转自
写三个构造函数就OK了:
public
class
ExtendedClass
extends
Button {
public
ExtendedClass(Context context) {
super( context, attrs );
}
public
ExtendedClass(Context context, AttributeSet attrs) {
super( context, attrs );
}
public
ExtendedClass(Context context, AttributeSet attrs, int defStyle) {
super( context, attrs, defStyle );
}
}