1.檔案一定是要mp3格式(wav檔不行)
2.檔案請放在「Resources」之下,本例為了跟其他資源區分,放在Resources/raw之下,
(有a1.mp3,a2.mp3....)
3.play sound的語法
A.用MediaPlayer:
var player =MediaPlayer.Create(ApplicationContext,Resource.Raw.a1);
player.Start();
B.用RingToneManager:
var uriString="android.resource://" + your_package_name + "/" +Resource.Raw.a1;
var uri=Android.Net.Uri.Parse(uriString);
Ringtone r = RingtoneManager.GetRingtone(ApplicationContext, uri);
r.Play();
----------------------------------------------------
以上,大家加油了!!
AndroidManifest.xml
----------------------------------
...
...
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE" />
-----------------------------------
in android app Activity c# :
---------------------------------
var wifiManager = (WifiManager)GetSystemService(Context.WifiService);
MulticastLock mLock = wifiManager.CreateMulticastLock("lock");
mLock.Acquire();
using (var udpClient = new UdpClient(你要聆聽的port number)) {
var asyncResult = udpClient.BeginReceive(null, null);
var timeToWait = TimeSpan.FromSeconds(30);//30秒,超過就結束
asyncResult.AsyncWaitHandle.WaitOne(timeToWait);
if (asyncResult.IsCompleted) {
IPEndPoint remoteEP = null;
byte[] receivedData = udpClient.EndReceive(asyncResult, ref remoteEP);
string msg = System.Text.Encoding.UTF8.GetString(receivedData);
Console.WriteLine($"get end point message:{msg}");
mLock.Release();
} else {
mLock.Release();
Console.WriteLine("UDP failed!!!!!!");
}
}
--------------------------------
參考 : 這裡
以上,希望對你有幫助
一如文件「Extjs4 ,如何偵測是否點在pop up window 的外面」
一樣,可以考慮在window的mask再加工
如果是全域設定,就直接改 .x-mask css就可以了
但是如果是各別的window (彈吧七彩霓虹window )
就要在show / close事件中加減cls了
----css --------------------------
.seemsNoWinMask.x-mask {
filter: alpha(opacity=0);
opacity: .0;
background:white !important;
}
-----ext js 4------------------------------------
let win = Ext.create('Ext.window.Window', {
listeners: {
show: function (win) {
if (this.modal) {
var dom = Ext.dom.Query.select('.x-mask');
var el = Ext.get(dom[0]);
el.addCls('seemsNoWinMask');
}
},
close: function (win) {
if (this.modal) {
var dom = Ext.dom.Query.select('.x-mask');
var el = Ext.get(dom[0]);
el.removeCls('seemsNoWinMask');
}
}
},
......
....
-----------------------------------------------------
extjs 6.2
--------------------------------------------
listeners: {
show: function (win) {
if (this.modal) {
var dom = Ext.dom.Query.select('.x-mask');
for (var i = 0; i < dom.length; i++) {
Ext.get(dom[i]).addCls('seemsNoWinMask');
}
}
},
close: function (win) {
if (me.modal) {
var dom = Ext.dom.Query.select('.x-mask');
for (var i = 0; i < dom.length; i++) {
Ext.get(dom[i]).removeCls('seemsNoWinMask');
}
}
}
}
...
...
--------------------------------------
以上
(2020了,我還在寫extjs .....)
之所以會想用這個去邊的textfield,
是因為在某次實作時,要實作一個很類似chrome的search textfield,又內含清空及搜尋的buttons
但又不想繼承field類別(好啦,我承認懶得試這方式),所以要用組裝的方式來做這東西
要把border去除一下,
(以下是extjs 6.2 )
----先準備一個css----------------------
.x-form-textfield-noborder .x-form-trigger-wrap-default {
border-width: 0px;
border-style: solid;
border-color: #d0d0d0;
}
------------------------------------------
那麼,那個要套用css的texfield就是會像以下的例子
......................................
//...外面包他的container
{
xtype: 'container',
width: 170,
height: 25,
margin: '20 0 0 10',
//textfield去邊,要用外層的container做框來包textfield & buttons.
style: {
borderColor: 'lightgray',
borderStyle: 'solid',
borderWidth: '1px'
},
layout: {
align: 'stretch',
type: 'hbox'
},
items: [
//-------------------重點來了---------------------------
{
margin: '20 0 0 20',
xtype: 'textfield',
cls: 'x-form-textfield-noborder',
}, //之下,是兩個button
{
xtype: 'button',
style: {
background: 'white',
borderRadius: '0px',
borderStyle: 'solid',
marginRight: '3px',
marginTop: '1px',
marginBottom: '1px',
borderColor: '#d0d0d0;',
borderWidth: '0px'
},
height: 16,
width: 16,
icon: './images/icon2del.gif'
},
{
xtype: 'button',
style: {
background: 'white',
borderRadius: '0px',
borderStyle: 'solid',
marginLeft: '3px',
marginTop: '1px',
marginBottom: '1px',
borderColor: '#d0d0d0;',
borderWidth: '0px'
},
height: 18,
minWidth:20,
icon:'./images/search18x18.png'
}
]
}
--------------------------------
當然,如果這個欄位只是display only的話,那就用displayfield
尤其是在layout type是table的情況之下,xtype:'label'通常怎麼喬margin & padding都沒用的情況之下
那就用displayfield或是這個去框的textfield吧
參考:
https://blog.csdn.net/onightfalls/article/details/78601091
https://stackoverflow.com/questions/29987504/extjs-displayfield-with-same-style-as-textfield
以上
實驗預期對的東西,是必須的,
然而,實驗"錯誤狀況"有無落實,更是一個系統良窳之所在
一般在react js用到axios都是用 promise的寫法:
axios.get(url,body,header.....).then(response=>......).catch(error=>);
但是如果上述的url錯誤,或是權限問題,造成錯誤
執行上述的結果通常是「response is undefined」,更別就在then(....)裡做resp.data.....解析
就這樣丟出一個 「undefined」錯誤,誰看得懂啊
如何是好?
如果,不要用要axios預設的包裝機制--我們把http狀態解釋權拿回來,會不會好一點?
是的,axios也有想到這點,所以有了這個設定參數「validateStatus:false」
奪回解釋權,axios負責傳送接收,接下來就是我們事了
-------以下雖然是用saga,但基本工作原理是一樣的------
--以udemy 課程「React-The complete Guide」 sample code : buger app為例-----
export function* doFetchOrderProcessBySaga(action) {
yield put(actions.doBeginFetchOrders());
/*
const authState = yield select((state) => state.auth);
const token = authState.token;
const userId = authState.userId;
*/
//let's finish above 3 command in one line
const { token, userId } = yield select((state) => state.auth);
const queryParam =
"?auth=" + token + '&orderBy="userId"&equalTo="' + userId + '"';
try {
const resp = yield axios.get("/orders.json" + queryParam, {
validateStatus: false
});
//if hoc/withErrorHandler instead of "withErrorHandler_class"
//please DO NOT return by 「yield put(actions.fetchOrdersSeccess([]));」,or users can not see the error message & Modal
//(don't ask me why)
// if (!resp || resp === undefined) {
// yield put(actions.fetchOrdersFailed("return undefined.please check URL"));
// return;
// }
if (resp.status !== 200) {
yield put(
actions.fetchOrdersFailed(
"ERROR:" + resp.status + " " + resp.statusText
)
);
return;
}
let orderTmp = [];
for (let key in resp.data) {
orderTmp.push({
...resp.data[key],
id: key
});
}
yield put(actions.fetchOrdersSeccess(orderTmp));
} catch (err) {
yield put(actions.fetchOrdersFailed(err.message));
}
}
-------------------------------------------
驗證:
切到"orders"單元,在orders.js初次render時下載訂單資訊為例.
如果是正常的話,是如以下畫面
PDDocument document=new PDDocument();
-------------------------------document.load(new File("E:\\download\\xxxx.pdf"));PDFRenderer renderer = new PDFRenderer(document); var pageCount=document.getNumberOfPages(); <--居然是「永遠的0」..... for(var i=0;i<pageCount;i++){ BufferedImage image = renderer.renderImage(i); ImageIO.write(image, "JPEG", new File("E:\\download\\pdf_"+i+".jpg")); }
PDDocument document = PDDocument.load(new File("e:\\download\\xxx.pdf"));
...
...
...
-----------------------------
這樣getNumberOfPages就會是正確的了
居家辦公很悶的,鬧個笑話給各位PG笑一下吧
enum PlayerStatus { AXN_INIT("init"), AXN_PLAY("Play"), AXN_PAUSE("Pause"), AXN_FINISH("Finshed"); private final String value; private PlayerStatus(String s) { value = s; } public String toString(){ return value; } }
class Player { private PlayerStatus xntStatus; public Player(PlayerStatus status) { xntStatus=status; } @Override public void setStatus(PlayerStatus s) { xntStatus=s; } @Override public String getStatus() { return xntStatus.toString(); } }.......public void main(String[] args){.........var player=new Player(PlayerStatus.AXN_INIT);System.out.println("status is "+player.getStatus()); player.setStatus(PlayerStatus.AXN_PLAY); System.out.println("status is "+player.getStatus());....}----------------------------------------------------這樣就可以更具體限制了有關java enum 類型的更完整的介紹,請參考以下更精闢的好文 https://tpu.thinkpower.com.tw/tpu/articleDetails/1432同場加映!!如果是要切換狀態時的行為,不是在player裡大改, 而是由playerStatus決定呢?------------原班人馬,加個狀態表------------------------------//先定義行為interface PlayerIsDoing{ void doing(); }class InitPlayer implements PlayerIsDoing{ public void doing(){ System.out.println("Doing Init Now"); } } class PlayingPlayer implements PlayerIsDoing{ public void doing(){ System.out.println("Playing Now"); } }//再定義行為對映表,順便了解一下直接給值的HashMap的寫法class HtLolder{ static PlayerIsDoing p1=new InitPlayer(); static PlayerIsDoing p2=new PlayingPlayer(); static Map<String,PlayerIsDoing> ht=new HashMap<String,PlayerIsDoing>(){ { put("init",p1); put("Play",p2); } }; }//改一下enum類別enum PlayerStatus { AXN_INIT("init"), AXN_PLAY("Play"); Map<String,PlayerIsDoing> ht=HtLolder.ht; private final String value; private PlayerStatus(String s) { value = s; } public String toString(){ return value; }//重點來了!! public void doPlaying(){ ht.get(value).doing(); <----------- } }class Player implements PlayerAction{ private PlayerStatus xntStatus; public Player(PlayerStatus status) { xntStatus=status; } @Override public void setStatus(PlayerStatus s) { xntStatus=s; } @Override public String getStatus() { xntStatus.doPlaying();<----------- return xntStatus.toString(); } }//it's show time!!public static void main(String[] args) throws IOException { var player=new Player(PlayerStatus.AXN_INIT); System.out.println("status is "+player.getStatus()); player.setStatus(PlayerStatus.AXN_PLAY); System.out.println("status is "+player.getStatus());.......}--------------------------------------------------------------這樣,有新行為,player不用改(小改啦),把新行為放在PlayerStatus跟行為對映表所在的套件中
會比較靈活些吧
大家加油吧!!