android实现沉浸栏效果主要有两种方案

1.设置状态栏的背景色跟标题栏的背景色一样

2.将布局顶到状态栏上面（适用于图片背景）

看效果：

第一种实现方案，附上代码

package com.ikuaibaike.qishou.kuaibaike.utils;

import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Build;
import android.view.View;
import android.view.ViewGroup;



public class StatusBarCompat {

    private static final int INVALID_VAL = -1;
    private static final int COLOR_DEFAULT = Color.parseColor("#20000000");

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public static void compat(Activity activity, int statusColor)
    {

        //当前手机版本为5.0及以上
        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;
            ViewGroup contentView = (ViewGroup) activity.findViewById(android.R.id.content);
            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);
            contentView.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;
    }

}

对于很多页面都是一样的，就在baseActivity加上一行代码就行

第二种实现方式：可以在代码中实现，也可以在java代码中实现

xml:在根布局加上android:fitsSystemWindows="true"

java代码：oncreate()中写

 /**
     * 隐藏状态栏
     * @param context
     */
    public static void hideStatusLan(Activity context){
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            context.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
            context.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
        }
    }