add some temp images for flashlight off and on

app/src/main/java/flashlight/simplemobiletools/com/MainActivity.java

@@ -59,13 +59,13 @@ public class MainActivity extends AppCompatActivity {
     private void enableFlashlight() {
         params.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
         camera.setParameters(params);
-        toggleBtn.getDrawable().setColorFilter(Color.GREEN, PorterDuff.Mode.SRC_ATOP);
+        toggleBtn.setBackground(getResources().getDrawable(R.mipmap.flashlight_big_on));
     }
 
     private void disableFlashlight() {
         params.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);
         camera.setParameters(params);
-        toggleBtn.getDrawable().setColorFilter(Color.RED, PorterDuff.Mode.SRC_ATOP);
+        toggleBtn.setBackground(getResources().getDrawable(R.mipmap.flashlight_big_off));
     }
 
     private void releaseCamera() {

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

@@ -13,6 +13,5 @@
     <ImageView
         android:id="@+id/toggle_btn"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:src="@mipmap/ic_launcher"/>
+        android:layout_height="match_parent"/>
 </RelativeLayout>