Draw a complex extrude in api below 23

Question

I am trying to make a drawable consisting of a circle and a rectangle. It works fine, and the api is set to 23. I noticed that in the latest api: height, gravity, weight, the following "item" attributes have been added. Is it possible to get effect in older sdk?

Drawable:

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:height="5dp"
        android:gravity="center_vertical"
        android:left="5dp">
        <shape android:shape="rectangle">
            <size
                android:width="50dp"
                android:height="5dp" />
            <solid android:color="#125572" />
        </shape>
    </item>
    <item
        android:width="20dp"
        android:height="20dp"
        android:gravity="center_vertical">
        <shape android:shape="oval">
            <solid android:color="#125572" />
            <size
                android:width="20dp"
                android:height="20dp" />
        </shape>
    </item>
</layer-list>

Image using api 23:

Image using api 22:

Answer 1

I know this question is quite old, but I solved this problem and may be useful for someone even now.

For the solution, I created two classes.

MyLayerDrawable, LayerDrawable. , .

public class MyLayerDrawable extends LayerDrawable{


private List<Layer> layers;

//some code here

public static class Layer{
    private Drawable drawable;
    private int topInset;
    private int leftInset;
    public Layer(Drawable drawable,int topInset,int leftInset){
        this.leftInset=leftInset;
        this.drawable=drawable;
        this.topInset=topInset;
    }
    public Drawable getDrawable(){
        return drawable;
    }
    public int getTopInset(){
        return topInset;
    }
    public int getLeftInset(){return leftInset;}
}

, , MyImageViewPatch, ImageView. setImageMyLayerDrawable (MyLayerDrawable layerDrawable). , ImageView, :

public void setImageMyLayerDrawable(MyLayerDrawable layerDrawable){
    imageView.setImageDrawable(layerDrawable);

}

setImageDrawable ImageView MyImageViewPatch. Drawable ImageView:

        imageView.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
        @Override
        public boolean onPreDraw() {
            MyLayerDrawable layerDrawable=(MyLayerDrawable)imageView.getDrawable();
            int numberOfLayers=layerDrawable.getNumberOfLayers();
            Drawable drawable;
            Rect bounds;


            for(int i=0;i<numberOfLayers;i++){//for each layer
                drawable=layerDrawable.getDrawable(i);
                bounds=drawable.getBounds();
                bounds.top=layerDrawable.getLayer(i).getTopInset();
                bounds.left=layerDrawable.getLayer(i).getLeftInset();
                if(drawable.getIntrinsicHeight()<bounds.height()){
                    bounds.bottom=drawable.getIntrinsicHeight()+layerDrawable.getLayer(i).getTopInset();

                }
                if(drawable.getIntrinsicWidth()<bounds.width()){
                    bounds.right=drawable.getIntrinsicWidth()+layerDrawable.getLayer(i).getLeftInset();
                }
            }
            return true;
        }
    });

MyLayerDrawable, ; , , .

xml:

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
    android:height="5dp"
    android:gravity="center_vertical"
    android:left="5dp"
    android:top="8dp">
    <shape android:shape="rectangle">
        <size
            android:width="50dp"
            android:height="5dp" />
        <solid android:color="#125572" />
    </shape>
</item>

<item
android:width="20dp"
android:height="20dp">
<shape android:shape="oval">
    <solid android:color="#125572" />
    <size
        android:width="20dp"
        android:height="20dp" />
</shape>
</item>


</layer-list>

, android: top = "8dp" android: gravity = "center_vertical".

:

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ImageView iv=(ImageView)findViewById(R.id.imageView);
    MyLayerDrawable myLayerDrawable=MyLayerDrawable.Builder.build(getApplicationContext(),R.drawable.layer_d_example);
    MyImageViewPatch myImageViewPatch=new MyImageViewPatch(iv);
    myImageViewPatch.setImageMyLayerDrawable(myLayerDrawable);

}

}

github. : https://github.com/marcosbses/my_layout_drawable.git