kotlin - How to change background Color to MaterialButton from android.support.design programmatically

Kotlin - How to change background Color to MaterialButton from android.support.design programmatically

To change the background color of a MaterialButton from the android.support.design library programmatically in Kotlin, you can use the setBackgroundColor method or set the background tint list.

Here's how you can do it:

Using setBackgroundColor

If you want to set a solid color as the background, you can use the setBackgroundColor method directly:

import android.graphics.Color import android.os.Bundle import android.support.v7.app.AppCompatActivity import android.support.design.button.MaterialButton class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) // Assuming you have a MaterialButton with the id `materialButton` val materialButton: MaterialButton = findViewById(R.id.materialButton) // Set the background color to a solid color materialButton.setBackgroundColor(Color.RED) } }

Using backgroundTintList

If you want to support background tinting, which is more in line with Material Design principles, you can use the backgroundTintList property:

import android.content.res.ColorStateList import android.os.Bundle import android.support.v7.app.AppCompatActivity import android.support.design.button.MaterialButton import androidx.core.content.ContextCompat class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) // Assuming you have a MaterialButton with the id `materialButton` val materialButton: MaterialButton = findViewById(R.id.materialButton) // Set the background tint color using a ColorStateList val color = ContextCompat.getColor(this, R.color.your_color) materialButton.backgroundTintList = ColorStateList.valueOf(color) } }

Using XML Attributes (Optional)

If you want to define the color in your XML and set it programmatically, you can do so by defining a color resource in your res/values/colors.xml:

<!-- res/values/colors.xml --> <resources> <color name="your_color">#FF0000</color> <!-- Define your color here --> </resources>

Then, you can reference this color resource in your code as shown in the backgroundTintList example above.

Full Example

Here's a full example combining everything:

import android.os.Bundle import android.support.v7.app.AppCompatActivity import android.support.design.button.MaterialButton import androidx.core.content.ContextCompat import android.content.res.ColorStateList class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) // Assuming you have a MaterialButton with the id `materialButton` val materialButton: MaterialButton = findViewById(R.id.materialButton) // Option 1: Using setBackgroundColor for a solid color // materialButton.setBackgroundColor(Color.RED) // Option 2: Using backgroundTintList for tinting val color = ContextCompat.getColor(this, R.color.your_color) materialButton.backgroundTintList = ColorStateList.valueOf(color) } }

This example demonstrates both methods of setting the background color of a MaterialButton programmatically in Kotlin. You can choose the one that best fits your needs.

Examples

  1. Kotlin change MaterialButton background color programmatically

    • Description: This query addresses how to dynamically change the background color of a MaterialButton in Kotlin.
    • Code:
      val materialButton: MaterialButton = findViewById(R.id.materialButton) materialButton.setBackgroundColor(ContextCompat.getColor(this, R.color.colorAccent))

  2. Kotlin set MaterialButton background color

    • Description: This query focuses on setting the background color of a MaterialButton programmatically in Kotlin.
    • Code:
      val materialButton: MaterialButton = findViewById(R.id.materialButton) materialButton.setBackgroundColor(Color.RED)

  3. Kotlin MaterialButton change background color dynamically

    • Description: This query explains how to dynamically change the background color of a MaterialButton in Kotlin.
    • Code:
      val materialButton: MaterialButton = findViewById(R.id.materialButton) materialButton.backgroundTintList = ColorStateList.valueOf(Color.BLUE)

  4. Kotlin MaterialButton setBackgroundColor

    • Description: This query provides information on using the setBackgroundColor method to change the background color of a MaterialButton in Kotlin.
    • Code:
      val materialButton: MaterialButton = findViewById(R.id.materialButton) materialButton.setBackgroundColor(Color.parseColor("#FF5733")) // Example color

  5. Kotlin MaterialButton background color change

    • Description: This query focuses on dynamically changing the background color of a MaterialButton in Kotlin code.
    • Code:
      val materialButton: MaterialButton = findViewById(R.id.materialButton) materialButton.background.setTint(ContextCompat.getColor(this, R.color.colorPrimary))

  6. Kotlin programmatically change MaterialButton background color

    • Description: This query addresses how to programmatically change the background color of a MaterialButton in Kotlin.
    • Code:
      val materialButton: MaterialButton = findViewById(R.id.materialButton) materialButton.backgroundTintList = ColorStateList.valueOf(resources.getColor(R.color.colorAccent))

  7. Kotlin MaterialButton set background color dynamically

    • Description: This query explains how to set the background color of a MaterialButton dynamically in Kotlin.
    • Code:
      val materialButton: MaterialButton = findViewById(R.id.materialButton) materialButton.background.setTint(Color.GREEN)

  8. Kotlin change MaterialButton background color using XML resource

    • Description: This query covers how to change the background color of a MaterialButton by referencing a color defined in XML resources.
    • Code:
      val materialButton: MaterialButton = findViewById(R.id.materialButton) materialButton.backgroundTintList = ColorStateList.valueOf(ContextCompat.getColor(this, R.color.my_button_color))

  9. Kotlin MaterialButton background color change on click

    • Description: This query focuses on changing the background color of a MaterialButton when clicked in Kotlin.
    • Code:
      val materialButton: MaterialButton = findViewById(R.id.materialButton) materialButton.setOnClickListener { materialButton.setBackgroundColor(Color.YELLOW) }

  10. Kotlin MaterialButton change background color with animation

    • Description: This query addresses how to change the background color of a MaterialButton with animation in Kotlin.
    • Code:
      val materialButton: MaterialButton = findViewById(R.id.materialButton) materialButton.setOnClickListener { val colorAnimation = ValueAnimator.ofObject(ArgbEvaluator(), Color.BLUE, Color.RED) colorAnimation.addUpdateListener { animator -> materialButton.setBackgroundColor(animator.animatedValue as Int) } colorAnimation.duration = 2000 colorAnimation.start() }

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