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[英]How can I set up my JProgressbar to show the progress of my program loading
[英]How to set up JProgressbar of running aplication
我的應用程序運行大約7秒鍾。
我想為此做一個進度條,但我不知道如何做。
你可以幫幫我嗎 ?
您應該將進度條用作不確定模式。
您可以使用如下形式:
private void dialogWaiting()
{
JProgressBar progressBar = new JProgressBar();
progressBar.setIndeterminate(true);
JTextArea msgLabel;
final JDialog dialogWaiting;
JPanel panel;
msgLabel = new JTextArea("Please wait...");
msgLabel.setEditable(false);
panel = new JPanel(new BorderLayout(5, 5));
panel.add(msgLabel, BorderLayout.PAGE_START);
panel.add(progressBar, BorderLayout.CENTER);
panel.setBorder(BorderFactory.createEmptyBorder(11, 11, 11, 11));
dialogWaiting = new JDialog(Frame.getFrames()[0], "Doing whatever", true);
dialogWaiting.getContentPane().add(panel);
dialogWaiting.setResizable(false);
dialogWaiting.pack();
dialogWaiting.setSize(300, dialogWaiting.getHeight());
dialogWaiting.setLocationRelativeTo(null);
dialogWaiting.setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);
dialogWaiting.setAlwaysOnTop(true);
msgLabel.setBackground(panel.getBackground());
SwingWorker worker = new SwingWorker() {
@Override
protected void done() {
// Close the dialog
dialogWaiting.dispose();
}
@Override
protected Void doInBackground() {
// Do the long running task here
// put all the code you want to run as the dialogWaiting is on
return null;
}
};
worker.execute();
dialogWaiting.setVisible(true);
}
基本上它很簡單,可以說應用程序有5種方法,這些方法會陸續執行。 每種方法完成后,您可以將進度條的進度設置為+ 20%。
public class App {
public void method_1(){
// method code
progressbar.setValue(20);
}
public void method_2(){
// method code
progressbar.setValue(40);
}
public void method_3(){
// method code
progressbar.setValue(60);
}
// etc
可能是在特定Thread
期間,也可能是在線程完成時,您甚至可以將其重置為0,然后在新線程啟動時重新啟動。 全部由您決定。
一種實現方法(有點愚蠢)是在代碼中多次使用setValue()
方法。 例:
void main(String[]args){
//assuming that you have imported the progressbar class and have instantiated it
//with the variable name "jp"
System.out.println();//simulating some work...
jp.setValue(10);
System.out.println()//simulating some work...
jp.setValue(20);
//you get the idea...
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