blocks|key|4069936|text|如果你是在模拟器上运行admob广告，那么就没有If。只需使用AdManager方法并将其设置为TEST_EMULATOR，就像logcat所说的那样。如果你在一个实际的usb调试设备上运行，并观察logcat，ID就会出现在那里。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4069937|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

If you are running admob ads on an emulator then there is no ID. just use the AdManager method and set it to TEST_EMULATOR like the logcat says. If you run on an actual device with usb debugging and watch the logcat, the ID will appear in there.

blocks|key|2473593|text|如果您正在使用XML+layout显示广告，并且您的布局XML文件中已经有"ads:testDevices=“，AdMob将不会打印"To+get+test+ads+on+this+device...”LogCat输出中的消息。取出它，然后您将看到LogCat消息。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2473594|这里有一个关于如何在LogCat：http://webhole.net/2011/12/02/android-sdk-tutorial-get-admob-test-device-id/中查找设备id的很好的教程|offset|length|2473595|entityMap|0|LINK|mutability|MUTABLE|url|http://webhole.net/2011/12/02/android-sdk-tutorial-get-admob-test-device-id/^0|0|H|24|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

If you are displaying ads using XML layout and if you already have "ads:testDevices=" in your layout XML file, AdMob will NOT print the "To get test ads on this device..." message in the LogCat output. Take that out and then you will see the LogCat message.

Here is a nice tutorial on how to find device id in LogCat: 
<a href="http://webhole.net/2011/12/02/android-sdk-tutorial-get-admob-test-device-id/" rel="noreferrer">http://webhole.net/2011/12/02/android-sdk-tutorial-get-admob-test-device-id/</a>

blocks|key|2473651|text|如果您仅在Emulator或少数设备上进行测试，则接受的答案将起作用，但如果您在大量设备上进行测试，则可能需要按比例添加正在运行的设备的设备ID。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2473652|以下代码将以编程方式将当前运行的设备转换为adview测试设备|2473653|...
++++if(YourApplication.debugEnabled(this))+//debug+flag+from+somewhere+that+you+set
++++{

++++++++String+android_id+=+Settings.Secure.getString(this.getContentResolver(),+Settings.Secure.ANDROID_ID);
++++++++String+deviceId+=+md5(android_id).toUpperCase();
++++++++mAdRequest.addTestDevice(deviceId);
++++++++boolean+isTestDevice+=+mAdRequest.isTestDevice(this);

++++++++Log.v(TAG,+"is+Admob+Test+Device+?+"%2BdeviceId%2B"+"%2BisTestDevice);+//to+confirm+it+worked
++++}|code-block|syntax|javascript|2473654|您需要使用Android+ID的md5，且必须为大写。下面是我使用的md5代码|2473655|public+static+final+String+md5(final+String+s)+{
++++try+{
++++++++//+Create+MD5+Hash
++++++++MessageDigest+digest+=+java.security.MessageDigest
++++++++++++++++.getInstance("MD5");
++++++++digest.update(s.getBytes());
++++++++byte+messageDigest[]+=+digest.digest();

++++++++//+Create+Hex+String
++++++++StringBuffer+hexString+=+new+StringBuffer();
++++++++for+(int+i+=+0;+i+<+messageDigest.length;+i%2B%2B)+{
++++++++++++String+h+=+Integer.toHexString(0xFF+&+messageDigest[i]);
++++++++++++while+(h.length()+<+2)
++++++++++++++++h+=+"0"+%2B+h;
++++++++++++hexString.append(h);
++++++++}
++++++++return+hexString.toString();

++++}+catch+(NoSuchAlgorithmException+e)+{
++++++++Logger.logStackTrace(TAG,e);
++++}
++++return+"";
}|2473656|编辑:显然，MD5的方法并不完美，有人建议尝试https://stackoverflow.com/a/21333739/2662474我不再需要这个功能了，所以我没有测试。祝好运!|offset|length|2473657|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/21333739/2662474^0|0|0|0|0|0|N|18|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|12|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|13|8|@]|9|@$O|14|P|15|1|16]]|A|$]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

The accepted answers will work if you are only testing on the Emulator or on a few devices, but if you are testing on a plethora of devices, you may need some means of prorammatically adding the running device's device ID.

The following code will make the current running device into an adview test device programmatically

<pre><code>...
 if(YourApplication.debugEnabled(this)) //debug flag from somewhere that you set
 {

 String android_id = Settings.Secure.getString(this.getContentResolver(), Settings.Secure.ANDROID_ID);
 String deviceId = md5(android_id).toUpperCase();
 mAdRequest.addTestDevice(deviceId);
 boolean isTestDevice = mAdRequest.isTestDevice(this);

 Log.v(TAG, "is Admob Test Device ? "+deviceId+" "+isTestDevice); //to confirm it worked
 }
</code></pre>

You need to use the md5 of the Android ID, and it needs to be upper case. Here is the md5 code I used

<pre><code>public static final String md5(final String s) {
 try {
 // Create MD5 Hash
 MessageDigest digest = java.security.MessageDigest
 .getInstance("MD5");
 digest.update(s.getBytes());
 byte messageDigest[] = digest.digest();

 // Create Hex String
 StringBuffer hexString = new StringBuffer();
 for (int i = 0; i &lt; messageDigest.length; i++) {
 String h = Integer.toHexString(0xFF &amp; messageDigest[i]);
 while (h.length() &lt; 2)
 h = "0" + h;
 hexString.append(h);
 }
 return hexString.toString();

 } catch (NoSuchAlgorithmException e) {
 Logger.logStackTrace(TAG,e);
 }
 return "";
}
</code></pre>

EDIT: Apparently that MD5 method isnt perfect, and it was suggested to try <a href="https://stackoverflow.com/a/21333739/2662474">https://stackoverflow.com/a/21333739/2662474</a> I no longer need this feature so I havent tested. Good luck!

blocks|key|406357|text|获取散列设备ID|type|unstyled|depth|inlineStyleRanges|entityRanges|data|406358|在oncreate中|406359|String+android_id+=+Settings.Secure.getString(this.getContentResolver(),+Settings.Secure.ANDROID_ID);
++++++++String+deviceId+=+md5(android_id).toUpperCase();
Log.i("device+id=",deviceId);|code-block|syntax|javascript|406360|然后为md5+()添加这个类|406361|public+String+md5(String+s)+{
++++++++try+{
++++++++++++//+Create+MD5+Hash
++++++++++++MessageDigest+digest+=+java.security.MessageDigest.getInstance("MD5");
++++++++++++digest.update(s.getBytes());
++++++++++++byte+messageDigest[]+=+digest.digest();

++++++++++++//+Create+Hex+String
++++++++++++StringBuffer+hexString+=+new+StringBuffer();
++++++++++++for+(int+i=0;+i<messageDigest.length;+i%2B%2B)
++++++++++++++++hexString.append(Integer.toHexString(0xFF+&+messageDigest[i]));
++++++++++++return+hexString.toString();

++++++++}+catch+(NoSuchAlgorithmException+e)+{
++++++++++++e.printStackTrace();
++++++++}
++++++++return+"";
++++}|406362|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

To get the Hash Device ID 

inside the oncreate 

<pre><code>String android_id = Settings.Secure.getString(this.getContentResolver(), Settings.Secure.ANDROID_ID);
 String deviceId = md5(android_id).toUpperCase();
Log.i("device id=",deviceId);
</code></pre>

then add this class for md5 ()

<pre><code>public String md5(String s) {
 try {
 // Create MD5 Hash
 MessageDigest digest = java.security.MessageDigest.getInstance("MD5");
 digest.update(s.getBytes());
 byte messageDigest[] = digest.digest();

 // Create Hex String
 StringBuffer hexString = new StringBuffer();
 for (int i=0; i&lt;messageDigest.length; i++)
 hexString.append(Integer.toHexString(0xFF &amp; messageDigest[i]));
 return hexString.toString();

 } catch (NoSuchAlgorithmException e) {
 e.printStackTrace();
 }
 return "";
 }
</code></pre>

blocks|key|4070136|text|文档中类似于Google+Ads的内容：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4070137|4070138|+公共AdRequest.Builder+addTestDevice+(String+deviceId)|blockquote|offset|length|style|BOLD|4070139|4070140|使设备接收测试广告。+deviceId可以通过在创建新ad后查看logcat输出来获得。对于仿真器，请使用DEVICE_ID_EMULATOR。|4070141|4070142|例如，我在LogCat中显示的测试设备id是"B86BC9402A69B031A516BC57F7D3063F"：|CODE|4070143|AdRequest+adRequest+=+new+AdRequest.Builder()+
++++++++.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
++++++++.addTestDevice("B86BC9402A69B031A516BC57F7D3063F")
++++++++.build();|code-block|syntax|javascript|4070144|entityMap^0|0|0|1|1F|0|0|A|Y|0|0|M|Y|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|Z|8|@$F|10|G|11|H|I]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|12|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|13|8|@$F|14|G|15|H|I]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|16|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|17|8|@$F|18|G|19|H|P]]|9|@]|A|$]]|$1|Q|3|R|5|S|7|1A|8|@]|9|@]|A|$T|U]]|$1|V|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|W|$]]

Something similar to Google Ads, from the documentation:

<blockquote>
 public AdRequest.Builder addTestDevice (String deviceId)
 
 Causes a device to receive test ads. The deviceId can be obtained by
 viewing the logcat output after creating a new ad. For emulators, use
 DEVICE_ID_EMULATOR.
</blockquote>

for example my Test Device id displayed in LogCat is <code>"B86BC9402A69B031A516BC57F7D3063F"</code>: 

<pre><code>AdRequest adRequest = new AdRequest.Builder() 
 .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
 .addTestDevice("B86BC9402A69B031A516BC57F7D3063F")
 .build();
</code></pre>

blocks|key|4070180|text|如果你正在实际的设备上测试你的应用程序，那么你可以试试这个小的android应用程序，它会给你提供设备id：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4070181|https://play.google.com/store/apps/details?id=pe.go_com.admobdeviceidfinder&hl=en|offset|length|4070182|您将直接获得散列的设备id。希望这能有所帮助。|4070183|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|29|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@$D|Q|E|R|1|S]]|A|$]]|$1|F|3|G|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|U|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|C]]]]

If you are testing your app on actual device then you can try this small android app which gives you the device id:

<a href="https://play.google.com/store/apps/details?id=pe.go_com.admobdeviceidfinder&amp;hl=en" rel="noreferrer">https://play.google.com/store/apps/details?id=pe.go_com.admobdeviceidfinder&amp;hl=en</a>

You will get the hashed device id directly.
Hope this helps.

blocks|key|2473810|text|我有一些正在测试的设备，不想手动获取每个设备的DeviceID。这里以编程方式获取DeviceID的答案对我不起作用(缺少零)，这导致显示真实广告而不是测试广告。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2473811|我将它放在我的应用程序类onCreate中，然后使用一个getter方法公开deviceId，以便可以从头到尾访问它。|2473812|@Override
public+void+onCreate()+{++++++++
++++super.onCreate();

++++String+androidId+=++Settings.Secure.getString(this.getContentResolver(),+Settings.Secure.ANDROID_ID);
++++deviceId+=+MD5(androidId).toUpperCase();++++++++
}++

public+static+String+getDeviceId()+{
++++return+deviceId;
}

private+static+String+deviceId;|code-block|syntax|javascript|2473813|和MD5方法；|2473814|public+String+MD5(String+md5)+{
+++try+{
++++++++java.security.MessageDigest+md+=+java.security.MessageDigest.getInstance("MD5");
++++++++byte[]+array+=+md.digest(md5.getBytes());
++++++++StringBuffer+sb+=+new+StringBuffer();
++++++++for+(int+i+=+0;+i+<+array.length;+%2B%2Bi)+{
++++++++++++sb.append(Integer.toHexString((array[i]+&+0xFF)+%7C+0x100).substring(1,3));
++++++++}
++++++++return+sb.toString();
++++}+catch+(java.security.NoSuchAlgorithmException+e)+{
++++}
++++return+null;
}|2473815|然后，每当我创建一个AdRequest对象时，就使用这个：|2473816|if(BuildConfig.DEBUG)+{
+++++AdRequest+adRequest+=+new+AdRequest.Builder()
++++++++++.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
++++++++++.addTestDevice(Application.getDeviceId())
++++++++++.build();
+++++adView.loadAd(adRequest);
}+else+{
+++++AdRequest+adRequest+=+new+AdRequest.Builder()
++++++++++.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
++++++++++.build();
+++++adView.loadAd(adRequest);
}|2473817|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

I have a few devices I was testing on, and didn't want to manually get the DeviceID for each one. The answers here to programmatically get the DeviceIDs were not working for me (Missing zeros) which caused real ads to be shown instead of test ads.

I put this in my Application class onCreate, and then exposed deviceId using a getter method so that it can be accessed throughout.

<pre><code>@Override
public void onCreate() { 
 super.onCreate();

 String androidId = Settings.Secure.getString(this.getContentResolver(), Settings.Secure.ANDROID_ID);
 deviceId = MD5(androidId).toUpperCase(); 
} 

public static String getDeviceId() {
 return deviceId;
}

private static String deviceId;
</code></pre>

And the MD5 method;

<pre><code>public String MD5(String md5) {
 try {
 java.security.MessageDigest md = java.security.MessageDigest.getInstance("MD5");
 byte[] array = md.digest(md5.getBytes());
 StringBuffer sb = new StringBuffer();
 for (int i = 0; i &lt; array.length; ++i) {
 sb.append(Integer.toHexString((array[i] &amp; 0xFF) | 0x100).substring(1,3));
 }
 return sb.toString();
 } catch (java.security.NoSuchAlgorithmException e) {
 }
 return null;
}
</code></pre>

Then using this whenever I create an AdRequest object:

<pre><code>if(BuildConfig.DEBUG) {
 AdRequest adRequest = new AdRequest.Builder()
 .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
 .addTestDevice(Application.getDeviceId())
 .build();
 adView.loadAd(adRequest);
} else {
 AdRequest adRequest = new AdRequest.Builder()
 .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
 .build();
 adView.loadAd(adRequest);
}
</code></pre>

blocks|key|406492|text|如果你没有得到它在日志，只要放入任何设备id，加载你的Ads，然后运行你的应用程序，然后转到日志，你会得到它像那个I/Ads:+Use+AdRequest.Builder.addTestDevice("XXXXXXXXXXXXXXXXXXXXXXXXX")+to+get+test+ads+on+this+device.，然后放它，并再次运行你的应用程序。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|406493|entityMap^0|9|2|I|4|R|3|1L|2V|0^^$0|@$1|2|3|4|5|6|7|I|8|@$9|J|A|K|B|C]|$9|L|A|M|B|C]|$9|N|A|O|B|C]|$9|P|A|Q|B|D]]|E|@]|F|$]]|$1|G|3|-4|5|6|7|R|8|@]|E|@]|F|$]]]|H|$]]

If you don't get it in the logcat just put any device id and load you Ads and run your app then go to the log you will get it like that <code>I/Ads: Use AdRequest.Builder.addTestDevice("XXXXXXXXXXXXXXXXXXXXXXXXX") to get test ads on this device.</code> after that put it and run your application again.

blocks|key|4070330|text|显示测试广告的另一种最简单的方法是使用横幅的测试设备id来显示所有设备的admob测试广告。"ca-app-pub-3940256099942544/6300978111“。这个admob测试广告id被记录在google：link的admob教程中。以下是上述链接中的引用：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|4070331|📷|atomic|4070332|​|4070333|4070334|这是interstitial+"ca-app-pub-3940256099942544/1033173712“的测试设备id。这也在interstitial+tutorial|unordered-list-item|4070335|中使用过|4070336|entityMap|0|LINK|mutability|MUTABLE|url|https://developers.google.com/admob/android/quick-start|1|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/50e4c51f2c2a319a30cb713f763838cf.png|imageAlt|2|https://developers.google.com/admob/android/interstitial^0|19|2K|33|4|0|0|0|1|0|1|1|0|0|1|0|0|0|2F|1U|L|2|0|0|4|0^^$0|@$1|2|3|4|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@$9|19|A|1A|1|1B]]|E|$]]|$1|F|3|G|5|H|7|1C|8|@$9|1D|A|1E|B|C]]|D|@$9|1F|A|1G|1|1H]]|E|$]]|$1|I|3|J|5|6|7|1I|8|@$9|1J|A|1K|B|C]]|D|@]|E|$]]|$1|K|3|-4|5|6|7|1L|8|@]|D|@]|E|$]]|$1|L|3|M|5|N|7|1M|8|@$9|1N|A|1O|B|C]]|D|@$9|1P|A|1Q|1|1R]]|E|$]]|$1|O|3|P|5|6|7|1S|8|@$9|1T|A|1U|B|C]]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|1V|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|X]]|Y|$5|Z|U|10|E|$11|12|13|-4]]|14|$5|T|U|V|E|$W|15]]]]

Another easiest way to show test ads is to use test device id for banner to show admob test ads for all devices. "ca-app-pub-3940256099942544/6300978111" . This admob test ads id was noted in the admob tutorial of google: <a href="https://developers.google.com/admob/android/quick-start" rel="noreferrer">link</a>.
This is the quote from the above link:
<a href="https://i.stack.imgur.com/k5yor.png" rel="noreferrer"><img src="https://i.stack.imgur.com/k5yor.png" alt="enter image description here"></a>

<ul>
<li>This is the test device id for interstitial "ca-app-pub-3940256099942544/1033173712" . This also was used in <a href="https://developers.google.com/admob/android/interstitial" rel="noreferrer">interstitial tutorial</a></li>
</ul>

blocks|key|1554760|text|app：build.gradle|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1554761|dependencies+{
...
compile+'com.google.firebase:firebase-ads:10.0.1'
...
}|code-block|syntax|javascript|1554762|您的活动：|1554763|+AdRequest.Builder+builder+=+new+AdRequest.Builder();
++++++++if(BuildConfig.DEBUG){

++++++++++++String+android_id+=+Settings.Secure.getString(context.getContentResolver(),+Settings.Secure.ANDROID_ID);
++++++++++++String+deviceId+=+io.fabric.sdk.android.services.common.CommonUtils.md5(android_id).toUpperCase();
++++++++++++builder.addTestDevice(deviceId);
++++++++}
++++++++AdRequest+adRequest+=+builder.build();
++++adView.loadAd(adRequest);|1554764|entityMap^0|4|C|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

app: <code>build.gradle</code>

<pre><code>dependencies {
...
compile 'com.google.firebase:firebase-ads:10.0.1'
...
}
</code></pre>

Your Activity:

<pre><code> AdRequest.Builder builder = new AdRequest.Builder();
 if(BuildConfig.DEBUG){

 String android_id = Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ANDROID_ID);
 String deviceId = io.fabric.sdk.android.services.common.CommonUtils.md5(android_id).toUpperCase();
 builder.addTestDevice(deviceId);
 }
 AdRequest adRequest = builder.build();
 adView.loadAd(adRequest);
</code></pre>

blocks|key|2474055|text|是这样工作的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2474056|InterstitialAd+mInterstitial+=+new+InterstitialAd(this);
++++mInterstitial.setAdUnitId("your+id");
++++AdRequest+adRequest+=+new+AdRequest.Builder()
++++.addTestDevice("some+words")
++++.build();
++++mInterstitial.loadAd(adRequest);|code-block|syntax|javascript|2474057|在运行应用程序之后...Go在Logcat中输入Verbose，在搜索字段AdRequest中输入，因此id设备显示为donw。|2474058|​|2474059|📷|atomic|offset|length|2474060|2474061|.addTestDevice(“把id放在这里”)；|2474062|我希望能有所帮助；|2474063|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/829eae33418144c95aef0112216914ed.png|imageAlt^0|0|0|0|0|0|1|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|14|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|15|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|16|8|@]|9|@]|A|$]]|$1|K|3|L|5|M|7|17|8|@]|9|@$N|18|O|19|1|1A]]|A|$]]|$1|P|3|J|5|6|7|1B|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1C|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1D|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11|12|-4]]]]

Works to this way:

<pre><code>InterstitialAd mInterstitial = new InterstitialAd(this);
 mInterstitial.setAdUnitId("your id");
 AdRequest adRequest = new AdRequest.Builder()
 .addTestDevice("some words")
 .build();
 mInterstitial.loadAd(adRequest);
</code></pre>

After run the app...
Go in Logcat put in Verbose put in the search field AdRequest, so the id device shows donw.

<a href="https://i.stack.imgur.com/0omXo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0omXo.png" alt="enter image description here"></a>

.addTestDevice("put the id here");

I hope have helped;

blocks|key|406786|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|406787|是您在Play+store上发布的应用程序--带有实时广告|unordered-list-item|406788|406789|如果你的应用程序在Play+store上显示实时广告--你不能使用实时广告进行测试--在代码中添加你的设备ID，就可以在你的真实设备上从Admob获得测试广告。不要在开发或测试期间使用直播广告。|406790|在logcat、中获取真实设备ID的|406791|406792|将您的设备以USB调试模式连接到Android+Studio|ordered-list-item|offset|length|style|BOLD|406793|406794|​|406795|📷|atomic|406796|406797|在您的设备上显示Admob直播广告的任何应用程序:在连接的设备上，如果您的应用程序是从play+store下载的(显示直播广告)，请打开该应用程序或打开显示直播Admob广告的任何其他应用程序。你的设备应该有一个带有‘connection.|406798|Filter’的互联网设备，如下所示，以获取测试设备|406799|406800|406801|406802|406803|有关更多信息，请阅读Admob+ad+testing+on+device+-+device+IDs+can+change|406804|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/e0ddd08d328095f8493be26b1919a24a.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/c584ff349edb52a267fe6391cdb2a5ed.png|2|LINK|MUTABLE|url|https://publishingfirstandroidapp.blogspot.com/2017/08/admob-ad-testing-on-device-device-ids.html^0|0|0|0|0|0|0|0|U|0|0|0|1|0|0|1|0|1|0|0|0|1|0|0|3C|0|0|Q|0|0|0|1|0|0|1|0|1|1|0|0|1|0|0|1O|A|1E|2|0^^$0|@$1|2|3|-4|4|5|6|1N|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|1O|7|@]|8|@]|9|$]]|$1|D|3|-4|4|5|6|1P|7|@]|8|@]|9|$]]|$1|E|3|F|4|5|6|1Q|7|@]|8|@]|9|$]]|$1|G|3|H|4|5|6|1R|7|@]|8|@]|9|$]]|$1|I|3|-4|4|5|6|1S|7|@]|8|@]|9|$]]|$1|J|3|K|4|L|6|1T|7|@$M|1U|N|1V|O|P]]|8|@]|9|$]]|$1|Q|3|-4|4|5|6|1W|7|@]|8|@]|9|$]]|$1|R|3|S|4|5|6|1X|7|@$M|1Y|N|1Z|O|P]]|8|@]|9|$]]|$1|T|3|U|4|V|6|20|7|@$M|21|N|22|O|P]]|8|@$M|23|N|24|1|25]]|9|$]]|$1|W|3|S|4|5|6|26|7|@$M|27|N|28|O|P]]|8|@]|9|$]]|$1|X|3|Y|4|5|6|29|7|@$M|2A|N|2B|O|P]]|8|@]|9|$]]|$1|Z|3|10|4|C|6|2C|7|@$M|2D|N|2E|O|P]]|8|@]|9|$]]|$1|11|3|-4|4|5|6|2F|7|@]|8|@]|9|$]]|$1|12|3|S|4|5|6|2G|7|@$M|2H|N|2I|O|P]]|8|@]|9|$]]|$1|13|3|U|4|V|6|2J|7|@$M|2K|N|2L|O|P]]|8|@$M|2M|N|2N|1|2O]]|9|$]]|$1|14|3|S|4|5|6|2P|7|@$M|2Q|N|2R|O|P]]|8|@]|9|$]]|$1|15|3|16|4|5|6|2S|7|@$M|2T|N|2U|O|P]]|8|@$M|2V|N|2W|1|2X]]|9|$]]|$1|17|3|-4|4|5|6|2Y|7|@]|8|@]|9|$]]]|18|$19|$4|1A|1B|1C|9|$1D|1E|1F|-4]]|1G|$4|1A|1B|1C|9|$1D|1H|1F|-4]]|1I|$4|1J|1B|1K|9|$1L|1M]]]]

<ul>
<li>Is your app published on Play store -- with live ads:</li>
</ul>

If your app is on Play store showing live ads -- you can't use live ads for testing -- add your device ID in code to get test ads from Admob on your real device. Never use live ads during development or testing.

To get real device ID in logcat, 

<ol>
<li>Connect your device in USB debug mode to Android Studio</li>
</ol>

<a href="https://i.stack.imgur.com/wNTiu.png" rel="noreferrer"><img src="https://i.stack.imgur.com/wNTiu.png" alt="USB debug mode(Developer option)"></a>

<ol start="2">
<li>Open any app on your device which shows live ads from Admob: On the connected device, if you have your app downloaded from play store(showing live ads) open that app or else open any other app that shows live Admob ads. Your device should have an internet connection.</li>
<li>Filter the logcat with 'device' as shown below to get test device</li>
</ol>

<a href="https://i.stack.imgur.com/pGqTU.png" rel="noreferrer"><img src="https://i.stack.imgur.com/pGqTU.png" alt="Test Device ID in logcat"></a>

Read <a href="https://publishingfirstandroidapp.blogspot.com/2017/08/admob-ad-testing-on-device-device-ids.html" rel="noreferrer">Admob ad testing on device - device IDs can change</a> for more

blocks|key|2474160|text|将此类添加到您的项目中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2474161|import+android.content.Context;
import+android.provider.Settings;
import+android.text.TextUtils;

import+com.google.android.gms.ads.AdRequest;
import+java.io.UnsupportedEncodingException;

public+class+AdsHelper+{
public+static+AdRequest+createRequest(Context+context)+{
++++AdRequest.Builder+adRequest+=+new+AdRequest.Builder();
++++adRequest.addTestDevice(AdRequest.DEVICE_ID_EMULATOR);
++++if+(BuildConfig.DEBUG)+{
++++++++String+deviceId+=+MD5(getDeviceId(context));
++++++++if+(!TextUtils.isEmpty(deviceId))+{
++++++++++++adRequest.addTestDevice(deviceId.toUpperCase());
++++++++}
++++}

++++return+adRequest.build();
}



++++private+static+String+MD5(String+md5)+{
++++++++if+(TextUtils.isEmpty(md5))+return+null;
++++++++try+{
++++++++++++java.security.MessageDigest+md+=+java.security.MessageDigest.getInstance("MD5");
++++++++++++byte[]+array+=+md.digest(md5.getBytes("UTF-8"));
++++++++++++StringBuilder+sb+=+new+StringBuilder();
++++++++++++for+(byte+anArray+:+array)+{
++++++++++++++++sb.append(Integer.toHexString((anArray+&+0xFF)+%7C+0x100).substring(1,+3));
++++++++++++}
++++++++++++return+sb.toString();
++++++++}+catch+(java.security.NoSuchAlgorithmException+ignored)+{
++++++++}+catch(UnsupportedEncodingException+ignored){
++++++++}
++++++++return+null;
++++}

++++private+static+String+getDeviceId(Context+context)+{
++++++++try+{
++++++++++++return+Settings.Secure.getString(context.getContentResolver(),+Settings.Secure.ANDROID_ID);
++++++++}+catch+(Exception+e)+{
++++++++++++return+"";
++++++++}

++++}
}|code-block|syntax|javascript|2474162|用法：|2474163|AdRequest+adRequest+=+AdsHelper.createRequest(this);|2474164|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Add this class to your project

<pre><code>import android.content.Context;
import android.provider.Settings;
import android.text.TextUtils;

import com.google.android.gms.ads.AdRequest;
import java.io.UnsupportedEncodingException;

public class AdsHelper {
public static AdRequest createRequest(Context context) {
 AdRequest.Builder adRequest = new AdRequest.Builder();
 adRequest.addTestDevice(AdRequest.DEVICE_ID_EMULATOR);
 if (BuildConfig.DEBUG) {
 String deviceId = MD5(getDeviceId(context));
 if (!TextUtils.isEmpty(deviceId)) {
 adRequest.addTestDevice(deviceId.toUpperCase());
 }
 }

 return adRequest.build();
}



 private static String MD5(String md5) {
 if (TextUtils.isEmpty(md5)) return null;
 try {
 java.security.MessageDigest md = java.security.MessageDigest.getInstance("MD5");
 byte[] array = md.digest(md5.getBytes("UTF-8"));
 StringBuilder sb = new StringBuilder();
 for (byte anArray : array) {
 sb.append(Integer.toHexString((anArray &amp; 0xFF) | 0x100).substring(1, 3));
 }
 return sb.toString();
 } catch (java.security.NoSuchAlgorithmException ignored) {
 } catch(UnsupportedEncodingException ignored){
 }
 return null;
 }

 private static String getDeviceId(Context context) {
 try {
 return Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ANDROID_ID);
 } catch (Exception e) {
 return "";
 }

 }
}
</code></pre>

Usage:

<pre><code>AdRequest adRequest = AdsHelper.createRequest(this);
</code></pre>

blocks|key|406868|text|要获取设备id，请将您的手机连接到USB，并使用以下代码在android+studio中打开logcat+(确保您的设备中启用了USB调试)。然后打开任何应用程序(从播放商店下载任何随机的应用程序)，其中有谷歌广告。在Logcat中输入"set“，如图所示。您的设备id在图像中突出显示为|type|unstyled|depth|inlineStyleRanges|entityRanges|data|406869|setTestDeviceIds(Arrays.asList("CC9DW7W7R4H0NM3LT9OLOF7455F8800D")).|offset|length|style|BOLD|406870|​|406871|📷|atomic|406872|406873|在代码中使用测试设备，如下所示|406874|val+adRequest+=+AdRequest
++++++++.Builder()
++++++++.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
++++++++.addTestDevice("CC9DW7W7R4H0NM3LT9OLOF7455F8800D")
++++++++.build()|code-block|syntax|javascript|406875|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/0e2b06b77c2e341bf1936c84b5a5ac01.png|imageAlt^0|0|0|1V|0|0|0|1|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|14|8|@$D|15|E|16|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|17|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|18|8|@]|9|@$D|19|E|1A|1|1B]]|A|$]]|$1|M|3|I|5|6|7|1C|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1D|8|@]|9|@]|A|$]]|$1|P|3|Q|5|R|7|1E|8|@]|9|@]|A|$S|T]]|$1|U|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11|12|-4]]]]

To get the device id, connect your phone to USB and open logcat in android studio
Use the code below (make sure you have USB debugging enabled in your device).
Then open any app (download any random app from play store) which has google Ad. In the Logcat type "set" as shown in the image. Your device id is shown highlighted in the image as 

setTestDeviceIds(Arrays.asList("CC9DW7W7R4H0NM3LT9OLOF7455F8800D")).

<a href="https://i.stack.imgur.com/KC7XR.png" rel="noreferrer"><img src="https://i.stack.imgur.com/KC7XR.png" alt="enter image description here"></a>

Use the Test Device in your code as shown

<pre><code>val adRequest = AdRequest
 .Builder()
 .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
 .addTestDevice("CC9DW7W7R4H0NM3LT9OLOF7455F8800D")
 .build()
</code></pre>

blocks|key|1552639|text|对于Emulator，不需要在“测试设备”中添加设备|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1552640|对于真实设备，找到如下广告ID并添加到Admob帐户|1552641|📷|atomic|offset|length|1552642|​|1552643|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/ec3fa8f693212393016e92fd515b470d.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|V|8|@]|9|@$G|W|H|X|1|Y]]|A|$]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R|S|-4]]]]

For Emulator, there is no need to add device in &quot;Testing Device&quot; 
For Real Device, Find Advertising ID as below and add into Admob Account
<a href="https://i.stack.imgur.com/OG35q.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OG35q.png" alt="enter image description here" /></a>

blocks|key|406954|text|我在我的一个项目中使用了这段代码。希望对每个人都有帮助:)+Rajji|type|unstyled|depth|inlineStyleRanges|entityRanges|data|406955|public+String+getDeviceId(){
++++MessageDigest+messageDigest+=+MessageDigest.getInstance("MD5");
++++String+androidId+=+
++Settings.Secure.getString((ContentResolver)this.getContentResolver(),"android_id");
++++messageDigest.update(androidId.getBytes());
++++byte[]+arrby+=+messageDigest.digest();
++++StringBuffer+sb+=+new+StringBuffer();
++++int+n+=+arrby.length;
++++for(int+i=0;+i<n;+%2B%2Bi){
++++++++String+oseamiya+=+Integer.toHexString((int)(255+&+arrby[i])));
++++++++while(oseamiya.length()+<+2){
++++++++++++oseamiya+=+"0"+%2B+oseamiya;
++++++++}
++++++++sb.append(oseamiya);
++++}
++++try{
++++++++String+result+=+sb.toString();
++++++++return+result;
++++}catch(NoSuchAlgorithmException+e){
++++++++e.printStackTrace();
++++++++return+"";
++++}

}|code-block|syntax|javascript|406956|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I've used this code for one of my project. Hope it helps everyone :) Rajji
<pre><code>public String getDeviceId(){
 MessageDigest messageDigest = MessageDigest.getInstance(&quot;MD5&quot;);
 String androidId = 
 Settings.Secure.getString((ContentResolver)this.getContentResolver(),&quot;android_id&quot;);
 messageDigest.update(androidId.getBytes());
 byte[] arrby = messageDigest.digest();
 StringBuffer sb = new StringBuffer();
 int n = arrby.length;
 for(int i=0; i&lt;n; ++i){
 String oseamiya = Integer.toHexString((int)(255 &amp; arrby[i])));
 while(oseamiya.length() &lt; 2){
 oseamiya = &quot;0&quot; + oseamiya;
 }
 sb.append(oseamiya);
 }
 try{
 String result = sb.toString();
 return result;
 }catch(NoSuchAlgorithmException e){
 e.printStackTrace();
 return &quot;&quot;;
 }

}
</code></pre>

blocks|key|2474329|text|Kotlin解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2474330|要获取当前设备ID，请执行以下操作：|2474331|@SuppressLint("HardwareIds")
private+fun+getDeviceIdForAdMobTestAds(context:+Context):+String?+{
++++val+md5+=+Settings.Secure.getString(context.contentResolver,+Settings.Secure.ANDROID_ID)
++++try+{
++++++++val+md+=+MessageDigest.getInstance("MD5")
++++++++val+array+=+md.digest(md5.toByteArray())
++++++++val+sb+=+StringBuilder()
++++++++for+(i+in+array.indices)
++++++++++++sb.append(Integer.toHexString(array[i].toInt()+and+0xFF+or+0x100).substring(1,+3))
++++++++return+sb.toString()
++++}+catch+(e:+NoSuchAlgorithmException)+{
++++}
++++return+null
}|code-block|syntax|javascript|2474332|用法：|2474333|val+deviceIds+=+arrayListOf(AdRequest.DEVICE_ID_EMULATOR)
getDeviceIdForAdMobTestAds(context)?.let+{+deviceIds.add(it.uppercase(Locale.ROOT))+}
MobileAds.setRequestConfiguration(RequestConfiguration.Builder().setTestDeviceIds(deviceIds).build())|2474334|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Kotlin solution:
To get the current device ID:
<pre><code>@SuppressLint(&quot;HardwareIds&quot;)
private fun getDeviceIdForAdMobTestAds(context: Context): String? {
 val md5 = Settings.Secure.getString(context.contentResolver, Settings.Secure.ANDROID_ID)
 try {
 val md = MessageDigest.getInstance(&quot;MD5&quot;)
 val array = md.digest(md5.toByteArray())
 val sb = StringBuilder()
 for (i in array.indices)
 sb.append(Integer.toHexString(array[i].toInt() and 0xFF or 0x100).substring(1, 3))
 return sb.toString()
 } catch (e: NoSuchAlgorithmException) {
 }
 return null
}
</code></pre>
Usage:
<pre><code>val deviceIds = arrayListOf(AdRequest.DEVICE_ID_EMULATOR)
getDeviceIdForAdMobTestAds(context)?.let { deviceIds.add(it.uppercase(Locale.ROOT)) }
MobileAds.setRequestConfiguration(RequestConfiguration.Builder().setTestDeviceIds(deviceIds).build())
</code></pre>

I'm using Eclipse to develop applications for android, and I want to integrate Admob to make money.
The tutorial says I should watch the LogCat to find ID, but where is it?
<img src="https://i.stack.imgur.com/hAF2V.png" alt="alt text">

When I run in either the test mode or the real mode, sometimes the eclipse will notify that Ads returned, yet it does not show in the emu... can anyone explain?

How can I get device ID for Admob

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在使用Eclipse为android开发应用程序，我想集成Admob来赚钱。教程说我应该观看LogCat来查找ID，但是它在哪里呢？​当我在测试模式或真实模式下运行时，有时eclipse会通知广告返回，但它不会在emu中显示。有谁能解释一下吗？

问如何获取Admob的设备ID
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