android快速实现沉浸式

android实现沉浸式之前一直没有这方面的需求，也一直没有做，今天做了一下写了个工具类，分享给大家，废话不多说直接上代码。

package 自己的包名;import android.app.Activity;import android.content.Context;import android.graphics.Color;import android.os.Build;import android.view.View;import android.view.ViewGroup;import android.view.Window;import android.view.WindowManager;/************************************************************ * Author: ssc * Date： 2017/9/29 * Version: 1.0 * Description:沉浸式状态栏工具类 * History: *          ***********************************************************/public class StatusBarCompat {    private static final int INVALID_VAL = -1;    private static final int COLOR_DEFAULT = Color.parseColor("#20000000");    public static void compat(Activity activity, int statusColor) {        compat(activity, statusColor, false);    }    public static void compat(Activity activity, int statusColor, boolean isFitsSystemWindows) {        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {            int flagTranslucentStatus = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;            int flagTranslucentNavigation = WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {                //5.x开始需要把颜色设置透明，否则导航栏会呈现系统默认的浅灰色                Window window = activity.getWindow();                View decorView = window.getDecorView();                //两个 flag 要结合使用，表示让应用的主体内容占用系统状态栏的空间                int option = View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN                        | View.SYSTEM_UI_FLAG_LAYOUT_STABLE;                decorView.setSystemUiVisibility(option);                window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);                window.setStatusBarColor(Color.TRANSPARENT);                //导航栏颜色也可以正常设置//                window.setNavigationBarColor(Color.TRANSPARENT);            } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {                Window window = activity.getWindow();                WindowManager.LayoutParams attributes = window.getAttributes();                attributes.flags |= flagTranslucentStatus;                window.setAttributes(attributes);            }        }        //设置 paddingTop        //当前手机版本为5.0及以上        ViewGroup rootView = (ViewGroup) activity.getWindow().getDecorView().findViewById(android.R.id.content);        if (!isFitsSystemWindows) {            rootView.setPadding(0, getStatusBarHeight(activity), 0, 0);        } else {            rootView.setPadding(0, 0, 0, 0);        }        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {            if (statusColor != INVALID_VAL) {                activity.getWindow().setStatusBarColor(statusColor);            }            return;        }        //当前手机版本为4.4        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {            int color = COLOR_DEFAULT;            //根布局添加占位状态栏            ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView();            if (statusColor != INVALID_VAL) {                color = statusColor;            }            View statusBarView = new View(activity);            ViewGroup.LayoutParams lp = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,                    getStatusBarHeight(activity));            statusBarView.setBackgroundColor(color);            decorView.addView(statusBarView, lp);        }    }    public static void compat(Activity activity) {        compat(activity, INVALID_VAL);    }    public static int getStatusBarHeight(Context context) {        int result = 0;        int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");        if (resourceId > 0) {            result = context.getResources().getDimensionPixelSize(resourceId);        }        return result;    }}

以上是一个工具类，使用的时候只需要在activity中oncreate方法中调用StatusBarCompat.compat(this,ContextCompat.getColor(this,R.color.common_titlebar_background));

其中第一个参数为当前activity

第二个参数为状态栏的色值

第三个参数是否在布局上添加了android:fitsSystemWindows="true"这个属性，（主要解决输入法弹出内容无法顶起来问题，如果该界面没有该需求这个属性默认false就可以）

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