How To Draw Using An Xml Layout In Android

I am trying to work through an android example given on the developers' page. It gives 2 ways of drawing on a canvas. The first way is to use a class called CustomDrawableView, whi

Solution 1:

If the tutorial is correct then the only change you make is to add that constructor. You probably want to move the drawable init code to a separate method.

public CustomDrawableView(Context context, AttributeSet attrs) {
    super(context, attrs);
    initDrawable();
}

The xml

<com.example.shapedrawable.CustomDrawableView
   android:id="+id/custom_drawable_view"
   android:layout_width="fill_parent"     
    android:layout_height="wrap_content"     
/>

And you can obtain the view like this.

CustomDrawableView mCustomDrawableView;

protectedvoidonCreate(Bundle savedInstanceState) {    
    super.onCreate(savedInstanceState);          
    setContentView(R.layout.main); // assuming your layout is named main.xml
    mCustomDrawableView = (CustomDrawableView) findViewById(R.id.custom_drawable_view);
}

Solution 2:

public CustomDrawableView(Context v,AttributeSet as){ super(v,as); drawShape(as); } public void drawShape(AttributeSet ast) { int x =0; int y=0 ; int width=0; int height=0 ;

            x=Integer.parseInt(ast.getAttributeValue(null, "x"));       
    y=Integer.parseInt(ast.getAttributeValue(null, "y"));
    width=Integer.parseInt(ast.getAttributeValue(null, "width"));
    height= Integer.parseInt(ast.getAttributeValue(null, "height"));

    mDrawable = newShapeDrawable(newOvalShape());
    mDrawable.getPaint().setColor(0xff74AC23);
    mDrawable.setBounds(x, y, x + width, y + height);

} }

MainActivity.java{ CustomDrawableView mCustomDrawableView;

@OverridepublicvoidonCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
 }
publicView.OnClickListener cc = (newView.OnClickListener() {
    publicvoidonClick(View view) {
                    setContentView(R.id.myid);}
       });       

} This works fine..(Not so sure whether this is the best way to do it...)