Start creating buttons dynamically

app/src/main/java/de/mlte/soundboard/MainActivity.kt

@@ -8,7 +8,10 @@ import android.media.MediaPlayer
 import android.net.Uri
 import android.os.Bundle
 import android.support.v7.app.AppCompatActivity
+import android.view.LayoutInflater
 import android.view.animation.LinearInterpolator
+import android.widget.FrameLayout
+import android.widget.GridLayout
 import android.widget.ProgressBar
 import android.widget.TextView
 import java.io.BufferedInputStream
@@ -20,6 +23,8 @@ class MainActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
 
+        duplicateButton()
+
         loadPreferences()
 
         var player: MediaPlayer? = null
@@ -75,6 +80,30 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
+    private fun duplicateButton() {
+        val inflater = getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
+        val parent = findViewById<GridLayout>(R.id.grid_layout)
+
+        parent.columnCount = 2
+
+        for (row in 0..1) {
+            for (col in 0..1) {
+                val newFrame = inflater.inflate(R.layout.layout_button, null)
+                // newFrame.findViewById<ProgressBar>(R.id.progress_bar)
+                // newFrame.findViewById<TextView>(R.id.text_view_button)
+
+                val params = GridLayout.LayoutParams()
+                params.columnSpec = GridLayout.spec(col, 1, 1.0f)
+                params.rowSpec = GridLayout.spec(row, 1, 1.0f)
+                params.width = 0
+                params.height = 0
+                newFrame.layoutParams = params
+
+                parent.addView(newFrame)
+            }
+        }
+    }
+
     private fun loadPreferences() {
         val preferences = getPreferences(Context.MODE_PRIVATE)
         val caption = preferences.getString("caption", "")

app/src/main/res/layout/activity_main.xml

@@ -7,69 +7,12 @@
     tools:context="de.mlte.soundboard.MainActivity">
 
     <GridLayout
+        android:id="@+id/grid_layout"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:columnCount="1"
         android:padding="1dp">
 
-        <FrameLayout
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_column="0"
-            android:layout_columnWeight="1"
-            android:layout_row="0"
-            android:layout_rowWeight="1"
-            android:padding="2dp">
-
-            <ProgressBar
-                android:id="@+id/progress_bar"
-                style="?android:attr/progressBarStyleHorizontal"
-                android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                android:indeterminate="false"
-                android:progressDrawable="@drawable/progress_bar_states" />
-
-            <TextView
-                android:id="@+id/text_view_button"
-                android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                android:gravity="center"
-                android:padding="6dp"
-                android:text="Enter"
-                android:textColor="@android:color/white"
-                android:textSize="16sp"
-                android:textStyle="bold" />
-
-        </FrameLayout>
-
-        <FrameLayout
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_column="0"
-            android:layout_columnWeight="1"
-            android:layout_row="1"
-            android:layout_rowWeight="1"
-            android:padding="2dp">
-
-            <ProgressBar
-                style="?android:attr/progressBarStyleHorizontal"
-                android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                android:indeterminate="false"
-                android:progressDrawable="@drawable/progress_bar_states" />
-
-            <TextView
-                android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                android:gravity="center"
-                android:padding="6dp"
-                android:text="Enter"
-                android:textColor="@android:color/white"
-                android:textSize="16sp"
-                android:textStyle="bold" />
-
-        </FrameLayout>
-
     </GridLayout>
 
 </android.support.constraint.ConstraintLayout>

app/src/main/res/layout/layout_button.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:padding="2dp">
+    <ProgressBar
+        android:id="@+id/progress_bar"
+        style="?android:attr/progressBarStyleHorizontal"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:indeterminate="false"
+        android:progressDrawable="@drawable/progress_bar_states" />
+
+    <TextView
+        android:id="@+id/text_view_button"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:gravity="center"
+        android:padding="6dp"
+        android:text="Enter"
+        android:textColor="@android:color/white"
+        android:textSize="16sp"
+        android:textStyle="bold" />
+
+</FrameLayout>