我是 JavaFx 8 的新手，我非常喜欢它。我已经构建了我的 GUI，并且能够让我的所有基本功能按预期运行。现在作为实验，我有一大块代码想在此 GUI 中运行，但我不确定是否应该将它扔到我的(Controller)类中并替换 System.out.println() 与 textArea.setText() 每当我需要打印到文本区域 -> 屏幕时。或将其保留在(模型)中。
这是我想放在程序中的代码...
Quick_SortFXController theSort = new Quick_SortFXController(10);
theSort.generateRandomArray();
System.out.println(Arrays.toString(Quick_SortFX.theArray));
theSort.quickSort(0, 9);
System.out.println(Arrays.toString(Quick_SortFX.theArray));
}
Quick_SortFXController(int newArraySize) {
arraySize = newArraySize;
theArray = new int[arraySize];
generateRandomArray();
}
public void quickSort(int left, int right) {
if (right - left <= 0)
return; // Everything is sorted
else {
// It doesn't matter what the pivot is, but it must
// be a value in the array
int pivot = theArray[right];
System.out.println("Value in right " + theArray[right]
+ " is made the pivot");
System.out.println("left = " + left + " right= " + right
+ " pivot= " + pivot + " sent to be partitioned");
int pivotLocation = partitionArray(left, right, pivot);
System.out.println("Value in left " + theArray[left]
+ " is made the pivot");
quickSort(left, pivotLocation - 1); // Sorts the left side
quickSort(pivotLocation + 1, right);
}
}
public int partitionArray(int left, int right, int pivot) {
int leftPointer = left - 1;
int rightPointer = right;
while (true) {
while (theArray[++leftPointer] < pivot)
;
printHorzArray(leftPointer, rightPointer);
System.out.println(theArray[leftPointer] + " in index "
+ leftPointer + " is bigger than the pivot value " + pivot);
while (rightPointer > 0 && theArray[--rightPointer] > pivot)
;
printHorzArray(leftPointer, rightPointer);
System.out.println(theArray[rightPointer] + " in index "
+ rightPointer + " is smaller than the pivot value "
+ pivot);
printHorzArray(leftPointer, rightPointer);
if (leftPointer >= rightPointer) {
System.out.println("left is >= right so start again");
break;
}
else {
swapValues(leftPointer, rightPointer);
System.out.println(theArray[leftPointer] + " was swapped for "
+ theArray[rightPointer]);
}
}
swapValues(leftPointer, right);
return leftPointer;
}
public void swapValues(int indexOne, int indexTwo) {
int temp = theArray[indexOne];
theArray[indexOne] = theArray[indexTwo];
theArray[indexTwo] = temp;
}
public void generateRandomArray() {
for (int i = 0; i < arraySize; i++) {
// Generate a random array with values between
// 10 and 59
theArray[i] = (int) (Math.random() * 50) + 10;
}
}
static void printHorzArray(int i, int j) {
for (int n = 0; n < 61; n++)
System.out.print("-");
System.out.println();
for (int n = 0; n < arraySize; n++) {
System.out.format("| %2s " + " ", n);
}
System.out.println("|");
for (int n = 0; n < 61; n++)
System.out.print("-");
System.out.println();
for (int n = 0; n < arraySize; n++) {
System.out.print(String.format("| %2s " + " ", theArray[n]));
}
System.out.println("|");
for (int n = 0; n < 61; n++)
System.out.print("-");
System.out.println();
if (i != -1) {
// Number of spaces to put before the F
int spacesBeforeFront = 6 * (i + 1) - 5;
for (int k = 0; k < spacesBeforeFront; k++)
System.out.print(" ");
System.out.print("L" + i);
// Number of spaces to put before the R
int spacesBeforeRear = 5 * (j + 1) - spacesBeforeFront;
for (int l = 0; l < spacesBeforeRear; l++)
System.out.print(" ");
System.out.print("R" + j);
System.out.print("\n");
}
什么是实现这一目标的最佳方式。我只需要看到它完成一次，然后再打开...
谢谢!!!
最佳答案
第三种方法呢？
你可以定义一个 Service它执行 QuickSort 计算(在后台线程中)并在工作完成时告诉您的 Controller 。你的 Controller 只需要用结果更新 View 。因此，您的逻辑与应用程序代码的其余部分分离(如果排序需要很长时间，您可以避免卡住 UI)。
你在教程中有一个例子Concurrency in JavaFx来自甲骨文。负责实例化、给出“成功回调”和开始计算的代码部分应该交给 Controller :
FirstLineService service = new FirstLineService();
service.setUrl("http://google.com");
service.setOnSucceeded(new EventHandler<WorkerStateEvent>() {
@Override
public void handle(WorkerStateEvent t) {
System.out.println("done:" + t.getSource().getValue());
}
});
service.start();
此处服务获取 HTTP 响应的第一行，但您可以用相同的方式定义您自己的。享受 JavaFx。
关于java - 如何围绕我的模型程序包装 javafx 8 GUI，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33043545/