In Android, there are some button components, including normal buttons, picture buttons, radio buttons, check buttons, and so on.

A normal button

<Button
  android:id="@+id/ID"
  android:layout_height="wrap_content"
  android:layout_width="wrap_content"
  android:text="Display Text"
/>

There are two ways to add a button click event listener, the first is to do it in java code.

Button login = (Button)findViewById(R.id.login)  // Get the buttons added in the layout file by ID
login.setOnClickListener(new OnClickListener(){  // Add a click event listener for the button

  @Overrid
  public void onClick(View v){
    // Write code to execute here
  }

})

Another way is to write a method in Activity that contains View type parameters, place the action code to trigger in the method, and then in the layout file, specify the corresponding method name through the android:onClick property.

public void myClick(View view){

  // Write the action button to execute here
}

Button Case Happy Relax Authorized Login Button

Create a shape resource file - > res/drawable new - > Drawable Resource file

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <!--fill color-->
    <solid android:color="#1FBAF3"/>
    <!--Arc radius with 4 corners-->
    <corners android:radius="5dp"/>
    <!--Set the distance between text and button boundaries-->
    <padding
        android:bottom="10dp"
        android:left="15dp"
        android:right="15dp"
        android:top="10dp"
        />

</shape>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#EFEFF4"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    >
    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:scaleType="fitStart"
        android:src="@drawable/top" />
    <!-- Add Authorization and Logon Button -->
    <Button
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/shape"
        android:text="Authorize and log on"
        android:textColor="#FFFFFF" />


</LinearLayout>

public class LoginActivity extends AppCompatActivity {
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_loginbtn);
        // Add Click Event Listener to Button
        Button button = (Button) findViewById(R.id.button1);
        //Add Click Event Listener to Button
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(LoginActivity.this,
                        "You have been authorized to log in for fun",Toast.LENGTH_SHORT).show();
            }
        });
    }
}

Picture button ImageButton

<ImageButton
  android:id="@+id/ID"
  android:layout_height="wrap_content"
  android:layout_width="wrap_content"
  android:src="@mipmap/Picture File Name"
  android:scaleType="Zoom mode"
  
/>

Attribute description for android:scaleType attribute

Radio Button

<RadioButton
  android:text="Display Text"
  android:id="@+id/id"
  android:checked="true| flase"
  

/>

The android:checked property is used to specify the checked state, the value of the property is true to indicate checked, the value of the property is false to indicate unchecked, and the default is false

Typically, the RadioButton component is used with the RadioGruoup component to form a radio button group

<RadioGroup
andorid:id="@+id/radioGroup1"
android:orientation="horizontal"
android:layout_width="wrop_content"
android:layout_height="wrap_content"
>
 <RadioButton
  android:layout_height="wrap_content"
  android:id="@+id/radio0"
  android:text="male"
  android:layout_width="wrop_content"
  android:checked="true"
/>
 <RadioButton
  android:layout_height="wrap_content"
  android:id="@+id/radio0"
  android:text="female"
  android:layout_width="wrop_content"
  
/>
</RadioGroup>

<Button
  android:text="Submit"
  android:id="@+id/button1"
  android:layout_width="wrop_content"
  android:layout_height="wrap_content"
/>

When changing the value of a radio button group, get the value of the selected radio button, add OnCheckedChangeListener, get the selected radio button according to checkedId in the onChenckedChanged() method, and get the corresponding value of the radio button through getText().