blocks|key|841555|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|841556|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|841639|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|841640|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|841641|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|841697|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|841698|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|841699|...
++++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|841700|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|841701|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+"";
}|841702|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|841703|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|841749|text|获取散列设备ID|type|unstyled|depth|inlineStyleRanges|entityRanges|data|841750|在oncreate中|841751|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|841752|然后为md5+()添加这个类|841753|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+"";
++++}|841754|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|841796|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|841797|https://play.google.com/store/apps/details?id=pe.go_com.admobdeviceidfinder&hl=en|offset|length|841798|您将直接获得散列的设备id。希望这能有所帮助。|841799|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|841875|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|841876|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。|841877|@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|841878|和MD5方法；|841879|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;
}|841880|然后，每当我创建一个AdRequest对象时，就使用这个：|841881|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);
}|841882|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|1056527|text|app：build.gradle|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1056528|dependencies+{
...
compile+'com.google.firebase:firebase-ads:10.0.1'
...
}|code-block|syntax|javascript|1056529|您的活动：|1056530|+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);|1056531|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|842061|text|是这样工作的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|842062|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|842063|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。|842064|​|842065|📷|atomic|offset|length|842066|842067|.addTestDevice(“把id放在这里”)；|842068|我希望能有所帮助；|842069|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|1056707|text|将此类添加到您的项目中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1056708|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|1056709|用法：|1056710|AdRequest+adRequest+=+AdsHelper.createRequest(this);|1056711|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|842191|text|对于Emulator，不需要在“测试设备”中添加设备|type|unstyled|depth|inlineStyleRanges|entityRanges|data|842192|对于真实设备，找到如下广告ID并添加到Admob帐户|842193|📷|atomic|offset|length|842194|​|842195|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|1056796|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|1056797|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|1056798|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|842255|text|Kotlin解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|842256|要获取当前设备ID，请执行以下操作：|842257|@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|842258|用法：|842259|val+deviceIds+=+arrayListOf(AdRequest.DEVICE_ID_EMULATOR)
getDeviceIdForAdMobTestAds(context)?.let+{+deviceIds.add(it.uppercase(Locale.ROOT))+}
MobileAds.setRequestConfiguration(RequestConfiguration.Builder().setTestDeviceIds(deviceIds).build())|842260|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
EN

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问如何获取Admob的设备IDEN