我正在开发一个具有 jtable 的应用程序,用户可以开始下载。我想在表格中添加下载名称、状态和进度条。我正在这样做:
INIT JTABLE:(由NETBEANS自动创建的代码(有没有办法编辑它?oO))
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null},
{null, null, null},
{null, null, null},
{null, null, null}
},
new String [] {
"Categoria", "Sottocategoria", "Progresso (%)"
}
) {
Class[] types = new Class [] {
java.lang.String.class, java.lang.String.class, java.lang.Object.class
};
boolean[] canEdit = new boolean [] {
false, false, false
};
public Class getColumnClass(int columnIndex) {
return types [columnIndex];
}
public boolean isCellEditable(int rowIndex, int columnIndex) {
return canEdit [columnIndex];
}
});
jTable1.setColumnSelectionAllowed(true);
jScrollPane2.setViewportView(jTable1);
jTable1.getColumnModel().getSelectionModel().setSelectionMode(javax.swing.ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
创建渲染器:
class ProgRenderer implements TableCellRenderer {
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
return (JProgressBar) value;
}
}
将其添加到最后一列:
jTable1.getColumn("Progresso (%)").setCellRenderer(new ProgRenderer());
现在我创建了一个ArrayList<Thread>
来保存活动线程,并创建了一个来保存ArrayList<JProgressBar>
jtable 中存在的所有进度条(正确的方式?)。
现在要添加我这样的新行:
DefaultTableModel d = (DefaultTableModel) jTable1.getModel();
work++; // to have a number of active threads.
progress.add(getProgress(x, total));
d.addRow(new Object[]{Html.categoria, "Inizio scansione", progress.get(work)});
Thread t = new Thread(new Runnable() {
@Override
public void run() {
int max = Html.totale;
for(int i=1;i<=max;i++){
try {
progress.get(work).setValue(i); // JUST FOR TRY
System.out.println(progress.get(work).getValue()); // TRY
Thread.sleep(1000);
} catch (InterruptedException ex) {
}
}
});
working.add(t);
t.start();
private JProgressBar getProgress(int x, int total) {
JProgressBar progressCsv = new JProgressBar();
progressCsv.setMaximum(total);
progressCsv.setStringPainted(true);
progressCsv.setString("0%");
return progressCsv;
}
我的问题是进度没有更新,我的方法错了吗?你能帮助我吗?谢谢