45.Android ViewUtil

45.Android ViewUtil

public class ViewUtil {

    /** * Set view alpha * 设置透明度 * * @param view view * @param alpha alpha value */
    public static void setAlpha(View view, int alpha) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            view.setAlpha(alpha / 255.0f);
        } else {
            Drawable drawable = view.getBackground();
            if (drawable != null) {
                drawable.setAlpha(alpha);
            }
        }
    }

    /** * 根据Android系统版本，调用版本API中的设置View背景的方法 * According to the Android version, calls the Settings in the View background method of version API * * @param view view * @param drawable drawable */
    public static void setViewBackgroundDrawable(View view, Drawable drawable) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
            view.setBackground(drawable);
        } else {
            view.setBackgroundDrawable(drawable);
        }
    }

    /** * 获取View在当前窗口内的绝对坐标 * obtain the absolute coordinates to obtain the View within the current window * * @param view view * @return int[] x y */
    public static int[] getLocationInWindow(View view) {
        int[] location = new int[2];
        view.getLocationInWindow(location);
        return location;
    }

    /** * 获取View在整个屏幕内的绝对坐标 * obtain access to View the absolute coordinates of within the entire screen * * @param view view * @return int[] x y */
    public static int[] getLocationOnScreen(View view) {
        int[] location = new int[2];
        view.getLocationOnScreen(location);
        return location;
    }

}