I am trying to create button C programmatically, but can not get the size below 231 pixels. The XML Buttons have 157 pixels width.
How do I make the button same size as the others?
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/main_layout"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="@+id/label_enter_code"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="30dp"
android:layout_marginTop="50dp"
android:text="@string/enter_code_label"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="@+id/code_1"
android:layout_width="50dp"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:inputType="textCapCharacters"
android:maxLength="2"
android:text="A1"
android:textAlignment="center"
android:textSize="@dimen/text_big"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintStart_toStartOf="@+id/label_enter_code"
app:layout_constraintTop_toBottomOf="@id/label_enter_code" />
<EditText
android:id="@+id/code_2"
android:layout_width="50dp"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/text_big"
android:inputType="textCapCharacters"
android:maxLength="2"
android:text="B2"
android:textAlignment="center"
android:textSize="30sp"
app:layout_constraintBottom_toBottomOf="@id/code_1"
app:layout_constraintStart_toEndOf="@id/code_1" />
<EditText
android:id="@+id/code_3"
android:layout_width="50dp"
android:layout_height="wrap_content"
android:layout_marginStart="30dp"
android:inputType="textCapCharacters"
android:maxLength="2"
android:text="C3"
android:textAlignment="center"
android:textSize="@dimen/text_big"
app:layout_constraintBottom_toBottomOf="@id/code_1"
app:layout_constraintStart_toEndOf="@id/code_2" />
<Button
android:id="@+id/button_a"
android:layout_width="@dimen/button_size"
android:layout_height="@dimen/button_size"
android:layout_marginTop="30dp"
android:text="A"
android:textSize="@dimen/text_big"
app:layout_constraintStart_toStartOf="@+id/code_1"
app:layout_constraintTop_toBottomOf="@+id/code_1" />
<Button
android:id="@+id/button_b"
android:layout_width="@dimen/button_size"
android:layout_height="@dimen/button_size"
android:text="B"
android:textSize="@dimen/text_big"
app:layout_constraintStart_toEndOf="@id/button_a"
app:layout_constraintBottom_toBottomOf="@id/button_a" />
<!--Button // This is what I want to achieve in code.
android:id="@+id/button_c"
android:layout_width="@dimen/button_size"
android:layout_height="@dimen/button_size"
android:text="C"
android:textSize="@dimen/text_big"
app:layout_constraintStart_toEndOf="@id/button_b"
app:layout_constraintBottom_toBottomOf="@id/button_a" />
</androidx.constraintlayout.widget.ConstraintLayout>
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val buttonSize = resources.getDimension(R.dimen.button_size).toInt()
val textSize = resources.getDimension(R.dimen.text_big)
val layout = main_layout
var letter = 67
val buttonB = button_b
val button = Button(this)
val txt = letter.toChar().toString()
button.id = View.generateViewId()
button.text = "C"
button.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize)
button.width = 157 // or start with 400, then click on C will reduce size gradually
// button.setPadding(0,0,0,0)
button.height = buttonSize
button.gravity = Gravity.CENTER
// button.minWidth = 0 // will set button width to 231, regardless other settings
layout.addView(button)
button.setOnClickListener {
buttonB.width = buttonB.width + 10
label_enter_code.text = "W: ${button.width}, H: ${button.height}"
button.width = button.width - 10
// val marginLayoutParams = button.layoutParams as MarginLayoutParams
// marginLayoutParams.setMargins(0,0,0,0)
}
var constraintSet = ConstraintSet()
constraintSet.clone(layout)
constraintSet.connect(button.id, ConstraintSet.START, button_b.id, ConstraintSet.END )
constraintSet.connect(button.id, ConstraintSet.BOTTOM, button_a.id, ConstraintSet.BOTTOM)
constraintSet.applyTo(main_layout)
}
}
Solution:
Instead of button.width/height I use now:
button.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize)
button.layoutParams = ViewGroup.LayoutParams(buttonSize,buttonSize)
I did not do in first place, because val lp = button.layoutParams resulted in Null.
