Java swing编程，用什么类实现导航栏？

import java.awt.Button

import java.awt.event.ActionEvent

import java.awt.event.ActionListener

import javax.swing.JFrame

public class Demo {

public static void main(String[] args) {

Demo demo = new Demo()

demo.run()

}

public void run() {

JFrame frame = new JFrame("title1")

frame.setLayout(null)

frame.setBounds(10, 10, 500, 300)

Button button = new Button("click")

button.setBounds(15, 15, 200, 100)

frame.add(button)

frame.setVisible(true)

button.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

JFrame frame = new JFrame("title2")

frame.setLayout(null)

frame.setBounds(20, 20, 300, 100)

frame.setVisible(true)

}

})

}

}

1、设置状态栏为透明黑色：

在AppDelegate.h的- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions函数里：添加：

[UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleBlackOpaque

// UIStatusBarStyleBlackTranslucent不行

2、设置导航栏背景颜色和返回按钮颜色

[self.navigationBar setBackgroundImage:[UIImage imageNamed:@"navigationBar_bk"] forBarMetrics:UIBarMetricsDefault]

[self.navigationBar setBackgroundColor:[UIColor blackColor]]// 设置导航栏背景颜色

self.navigationBar.tintColor = [UIColor colorWithRed:51.0/255.0 green:143.0/255.0 blue:210.0/255.0 alpha:0.8]// 其上默认按钮（比如返回按钮）颜色

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