Can you make a square full of color without all the complications? I say complications, because the examples I see here on the internet require that I create another class, inheriting from the View, doing drawRect() in the onDraw() function through Canvas ...
Finally, there is something so simple:
int width = 10;
GridLayout gl = (GridLayout)findViewById( R.ids.mainGridLayout );
Square s = new Square( width );
gl.addView( s );
As I think you want to add a square to a GridLayout , the simplest solution would be to create a View, set a background color, and include it in GridLayout :
View view = new View(this);
view.setBackgroundColor(Color.GREEN);
gl.addView(view);
But for your information Android allows you to create shapes, such as rectangles (and therefore squares), and include them as the background of a layout as if it were a drawable . With this your squares can have:
For example:
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" android:padding="10dp">
<stroke
android:width="2dp"
android:color="#FFFFFFFF"/>
<gradient
android:startColor="#DD000000"
android:endColor="#DD2ECCFA"
android:angle="225"/>
<corners
android:radius="2dp"
android:bottomRightRadius="0dp"
android:bottomLeftRadius="0dp"
android:topLeftRadius="15dp"
android:topRightRadius="15dp"/>
</shape>
You include in the layout like this:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/meu_retangulo" />
If all you want is a square, why not just use a LinearLayout with a background color?
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_centerInParent="true"
android:background="@android:color/holo_red_dark"
android:layout_width="200dp"
android:layout_height="200dp" />
</RelativeLayout>
You can position it anywhere you want, even over other views.
You can also create your image and use it as a Drawable feature.