Thursday, March 5, 2020

android kotlin - Material button disabled color example

MainActivity.kt

package com.cfsuman.kotlintutorials

import android.content.res.ColorStateList
import android.graphics.Color
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import com.google.android.material.button.MaterialButton


class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // Get the widgets from XML layout
        val btnClick = findViewById<MaterialButton>(R.id.btnClick);

        // Create a color state list programmatically
        val states = arrayOf(
            intArrayOf(android.R.attr.state_enabled), // enabled
            intArrayOf(-android.R.attr.state_enabled) // disabled
        )
        val colors = intArrayOf(
            Color.parseColor("#545AA7"), // enabled color
            Color.parseColor("#E6E6FA") // disabled color
        )
        val colorStates = ColorStateList(states,colors)

        // Set button background tint
        btnClick.backgroundTintList = colorStates

        // Disable button
        btnClick.setOnClickListener {
            (it as MaterialButton).apply {
                isEnabled = false
            }
        }
    }
}
activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/rootLayout"
    android:background="#F8F8F8">

    <com.google.android.material.button.MaterialButton
        android:id="@+id/btnNormal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:text="Material Button Normal"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <com.google.android.material.button.MaterialButton
        android:id="@+id/btnDisabled"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:enabled="false"
        android:text="Material Button Disabled"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/btnNormal" />

    <com.google.android.material.button.MaterialButton
        android:id="@+id/btnTint"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:backgroundTint="@color/color_state_material_button"
        android:text="Tint Red + Normal"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/btnDisabled" />

    <com.google.android.material.button.MaterialButton
        android:id="@+id/btnTintDisabled"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:backgroundTint="@color/color_state_material_button"
        android:text="Tint Red + Disabled"
        android:enabled="false"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/btnTint" />

    <com.google.android.material.button.MaterialButton
        android:id="@+id/btnClick"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="32dp"
        android:text="Programmatically Tint + Click To Disable"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/btnTintDisabled" />

</androidx.constraintlayout.widget.ConstraintLayout>
res/color/color_state_material_button.xml

<?xml version="1.0" encoding="utf-8"?>
<selector
    xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:state_enabled="true"
        android:color="#D3212D" />
    <item
        android:state_enabled="false"
        android:color="#DBE1E4"
        />
</selector>
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