Question

我如何写＆＃34;如果贴纸1被放置在阵列中＆＃34;那么......我的目标是将贴纸放置并作为带坐标的名称输入到数组中，然后保存到save.txt文件中。从那里，我可以点击一个加载按钮，它将加载贴纸并将其放在确切的坐标处。

if (hatSoundPlay){ //if hatSoundPlay is true
hatsound.play(); //and a hatsound will play
sticker sticker1 = new sticker();//creates a new sticker1
sticker1.arraysticker(hatPicture, "hat.png", clickX, clickY);//places sticker
image ++;//increments image by 1
arraysticker[image] = sticker1;//puts sticker 1 into the array

然后是保存代码。

else if (savePicture.isPointInElement(clickX, clickY)){
FileWriter fw = new FileWriter("save.txt");
for (int i = 0; i < arraysticker.length; i++);
    if (sticker1.images[images].isShowing){
    //I want the iff statement ^^ to say if sticker if placed in the array
    //fw.write name and coords into save.txt    
    }
}

Answer 1

你应该有班级Stricker，它应该是这样的：

public class Sticker(){
  private String name;
  private int X;
  private int Y;

  //There You should place Getters and Setters to variables name,X and Y
  //... and your method named 'arraysticker(Object, Image, Integer, Integer)'
}

...下一步是创建正确类型的列表ArrayList<Sticker> list = new ArrayList<>();

我会这样做：

if(hatSoundPlay){ 
   hatsound.play(); 
   Sticker sticker1 = new Sticker();

   sticker1.arraysticker(hatPicture, "hat.png", clickX, clickY);

   image ++;
   list[image] = sticker1;
}

最后你的保存代码应该是：

else if (savePicture.isPointInElement(clickX, clickY)){
   FileWriter fw = new FileWriter("save.txt");
   for(int i = 0; i < list.length; i++){
       if(list[i]!=null){ //if object exist, do...
         String name;
         int x,y;

         name = list.getName();
         x = list.getX();
         y = list.getY();

         fw.write(name + " " + x + " " + y + "\n"); //write all elements to file separated with space and symbol of new line
       }
    }
  fw.close(); //necessary to close connection with file
}

要解决这个问题，我需要其他代码，因为我没有关于你的方法和其他数组的信息，如images

Answer 2

至于你需要保存和恢复对象，我建议你使用像Jackson库这样的现成解决方案。这简化了逻辑，您只需使用注释即可控制保存和恢复的内容。

有很多例子。所以你得到你的类，用注释标记属性，那就是。 Jackson lib将为您做一切。看一下本教程：http://www.journaldev.com/2324/jackson-json-processing-api-in-java-example-tutorial

如何将图像名称及其坐标写入save.txt文件？

2 个答案: