_Enemy1.alpha = 0;

Ball_Enemy2 = display.newCircle( PlayerX, PlayerY, (35 * ((GameScreen.width * (_H / 1300))) / 600));
Ball_Enemy2:setFillColor(0.8, 0.2, 0.2);
Ball_Enemy2.alpha = 0;

Ball_Enemy3 = display.newCircle( PlayerX, PlayerY, (35 * ((GameScreen.width * (_H / 1300))) / 600));
Ball_Enemy3:setFillColor(0.8, 0.2, 0.2);
Ball_Enemy3.alpha = 0;

Ball_Enemy4 = display.newCircle( PlayerX, PlayerY, (35 * ((GameScreen.width * (_H / 1300))) / 600));
Ball_Enemy4:setFillColor(0.8, 0.2, 0.2);
Ball_Enemy4.alpha = 0;

Ball_Enemy5 = display.newCircle( PlayerX, PlayerY, (35 * ((GameScreen.width * (_H / 1300))) / 600));
Ball_Enemy5:setFillColor(0.8, 0.2, 0.2);
Ball_Enemy5.alpha = 0;

以下是我所做的更改。此时，我只是从网上的教程中拼凑代码，因此欢迎任何和所有指导！谢谢！

Ball_Player = display.newCircle(0, 0, 31.5)
Ball_Player.x = display.contentCenterX
Ball_Player.y = display.contentCenterY
Ball_Player.fill = {"images/playerearth.png"}

Ball_Player1 = display.newCircle(0, 0, 31.5)
Ball_Player1.x = display.contentCenterX
Ball_Player1.y = display.contentCenterY
Ball_Player1.fill = {"images/playerearth.png"}

Ball_Player2 = display.newCircle(0, 0, 31.5)
Ball_Player2.x = display.contentCenterX
Ball_Player2.x = display.contentCenterY
Ball_Player2.fill = {"images/playermoon.png"}

Ball_Enemy1 = display.newCircle(0, 0, 31.5)
Ball_Enemy1.x = display.contentCenterX
Ball_Enemy1.y = display.contentCenterY
Ball_Enemy1.fill = {"images/enemy1.png"}

Ball_Enemy2 = display.newCircle(0, 0, 31.5)
Ball_Enemy2.x = display.contentCenterX
Ball_Enemy2.y = display.contentCenterY
Ball_Enemy2.fill = {"images/enemy2.png"}

Ball_Enemy3 = display.newCircle(0, 0, 31.5)
Ball_Enemy3.x = display.contentCenterX
Ball_Enemy3.y = display.contentCenterY
Ball_Enemy3.fill = {"images/enemy3.png"}

Ball_Enemy4 = display.newCircle(0, 0, 31.5)
Ball_Enemy4.x = display.contentCenterX
Ball_Enemy4.y = display.contentCenterY
Ball_Enemy4.fill = {"images/enemy4.png"}

Ball_Enemy5 = display.newCircle(0, 0, 31.5)
Ball_Enemy5.x = display.contentCenterX
Ball_Enemy5.y = display.contentCenterY
Ball_Enemy5.fill = {"images/enemy5.png"}