#!/usr/bin/env python

# -*- coding: utf-8 -*-
import sys
from PyQt5.QtWidgets import (
    QApplication, QMainWindow, QPushButton, QLabel,
    QVBoxLayout, QHBoxLayout, QWidget, QStackedWidget
)
from PyQt5.QtCore import Qt

# ======================
# 主菜单
# ======================
class MainMenuWidget(QWidget):
    def __init__(self, parent):
        super().__init__(parent)
        layout = QVBoxLayout()
        title = QLabel("音频分类器")
        title.setAlignment(Qt.AlignCenter)
        title.setStyleSheet("font-size: 24px; font-weight: bold; margin: 20px;")
        layout.addWidget(title)

        btn1 = QPushButton("采集音频")
        btn1.clicked.connect(lambda: parent.switch_to_input("record"))
        btn2 = QPushButton("上传WAV文件")
        btn2.clicked.connect(lambda: parent.switch_to_input("upload"))
        btn3 = QPushButton("历史记录")
        btn3.clicked.connect(parent.switch_to_history)

        for b in [btn1, btn2, btn3]:
            b.setMinimumHeight(60)
            layout.addWidget(b)

        layout.addStretch(1)
        self.setLayout(layout)

# ======================
# 输入界面（录音 / 上传）
# ======================
class InputWidget(QWidget):
    def __init__(self, parent, mode="record"):
        super().__init__(parent)
        self.parent = parent
        self.mode = mode
        self.init_ui()

    def init_ui(self):
        layout = QVBoxLayout()

        # 返回按钮
        back = QPushButton("返回")
        back.clicked.connect(self.parent.switch_to_main_menu)
        layout.addWidget(back)

        # 界面标题
        title = QLabel("音频采集" if self.mode == "record" else "上传WAV文件")
        title.setAlignment(Qt.AlignCenter)
        layout.addWidget(title)

        # 处理按钮
        process_btn = QPushButton("开始处理")
        process_btn.clicked.connect(lambda: self.parent.switch_to_result())
        layout.addWidget(process_btn)

        self.setLayout(layout)

# ======================
# 结果页
# ======================
class ResultWidget(QWidget):
    def __init__(self, parent):
        super().__init__(parent)
        self.parent = parent
        layout = QVBoxLayout()

        back = QPushButton("返回")
        back.clicked.connect(self.parent.switch_to_main_menu)
        layout.addWidget(back)

        title = QLabel("处理结果")
        title.setAlignment(Qt.AlignCenter)
        layout.addWidget(title)

        self.setLayout(layout)

# ======================
# 历史记录页
# ======================
class HistoryWidget(QWidget):
    def __init__(self, parent):
        super().__init__(parent)
        self.parent = parent
        layout = QVBoxLayout()

        back = QPushButton("返回")
        back.clicked.connect(self.parent.switch_to_main_menu)
        layout.addWidget(back)

        title = QLabel("历史记录")
        title.setAlignment(Qt.AlignCenter)
        layout.addWidget(title)

        self.setLayout(layout)

# ======================
# 主窗口
# ======================
class AudioClassifierGUI(QMainWindow):
    def __init__(self):
        super().__init__()
        self.current_input_mode = "record"
        self.init_ui()

    def init_ui(self):
        self.setWindowTitle("音频分类器")
        self.setGeometry(100, 100, 800, 600)

        # 创建堆叠窗口
        self.stacked_widget = QStackedWidget()
        self.setCentralWidget(self.stacked_widget)

        # 创建各个界面
        self.main_menu_widget = MainMenuWidget(self)
        self.record_input_widget = InputWidget(self, "record")
        self.upload_input_widget = InputWidget(self, "upload")
        self.result_widget = ResultWidget(self)
        self.history_widget = HistoryWidget(self)

        # 添加到堆叠窗口
        self.stacked_widget.addWidget(self.main_menu_widget)  # 0
        self.stacked_widget.addWidget(self.record_input_widget)  # 1
        self.stacked_widget.addWidget(self.upload_input_widget)  # 2
        self.stacked_widget.addWidget(self.result_widget)  # 3
        self.stacked_widget.addWidget(self.history_widget)  # 4

        # 默认显示主菜单
        self.stacked_widget.setCurrentWidget(self.main_menu_widget)

    def switch_to_input(self, mode):
        self.current_input_mode = mode
        if mode == "record":
            self.stacked_widget.setCurrentWidget(self.record_input_widget)
        else:
            self.stacked_widget.setCurrentWidget(self.upload_input_widget)

    def switch_to_main_menu(self):
        self.stacked_widget.setCurrentWidget(self.main_menu_widget)

    def switch_to_result(self):
        self.stacked_widget.setCurrentWidget(self.result_widget)

    def switch_to_history(self):
        self.stacked_widget.setCurrentWidget(self.history_widget)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    window = AudioClassifierGUI()
    window.show()
    sys.exit(app.exec_())

pyqt.py

@@ -0,0 +1,164 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+import sys
+from PyQt5.QtWidgets import (
+    QApplication, QMainWindow, QPushButton, QLabel,
+    QVBoxLayout, QHBoxLayout, QWidget, QStackedWidget
+)
+from PyQt5.QtCore import Qt
+
+
+# ======================
+# 主菜单
+# ======================
+class MainMenuWidget(QWidget):
+    def __init__(self, parent):
+        super().__init__(parent)
+        layout = QVBoxLayout()
+        title = QLabel("音频分类器")
+        title.setAlignment(Qt.AlignCenter)
+        title.setStyleSheet("font-size: 24px; font-weight: bold; margin: 20px;")
+        layout.addWidget(title)
+
+        btn1 = QPushButton("采集音频")
+        btn1.clicked.connect(lambda: parent.switch_to_input("record"))
+        btn2 = QPushButton("上传WAV文件")
+        btn2.clicked.connect(lambda: parent.switch_to_input("upload"))
+        btn3 = QPushButton("历史记录")
+        btn3.clicked.connect(parent.switch_to_history)
+
+        for b in [btn1, btn2, btn3]:
+            b.setMinimumHeight(60)
+            layout.addWidget(b)
+
+        layout.addStretch(1)
+        self.setLayout(layout)
+
+
+# ======================
+# 输入界面（录音 / 上传）
+# ======================
+class InputWidget(QWidget):
+    def __init__(self, parent, mode="record"):
+        super().__init__(parent)
+        self.parent = parent
+        self.mode = mode
+        self.init_ui()
+
+    def init_ui(self):
+        layout = QVBoxLayout()
+
+        # 返回按钮
+        back = QPushButton("返回")
+        back.clicked.connect(self.parent.switch_to_main_menu)
+        layout.addWidget(back)
+
+        # 界面标题
+        title = QLabel("音频采集" if self.mode == "record" else "上传WAV文件")
+        title.setAlignment(Qt.AlignCenter)
+        layout.addWidget(title)
+
+        # 处理按钮
+        process_btn = QPushButton("开始处理")
+        process_btn.clicked.connect(lambda: self.parent.switch_to_result())
+        layout.addWidget(process_btn)
+
+        self.setLayout(layout)
+
+
+# ======================
+# 结果页
+# ======================
+class ResultWidget(QWidget):
+    def __init__(self, parent):
+        super().__init__(parent)
+        self.parent = parent
+        layout = QVBoxLayout()
+
+        back = QPushButton("返回")
+        back.clicked.connect(self.parent.switch_to_main_menu)
+        layout.addWidget(back)
+
+        title = QLabel("处理结果")
+        title.setAlignment(Qt.AlignCenter)
+        layout.addWidget(title)
+
+        self.setLayout(layout)
+
+
+# ======================
+# 历史记录页
+# ======================
+class HistoryWidget(QWidget):
+    def __init__(self, parent):
+        super().__init__(parent)
+        self.parent = parent
+        layout = QVBoxLayout()
+
+        back = QPushButton("返回")
+        back.clicked.connect(self.parent.switch_to_main_menu)
+        layout.addWidget(back)
+
+        title = QLabel("历史记录")
+        title.setAlignment(Qt.AlignCenter)
+        layout.addWidget(title)
+
+        self.setLayout(layout)
+
+
+# ======================
+# 主窗口
+# ======================
+class AudioClassifierGUI(QMainWindow):
+    def __init__(self):
+        super().__init__()
+        self.current_input_mode = "record"
+        self.init_ui()
+
+    def init_ui(self):
+        self.setWindowTitle("音频分类器")
+        self.setGeometry(100, 100, 800, 600)
+
+        # 创建堆叠窗口
+        self.stacked_widget = QStackedWidget()
+        self.setCentralWidget(self.stacked_widget)
+
+        # 创建各个界面
+        self.main_menu_widget = MainMenuWidget(self)
+        self.record_input_widget = InputWidget(self, "record")
+        self.upload_input_widget = InputWidget(self, "upload")
+        self.result_widget = ResultWidget(self)
+        self.history_widget = HistoryWidget(self)
+
+        # 添加到堆叠窗口
+        self.stacked_widget.addWidget(self.main_menu_widget)  # 0
+        self.stacked_widget.addWidget(self.record_input_widget)  # 1
+        self.stacked_widget.addWidget(self.upload_input_widget)  # 2
+        self.stacked_widget.addWidget(self.result_widget)  # 3
+        self.stacked_widget.addWidget(self.history_widget)  # 4
+
+        # 默认显示主菜单
+        self.stacked_widget.setCurrentWidget(self.main_menu_widget)
+
+    def switch_to_input(self, mode):
+        self.current_input_mode = mode
+        if mode == "record":
+            self.stacked_widget.setCurrentWidget(self.record_input_widget)
+        else:
+            self.stacked_widget.setCurrentWidget(self.upload_input_widget)
+
+    def switch_to_main_menu(self):
+        self.stacked_widget.setCurrentWidget(self.main_menu_widget)
+
+    def switch_to_result(self):
+        self.stacked_widget.setCurrentWidget(self.result_widget)
+
+    def switch_to_history(self):
+        self.stacked_widget.setCurrentWidget(self.history_widget)
+
+
+if __name__ == "__main__":
+    app = QApplication(sys.argv)
+    window = AudioClassifierGUI()
+    window.show()
+    sys.exit(app.exec_())