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三星Android设备上的GPS问题?(三星 gps)

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对于三星Android设备上的GPS问题?感兴趣的读者,本文将提供您所需要的所有信息,我们将详细讲解三星gps,并且为您提供关于ajax在某些Android设备上运行,而不是在其他设备上运行、Andr

对于三星Android设备上的GPS问题?感兴趣的读者,本文将提供您所需要的所有信息,我们将详细讲解三星 gps,并且为您提供关于ajax在某些Android设备上运行,而不是在其他设备上运行、Android 11 设备上的后台执行问题、Android 7 设备上的 Android ART 问题?、Android Beacon Library在一台Android 4.4设备上运行良好,但在另一台Android设备上运行良好的宝贵知识。

本文目录一览:

三星Android设备上的GPS问题?(三星 gps)

三星Android设备上的GPS问题?(三星 gps)

我想知道在三星设备中获取位置信息是否有问题.位置提取代码可在三星设备以外的所有设备上正常工作.

从我在网上搜索的任何内容来看,三星提供GPS修复的设备似乎都存在一些问题.有什么解决方法吗?该应用程序可以在Nexus One,HTC设备和Motorola设备中正常运行.但是三星设备却出了问题.

有人可以让我知道任何解决方案吗?

解决方法:

三星galaxy S手机(我有一个)上有很多关于GPS问题的话题. GPS锁定缓慢或完全失败,在相同的位置/时间比大多数其他GPS设备看到更少的卫星,并且在建立锁定时准确性较低.

没有人能提供可靠的解决方案,因为三星核心代码处理与GPS芯片接口的问题.有一些操作符针对galaxy S手机发布了OTA补丁(JI6),该补丁有助于某些人获得更好的GPS性能,但大多数操作符从未发布过此补丁,因为该修复程序也在Froyo 2.2更新中,该更新目前正由区域.

ajax在某些Android设备上运行,而不是在其他设备上运行

ajax在某些Android设备上运行,而不是在其他设备上运行

[LATER EDIT:我发现,问题与 Android版本有关,而不是设备类型.所以我的代码非常适合Android直到4.0,而不是上面.修复就在答案中.]

这个问题至少浪费了2天.我有几个网页打包为Android应用程序.并且可以在浏览器和我的Android设备上完美运行,包括galaxy Tab 2.但不适用于Nexus.我没有它,所以我一直在测试APK和朋友.错误发生在AJAX.相同的代码对我有用,不适合他(还有其他人,我不知道他们的设备).

以下是我使用的小测试.如你所见,它没有错误(这是我的猜测).为什么不在所有Android设备上运行?我提到我已经使用Eclipse和Build.PhoneGap.com编译了这段代码(其他提到的文件在这里http://jumpshare.com/b/57O6tH).然而,同样的结果是:我得到的APK是在某些设备上工作,而不是在其他设备上.使用* file:///android_asset/www/import.html*对我没有帮助.错误是404,因为文件不存在.但它是!

哪里出错了?它让我疯狂 :).为什么这个代码在浏览器和我的galaxy Tab 2(和三星Gio)上的APK工作正常,但在Nexus(和其他设备)上没有?

<!DOCTYPE html>
<html> 
<head> 
    <Meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>Test</title> 
    <Meta name="viewport" content="width=device-width,initial-scale=1">    
    <link href="jquery.mobile-1.2.0.min.css" rel="stylesheet"/>
    <script src="jquery-1.8.3.min.js" type='text/javascript'></script>
    <script src="jquery.mobile-1.2.0.min.js" type='text/javascript'></script>   
    <script type='text/javascript'>
    //$(document).ready(function() {
    $(document).bind("pageinit",function(){
        $("#buton").bind('click',function(){
            $.mobile.showPageLoadingMsg();
            $.ajax({
                url:'import.html',datatype:'html',type: 'GET',success:function(html){
                    $.mobile.hidePageLoadingMsg();
                    $("#result").html(html);
                },error: function(jqXHR,textStatus,errorThrown) {
                    $("#result").html("ERRORS:"+errorThrown+"<hr>"+textStatus+"<hr>"+JSON.stringify(jqXHR))
                    $.mobile.hidePageLoadingMsg();
                    alert('Not working!!!');
                }
            })
        });
    });
    </script>
</head> 
<body> 
    <!-- Pagina de start -->
    <div data-role="page" id="start">
        <div data-role="header" data-theme="b">
            <h1>Test</h1>
        </div>
        <div data-role="content">
            <button id="buton">AJAX!</button>
            <div id="result"></div>
        </div>
    </div>
</body>
</html>
我找到了我需要的东西. Android 4.1和4.2引入了这个新方法:getAllowUniversalAccessFromFileURLs

由于它不能在16以下的API上运行,因此解决方案需要更多的行,以确保这种不存在的方法不会在以前的API中导致错误.

public class MainActivity extends Activity {
/** Called when the activity is first created. */
WebView webView;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    webView = (WebView) findViewById(R.id.webView);
    webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
    webView.getSettings().setJavaScriptEnabled(true);
    int currentapiVersion = android.os.Build.VERSION.SDK_INT;
    if (currentapiVersion >= android.os.Build.VERSION_CODES.JELLY_BEAN){
        fixNewAndroid(webView);
    }
    webView.setWebChromeClient(new WebChromeClient());
    webView.loadUrl("file:///android_asset/www/index.html");
}

@TargetApi(16)
protected void fixNewAndroid(WebView webView) {
    try {
        webView.getSettings().setAllowUniversalAccessFromFileURLs(true);
    } catch(NullPointerException e) {
    }
}

}

Android 11 设备上的后台执行问题

Android 11 设备上的后台执行问题

如何解决Android 11 设备上的后台执行问题?

最近我发现大约 2 个月前,三星设备发布了 Android 11 更新。

三星在此版本的操作系统中决定真正严格暂停在后台运行的应用程序/服务 (more info)

所以例如当我正在处理的应用程序进入后台并且手机被锁定时,所有 BT 通信几乎立即暂停。当我解锁屏幕时,在那一刻,所有线程都不再挂起,继续执行。

OS 因此完全忽略了前台服务机制。 Official documentation

此外,当我尝试将我的应用添加到“永不休眠应用”列表时(Android 11 上电池优化白名单的替代方案) - 应用仍然被挂起 + 此白名单机制似乎不稳定,即使我添加我的应用加入白名单,几个小时后应用从列表中消失。

我的问题:

  • 您是否也在 Android 11 上看到过类似问题?什么有助于解决问题?

  • 这只是三星特有的问题,还是 Pixel 设备也做同样的优化(忽略前台服务和白名单)?

感谢您的任何意见。

解决方法

暂无找到可以解决该程序问题的有效方法,小编努力寻找整理中!

如果你已经找到好的解决方法,欢迎将解决方案带上本链接一起发送给小编。

小编邮箱:dio#foxmail.com (将#修改为@)

Android 7 设备上的 Android ART 问题?

Android 7 设备上的 Android ART 问题?

如何解决Android 7 设备上的 Android ART 问题??

最近我开始在 Play 管理中心看到我的应用程序的崩溃报告,如下所示:

backtrace:
  #00  pc 00000000000b0cf2  /system/lib/libart.so (art::ClassLinker::ResolveType(unsigned short,art::ArtMethod*)+37)
  #00  pc 000000000039a7bd  /system/lib/libart.so (artAllocObjectFromCodeRosAlloc+84)
  #00  pc 00000000000adad9  /system/lib/libart.so (art_quick_alloc_object_rosalloc+136)
  #00  pc 000000000004830b  /dev/ashmem/dalvik-jit-code-cache (deleted)

这种情况只发生在运行 7 和 7.1 的设备上,甚至可能不是全部,因为我在日志中只看到少数设备。

我不记得对本机代码进行了任何更改,也没有添加任何可能导致这种情况的库。

有谁知道是什么原因造成的,我该如何调试?这个问题害死我了。

解决方法

暂无找到可以解决该程序问题的有效方法,小编努力寻找整理中!

如果你已经找到好的解决方法,欢迎将解决方案带上本链接一起发送给小编。

小编邮箱:dio#foxmail.com (将#修改为@)

Android Beacon Library在一台Android 4.4设备上运行良好,但在另一台Android设备上运行良好

Android Beacon Library在一台Android 4.4设备上运行良好,但在另一台Android设备上运行良好

更新:我尝试了一种更直接的方法(参见下面的编辑3),这使得手表上的信标缺乏有趣的数据.

有关非工作设备的详细信息.
智能手表(通用)列为蓝牙4.0功能
MTK6572芯片组
型号EC720(似乎有很多变种)
Android 4.4.2
内核:3.4.67 chendalin-Z87-HD3#1 2014年12月27日
内部版本号:H82D.SMARTWATCH.OC4.0.20141447
自定义版本:1419655453

我正在使用相同的Radius Networks标签信标测试相同的应用程序.在这个测试中,我在我的设备的近距离内有相同的4个信标.

设备1是Nexus 7(2013),我还没有更新到Android L,它运行4.4.4

Device 2是一款通用的智能手表,在MTK6572上运行android 4.4.2.规格列出有蓝牙4.0

当我使用Android Beacon Library运行我的测试应用程序时,Nexus报告信标,但智能手表没有.它似乎检测到它们,但我看到logcat中的条目如:D / BluetoothAdapter:onScanResult() – Device = E5:E0:20:CF:63:32 RSSI = -60.当BeaconParser未设置为读取正确类型的信标时,通常会显示这些消息,但在我的情况下,我很确定这不是问题,因为nexus看到的信标具有完全相同的代码.

对于2个设备看起来非常不同的日志输出,我开始怀疑手表的android构建是否因为BLE支持被禁用或者具有不完整的堆栈.我已经仔细检查了蓝牙是否打开,并且还想注意该手表具有应用程序权限管理,我为应用程序请求的所有权限设置为“始终允许”.

这里来自smartwatch的部分logcat:

02-03 19:40:40.393    2620-2620/com.mapcushion.android.mapcushionpingl D/BeaconManager﹕ This consumer is not bound.  binding: com.mapcushion.android.mapcushionpingl.Scan@41c7d2c0
02-03 19:40:40.435    2620-2620/com.mapcushion.android.mapcushionpingl D/BeaconManager﹕ consumer count is Now:1
...
02-03 19:40:40.617    2620-2620/com.mapcushion.android.mapcushionpingl I/BeaconService﹕ beaconService version 2.1 is starting up
02-03 19:40:40.638    2620-2620/com.mapcushion.android.mapcushionpingl I/CycledLeScanner﹕ This is not Android 5.0.  We are using old scanning APIs
02-03 19:40:40.645    2620-2620/com.mapcushion.android.mapcushionpingl D/ModelSpecificdistanceCalculator﹕ Finding best distance calculator for 4.4.2,KOT49H,EC720,alps
02-03 19:40:40.645    2620-2620/com.mapcushion.android.mapcushionpingl D/AndroidModel﹕ score is 0 for LGE;Nexus 4;KOT49H;4.4.2 compared to alps;EC720;KOT49H;4.4.2
02-03 19:40:40.645    2620-2620/com.mapcushion.android.mapcushionpingl D/AndroidModel﹕ score is 0 for LGE;Nexus 5;LPV79;4.4.2 compared to alps;EC720;KOT49H;4.4.2
02-03 19:40:40.645    2620-2620/com.mapcushion.android.mapcushionpingl W/ModelSpecificdistanceCalculator﹕ Cannot find match for this device.  Using default
02-03 19:40:40.645    2620-2620/com.mapcushion.android.mapcushionpingl D/ModelSpecificdistanceCalculator﹕ Finding best distance calculator for 4.4.2,alps
02-03 19:40:40.645    2620-2620/com.mapcushion.android.mapcushionpingl D/AndroidModel﹕ score is 0 for LGE;Nexus 4;KOT49H;4.4.2 compared to alps;EC720;KOT49H;4.4.2
02-03 19:40:40.646    2620-2620/com.mapcushion.android.mapcushionpingl D/AndroidModel﹕ score is 0 for LGE;Nexus 5;LPV79;4.4.2 compared to alps;EC720;KOT49H;4.4.2
02-03 19:40:40.646    2620-2620/com.mapcushion.android.mapcushionpingl W/ModelSpecificdistanceCalculator﹕ Cannot find match for this device.  Using default
02-03 19:40:40.648    2620-2620/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ No org.altbeacon.beacon.SimulatedScanData class exists.
02-03 19:40:40.649    2620-2620/com.mapcushion.android.mapcushionpingl D/ActivityThread﹕ SVC-CREATE_SERVICE handled : 0 / CreateServiceData{token=android.os.BinderProxy@41cbbec8 className=org.altbeacon.beacon.service.BeaconService packageName=com.mapcushion.android.mapcushionpingl intent=null}
02-03 19:40:40.650    2620-2620/com.mapcushion.android.mapcushionpingl I/BeaconService﹕ binding
02-03 19:40:40.656    2620-2620/com.mapcushion.android.mapcushionpingl D/ActivityThread﹕ SVC-BIND_SERVICE handled : 0 / BindServiceData{token=android.os.BinderProxy@41cbbec8 intent=Intent { cmp=com.mapcushion.android.mapcushionpingl/org.altbeacon.beacon.service.BeaconService }}
02-03 19:40:40.723    2620-2620/com.mapcushion.android.mapcushionpingl D/GraphicBuffer﹕ create handle(0x552ed2b8) (w:256,h:240,f:1)
02-03 19:40:40.725    2620-2620/com.mapcushion.android.mapcushionpingl I/MaliEGL﹕ [Mali]surface->num_buffers=4,surface->num_frames=3,win_min_undequeued=1
02-03 19:40:40.725    2620-2620/com.mapcushion.android.mapcushionpingl I/MaliEGL﹕ [Mali]max_allowed_dequeued_buffers=3
02-03 19:40:40.725    2620-2620/com.mapcushion.android.mapcushionpingl D/GraphicBuffer﹕ close handle(0x552ed2b8) (w:256 h:240 f:1)
02-03 19:40:40.733    2620-2620/com.mapcushion.android.mapcushionpingl D/GraphicBuffer﹕ create handle(0x553ec108) (w:256,f:1)
02-03 19:40:40.735    2620-2620/com.mapcushion.android.mapcushionpingl D/Openglrenderer﹕ Enabling debug mode 0
02-03 19:40:40.737    2620-2620/com.mapcushion.android.mapcushionpingl D/GraphicBuffer﹕ create handle(0x5542c8a8) (w:768,h:768,f:1)
02-03 19:40:40.741    2620-2620/com.mapcushion.android.mapcushionpingl W/MALI﹕ MTK_AUX_isMTKFormat:168: int MTK_AUX_isMTKFormat(ANativeWindowBuffer_t*): format=1
02-03 19:40:40.743    2620-2620/com.mapcushion.android.mapcushionpingl D/Openglrenderer﹕ setViewport 240x240 <0x553ec690>
02-03 19:40:40.745    2620-2620/com.mapcushion.android.mapcushionpingl D/BeaconManager﹕ we have a connection to the service Now
02-03 19:40:40.747    2620-2620/com.mapcushion.android.mapcushionpingl D/BeaconManager﹕ callback packageName: com.mapcushion.android.mapcushionpingl
02-03 19:40:40.747    2620-2620/com.mapcushion.android.mapcushionpingl D/BeaconManager﹕ This consumer is already bound
...
02-03 19:40:40.814    2620-2620/com.mapcushion.android.mapcushionpingl I/BeaconService﹕ start ranging received
02-03 19:40:40.814    2620-2620/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ Currently ranging 1 regions.
02-03 19:40:40.814    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ start called
02-03 19:40:40.828    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ starting a new scan cycle
02-03 19:40:40.829    2620-2620/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ isEnabled
02-03 19:40:40.834    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ starting a new bluetooth le scan
02-03 19:40:40.835    2620-2620/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ startLeScan(): null
02-03 19:40:40.874    2620-2633/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ onClientRegistered() - status=0 clientIf=1
02-03 19:40:40.879    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ Waiting to stop scan cycle for another 1100 milliseconds
02-03 19:40:40.880    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ Scan started
02-03 19:40:40.880    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ Set scan periods called with 1100,0  Background mode must have changed.
02-03 19:40:40.881    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ We are not in the background.  Cancelling wakeup alarm
02-03 19:40:40.881    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ cancel wakeup alarm: null
02-03 19:40:41.084    2620-2634/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ onScanResult() - Device=E5:E0:20:CF:63:32 RSSI=-45
02-03 19:40:41.084    2620-2634/com.mapcushion.android.mapcushionpingl D/CycledLeScannerForJellyBeanMr2﹕ got record

这是我的代码:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_scan);
    mHandler = new android.os.Handler();
    beaconManager = BeaconManager.getInstanceForApplication(this);
    beaconManager.setDebug(true);
    beaconManager.getBeaconParsers().add(new BeaconParser().
            setBeaconLayout(" m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24"));
    beaconManager.bind(this);
    sendbeacons();

}

@Override
public void onBeaconServiceConnect() {

    beaconManager.setRangeNotifier(new RangeNotifier() {
        @Override
        public void didRangeBeaconsInRegion(Collection<Beacon> beacons,Region region) {
            System.out.println("------- didRangeBeacons!!!!");
            iBeacons = beacons;
            System.out.println("------ num:: " + iBeacons.size());

            /*
            for(Beacon iBeacon : iBeacons) {

                Log.i("Beacon","found \nProxUUID: " + iBeacon.getId1()
                        + "\ntx: " + Integer.toString(iBeacon.getTxPower())
                        + "\nmanu: " + Integer.toString(iBeacon.getManufacturer())
                        + "\ndistance: " + Double.toString(iBeacon.getdistance())
                        + "\nRSSI:" + Integer.toString(iBeacon.getRSSi())
                        + "\nTxPow:" + Integer.toString(iBeacon.getTxPower())
                        + "\nBeacon type code:" + Double.toString(iBeacon.getBeaconTypeCode())
                        + "\n------------------------------------------------");
            }
            */

        }
    });

    try {
        beaconManager.startRangingBeaconsInRegion(new Region("briansbeacons",null,null));
    } catch(remoteexception e) {
        e.printstacktrace();
    }
    beaconManager.bind(this);
}

编辑1:

添加更多特定日志条目以尝试显示信标检测中的差异:我删除了除一个信标之外的所有信息,我注意到工作设备正在通过UUID识别信标,而非工作设备则不是.但我在工作设备的日志中找不到对Device = E5:E0:20:CF:63:32的任何引用.

Nexus 7(工作):

02-02 23:48:14.795  10727-10751/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ beacon detected multiple times in scan cycle :id1: 2f234454-cf6d-4a0f-adf2-f4911ba9ffa6 id2: 4 id3: 101
02-02 23:48:14.795  10727-10751/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ beacon detected :id1: 2f234454-cf6d-4a0f-adf2-f4911ba9ffa6 id2: 4 id3: 101
02-02 23:48:14.795  10727-10751/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ looking for ranging region matches for this beacon
02-02 23:48:14.795  10727-10751/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ matches ranging region: id1: null id2: null id3: null
02-02 23:48:14.795  10727-10751/com.mapcushion.android.mapcushionpingl D/RangeState﹕ adding id1: 2f234454-cf6d-4a0f-adf2-f4911ba9ffa6 id2: 4 id3: 101 to existing range for: org.altbeacon.beacon.service.RangedBeacon@41eb5380
02-02 23:48:14.915  10727-10738/com.mapcushion.android.mapcushionpingl D/CycledLeScannerForJellyBeanMr2﹕ got record
02-02 23:48:14.915  10727-10759/com.mapcushion.android.mapcushionpingl D/BeaconParser﹕ This is not a matching Beacon advertisement.  (Was expecting be ac.  The bytes I see are: 02011a0bff4c0009060102c0a801130000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
02-02 23:48:14.915  10727-10759/com.mapcushion.android.mapcushionpingl D/BeaconParser﹕ This is not a matching Beacon advertisement.  (Was expecting 02 15.  The bytes I see are: 02011a0bff4c0009060102c0a801130000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

SmartWatch(不工作):

02-02 23:46:52.598    3351-3364/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ onScanResult() - Device=E5:E0:20:CF:63:32 RSSI=-31
02-02 23:46:52.599    3351-3364/com.mapcushion.android.mapcushionpingl D/CycledLeScannerForJellyBeanMr2﹕ got record
02-02 23:46:52.600    3351-3364/com.mapcushion.android.mapcushionpingl D/BluetoothDevice﹕ mAddress: E5:E0:20:CF:63:32
02-02 23:46:52.603    3351-3383/com.mapcushion.android.mapcushionpingl D/BeaconParser﹕ This is not a matching Beacon advertisement.  (Was expecting be ac.  The bytes I see are: 0201000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
02-02 23:46:52.603    3351-3383/com.mapcushion.android.mapcushionpingl D/BeaconParser﹕ This is not a matching Beacon advertisement.  (Was expecting 02 15.  The bytes I see are: 0201000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
02-02 23:46:52.605    3351-3383/com.mapcushion.android.mapcushionpingl D/BeaconParser﹕ This is not a matching Beacon advertisement.  (Was expecting 02 15.  The bytes I see are: 0201000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
02-02 23:46:53.432    3351-3351/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ Waiting to stop scan cycle for another 98 milliseconds
02-02 23:46:53.531    3351-3351/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ Done with scan cycle
02-02 23:46:53.531    3351-3351/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ Calling ranging callback

我注意到的另一件事是,在非工作设备中,对BeaconService的唯一引用如下:

02-02 23:46:52.364    3351-3351/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ Calling ranging callback
02-02 23:46:52.364    3351-3351/com.mapcushion.android.mapcushionpingl D/Callback﹕ attempting callback via intent: ComponentInfo{com.mapcushion.android.mapcushionpingl/org.altbeacon.beacon.BeaconIntentProcessor}

而在工作设备中,大多数信标的记录似乎来自该类…

编辑 – 更新2:

回答David关于MAC地址的问题

以下代码:

beaconManager.setRangeNotifier(new RangeNotifier() {
    @Override
    public void didRangeBeaconsInRegion(Collection<Beacon> beacons,Region region) {
    System.out.println("------- didRangeBeacons!!!!");
    iBeacons = beacons;
    System.out.println("------ num:: " + iBeacons.size());


    for(Beacon iBeacon : iBeacons) {
        Log.i("Beacon","\n------------------------------------------------");
        Log.d(TAG,"Mac address is: "+iBeacon.getBluetoothAddress());
        Log.i("Beacon","\n------------------------------------------------");
    }


    }
});

在工作Nexus 7上产生:

02-03 19:44:57.200    3192-3438/com.mapcushion.android.mapcushionpingl I/System.out﹕ ------- didRangeBeacons!!!!
02-03 19:44:57.200    3192-3438/com.mapcushion.android.mapcushionpingl I/System.out﹕ ------ num:: 1
02-03 19:44:57.200    3192-3438/com.mapcushion.android.mapcushionpingl I/Beacon﹕ ------------------------------------------------
02-03 19:44:57.200    3192-3438/com.mapcushion.android.mapcushionpingl D/RangingActivity﹕ Mac address is: E5:E0:20:CF:63:32
02-03 19:44:57.200    3192-3438/com.mapcushion.android.mapcushionpingl I/Beacon﹕ ------------------------------------------------

在智能手表上:

02-03 19:40:46.671    2620-2671/com.mapcushion.android.mapcushionpingl I/System.out﹕ ------- didRangeBeacons!!!!
02-03 19:40:46.671    2620-2671/com.mapcushion.android.mapcushionpingl I/System.out﹕ ------ num:: 0

因此BeaconManager(或底层的android API)没有将“设备”视为信标,但它确实用这条线识别具有相同MAC地址的信标:

02-03 19:40:46.486    2620-2633/com.mapcushion.android.mapcushionpingl D/BluetoothDevice﹕ mAddress: E5:E0:20:CF:63:32

编辑3:

我决定退后一步,尝试使用Android蓝牙API直接查询信标.

基本上我只是想输出返回的字节,看看为什么没有识别信标.并且对于相同的信标,输出看起来完全不同,只有前两个字节具有智能手表所见的信标数据,而nexus 7具有30个字节的数据.

到目前为止,我尝试更改SCAN_TIME没有任何效果.手表收到的数据是否有迹象表明它无法读取数据包?

我使用了以下代码:

private static final long SCAN_TIME = 5000;
    boolean mScanning = false;
    private void scanLeDevice(final boolean enable) {
        Log.i(null,"Inside scanLeDevice");
        Log.i(null,"scan time is: " + SCAN_TIME);
        if (enable) {
            // Stops scanning after a pre-defined scan period.
            mHandler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    mScanning = false;
                    Log.i(null,"Calling stopLeScan");
                    mBluetoothAdapter.stopLeScan(mLeScanCallback);
                }
            },SCAN_TIME);

            mScanning = true;
            Log.i(null,"Calling startLeScan");
            mBluetoothAdapter.startLeScan(mLeScanCallback);
        } else {
            mScanning = false;
            mBluetoothAdapter.stopLeScan(mLeScanCallback);
        }
    }

    private BluetoothAdapter.LeScanCallback mLeScanCallback =
        new BluetoothAdapter.LeScanCallback() {
            @Override
            public void onLeScan(final BluetoothDevice device,int RSSi,final byte[] scanRecord) {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Log.i(null,"INSIDE ONLESCAN");
                        //DO MY WORK
                        Log.i(null,"scanned record: " + scanRecord.length);

                        int startByte = 2;
                        boolean patternFound = false;

                        for(int i=0; i<scanRecord.length; i++) {
                            Log.i(null,"byte " + i + ": " + scanRecord[i]);
                        }

                        while (startByte <= 5) {
                            Log.i(null,"scanned record: " + scanRecord.length);

                            Log.i(null,"Identifier check: " + ((int) scanRecord[startByte + 2] & 0xff) + " == " + 0x02);
                            Log.i(null,"Length of data : " + ((int) scanRecord[startByte + 3] & 0xff) + "==" + (0x15));
                            //Log.i(null," iBeacon Identifier: " + (scanRecord[startByte + 2] & 0xff));
                            if (((int) scanRecord[startByte + 2] & 0xff) == 0x02 && //Identifies an iBeacon
                                    ((int) scanRecord[startByte + 3] & 0xff) == 0x15) { //Identifies correct data length
                                patternFound = true;
                                break;
                            }
                            startByte++;
                        }

                        if (patternFound) {
                            //Convert to hex String
                            byte[] uuidBytes = new byte[16];
                            System.arraycopy(scanRecord,startByte+4,uuidBytes,16);
                            String hexString = bytesToHex(uuidBytes);

                            //Here is your UUID
                            String uuid =  hexString.substring(0,8) + "-" +
                                    hexString.substring(8,12) + "-" +
                                    hexString.substring(12,16) + "-" +
                                    hexString.substring(16,20) + "-" +
                                    hexString.substring(20,32);

                            //Here is your Major value
                            int major = (scanRecord[startByte+20] & 0xff) * 0x100 + (scanRecord[startByte+21] & 0xff);

                            //Here is your Minor value
                            int minor = (scanRecord[startByte+22] & 0xff) * 0x100 + (scanRecord[startByte+23] & 0xff);

                            System.out.println("-------------output------ : " + uuid + " maj: " + major + " min: " + minor );
                        }
                    }
                });
            }
        };
    }

这是输出:

nexus 7(工作):

02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ INSIDE ONLESCAN
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 0: 2
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 1: 1
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 2: 6
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 3: 26
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 4: -1
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 5: 76
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 6: 0
02-03 22:50:43.821    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 7: 2
02-03 22:50:43.821    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 8: 21
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 9: 47
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 10: 35
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 11: 68
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 12: 84
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 13: -49
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 14: 109
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 15: 74
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 16: 15
02-03 22:50:43.841    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 17: -83
02-03 22:50:43.841    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 18: -14
02-03 22:50:43.841    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 19: -12
02-03 22:50:43.841    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 20: -111
02-03 22:50:43.841    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 21: 27
02-03 22:50:43.841    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 22: -87
02-03 22:50:43.841    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 23: -1
02-03 22:50:43.851    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 24: -90
02-03 22:50:43.851    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 25: 0
02-03 22:50:43.851    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 26: 4
02-03 22:50:43.851    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 27: 0
02-03 22:50:43.851    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 28: 101
02-03 22:50:43.851    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 29: -76
02-03 22:50:43.851    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 30: 0
... (all 0''s)
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 61: 0
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 255 == 2
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 76==21
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 76 == 2
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 0==21
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 0 == 2
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 2==21
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 2 == 2
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 21==21
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/System.out﹕ -------------output------ : 2F234454-CF6D-4A0F-ADF2-F4911BA9FFA6 maj: 4 min: 101
02-03 22:50:43.912    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Calling stopLeScan

smartwatch(不工作):

2-03 22:53:37.374    6177-6189/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ onScanResult() - Device=E5:E0:20:CF:63:32 RSSI=-46
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ INSIDE ONLESCAN
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 0: 2
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 1: 1
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 2: 0
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 3: 0
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 4: 0
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 5: 0
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 6: 0
... (all 0''s)
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 61: 0
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 0 == 2
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 0==21
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 0 == 2
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 0==21
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 0 == 2
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 0==21
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 0 == 2
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 0==21
02-03 22:53:37.643    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Calling stopLeScan
02-03 22:53:37.643    6177-6177/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ stopLeScan()
02-03 22:53:37.743    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Calling stopLeScan
02-03 22:53:37.743    6177-6177/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ stopLeScan()

解决方法

由于您使用Nexus 7确认信标的Mac地址为E5:E0:20:CF:63:32,您会看到该手表的广告显示为:

0201000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

虽然Nexus 7将其读作一个非常不同的字节序列:

02011a0bff4c0009060102c0a801130000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

我必须得出结论,手表没有正确读取BLE制造商的广告 – 它在两个字节后截断它们.

问题可能是MTK6572 ROM,硬件或两者协同工作的方式.为了其他人,可能值得记录完整的手表配置.

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