lua制作flash钢琴

效果预览

apk使用manaluax打包，源码在文末提供。

应用体验下载地址：https://www.magicalapk.com/appview?id=1705213059764

源码

布局代码


{
   LinearLayout;
   gravity="center";
   layout_height="fill";
   orientation="vertical";
   layout_width="fill";
   {
      LinearLayout;
      layout_weight="120";
      layout_width="match_parent";
      {
         ScrollView;
         layout_width="match_parent";
         layout_height="match_parent";
         {
            TextView;
            textIsSelectable=true;
            layout_height="match_parent";
            id="opern";
            layout_width="match_parent";
         };
      };
   };
   {
      LinearLayout;
      layout_weight="1";
      layout_width="match_parent";
      orientation="vertical";
      {
         LinearLayout;
         orientation="horizontal";
         layout_width="match_parent";
         {
            Button;
            backgroundColor="#FFFFFF";
            id="A";
            singleLine="true";
            layout_weight="1";
            text="A";
            textColor="#000000";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#000000";
            id="B";
            singleLine="true";
            layout_weight="1";
            text="B";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#FFFFFF";
            id="C";
            singleLine="true";
            layout_weight="1";
            text="C";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#000000";
            id="D";
            singleLine="true";
            layout_weight="1";
            text="D";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#FFFFFF";
            id="E";
            singleLine="true";
            layout_weight="1";
            text="E";
            layout_margin="10px";
         };
      };
      {
         LinearLayout;
         orientation="horizontal";
         layout_width="match_parent";
         {
            Button;
            backgroundColor="#000000";
            id="F";
            singleLine="true";
            layout_weight="1";
            text="F";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#FFFFFF";
            id="G";
            singleLine="true";
            layout_weight="1";
            text="G";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#000000";
            id="H";
            singleLine="true";
            layout_weight="1";
            text="H";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#FFFFFF";
            id="I";
            singleLine="true";
            layout_weight="1";
            text="I";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#000000";
            id="J";
            singleLine="true";
            layout_weight="1";
            text="J";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
      };
      {
         LinearLayout;
         orientation="horizontal";
         layout_width="match_parent";
         {
            Button;
            backgroundColor="#FFFFFF";
            id="K";
            singleLine="true";
            layout_weight="1";
            text="K";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#000000";
            id="L";
            singleLine="true";
            layout_weight="1";
            text="L";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#FFFFFF";
            id="M";
            singleLine="true";
            layout_weight="1";
            text="M";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#000000";
            id="N";
            singleLine="true";
            layout_weight="1";
            text="N";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#FFFFFF";
            id="O";
            singleLine="true";
            layout_weight="1";
            text="O";
            layout_margin="10px";
         };
      };
      {
         LinearLayout;
         layout_width="match_parent";
         {
            Button;
            backgroundColor="#000000";
            id="P";
            singleLine="true";
            layout_weight="1";
            text="P";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#FFFFFF";
            id="Q";
            singleLine="true";
            layout_weight="1";
            text="Q";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#000000";
            id="RKey";
            singleLine="true";
            layout_weight="1";
            text="R";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#FFFFFF";
            id="S";
            singleLine="true";
            layout_weight="1";
            text="S";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#000000";
            id="T";
            singleLine="true";
            layout_weight="1";
            text="T";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
      };
      {
         LinearLayout;
         layout_width="match_parent";
         {
            Button;
            backgroundColor="#FFFFFF";
            id="U";
            singleLine="true";
            layout_weight="1";
            text="U";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#000000";
            id="V";
            singleLine="true";
            layout_weight="1";
            text="V";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#FFFFFF";
            id="W";
            singleLine="true";
            layout_weight="1";
            text="W";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#000000";
            id="X";
            singleLine="true";
            layout_weight="1";
            text="X";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#FFFFFF";
            id="Y";
            singleLine="true";
            layout_weight="1";
            text="Y";
            layout_margin="10px";
         };
      };
      {
         LinearLayout;
         layout_width="match_parent";
         {
            Button;
            backgroundColor="#000000";
            id="opernOn";
            singleLine="true";
            layout_weight="1";
            text="曲谱开";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#FFFFFF";
            id="opernOff";
            singleLine="true";
            layout_weight="1";
            text="曲谱关";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#000000";
            id="Z";
            singleLine="true";
            layout_weight="1";
            text="Z";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#FFFFFF";
            id="more";
            singleLine="true";
            layout_weight="1";
            text="更多";
            layout_margin="10px";
         };
         {
            Button;
            backgroundColor="#000000";
            id="contact";
            singleLine="true";
            layout_weight="1";
            text="作者QQ";
            textColor="#FFFFFF";
            layout_margin="10px";
         };
      };
   };
};

核心代码

require "import"

import "manalua"

import "layout.main"

import "android.net.Uri"

import "android.content.Intent*"



activity.setContentView(loadlayout(main))



function openfile(path)

   return io.open(path):read("*a")

end



--打开曲谱

opernOn.onClick=function()

   local path=activity.getLuaDir().."/res/lyrics/lyric.txt"

   local txt=openfile(path)

   opern.setText(txt)

end



-- 关闭曲谱

opernOff.onClick=function()

   opern.setText("")

end



-- 播放琴音

function playMusic(letter)

   filepath=activity.getLuaDir().."/res/sound/piano"..tostring(string.byte(letter)-64)..".mp3"

   import "android.media.MediaPlayer"

   mediaPlayer = MediaPlayer()

   --初始化参数

   mediaPlayer.reset()

   --设置播放资源

   mediaPlayer.setDataSource(filepath)

   --开始缓冲资源

   mediaPlayer.prepare()

   --缓冲完成的监听

   mediaPlayer.setOnPreparedListener(MediaPlayer.OnPreparedListener{

      onPrepared=function(mediaPlayer)

         mediaPlayer.start()

      end

   })



   --播放完成回调

   mediaPlayer.setOnCompletionListener(MediaPlayer.OnCompletionListener{

      onCompletion=function(mediaPlayer)

         mediaPlayer.release()

      end

   })

end




local btntbl={A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,RKey,S,T,U,V,W,X,Y,Z}

-- 循环设置监听事件

for i=65,90 do

   local btn=btntbl[i-64]

   btn.onClick=function()

      playMusic(string.char(i))

   end

end




function str2tbl(str)

   local chartbl={}

   for i=1,#str do

      local char=string.sub(str,i,i)

      table.insert(chartbl,char)

   end

   return chartbl

end




contact.onClick=function()

   url="mqqwpa://im/chat?chat_type=wpa&uin=512357657"

   activity.startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(url)))

end



more.onClick=function()

   url="https://s.pdb2.com/l/doalEcC5IPc3f9qf"

   viewIntent = Intent("android.intent.action.VIEW",Uri.parse(url))

   activity.startActivity(viewIntent)

end