WheelView.java 文件源码

/**
     * Initialize.
     * 
     * @param context
     */
    private void initialize(Context context) {
        this.setVerticalScrollBarEnabled(false);
        this.setSlotInCenter(true);
        this.setOrientation(VERTICAL);
        this.setGravity(Gravity.CENTER_HORIZONTAL);
        this.setUnselectedAlpha(1.0f);

        // This lead the onDraw() will be called.
        this.setWillNotDraw(false);

        // The selector rectangle drawable.
        this.mSelectorDrawable = getContext().getResources().getDrawable(R.drawable.wheel_val);
        this.mTopShadow = new GradientDrawable(Orientation.TOP_BOTTOM, SHADOWS_COLORS);
        this.mBottomShadow = new GradientDrawable(Orientation.BOTTOM_TOP, SHADOWS_COLORS);

        // The default background.
//        this.setBackgroundResource(R.drawable.wheel_bg);

        // Disable the sound effect default.
        this.setSoundEffectsEnabled(true);
    }