This series of IoT App development notes are the learning notes of station B video tutorials, video address:

  • Day1 How does Android project code work
  • Day2 Common controls and interface layout design (part 1)
  • Day3 Common controls and interface layout design (part 2)
  • Day4 Import of MQTT Jar package and debugging of Internet of Things
  • Day5 APP practical control of Internet of Things ESP8266
  • 【7 days Java0 basic Crash Android development 】
  • [7-day Java0 Basic Rapid Android Development] Day7 achievement Demonstration

1. Toast

Toast is a message prompt mechanism provided in Android. It will pop up a message and disappear after a period of time. It is very convenient.

2. Example

Add the following code to the active file:

Button login_button = (Button)findViewById(R.id.button_login);

        login_button.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View view) {
                Toast.makeText(LoginActivity.this."Login successful",Toast.LENGTH_SHORT).show(); }});Copy the code

3. Operation effect

Welcome to subscribe to my wechat official account: “McUlover666”.