问题
I am creating an application using JavaFX 8. I change the content of a grid pane dynamically using drag/drop. I wish to iterate GridPane contents per row or per row/col. JavaFX allows adding nodes in a GridPane by specifying the row and column.
gridPane.add(node, col, row);
I would like to read the nodes of a GridPane on the same way, by specifying the row and column.
I would like to have something similar to the below source (the below code is not correct),
for(int row = 0; row < gridPaneHeight; row++) {
for(int col = 0; row < gridPaneWidth; col++) {
Node node = gridPane.get(col, row);
}
}
回答1:
How about
int[][] gridPaneNodes = new int[gridPaneWidth][gridPaneHeight] ;
for (Node child : gridPane.getChildren()) {
Integer column = GridPane.getColumnIndex(child);
Integer row = GridPane.getRowIndex(child);
if (column != null && row != null) {
gridPaneNodes[column][row] = child ;
}
}
(or, you could just keep track of which were placed in which cell when you put them there...)
Then you can do
for (int row = 0; row < gridPaneHeight; row++) {
for(int col = 0; row < gridPaneWidth; col++) {
Node node = gridPaneNodes[column][row] ;
}
}
来源:https://stackoverflow.com/questions/31145884/javafx-iterate-gridpane-nodes-per-row-read-nodes-of-gridpane-per-row