shuanghua

public static int dpToPx(float dp, Context context) {
    return dpToPx(dp, context.getResources());
}

public static int dpToPx(float dp, Resources resources) {
    float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, resources.getDisplayMetrics());
    return (int) px;
}

shuanghua

println("HomeFragment.javaClass.simpleName = ${HomeFragment.javaClass.simpleName}2")// = Companion

println("HomeFragment::class.java.simpleName = ${HomeFragment::class.java.simpleName}1")// = 类名
println("homeFragment.javaClass.simpleName = ${homeFragment.javaClass.simpleName}3")// = 类名
println("homeFragment::javaClass.simpleName = ${homeFragment::javaClass.simpleName}5")// = 类名

println("homeFragment.javaClass.Name = ${homeFragment.javaClass.name}4")// = 包名.类名
println("homeFragment::class.java.Name = ${homeFragment::class.java.name}6")// = 包名.类名

shuanghua

<application
        <!--适配7.0+拍照返回 Start-->
        <provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="${applicationId}.fileProvider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/provider_path" />

shuanghua

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <!-- Pressed state -->
    <item
        android:state_enabled="true"
        android:state_pressed="true">
        <set>
            <objectAnimator

shuanghua

方式1：
var resourceId = resources.getIdentifier("status_bar_height", "dimen", "android")
//修改高度
return resources.getDimensionPixelSize(resourceId)

方式2：
myView.setOnApplyWindwoInsetListener{view,insets -> 
  val statusBarSize = insets.systemWindowInsetTop
  return insets
}

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/*
 *  Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

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val imm = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
imm.hideSoftInputFromWindow(view.windowToken, 0)

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// Project/keystore//keystore/xxxxxx.jks
// Project/keystore//keystore.properties

// < keystore.properties 内容> :
//      storePassword=xxxxxxx
//      keyPassword=xxxxxxx
//      keyAlias=xxxxxxx
//      storeFile=/keystore/xxxxxx.jks

import org.jetbrains.kotlin.konan.properties.Properties

shuanghua

安装 ufw

sudo apt install ufw

sudo ufw allow OpenSSH                         //让 ufw 允许 ssh 连接，避免后续连接不上 vps

如果SSH服务器 ssh 登录的端口不是 22 ，则还必须需要打开该端口。

shuanghua

下载 caddy2

去 caddy2 官方 github 下载和 Linux 系统对应的可执行文件 https://github.com/caddyserver/caddy/releases 尽可能下载最新的版本，因为 bug 少，下载完成后并移动到 /usr/bin/ 下 （如果你有能力也可以下载源码进行编译安装）

Caddyfile 有两种配置写法

• 第一种：

{
	experimental_http3
}