I am writing an app which will create drawable shapes and add them to other drawables. (Think Tetris pieces onto a Tetris board.) As a test, I want to have a particular shape appear when my activity is loaded, but I cannot get a Drawable to appear in the ImageView I created. Could anyone explain why the following code isn't working?
Activity code:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ImageView mImg = (ImageView) findViewById(R.id.img);
ShapeDrawable sD = new ShapeDrawable(new RectShape());
sD.setBounds(1,1,10,10);
sD.getPaint().setColor(Color.BLUE);
mImg.setImageDrawable(sD);
}
main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<ImageView
android:id="@+id/img"
android:layout_width="320px"
android:layout_height="206px"
/>
<TextView
android:id="@+id/debug"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
Note: I have been able to make static resources from the 'drawable' folder appear in this ImageView, just not Drawables I have created in the code.
You can also use a simple View and just set its background drawable to the shape using setBackgroundDrawable
.
The ImageView probably can't display your shape because it has no default size. You can give your shape a default sizer using sD.setIntrinsicWidth
and sD.setIntrinsicHeight
.
alternatively you can create your own custom view by extending the view class. I suppose Drawable objects can only be handled from within a custom view. just create and render the drawable in the onDraw()
method
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