Android沉浸式实现（记录）

沉浸式先看效果

直接上代码

Android manifest文件

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 android:theme="@style/Theme.AppCompat.NoActionBar"

布局文件

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<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#ffad"
    tools:context=".MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

Java MainActivity.class文件

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package com.tanksu.myapplication

import android.graphics.Color
import android.os.Build
import android.os.Bundle
import android.view.View
import android.view.Window
import android.view.WindowManager
import androidx.appcompat.app.ActionBar
import androidx.appcompat.app.AppCompatActivity

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        //不要设置！不要设置！不要设置！
//        getWindow().setFlags(
//            WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN)
//        requestWindowFeature(Window.FEATURE_NO_TITLE)
        setContentView(R.layout.activity_main)
//        setImmersion(window=window,supprotActionBar=supportActionBar)
        setFullScreen2(window)
    }

    public fun setFullScreen(window: Window, actionBar: ActionBar?) {
        if (Build.VERSION.SDK_INT >= 21) {
            val decorView = window.decorView
            val option = View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN or View.SYSTEM_UI_FLAG_LAYOUT_STABLE
            decorView.systemUiVisibility = option
            window.statusBarColor = Color.TRANSPARENT
        }
        actionBar?.hide()
    }

    private fun setFullScreen2(window: Window) {
        window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS)
        window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)
        var systemUiVisibility = window.decorView.systemUiVisibility
        systemUiVisibility =
            systemUiVisibility or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN or View.SYSTEM_UI_FLAG_LAYOUT_STABLE
        window.decorView.systemUiVisibility = systemUiVisibility
        window.statusBarColor = Color.TRANSPARENT
        setStateBarTextColor(window, false)
    }

    private fun setStateBarTextColor(window: Window, light: Boolean) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            var systemUiVisibility = window.decorView.systemUiVisibility
            systemUiVisibility = if (light) { //白色文字
                systemUiVisibility and View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR.inv()
            } else { //黑色文字
                systemUiVisibility or View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR
            }
            window.decorView.systemUiVisibility = systemUiVisibility
        }
    }

}

注意点