Question

我要求foreach在每个屏幕上都找到多屏设置上的主屏幕，然后我尝试设置一个列表以供其他用途来设置单独的壁纸，例如wallpaper1-3是假的，而wallpaper 4是真实的主屏幕

//到目前为止，这就是我的工作，并且有效

onCreate((snapshot,context)=>{...} // works fine
onWrite((snapshot,context)=>{...} // did not work

使用System.Runtime.InteropServices; 使用System.Windows.Forms;

命名空间SetDesktopBackground { 静态类程序 { [DllImport（“ user32.dll”，CharSet = CharSet.Auto）] 私有静态外部int SystemParametersInfo（int uAction， int uParam，字符串lpvParam，int fuWinIni）；


// Take the text parameter passed to this HTTP endpoint and insert it into the
// Realtime Database under the path /log/:pushId/original
// <host>/pushLog?text=
exports.pushLog=functions.https
.onRequest(async(req,res)=>{
  // Grab the text parameter.
  const original = req.query.text;
  // Push the new log into the Realtime Database using the Firebase Admin SDK.
  const snapshot = await admin.database().ref('/log').push({original: original});
  res.status(200).send(
    `<!doctype html><head><title>pushLog</title></head><body>
      <a href="${snapshot.ref.toString()}" target="_blank">${original} was saved</a>
    </body></html>`
  );
});

// Listens for new log added to /log/:pushId/original and creates an
// uppercase version of the log to /log/:pushId/uppercase
exports.db_uppercaseLog=functions.database
.ref('/log/{pushId}/original')
.onWrite((snapshot,context)=>{
  // Grab the current value of what was written to the Realtime Database.
  const original = snapshot.val();
  const uppercase = original.toUpperCase();
  // You must return a Promise when performing asynchronous tasks inside a Functions such as
  // writing to the Firebase Realtime Database.
  // Setting an "uppercase" sibling in the Realtime Database returns a Promise.
  return snapshot.ref.parent.child('uppercase').set(uppercase);
});

}

//这是控制台中的结果

屏幕\。\ DISPLAY1 初级错误墙纸1 屏幕\。\ DISPLAY2 初级错误 Wallpaper2 屏幕\。\ DISPLAY3 原真墙纸3 屏幕\。\ DISPLAY4 初级错误 Wallpaper4

但我想将输出Wallpaper（number）用于其他工作，但我不知道如何使用它，例如错误清单墙纸1 Wallpaper2 Wallpaper4

真实列表 Wallpaper3

foreach设置列表也许我不知道

0 个答案: