栏相关→BarUtils

	import android.annotation.TargetApi;
	import android.app.Activity;
	import android.content.Context;
	import android.graphics.Color;
	import android.os.Build;
	import android.support.v4.widget.DrawerLayout;
	import android.util.AttributeSet;
	import android.util.TypedValue;
	import android.view.View;
	import android.view.ViewGroup;
	import android.view.Window;
	import android.view.WindowManager;
	import android.widget.LinearLayout;
	import java.lang.reflect.Method;
	/**
	* <pre>
	* author: Blankj
	* blog : http://blankj.com
	* time : 2016/9/23
	* desc : 栏相关工具类
	* </pre>
	*/
	public class BarUtils {
	private BarUtils() {
	throw new UnsupportedOperationException("u can't instantiate me...");
	}
	public static class StatusBarView extendsView {
	public StatusBarView(Contextcontext, AttributeSet attrs) {
	super(context, attrs);
	}
	public StatusBarView(Contextcontext) {
	super(context);
	}
	}
	public static final int DEFAULT_STATUS_BAR_ALPHA= 112;
	/**
	* 设置状态栏颜色
	*
	* @param activity 需要设置的 activity
	* @param color 状态栏颜色值
	*/
	public static void setColor(Activity activity, int color) {
	setColor(activity, color, DEFAULT_STATUS_BAR_ALPHA);
	}
	/**
	* 设置状态栏颜色
	*
	* @param activity 需要设置的activity
	* @param color 状态栏颜色值
	* @param statusBarAlpha 状态栏透明度
	*/
	public static void setColor(Activity activity, int color, int statusBarAlpha) {
	if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.LOLLIPOP) {
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
	activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
	activity.getWindow().setStatusBarColor(calculateStatusColor(color, statusBarAlpha));
	} else if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.KITKAT) {
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
	ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView();
	int count = decorView.getChildCount();
	if (count > 0 && decorView.getChildAt(count- 1) instanceof StatusBarView) {
	decorView.getChildAt(count- 1).setBackgroundColor(calculateStatusColor(color, statusBarAlpha));
	} else {
	StatusBarView statusView = createStatusBarView(activity, color, statusBarAlpha);
	decorView.addView(statusView);
	}
	setRootView(activity);
	}
	}
	/**
	* 为滑动返回界面设置状态栏颜色
	*
	* @param activity 需要设置的activity
	* @param color 状态栏颜色值
	*/
	public static void setColorForSwipeBack(Activityactivity, int color) {
	setColorForSwipeBack(activity, color, DEFAULT_STATUS_BAR_ALPHA);
	}
	/**
	* 为滑动返回界面设置状态栏颜色
	*
	* @param activity 需要设置的activity
	* @param color 状态栏颜色值
	* @param statusBarAlpha 状态栏透明度
	*/
	public static void setColorForSwipeBack(Activityactivity, int color, int statusBarAlpha) {
	if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.KITKAT) {
	ViewGroup contentView = ((ViewGroup) activity.findViewById(android.R.id.content));
	contentView.setPadding(0, getStatusBarHeight(activity),0, 0);
	contentView.setBackgroundColor(calculateStatusColor(color, statusBarAlpha));
	setTransparentForWindow(activity);
	}
	}
	/**
	* 设置状态栏纯色 不加半透明效果
	*
	* @param activity 需要设置的 activity
	* @param color 状态栏颜色值
	*/
	public static void setColorNoTranslucent(Activityactivity, int color) {
	setColor(activity, color, 0);
	}
	/**
	* 设置状态栏颜色(5.0以下无半透明效果,不建议使用)
	*
	* @param activity 需要设置的 activity
	* @param color 状态栏颜色值
	*/
	@Deprecated
	public static void setColorDiff(Activityactivity, int color) {
	if (Build.VERSION.SDK_INT< Build.VERSION_CODES.KITKAT) {
	return;
	}
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
	// 生成一个状态栏大小的矩形
	ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView();
	int count = decorView.getChildCount();
	if (count > 0 && decorView.getChildAt(count- 1) instanceof StatusBarView) {
	decorView.getChildAt(count- 1).setBackgroundColor(color);
	} else {
	StatusBarView statusView = createStatusBarView(activity, color);
	decorView.addView(statusView);
	}
	setRootView(activity);
	}
	/**
	* 使状态栏半透明
	* <p>
	* 适用于图片作为背景的界面,此时需要图片填充到状态栏
	*
	* @param activity 需要设置的activity
	*/
	public static void setTranslucent(Activityactivity) {
	setTranslucent(activity, DEFAULT_STATUS_BAR_ALPHA);
	}
	/**
	* 使状态栏半透明
	* <p>
	* 适用于图片作为背景的界面,此时需要图片填充到状态栏
	*
	* @param activity 需要设置的activity
	* @param statusBarAlpha 状态栏透明度
	*/
	public static void setTranslucent(Activityactivity, int statusBarAlpha) {
	if (Build.VERSION.SDK_INT< Build.VERSION_CODES.KITKAT) {
	return;
	}
	setTransparent(activity);
	addTranslucentView(activity, statusBarAlpha);
	}
	/**
	* 针对根布局是 CoordinatorLayout, 使状态栏半透明
	* <p>
	* 适用于图片作为背景的界面,此时需要图片填充到状态栏
	*
	* @param activity 需要设置的activity
	* @param statusBarAlpha 状态栏透明度
	*/
	public static void setTranslucentForCoordinatorLayout(Activityactivity, int statusBarAlpha) {
	if (Build.VERSION.SDK_INT< Build.VERSION_CODES.KITKAT) {
	return;
	}
	transparentStatusBar(activity);
	addTranslucentView(activity, statusBarAlpha);
	}
	/**
	* 设置状态栏全透明
	*
	* @param activity 需要设置的activity
	*/
	public static void setTransparent(Activityactivity) {
	if (Build.VERSION.SDK_INT< Build.VERSION_CODES.KITKAT) {
	return;
	}
	transparentStatusBar(activity);
	setRootView(activity);
	}
	/**
	* 使状态栏透明(5.0以上半透明效果,不建议使用)
	* <p>
	* 适用于图片作为背景的界面,此时需要图片填充到状态栏
	*
	* @param activity 需要设置的activity
	*/
	@Deprecated
	public static void setTranslucentDiff(Activityactivity) {
	if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.KITKAT) {
	// 设置状态栏透明
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
	setRootView(activity);
	}
	}
	/**
	* 为DrawerLayout 布局设置状态栏变色
	*
	* @param activity 需要设置的activity
	* @param drawerLayout DrawerLayout
	* @param color 状态栏颜色值
	*/
	public static void setColorForDrawerLayout(Activityactivity, DrawerLayout drawerLayout,int color) {
	setColorForDrawerLayout(activity, drawerLayout, color, DEFAULT_STATUS_BAR_ALPHA);
	}
	/**
	* 为DrawerLayout 布局设置状态栏颜色,纯色
	*
	* @param activity 需要设置的activity
	* @param drawerLayout DrawerLayout
	* @param color 状态栏颜色值
	*/
	public static void setColorNoTranslucentForDrawerLayout(Activityactivity, DrawerLayout drawerLayout,int color) {
	setColorForDrawerLayout(activity, drawerLayout, color, 0);
	}
	/**
	* 为DrawerLayout 布局设置状态栏变色
	*
	* @param activity 需要设置的activity
	* @param drawerLayout DrawerLayout
	* @param color 状态栏颜色值
	* @param statusBarAlpha 状态栏透明度
	*/
	public static void setColorForDrawerLayout(Activityactivity, DrawerLayout drawerLayout,int color,
	int statusBarAlpha) {
	if (Build.VERSION.SDK_INT< Build.VERSION_CODES.KITKAT) {
	return;
	}
	if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.LOLLIPOP) {
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
	activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
	activity.getWindow().setStatusBarColor(Color.TRANSPARENT);
	} else {
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
	}
	// 生成一个状态栏大小的矩形
	// 添加 statusBarView 到布局中
	ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0);
	if (contentLayout.getChildCount()> 0 && contentLayout.getChildAt(0)instanceof StatusBarView) {
	contentLayout.getChildAt(0).setBackgroundColor(calculateStatusColor(color, statusBarAlpha));
	} else {
	StatusBarView statusBarView= createStatusBarView(activity, color);
	contentLayout.addView(statusBarView,0);
	}
	// 内容布局不是 LinearLayout 时,设置padding top
	if (!(contentLayoutinstanceof LinearLayout) && contentLayout.getChildAt(1)!= null) {
	contentLayout.getChildAt(1)
	.setPadding(contentLayout.getPaddingLeft(), getStatusBarHeight(activity)+ contentLayout.getPaddingTop(),
	contentLayout.getPaddingRight(), contentLayout.getPaddingBottom());
	}
	// 设置属性
	ViewGroup drawer = (ViewGroup) drawerLayout.getChildAt(1);
	drawerLayout.setFitsSystemWindows(false);
	contentLayout.setFitsSystemWindows(false);
	contentLayout.setClipToPadding(true);
	drawer.setFitsSystemWindows(false);
	addTranslucentView(activity, statusBarAlpha);
	}
	/**
	* 为DrawerLayout 布局设置状态栏变色(5.0以下无半透明效果,不建议使用)
	*
	* @param activity 需要设置的activity
	* @param drawerLayout DrawerLayout
	* @param color 状态栏颜色值
	*/
	@Deprecated
	public static void setColorForDrawerLayoutDiff(Activityactivity, DrawerLayout drawerLayout,int color) {
	if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.KITKAT) {
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
	// 生成一个状态栏大小的矩形
	ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0);
	if (contentLayout.getChildCount()> 0 && contentLayout.getChildAt(0)instanceof StatusBarView) {
	contentLayout.getChildAt(0).setBackgroundColor(calculateStatusColor(color,DEFAULT_STATUS_BAR_ALPHA));
	} else {
	// 添加 statusBarView 到布局中
	StatusBarView statusBarView= createStatusBarView(activity, color);
	contentLayout.addView(statusBarView,0);
	}
	// 内容布局不是 LinearLayout 时,设置padding top
	if (!(contentLayoutinstanceof LinearLayout) && contentLayout.getChildAt(1)!= null) {
	contentLayout.getChildAt(1).setPadding(0, getStatusBarHeight(activity), 0,0);
	}
	// 设置属性
	ViewGroup drawer = (ViewGroup) drawerLayout.getChildAt(1);
	drawerLayout.setFitsSystemWindows(false);
	contentLayout.setFitsSystemWindows(false);
	contentLayout.setClipToPadding(true);
	drawer.setFitsSystemWindows(false);
	}
	}
	/**
	* 为 DrawerLayout 布局设置状态栏透明
	*
	* @param activity 需要设置的activity
	* @param drawerLayout DrawerLayout
	*/
	public static void setTranslucentForDrawerLayout(Activityactivity, DrawerLayout drawerLayout) {
	setTranslucentForDrawerLayout(activity, drawerLayout, DEFAULT_STATUS_BAR_ALPHA);
	}
	/**
	* 为 DrawerLayout 布局设置状态栏透明
	*
	* @param activity 需要设置的activity
	* @param drawerLayout DrawerLayout
	* @param statusBarAlpha 透明度
	*/
	public static void setTranslucentForDrawerLayout(Activityactivity, DrawerLayout drawerLayout,int statusBarAlpha) {
	if (Build.VERSION.SDK_INT< Build.VERSION_CODES.KITKAT) {
	return;
	}
	setTransparentForDrawerLayout(activity, drawerLayout);
	addTranslucentView(activity, statusBarAlpha);
	}
	/**
	* 为 DrawerLayout 布局设置状态栏透明
	*
	* @param activity 需要设置的activity
	* @param drawerLayout DrawerLayout
	*/
	public static void setTransparentForDrawerLayout(Activityactivity, DrawerLayout drawerLayout) {
	if (Build.VERSION.SDK_INT< Build.VERSION_CODES.KITKAT) {
	return;
	}
	if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.LOLLIPOP) {
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
	activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
	activity.getWindow().setStatusBarColor(Color.TRANSPARENT);
	} else {
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
	}
	ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0);
	// 内容布局不是 LinearLayout 时,设置padding top
	if (!(contentLayoutinstanceof LinearLayout) && contentLayout.getChildAt(1)!= null) {
	contentLayout.getChildAt(1).setPadding(0, getStatusBarHeight(activity), 0,0);
	}
	// 设置属性
	ViewGroup drawer = (ViewGroup) drawerLayout.getChildAt(1);
	drawerLayout.setFitsSystemWindows(false);
	contentLayout.setFitsSystemWindows(false);
	contentLayout.setClipToPadding(true);
	drawer.setFitsSystemWindows(false);
	}
	/**
	* 为 DrawerLayout 布局设置状态栏透明(5.0以上半透明效果,不建议使用)
	*
	* @param activity 需要设置的activity
	* @param drawerLayout DrawerLayout
	*/
	@Deprecated
	public static void setTranslucentForDrawerLayoutDiff(Activityactivity, DrawerLayout drawerLayout) {
	if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.KITKAT) {
	// 设置状态栏透明
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
	// 设置内容布局属性
	ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0);
	contentLayout.setFitsSystemWindows(true);
	contentLayout.setClipToPadding(true);
	// 设置抽屉布局属性
	ViewGroup vg = (ViewGroup) drawerLayout.getChildAt(1);
	vg.setFitsSystemWindows(false);
	// 设置 DrawerLayout 属性
	drawerLayout.setFitsSystemWindows(false);
	}
	}
	/**
	* 为头部是 ImageView 的界面设置状态栏全透明
	*
	* @param activity 需要设置的activity
	* @param needOffsetView 需要向下偏移的 View
	*/
	public static void setTransparentForImageView(Activityactivity, View needOffsetView) {
	setTranslucentForImageView(activity, 0, needOffsetView);
	}
	/**
	* 为头部是 ImageView 的界面设置状态栏透明(使用默认透明度)
	*
	* @param activity 需要设置的activity
	* @param needOffsetView 需要向下偏移的 View
	*/
	public static void setTranslucentForImageView(Activityactivity, View needOffsetView) {
	setTranslucentForImageView(activity, DEFAULT_STATUS_BAR_ALPHA, needOffsetView);
	}
	/**
	* 为头部是 ImageView 的界面设置状态栏透明
	*
	* @param activity 需要设置的activity
	* @param statusBarAlpha 状态栏透明度
	* @param needOffsetView 需要向下偏移的 View
	*/
	public static void setTranslucentForImageView(Activityactivity, int statusBarAlpha,View needOffsetView) {
	if (Build.VERSION.SDK_INT< Build.VERSION_CODES.KITKAT) {
	return;
	}
	setTransparentForWindow(activity);
	addTranslucentView(activity, statusBarAlpha);
	if (needOffsetView != null) {
	ViewGroup.MarginLayoutParams layoutParams= (ViewGroup.MarginLayoutParams) needOffsetView.getLayoutParams();
	layoutParams.setMargins(0, getStatusBarHeight(activity),0, 0);
	}
	}
	/**
	* 为 fragment 头部是 ImageView 的设置状态栏透明
	*
	* @param activity fragment 对应的 activity
	* @param needOffsetView 需要向下偏移的 View
	*/
	public static void setTranslucentForImageViewInFragment(Activityactivity, View needOffsetView) {
	setTranslucentForImageViewInFragment(activity, DEFAULT_STATUS_BAR_ALPHA, needOffsetView);
	}
	/**
	* 为 fragment 头部是 ImageView 的设置状态栏透明
	*
	* @param activity fragment 对应的 activity
	* @param needOffsetView 需要向下偏移的 View
	*/
	public static void setTransparentForImageViewInFragment(Activityactivity, View needOffsetView) {
	setTranslucentForImageViewInFragment(activity, 0, needOffsetView);
	}
	/**
	* 为 fragment 头部是 ImageView 的设置状态栏透明
	*
	* @param activity fragment 对应的 activity
	* @param statusBarAlpha 状态栏透明度
	* @param needOffsetView 需要向下偏移的 View
	*/
	public static void setTranslucentForImageViewInFragment(Activityactivity, int statusBarAlpha,View needOffsetView) {
	setTranslucentForImageView(activity, statusBarAlpha, needOffsetView);
	if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.KITKAT&& Build.VERSION.SDK_INT< Build.VERSION_CODES.LOLLIPOP) {
	clearPreviousSetting(activity);
	}
	}
	///////////////////////////////////////////////////////////////////////////////////
	@TargetApi(Build.VERSION_CODES.KITKAT)
	private static void clearPreviousSetting(Activityactivity) {
	ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView();
	int count = decorView.getChildCount();
	if (count > 0 && decorView.getChildAt(count- 1) instanceof StatusBarView) {
	decorView.removeViewAt(count- 1);
	ViewGroup rootView = (ViewGroup) ((ViewGroup) activity.findViewById(android.R.id.content)).getChildAt(0);
	rootView.setPadding(0,0, 0, 0);
	}
	}
	/**
	* 添加半透明矩形条
	*
	* @param activity 需要设置的 activity
	* @param statusBarAlpha 透明值
	*/
	private static void addTranslucentView(Activityactivity, int statusBarAlpha) {
	ViewGroup contentView = (ViewGroup) activity.findViewById(android.R.id.content);
	if (contentView.getChildCount()> 1) {
	contentView.getChildAt(1).setBackgroundColor(Color.argb(statusBarAlpha,0, 0, 0));
	} else {
	contentView.addView(createTranslucentStatusBarView(activity, statusBarAlpha));
	}
	}
	/**
	* 生成一个和状态栏大小相同的彩色矩形条
	*
	* @param activity 需要设置的 activity
	* @param color 状态栏颜色值
	* @return 状态栏矩形条
	*/
	private static StatusBarViewcreateStatusBarView(Activityactivity, int color) {
	// 绘制一个和状态栏一样高的矩形
	StatusBarView statusBarView= new StatusBarView(activity);
	LinearLayout.LayoutParams params=
	new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, getStatusBarHeight(activity));
	statusBarView.setLayoutParams(params);
	statusBarView.setBackgroundColor(color);
	return statusBarView;
	}
	/**
	* 生成一个和状态栏大小相同的半透明矩形条
	*
	* @param activity 需要设置的activity
	* @param color 状态栏颜色值
	* @param alpha 透明值
	* @return 状态栏矩形条
	*/
	private static StatusBarViewcreateStatusBarView(Activityactivity, int color, int alpha) {
	// 绘制一个和状态栏一样高的矩形
	StatusBarView statusBarView= new StatusBarView(activity);
	LinearLayout.LayoutParams params=
	new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, getStatusBarHeight(activity));
	statusBarView.setLayoutParams(params);
	statusBarView.setBackgroundColor(calculateStatusColor(color, alpha));
	return statusBarView;
	}
	/**
	* 设置根布局参数
	*/
	@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
	private static void setRootView(Activityactivity) {
	ViewGroup rootView = (ViewGroup) ((ViewGroup) activity.findViewById(android.R.id.content)).getChildAt(0);
	rootView.setFitsSystemWindows(true);
	rootView.setClipToPadding(true);
	}
	/**
	* 设置透明
	*/
	private static void setTransparentForWindow(Activityactivity) {
	if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.LOLLIPOP) {
	activity.getWindow().setStatusBarColor(Color.TRANSPARENT);
	activity.getWindow()
	.getDecorView()
	.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
	} else if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.KITKAT) {
	activity.getWindow()
	.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS,WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
	}
	}
	/**
	* 使状态栏透明
	*/
	@TargetApi(Build.VERSION_CODES.KITKAT)
	private static void transparentStatusBar(Activityactivity) {
	if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.LOLLIPOP) {
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
	activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
	activity.getWindow().setStatusBarColor(Color.TRANSPARENT);
	} else {
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
	}
	}
	/**
	* 创建半透明矩形 View
	*
	* @param alpha 透明值
	* @return 半透明 View
	*/
	private static StatusBarViewcreateTranslucentStatusBarView(Activityactivity, int alpha) {
	// 绘制一个和状态栏一样高的矩形
	StatusBarView statusBarView= new StatusBarView(activity);
	LinearLayout.LayoutParams params=
	new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, getStatusBarHeight(activity));
	statusBarView.setLayoutParams(params);
	statusBarView.setBackgroundColor(Color.argb(alpha,0, 0, 0));
	return statusBarView;
	}
	/**
	* 获取状态栏高度
	*
	* @param context context
	* @return 状态栏高度
	*/
	public static int getStatusBarHeight(Contextcontext) {
	int result = -1;
	int resourceId = context.getResources().getIdentifier("status_bar_height","dimen","android");
	if (resourceId > 0) {
	result = context.getResources().getDimensionPixelSize(resourceId);
	}
	return result;
	}
	/**
	* 计算状态栏颜色
	*
	* @param color color值
	* @param alpha alpha值
	* @return 最终的状态栏颜色
	*/
	private static int calculateStatusColor(intcolor, int alpha) {
	float a = 1 - alpha / 255f;
	int red = color >> 16 & 0xff;
	int green = color >> 8 & 0xff;
	int blue = color & 0xff;
	red = (int) (red* a + 0.5);
	green = (int) (green* a + 0.5);
	blue = (int) (blue* a + 0.5);
	return 0xff << 24 | red << 16 | green << 8 | blue;
	}
	/*--------------------------------old--------------------------------*/
	/**
	* 设置透明状态栏（api大于19方可使用）
	* <p>可在Activity的onCreat()中调用</p>
	* <p>需在顶部控件布局中加入以下属性让内容出现在状态栏之下</p>
	* <p>android:clipToPadding="true"</p>
	* <p>android:fitsSystemWindows="true"</p>
	*
	* @param activity activity
	*/
	public static void setTransparentStatusBar(Activityactivity) {
	if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.KITKAT) {
	//透明状态栏
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
	//透明导航栏
	activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
	}
	}
	/**
	* 隐藏状态栏
	* <p>也就是设置全屏，一定要在setContentView之前调用，否则报错</p>
	* <p>此方法Activity可以继承AppCompatActivity</p>
	* <p>启动的时候状态栏会显示一下再隐藏，比如QQ的欢迎界面</p>
	* <p>在配置文件中Activity加属性android:theme="@android:style/Theme.NoTitleBar.Fullscreen"</p>
	* <p>如加了以上配置Activity不能继承AppCompatActivity，会报错</p>
	*
	* @param activity activity
	*/
	public static void hideStatusBar(Activityactivity) {
	activity.requestWindowFeature(Window.FEATURE_NO_TITLE);
	activity.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
	WindowManager.LayoutParams.FLAG_FULLSCREEN);
	}
	/**
	* 判断状态栏是否存在
	*
	* @param activity activity
	* @return {@code true}: 存在<br>{@code false}: 不存在
	*/
	public static boolean isStatusBarExists(Activityactivity) {
	WindowManager.LayoutParams params= activity.getWindow().getAttributes();
	return (params.flags& WindowManager.LayoutParams.FLAG_FULLSCREEN)!= WindowManager.LayoutParams.FLAG_FULLSCREEN;
	}
	/**
	* 获取ActionBar高度
	*
	* @param activity activity
	* @return ActionBar高度
	*/
	public static int getActionBarHeight(Activityactivity) {
	TypedValue tv = new TypedValue();
	if (activity.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true)) {
	return TypedValue.complexToDimensionPixelSize(tv.data, activity.getResources().getDisplayMetrics());
	}
	return 0;
	}
	/**
	* 显示通知栏
	* <p>需添加权限 {@code <uses-permission android:name="android.permission.EXPAND_STATUS_BAR"/>}</p>
	*
	* @param context 上下文
	* @param isSettingPanel {@code true}: 打开设置<br>{@code false}: 打开通知
	*/
	public static void showNotificationBar(Contextcontext, boolean isSettingPanel) {
	String methodName = (Build.VERSION.SDK_INT<= 16) ? "expand"
	: (isSettingPanel ? "expandSettingsPanel": "expandNotificationsPanel");
	invokePanels(context, methodName);
	}
	/**
	* 隐藏通知栏
	* <p>需添加权限 {@code <uses-permission android:name="android.permission.EXPAND_STATUS_BAR"/>}</p>
	*
	* @param context 上下文
	*/
	public static void hideNotificationBar(Contextcontext) {
	String methodName = (Build.VERSION.SDK_INT<= 16) ? "collapse": "collapsePanels";
	invokePanels(context, methodName);
	}
	/**
	* 反射唤醒通知栏
	*
	* @param context 上下文
	* @param methodName 方法名
	*/
	private static void invokePanels(Contextcontext, String methodName) {
	try {
	Object service = context.getSystemService("statusbar");
	Class<?> statusBarManager = Class.forName("android.app.StatusBarManager");
	Method expand = statusBarManager.getMethod(methodName);
	expand.invoke(service);
	} catch (Exception e) {
	e.printStackTrace();
	}
	}
	}