tag:blogger.com,1999:blog-8836519666616788119.post6168079561709341680..comments2024-01-28T06:47:43.000+08:00Comments on 智慧生活科技專業社群: Android Bluetooth 應用之 HelloBTUart(RS-232)敏哥http://www.blogger.com/profile/10610143766007407031noreply@blogger.comBlogger186125tag:blogger.com,1999:blog-8836519666616788119.post-92046621373410667512016-11-05T23:42:27.509+08:002016-11-05T23:42:27.509+08:00165行是
btServerSocket.close();
這個會有物件不存在的問題嗎
這個不是做關...165行是<br />btServerSocket.close();<br />這個會有物件不存在的問題嗎<br />這個不是做關閉的動作嗎Anonymoushttps://www.blogger.com/profile/01842878447737455240noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-3302282357046038682016-11-03T20:53:14.920+08:002016-11-03T20:53:14.920+08:00檢查一下這一行,應該是物件不存在檢查一下這一行,應該是物件不存在敏哥https://www.blogger.com/profile/10610143766007407031noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-63128003828479266732016-11-03T20:16:58.535+08:002016-11-03T20:16:58.535+08:00你好
我出現了這個錯誤提示
我不太小得是哪個部分的問題
上面寫NullPointerExceptio...你好<br />我出現了這個錯誤提示<br />我不太小得是哪個部分的問題<br />上面寫NullPointerException<br />但我對過並沒有Null的情況<br />11-03 20:11:59.490 18384-18384/com.example.ryan.bt E/AndroidRuntime: FATAL EXCEPTION: main<br /> Process: com.example.ryan.bt, PID: 18384<br /> java.lang.NullPointerException<br /> at com.example.ryan.bt.MainActivity$3.onClick(MainActivity.java:165)<br /> at android.view.View.performClick(View.java:4487)<br /> at android.view.View$PerformClick.run(View.java:18737)<br /> at android.os.Handler.handleCallback(Handler.java:733)<br /> at android.os.Handler.dispatchMessage(Handler.java:95)<br /> at android.os.Looper.loop(Looper.java:136)<br /> at android.app.ActivityThread.main(ActivityThread.java:5230)<br /> at java.lang.reflect.Method.invokeNative(Native Method)<br /> at java.lang.reflect.Method.invoke(Method.java:515)<br /> at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:780)<br /> at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:596)<br /> at dalvik.system.NativeStart.main(Native Method)Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-38328593107220955122016-10-24T10:40:26.083+08:002016-10-24T10:40:26.083+08:00敏哥你好
資料斷斷續續這部分我已經改成功了
不過現在遇到一個問題不知道敏哥是否可以幫解惑
在選擇完...敏哥你好<br />資料斷斷續續這部分我已經改成功了<br />不過現在遇到一個問題不知道敏哥是否可以幫解惑<br /><br />在選擇完藍牙裝置後按開始連線時<br />APP會無回應退出<br />第二次之後就不會了這是?<br />錯誤提示是血在159行Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-41761695396326394542016-10-23T21:38:10.585+08:002016-10-23T21:38:10.585+08:00您必須設計通訊協定才能收到完整封包。您必須設計通訊協定才能收到完整封包。敏哥https://www.blogger.com/profile/10610143766007407031noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-50832440079214501592016-10-23T19:39:13.036+08:002016-10-23T19:39:13.036+08:00老師你好
我在接收訊息時
從arduino收到的資料是斷斷續續的
我是傳送距離值
假設現在是200
...老師你好<br />我在接收訊息時<br />從arduino收到的資料是斷斷續續的<br />我是傳送距離值<br />假設現在是200<br />他是會斷開不完整的<br />我該怎麼改接收部分Anonymoushttps://www.blogger.com/profile/01842878447737455240noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-4518758327436470252016-02-24T23:56:00.346+08:002016-02-24T23:56:00.346+08:00老師你好
我最近要寫一個APP是要跟arduino的藍芽作互動的,APP包含接收資料跟傳送資料
ar...老師你好<br />我最近要寫一個APP是要跟arduino的藍芽作互動的,APP包含接收資料跟傳送資料<br />arduino的藍芽可能是HC-05之類的<br />請問上面程式可以跟arduino的藍芽互動嗎?<br />因為我看上面是用RS-232 所以上來發問123https://www.blogger.com/profile/03265249074626203997noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-8487686123079626882015-11-14T17:28:46.446+08:002015-11-14T17:28:46.446+08:00我在搜尋裝置的時候發生停止運行,請問該如何解決我在搜尋裝置的時候發生停止運行,請問該如何解決Anonymoushttps://www.blogger.com/profile/16541937835127591520noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-3906819891327494122015-09-21T14:48:02.157+08:002015-09-21T14:48:02.157+08:00老師您好
最近我在研究有關藍芽裝置的傳輸,我只做到了讓程式有"打開藍芽"&quo...老師您好<br />最近我在研究有關藍芽裝置的傳輸,我只做到了讓程式有"打開藍芽""關閉藍芽""列出之前配對過的裝置"及"尋找裝置"四項功能,但一直無法做出傳輸資料,看完您的程式碼後,雖釐清了很多概念,但仍然做不出來TAT,所以想請教您Anonymoushttps://www.blogger.com/profile/09295513072758820037noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-29011806442974113122015-09-21T14:40:19.551+08:002015-09-21T14:40:19.551+08:00您好,我最近在研究有關藍芽裝置傳輸的程式,我只做到能讓app顯示"藍芽開".&#...您好,我最近在研究有關藍芽裝置傳輸的程式,我只做到能讓app顯示"藍芽開".'藍芽關"."列出最近配對過的裝置"和"尋找裝置"這四樣功能,但是我不知道要如何把資料"傳送給別的裝置",參考過您的程式碼後,雖然釐清了很多概念,但是仍舊試不出來,想像您請教一下Anonymoushttps://www.blogger.com/profile/09295513072758820037noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-31600597957102878352014-11-20T22:03:50.195+08:002014-11-20T22:03:50.195+08:00老師您好:
我的程式會停止在stBocket.connect(); 並顯示連接埠異常,但是st...老師您好:<br /> 我的程式會停止在stBocket.connect(); 並顯示連接埠異常,但是stBocket有值...<br />所以我有點困惑,以上的同學遇到的問題我看完後沒有太大的感想。<br />Anonymoushttps://www.blogger.com/profile/01941942726321323874noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-86433822057907703602014-08-27T13:58:50.006+08:002014-08-27T13:58:50.006+08:00你好:
若我從藍芽端傳送資料到手機端時是字串,Ex:BT1051
但是在textview的畫面是可以...你好:<br />若我從藍芽端傳送資料到手機端時是字串,Ex:BT1051<br />但是在textview的畫面是可以顯示正常字串,當我針對字串<br />進行判斷,但是所有的判斷都失靈<br />就是if(msg=="BT1051"){To do someting}else{Not to do something}<br />這串沒作用?<br />Anonymoushttps://www.blogger.com/profile/08988454071129937271noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-31701940241793584782013-12-29T13:57:47.444+08:002013-12-29T13:57:47.444+08:00不好意思 我有兩個問題
在 LINE 50 中 的msg 寫著The value of the fi...不好意思 我有兩個問題<br />在 LINE 50 中 的msg 寫著The value of the field MainActivity.msg is not used 會有問題嗎<br />另外我在 btHandler.sendEmptyMessage(0); 中的btHandler 寫著 btHandler cannot be resolved 但是其他都是正常的~如何辦??Anonymoushttps://www.blogger.com/profile/12617957578571513913noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-85399307434425431972013-10-31T22:53:10.583+08:002013-10-31T22:53:10.583+08:00您好,
我和"平常心"依樣執行到btAdapt.startDiscovery()...您好,<br />我和"平常心"依樣執行到btAdapt.startDiscovery();就會出現異常中止耶<br />加入您建議的Log.d(tag,"本機藍牙位址:" + btAdapt.getAddress());<br />查的到本機藍芽!<br />但無法執行><<br />請問版大有解嗎?<br />謝謝您!!<br />___________________________________________________________<br />10-31 22:47:30.210: D/qdmemalloc(15389): ion: Mapped buf base:0x6e0c2000 size:8355840 offset:0 fd:58<br />10-31 22:47:30.210: D/qdmemalloc(15389): ion: Mapped buf base:0x66e3a000 size:4096 offset:0 fd:59<br />10-31 22:47:30.290: D/qdmemalloc(15389): ion: Mapped buf base:0x6f0c3000 size:8355840 offset:0 fd:60<br />10-31 22:47:30.290: D/qdmemalloc(15389): ion: Mapped buf base:0x67601000 size:4096 offset:0 fd:61<br />10-31 22:47:44.285: D/ㄚㄚㄚㄚ!!!!!!!!!!!!!!!!!!!!(15389): 本機藍牙位址:98:0D:2E:27:39:28<br />10-31 22:47:44.285: W/dalvikvm(15389): threadid=1: thread exiting with uncaught exception (group=0x415e8970)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): FATAL EXCEPTION: main<br />10-31 22:47:44.285: E/AndroidRuntime(15389): java.lang.SecurityException: Need BLUETOOTH ADMIN permission: Neither user 10055 nor current process has android.permission.BLUETOOTH_ADMIN.<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at android.os.Parcel.readException(Parcel.java:1440)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at android.os.Parcel.readException(Parcel.java:1394)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at android.bluetooth.IBluetooth$Stub$Proxy.cancelDiscovery(IBluetooth.java:989)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at android.bluetooth.BluetoothAdapter.cancelDiscovery(BluetoothAdapter.java:881)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at com.example.bt_connect.MainActivity$4.onClick(MainActivity.java:293)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at android.view.View.performClick(View.java:4280)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at android.view.View$PerformClick.run(View.java:17984)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at android.os.Handler.handleCallback(Handler.java:730)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at android.os.Handler.dispatchMessage(Handler.java:92)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at android.os.Looper.loop(Looper.java:158)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at android.app.ActivityThread.main(ActivityThread.java:5789)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at java.lang.reflect.Method.invokeNative(Native Method)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at java.lang.reflect.Method.invoke(Method.java:525)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:843)<br />10-31 22:47:44.285: E/AndroidRuntime(15389): at dalvik.system.NativeStart.main(Native Method)<br />HeyYoThisIsYHHhttps://www.blogger.com/profile/06719139493977867157noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-89884009051382321272013-10-16T11:43:42.917+08:002013-10-16T11:43:42.917+08:00Sorry! MCU撥放MP3我並沒有做過......^^Sorry! MCU撥放MP3我並沒有做過......^^蚊子https://www.blogger.com/profile/02923160236465521058noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-35864120754477300872013-10-16T11:42:46.373+08:002013-10-16T11:42:46.373+08:008051那段C是如何將資料傳到藍牙,你搜尋一下8051 uart 或 8051 rs-232很多資料...8051那段C是如何將資料傳到藍牙,你搜尋一下8051 uart 或 8051 rs-232很多資料!蚊子https://www.blogger.com/profile/02923160236465521058noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-38467752756849228022013-10-15T16:20:06.536+08:002013-10-15T16:20:06.536+08:00因為目前想要做一個透過藍牙控制MCU播放MP3功能的專案,但是不是很熟悉MCU的運作,才想問一下板主...因為目前想要做一個透過藍牙控制MCU播放MP3功能的專案,但是不是很熟悉MCU的運作,才想問一下板主有沒有相關的經驗.Anonymoushttps://www.blogger.com/profile/08988454071129937271noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-84187542369082548292013-10-12T11:31:21.138+08:002013-10-12T11:31:21.138+08:00可否透露一下,8051那段C是如何將資料傳到藍牙?讓Android可以去讀取藍牙的資料並顯示在手機上...可否透露一下,8051那段C是如何將資料傳到藍牙?讓Android可以去讀取藍牙的資料並顯示在手機上Anonymoushttps://www.blogger.com/profile/08988454071129937271noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-57536383275757493852013-10-03T23:36:55.801+08:002013-10-03T23:36:55.801+08:00溫度的部分手機送訊息問-->8051回溫度-->Android TextView顯示--...溫度的部分手機送訊息問-->8051回溫度-->Android TextView顯示-->手機"再"送訊息問-->8051回溫度-->Android TextView清除,顯示-->Loopc.c.joshhttps://www.blogger.com/profile/11662581822132363826noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-49831600104289336712013-10-01T18:07:48.545+08:002013-10-01T18:07:48.545+08:00想請教一下,那個8051+藍牙的畫面,是用甚麼方法將8051上溫度顯示傳到手機上的?純粹是Andro...想請教一下,那個8051+藍牙的畫面,是用甚麼方法將8051上溫度顯示傳到手機上的?純粹是Android程式?還是要Android NDK?Anonymoushttps://www.blogger.com/profile/08988454071129937271noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-10745072490111041302013-09-26T00:09:07.180+08:002013-09-26T00:09:07.180+08:00作者已經移除這則留言。c.c.joshhttps://www.blogger.com/profile/11662581822132363826noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-17746678774965802352013-09-16T22:48:13.493+08:002013-09-16T22:48:13.493+08:00作者已經移除這則留言。c.c.joshhttps://www.blogger.com/profile/11662581822132363826noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-66199204162481734782013-07-28T13:17:47.706+08:002013-07-28T13:17:47.706+08:00to 蚊子版主
恩恩!!
我後來發現要把283行的msgText.append(msg)改成msgT...to 蚊子版主<br />恩恩!!<br />我後來發現要把283行的msgText.append(msg)改成msgText.setText<br />這樣才會持續刷新而且不顯示出舊的數據!!<br />謝謝版主這幾天耐心回答c.c.joshhttps://www.blogger.com/profile/11662581822132363826noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-61453971937215405132013-07-25T23:06:56.054+08:002013-07-25T23:06:56.054+08:00溫度的部分手機送訊息問-->8051回溫度-->Android TextView顯示--...溫度的部分手機送訊息問-->8051回溫度-->Android TextView顯示-->手機"再"送訊息問-->8051回溫度-->Android TextView清除,顯示-->Loop<br /><br />只用了很單純的Text View而已,沒有很複雜的程式碼^__^蚊子https://www.blogger.com/profile/02923160236465521058noreply@blogger.comtag:blogger.com,1999:blog-8836519666616788119.post-44872663398230377382013-07-23T21:13:43.843+08:002013-07-23T21:13:43.843+08:00to 蚊子版主
請問一下像文章下方的測試影片""測試步驟 : 搜尋藍牙 --&g...to 蚊子版主<br />請問一下像文章下方的測試影片""測試步驟 : 搜尋藍牙 --> 藍牙連接 --> DS1821溫度變化測試(8051) --> 8051 GPIO測試(LED亮滅)""<br />像這部影片中,作者把手按住溫度感測讓溫度上升<br />手機螢幕上就可以從20→21→22→...一直刷新<br />要怎樣才能達到這種目的呢?<br />我的疑問是要怎樣才能讓數字可以在同一個TEXTVIEW一直刷新而不留下舊的數字<br />因為我做到現在雖然可以接收,但是就是沒辦法做到像上面的影片那樣<br />拜託您解答了 感激不盡!!c.c.joshhttps://www.blogger.com/profile/11662581822132363826noreply@blogger.com