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ViewUtils.java

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import android.graphics.drawable.Drawable;

import android.os.Build;

import android.view.View;

public class ViewUtils {

/**

* 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;

}

}