public SwipeBackLayout(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs);
mDragHelper = ViewDragHelper.create(this, new ViewDragCallback());
TypedArray a =
context.obtainStyledAttributes(
attrs, R.styleable.SwipeBackLayout, defStyle, R.style.SwipeBackLayout);
int edgeSize = a.getDimensionPixelSize(R.styleable.SwipeBackLayout_edge_size, -1);
if (edgeSize > 0) setEdgeSize(edgeSize);
int mode = EDGE_FLAGS[a.getInt(R.styleable.SwipeBackLayout_edge_flag, 0)];
setEdgeTrackingEnabled(mode);
int shadowLeft =
a.getResourceId(R.styleable.SwipeBackLayout_shadow_left, R.drawable.shadow_left);
int shadowRight =
a.getResourceId(R.styleable.SwipeBackLayout_shadow_right, R.drawable.shadow_right);
int shadowBottom =
a.getResourceId(R.styleable.SwipeBackLayout_shadow_bottom, R.drawable.shadow_bottom);
setShadow(shadowLeft, EDGE_LEFT);
setShadow(shadowRight, EDGE_RIGHT);
setShadow(shadowBottom, EDGE_BOTTOM);
a.recycle();
final float density = getResources().getDisplayMetrics().density;
final float minVel = MIN_FLING_VELOCITY * density;
mDragHelper.setMinVelocity(minVel);
}
/**
* Set a drawable used for edge shadow.
*
* @param resId Resource of drawable to use
* @param edgeFlags Combination of edge flags describing the edge to set
* @see #EDGE_LEFT
* @see #EDGE_RIGHT
* @see #EDGE_BOTTOM
*/
public void setShadow(int resId, int edgeFlag) {
setShadow(getResources().getDrawable(resId), edgeFlag);
}