[英]Android: How to create a GridLayout [not GridView] programmatically?
[英]How create a button by programmatically for a GridLayout
我正在嘗試通過在 Kotlin 中以編程方式創建 GridLayout。 我的 XML 代碼是這樣的:
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
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"
android:background="#46FF4433"
tools:context=".MainActivity">
<androidx.gridlayout.widget.GridLayout
android:id="@+id/grid"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:rowCount="5">
app:columnCount="3"
</androidx.gridlayout.widget.GridLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
我想在我的網格中設置 15 個按鈕。 我的主要活動是這樣的:
val gridLayout: GridLayout = findViewById(R.id.grid)
for (i in 1..10){
val button = Button(this)
button.text = "Boton: " + i
button.setBackgroundColor(Color.parseColor("#ffffff"));
gridLayout.addView(button)
}
但我需要每個按鈕是這樣的:
<Button
android:id="@+id/button1"
app:layout_gravity="fill"
app:layout_columnWeight="1"
app:layout_rowWeight="1"
android:text="Button 1"
android:background="#ffffff"
/>
我認為這與布局參數有關,但我不知道如何設置這些屬性。
看看GridLayout.LayoutParams和GridLayout.Spec 。 您可以執行以下操作:
val button = Button(this)
val lp = GridLayout.LayoutParams()
lp.setGravity(Gravity.FILL)
// GridLayout.spec is immutable, so one can be applied more than once.
// There are several other versions of GridLayout.spec which may be applicable.
lp.rowSpec = GridLayout.spec(row, 1.0f) // row start, weight
lp.columnSpec = GridLayout.spec(col, 1.0f) // column start, weight
button.layoutParams = lp
我沒有測試過這個,但它應該讓你開始。
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