我有一个 JTable 和它的 TableModel,它运行良好,但我现在想要做的是获取它的选定单元格。我想过做类似的事情:
int rows = this.getTable().getRowCount();
int columns = this.getTable().getColumnCount();
for(int i = 0 ; i < rows ; i++)
{
for(int j = 0 ; j < columns ; j++)
{
if(table.getCell(i,j).isSelected() //...
}
}
但当然,这样的事情是不存在的。我应该怎么做?
最佳答案
在 JTable 中,你有
JTable.getSelectedRow()
和
JTable.getSelectedColumn()
您可以尝试将这两种方法与 MouseListener 和 KeyListener 结合使用。
使用 KeyListener 检查用户是否按下了 CTRL 键,这意味着用户正在选择单元格,然后使用鼠标监听器,每次单击时,您可能会将所选单元格存储在 Vector 或 ArrayList 中:
//global variables
JTable theTable = new JTable();//your table
boolean pressingCTRL=false;//flag, if pressing CTRL it is true, otherwise it is false.
Vector selectedCells = new Vector<int[]>();//int[]because every entry will store {cellX,cellY}
public void something(){
KeyListener tableKeyListener = new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if(e.getKeyCode()==KeyEvent.VK_CTRL){//check if user is pressing CTRL key
pressingCTRL=true;
}
}
@Override
public void keyReleased(KeyEvent e) {
if(e.getKeyCode()==KeyEvent.VK_CTRL){//check if user released CTRL key
pressingCTRL=false;
}
}
};
MouseListener tableMouseListener = new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
if(pressingCTRL){//check if user is pressing CTRL key
int row = theTable.rowAtPoint(e.getPoint());//get mouse-selected row
int col = theTable.columnAtPoint(e.getPoint());//get mouse-selected col
int[] newEntry = new int[]{row,col};//{row,col}=selected cell
if(selectedCells.contains(newEntry)){
//cell was already selected, deselect it
selectedCells.remove(newEntry);
}else{
//cell was not selected
selectedCells.add(newEntry);
}
}
}
};
theTable.addKeyListener(tableKeyListener);
theTable.addMouseListener(tableMouseListener);
}
关于swing - JTable : how to get selected cells?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/14416188/