// Initialte ScalableLayout instance with 400 width and 200 height. 
// It's relative unit. It's not pixel or dp unit.
ScalableLayout sl = new ScalableLayout(this, 400, 200);


// Gonna place a TextView instance inside ScalableLayout instance. 
TextView tv = new TextView(this);

// Placing a TextView with following parameters. left: 20, top: 40, width: 100, height: 30.  
// You can place it very easily. 
// It would place and scale automatically according to the size of its parent ScalableLayout.
sl.addView(tv, 20f, 40f, 100f, 30f);

// Set the text size of TextView as 20. It would scale automatically.
sl.setScale_TextSize(tv, 20f);

// All the original methods of TextView works properly. 
tv.setText("test");
tv.setBackgroundColor(Color.YELLOW);


// Gonna place a ImageView instance inside ScalableLayout instance. 
ImageView iv = new ImageView(this);

// Placing a ImageView with following parameters. left: 200, top: 30, width: 50, height: 50.  
// You can place it very easily. 
// It would place and scale automatically according to the size of its parent ScalableLayout.
sl.addView(iv, 200f, 30f, 50f, 50f);

// All the original methods of ImageView works properly of course. 
iv.setImageResource(R.drawable.ic_launcher);

<com.jnm.android.widget.ScalableLayout
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:background="@android:color/darker_gray"
  android:layout_above="@+id/main_textview"
  sl:scale_base_width="400"
  sl:scale_base_height="200"
  >
  <TextView 
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    sl:scale_left="20"
    sl:scale_top="40"
    sl:scale_width="100"
    sl:scale_height="30"
    sl:scale_textsize="20"
    android:text="@string/hello_world" 
    android:textColor="@android:color/white"
    android:background="@android:color/black"
    />
  <ImageView 
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    sl:scale_left="200"
    sl:scale_top="30"
    sl:scale_width="50"
    sl:scale_height="50"
    android:src="@drawable/ic_launcher"
    />
</com.jnm.android.widget.ScalableLayout>