animation scaling issues fixed

app/src/main/java/com/wesaphzt/privatelock/MainActivity.java

@@ -22,10 +22,11 @@ import androidx.fragment.app.FragmentTransaction;
 
 import android.os.CountDownTimer;
 import android.preference.PreferenceManager;
-import android.util.Log;
 import android.view.View;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.view.ViewTreeObserver;
+import android.widget.RelativeLayout;
 import android.widget.SeekBar;
 import android.widget.TextView;
 import android.widget.Toast;
@@ -126,10 +127,30 @@ public class MainActivity extends AppCompatActivity {
             }
         });
 
-        //https://stackoverflow.com/questions/29381474/how-to-draw-a-circle-with-animation-in-android-with-circle-size-based-on-a-value
         circle = findViewById(R.id.circle);
         circle_bg = findViewById(R.id.circle_bg);
 
+        final RelativeLayout relativeLayout = findViewById(R.id.content_main);
+        final RelativeLayout rlCircle = findViewById(R.id.rlCircle);
+
+        //scale height/width of animation
+        relativeLayout.getViewTreeObserver().addOnGlobalLayoutListener(
+                new ViewTreeObserver.OnGlobalLayoutListener() {
+
+                    @Override
+                    public void onGlobalLayout() {
+                        //only want to do this once
+                        relativeLayout.getViewTreeObserver().removeGlobalOnLayoutListener(this);
+
+                        circle.setRect((circle.getHeight() / 2), (circle.getHeight()) / 2);
+                        circle_bg.setRect((circle_bg.getHeight() / 2), (circle_bg.getHeight()) / 2);
+
+                        circle.setX((rlCircle.getWidth() - circle.getRect()) / 2);
+                        circle_bg.setX((rlCircle.getWidth() - circle.getRect()) / 2);
+                    }
+                });
+
+
         circle.setColor(circleDefaultR, circleDefaultG, circleDefaultB);
         //set background circle
         CircleAngleAnimation animation = new CircleAngleAnimation(circle_bg, 360);

app/src/main/java/com/wesaphzt/privatelock/animation/Circle.java

@@ -13,15 +13,14 @@ public class Circle extends View {
     private static final int START_ANGLE_POINT = 90;
 
     private final Paint paint;
-    private final RectF rect;
+    private RectF rect;
 
     private float angle;
+    private final int strokeWidth = 10;
 
     public Circle(Context context, AttributeSet attrs) {
         super(context, attrs);
 
-        final int strokeWidth = 10;
-
         paint = new Paint();
         paint.setAntiAlias(true);
         paint.setStyle(Paint.Style.FILL);
@@ -29,8 +28,8 @@ public class Circle extends View {
         //circle color (currently set upon instance)
         //paint.setColor(Color.BLUE);
 
-        //size
+        //size (currently set upon instance)
-        rect = new RectF(strokeWidth, strokeWidth, 600 + strokeWidth, 600 + strokeWidth);
+        //rect = new RectF(strokeWidth, strokeWidth, 230 + strokeWidth, 230 + strokeWidth);
 
         //initial angle (optional)
         angle = 0;
@@ -53,4 +52,12 @@ public class Circle extends View {
     public void setAngle(float angle) {
         this.angle = angle;
     }
+
+    public void setRect(int right, int bottom) {
+        this.rect = new RectF(strokeWidth, strokeWidth, right, bottom);
+    }
+
+    public float getRect() {
+        return rect.right;
+    }
 }

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

@@ -142,22 +142,24 @@
         </androidx.cardview.widget.CardView>
 
         <RelativeLayout
-            android:layout_width="match_parent"
+            android:id="@+id/rlCircle"
-            android:layout_height="match_parent"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/activity_margin_large"
             android:layout_gravity="center_horizontal">
 
             <com.wesaphzt.privatelock.animation.Circle
                 android:id="@+id/circle_bg"
-                android:layout_width="240dp"
+                android:layout_width="wrap_content"
-                android:layout_height="240dp"
+                android:layout_height="wrap_content"
-                android:layout_centerHorizontal="true" />
+                android:layout_centerHorizontal="true"
+                android:gravity="center_horizontal" />
 
             <com.wesaphzt.privatelock.animation.Circle
                 android:id="@+id/circle"
-                android:layout_width="240dp"
+                android:layout_width="wrap_content"
-                android:layout_height="240dp"
+                android:layout_height="wrap_content"
-                android:layout_centerHorizontal="true"
+                android:layout_centerInParent="true"
                 android:gravity="center_horizontal" />
 
         </RelativeLayout>