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Android Studio实现简易音乐播放器(期末作业)
项目演示(视频中会出现黑屏是手机录像输入密码时防止密码泄露而导致的,并不是程序问题) video02 登录注册代码和页面在上一篇文章,地址为:http://t.csdnimg.cn/sgdba 在res目录下新建一个文件夹raw,然后自己将准备好的音频文件复制粘贴到raw文件夹下 activity_music.xml布局文件 <?xml version="1.0" encoding="utf-8"?> <LinearLayout 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:id="@+id/layout" android:layout_width="match_parent" android:layout_height="match_parent"...
【Android+物联网】Android封装MQTT连接阿里云物联网平台-CSDN博客
前言: 亲测可行,本文实现Android封装MQTT连接阿里云物联网平台。将MQTT协议和连接阿里云平台的操作通过Android studio写入APP中,并简单设计UI。实现手机APP远程控制单片机LED灯亮灭的功能。 关于《Android软件开发》,见如下专栏 https://blog.csdn.net/m0_61712829/category_12455686.html?spm=1001.2014.3001.5482 关于《完整实现STM32+ESP8266+MQTT+阿里云+APP》,见如下专栏 https://blog.csdn.net/m0_61712829/category_12545281.html?spm=1001.2014.3001.5482 源码可于上方资源绑定栏下载。 1.下载mqtt.jar包 下载链接:Index of /repositories/paho-releases/org/eclipse/paho...
图片的编码存储与解码输出(基于Android将图片转Base64编码后再次解码会导致图片失真的解决办法)_base64图片解码-CSDN博客
Android将经Bsae64编码后的图片存储到MySQL,并解码输出查看(问题:图片失真) 链接:https://pan.baidu.com/s/1hvVupGcCf1f41fizF08SNg?pwd=9988 提取码:9988 部分源码: package com.example.testandroidmysqlphplogin; import androidx.appcompat.app.AppCompatActivity; import android.annotation.SuppressLint; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Bundle; import android.os.Message; import android.text.TextUtils; import android.text.method.ScrollingMovementMethod; import android.util.Base64;...
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