Fixes issue #2: Added Material slider to adjust the brush size (#11)

* Added  Material slider to adjust the brush size

* Update dialog_brush_size.xml

* Update MainActivity.kt

* Added EOL

Author: Smarshal21

app/src/main/java/com/rihsi/dyno/undraw/MainActivity.kt

@@ -62,6 +62,7 @@ class MainActivity : AppCompatActivity() {
                 requestReadStoragePermission()
             }
         }
+        
         binding.ibSave.setOnClickListener {
             checkForShare=0
             requestWriteStoragePermission()
@@ -70,6 +71,7 @@ class MainActivity : AppCompatActivity() {
                   val flDrawingView: FrameLayout = binding.flDrawingViewContainer
                     saveMediaToStorage(getBitmapFromView(flDrawingView))
                 }
+                
             }
         }
             binding.ibShare.setOnClickListener{
@@ -155,21 +157,14 @@ class MainActivity : AppCompatActivity() {
         var brushSizeBinding = DialogBrushSizeBinding.inflate(layoutInflater)
         brushDialog.setContentView(brushSizeBinding.root)
         brushDialog.setTitle("Brush Size: ")
-
-        brushSizeBinding.brushSizeMinus.setOnClickListener {
-            drawingView.setSizeForBrush(10f)
-            brushDialog.dismiss()
-        }
-        brushSizeBinding.brushSizePlus.setOnClickListener {
-            drawingView.setSizeForBrush(20f)
-            brushDialog.dismiss()
-        }
-        brushSizeBinding.brushSizeLarge.setOnClickListener {
-            drawingView.setSizeForBrush(30f)
-            brushDialog.dismiss()
+        
+        brushSizeBinding.brush_size_slider.addOnChangeListener { slider, value, fromUser ->
+            binding.drawingView.setSizeForBrush(slider.value)
         }
+        
         brushDialog.show()
     }
+    
     private fun getBitmapFromView(view: View): Bitmap{
         val returnedBitmap  = Bitmap.createBitmap(view.width, view.height, Bitmap.Config.ARGB_8888)
         val canvas = Canvas(returnedBitmap)
@@ -183,6 +178,7 @@ class MainActivity : AppCompatActivity() {
         view.draw(canvas)
         return returnedBitmap
     }
+    
 private fun saveMediaToStorage(bitmap: Bitmap){
     val filename = "${System.currentTimeMillis()}.png"
     var fos: OutputStream? =null
@@ -216,6 +212,7 @@ private fun saveMediaToStorage(bitmap: Bitmap){
         }
     }
 }
+
     private fun shareImage(result:Uri?){
             val shareIntent = Intent()
             shareIntent.action = Intent.ACTION_SEND

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

@@ -8,39 +8,19 @@
         android:gravity="center"
         android:orientation="vertical">
 
-        <ImageButton
-            android:id="@+id/brush_size_minus"
-            android:layout_width="wrap_content"
+        <com.google.android.material.slider.Slider
+            android:id="@+id/brush_size_slider"
+            android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:contentDescription="small image"
-            android:src="@drawable/ic_brush_size_minus"
-            app:layout_constraintBottom_toTopOf="@+id/brush_size_plus"
+            android:layout_marginTop="28dp"
+            android:value="20.0f"
+            android:valueFrom="0.0f"
+            android:valueTo="80.0f"
             app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias="0.0"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="parent" />
 
-        <ImageButton
-            android:id="@+id/brush_size_plus"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:contentDescription="large image"
-            android:src="@drawable/ic_brush_size_plus"
-            app:layout_constraintBottom_toTopOf="@id/brush_size_large"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/brush_size_minus" />
-
-        <ImageButton
-            android:id="@+id/brush_size_large"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:contentDescription="large image"
-            android:src="@drawable/ic_brush_size_large"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/brush_size_plus" />
-
 
     </androidx.constraintlayout.widget.ConstraintLayout>
-</layout>
+</layout>