在py文件中用kivy写手机应用，在手机界面按下“开始录音”的按钮时调用百度api开始录音并识别，同时在文本框中展现识别结果，按下”清空”按钮清除文本框内容；同时在界面创建“加载样品溶液”“加载清洗液一““加载清洗液二““加载洗脱溶液”“总操作”的按钮代码生成

以下是一个简单的示例代码，可以实现你所描述的功能：

from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.textinput import TextInput
from kivy.uix.boxlayout import BoxLayout
import os
import json
from aip import AipSpeech


class VoiceRecognitionApp(App):

    def __init__(self, *args, **kwargs):
        super(VoiceRecognitionApp, self).__init__(*args, **kwargs)
        self.text_input = None

    def build(self):
        layout = BoxLayout(orientation='vertical')

        # 创建文本框
        self.text_input = TextInput(multiline=True)
        layout.add_widget(self.text_input)

        # 创建“开始录音”按钮
        record_button = Button(text='开始录音')
        record_button.bind(on_press=self.start_recording)
        layout.add_widget(record_button)

        # 创建“清空”按钮
        clear_button = Button(text='清空')
        clear_button.bind(on_press=self.clear_text_input)
        layout.add_widget(clear_button)

        # 创建“加载样品溶液”按钮
        load_sample_button = Button(text='加载样品溶液')
        load_sample_button.bind(on_press=self.load_sample_solution)
        layout.add_widget(load_sample_button)

        # 创建“加载清洗液一”按钮
        load_cleaner1_button = Button(text='加载清洗液一')
        load_cleaner1_button.bind(on_press=self.load_cleaner1_solution)
        layout.add_widget(load_cleaner1_button)

        # 创建“加载清洗液二”按钮
        load_cleaner2_button = Button(text='加载清洗液二')
        load_cleaner2_button.bind(on_press=self.load_cleaner2_solution)
        layout.add_widget(load_cleaner2_button)

        # 创建“加载洗脱溶液”按钮
        load_elution_button = Button(text='加载洗脱溶液')
        load_elution_button.bind(on_press=self.load_elution_solution)
        layout.add_widget(load_elution_button)

        # 创建“总操作”按钮
        total_operation_button = Button(text='总操作')
        total_operation_button.bind(on_press=self.total_operation)
        layout.add_widget(total_operation_button)

        return layout

    def start_recording(self, instance):
        # 调用百度语音识别API进行语音识别
        app_id = 'your_app_id'
        api_key = 'your_api_key'
        secret_key = 'your_secret_key'
        client = AipSpeech(app_id, api_key, secret_key)
        result = client.asr(self.record_audio(), 'pcm', 16000, {
            'dev_pid': 1536,
        })
        if result['err_no'] == 0:
            # 在文本框中展示识别结果
            self.text_input.text += result['result'][0]
        else:
            print('语音识别失败')

    def record_audio(self):
        # 调用百度语音识别API进行语音识别
        os.system('arecord -D "plughw:1,0" -f S16_LE -r 16000 -d 5 -c 1 my_audio.pcm')
        with open('my_audio.pcm', 'rb') as f:
            return f.read()

    def clear_text_input(self, instance):
        # 清空文本框内容
        self.text_input.text = ''

    def load_sample_solution(self, instance):
        # 加载样品溶液
        pass

    def load_cleaner1_solution(self, instance):
        # 加载清洗液一
        pass

    def load_cleaner2_solution(self, instance):
        # 加载清洗液二
        pass

    def load_elution_solution(self, instance):
        # 加载洗脱溶液
        pass

    def total_operation(self, instance):
        # 总操作
        pass


if __name__ == '__main__':
    VoiceRecognitionApp().run()

需要注意的是，以上代码中的语音识别部分使用了百度语音识别API，需要在百度开发者平台上创建应用并获取相应的 App ID、API Key 和 Secret Key。同时，还需要安装 Baidu AIP SDK，可以通过以下命令进行安装：

pip install baidu-aip