blocks|key|1089764|text|Android还不支持USSD。它有一个特性请求：http://code.google.com/p/android/issues/detail?id=1285|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1089765|entityMap|0|LINK|mutability|MUTABLE|url|http://code.google.com/p/android/issues/detail?id=1285^0|P|1I|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

USSD is not yet supported on Android. There is a feature request for it: <a href="http://code.google.com/p/android/issues/detail?id=1285">http://code.google.com/p/android/issues/detail?id=1285</a>

blocks|key|1089800|text|你可以使用下面的代码来调用android手机上的ussd代码来检查余额等......|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1089801|+++String+s=calledittext.getText.toString();//calledittext+is+editText+on+the+
++//screen+++from++which++can+get+the+number
++++++++++if((s.startsWith("*"))&&(s.endsWith("#"))){
++++++++++++//if+true+then+it+is+a+USSD+call----
++++++++++++callstring=s.substring(0,+s.length()-1);
++++++++++++callstring=callstring%2BUri.encode("#");

++++Log.d("CALL+TYPE---------->",+"USSD+CALL");+
++++++++}else{
++++++++++++callstring=s;+++
++++Log.d("CALL+TYPE---------->",+"Not+a+USSD+CALL");+++
++++//Intent+i=new+Intent(android.content.Intent.ACTION_CALL,Uri.parse("tel:"%2Boutput.getText().toString()));
++++//startActivity(i);
++++++++}
++++Intent+i=new+Intent(android.content.Intent.ACTION_CALL,Uri.parse("tel:"%2Bcallstring));
++++startActivity(i);|code-block|syntax|javascript|1089802|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|$]]

You can use the following code to call the ussd codes on android phone to check the balance and etc......

<pre><code> String s=calledittext.getText.toString();//calledittext is editText on the 
 //screen from which can get the number
 if((s.startsWith("*"))&amp;&amp;(s.endsWith("#"))){
 //if true then it is a USSD call----
 callstring=s.substring(0, s.length()-1);
 callstring=callstring+Uri.encode("#");

 Log.d("CALL TYPE----------&gt;", "USSD CALL"); 
 }else{
 callstring=s; 
 Log.d("CALL TYPE----------&gt;", "Not a USSD CALL"); 
 //Intent i=new Intent(android.content.Intent.ACTION_CALL,Uri.parse("tel:"+output.getText().toString()));
 //startActivity(i);
 }
 Intent i=new Intent(android.content.Intent.ACTION_CALL,Uri.parse("tel:"+callstring));
 startActivity(i);
</code></pre>

blocks|key|875191|text|我不完全确定，但我认为android还不支持USSD，但是你可以尝试这个变通方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|875192|startActivity(new+Intent("android.intent.action.CALL",Uri.parse("tel:*123"+%2B+Uri.encode("#")));|code-block|syntax|javascript|875193|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'm not completely sure but I think USSD is not yet supported on android, however you can try this workaround:

<pre><code>startActivity(new Intent("android.intent.action.CALL",Uri.parse("tel:*123" + Uri.encode("#")));
</code></pre>

blocks|key|1089868|text|Android暂不支持USSD调用interuptn|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1089869|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|$]]

USSD call interuptn is
 not yet supported n Android

blocks|key|1089915|text|您可以通过以下代码发送USSD代码，还需要添加权限(这应该是Marshmallow更新后的运行时权限)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1089916|++++<uses-permission+android:name="android.permission.CALL_PHONE"+/>

++++String+code+=+"*"+%2B+Uri.encode("#")+%2B+456+%2B+Uri.encode("#");
++++startActivity(new+Intent("android.intent.action.CALL",+Uri.parse("tel:"+%2B+code)));|code-block|syntax|javascript|1089917|你可以通过AccessibilityService读取ussd码。|offset|length|style|CODE|1089918|示例如下：|1089919|服务：|1089920|public+class+USSDService+extends+AccessibilityService+{
++++private+static+final+String+TAG+=+"USSDService";

++++@Override
++++public+void+onAccessibilityEvent(AccessibilityEvent+event)+{
++++++++Log.d(TAG,+"onAccessibilityEvent");
++++++++String+text+=+event.getText().toString();
++++++++Log.d(TAG,+text);
++++++++}
++++}

++++@Override
++++public+void+onInterrupt()+{

++++}

++++@Override
++++protected+void+onServiceConnected()+{
++++++++super.onServiceConnected();
++++++++Log.d(TAG,+"onServiceConnected");
++++++++AccessibilityServiceInfo+info+=+new+AccessibilityServiceInfo();
++++++++info.flags+=+AccessibilityServiceInfo.DEFAULT;
++++++++info.packageNames+=+new+String[]{"com.android.phone"};
++++++++info.eventTypes+=+AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED;
++++++++info.feedbackType+=+AccessibilityServiceInfo.FEEDBACK_GENERIC;
++++++++setServiceInfo(info);
++++}
}|1089921|AndroidManifest.xml：|1089922|<service+android:name=".services.USSDService"
++++++++++++++++android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE">
++++<intent-filter>
++++++++<action+android:name="android.accessibilityservice.AccessibilityService"+/>
++++</intent-filter>
++++<meta-data+android:name="android.accessibilityservice"
++++++++++++++++++++android:resource="@xml/config_service"+/>+//+created+below
</service>|1089923|res/xml/config_service.xml：|1089924|<?xml+version="1.0"+encoding="utf-8"?>
<accessibility-service+xmlns:android="http://schemas.android.com/apk/res/android"
++++android:accessibilityEventTypes="typeAllMask"
++++android:accessibilityFeedbackType="feedbackSpoken"
++++android:accessibilityFlags="flagDefault"
++++android:canRetrieveWindowContent="true"
++++android:description="@string/accessibility_description"
++++android:notificationTimeout="100"
++++android:packageNames="com.cootf.sims"
++++android:settingsActivity="com.example.android.accessibility.ServiceSettingsActivity"+/>|1089925|运行代码-->通过Settings+-->+accessibility+-->+Your+app+name+-->+Enable启用辅助功能。任务完成了！|1089926|entityMap^0|0|0|5|K|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|16|8|@$I|17|J|18|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|19|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|1A|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|1B|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|1C|8|@]|9|@]|A|$]]|$1|U|3|V|5|D|7|1D|8|@]|9|@]|A|$E|F]]|$1|W|3|X|5|6|7|1E|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|D|7|1F|8|@]|9|@]|A|$E|F]]|$1|10|3|11|5|6|7|1G|8|@]|9|@]|A|$]]|$1|12|3|-4|5|6|7|1H|8|@]|9|@]|A|$]]]|13|$]]

You can send a USSD code by below code and also you need to add permission (This should be a run time permission after Marshmallow update)

<pre><code> &lt;uses-permission android:name="android.permission.CALL_PHONE" /&gt;

 String code = "*" + Uri.encode("#") + 456 + Uri.encode("#");
 startActivity(new Intent("android.intent.action.CALL", Uri.parse("tel:" + code)));
</code></pre>

And you can read USSD codes by <code>AccessibilityService</code>

Here is the example:

Service:

<pre><code>public class USSDService extends AccessibilityService {
 private static final String TAG = "USSDService";

 @Override
 public void onAccessibilityEvent(AccessibilityEvent event) {
 Log.d(TAG, "onAccessibilityEvent");
 String text = event.getText().toString();
 Log.d(TAG, text);
 }
 }

 @Override
 public void onInterrupt() {

 }

 @Override
 protected void onServiceConnected() {
 super.onServiceConnected();
 Log.d(TAG, "onServiceConnected");
 AccessibilityServiceInfo info = new AccessibilityServiceInfo();
 info.flags = AccessibilityServiceInfo.DEFAULT;
 info.packageNames = new String[]{"com.android.phone"};
 info.eventTypes = AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED;
 info.feedbackType = AccessibilityServiceInfo.FEEDBACK_GENERIC;
 setServiceInfo(info);
 }
}
</code></pre>

AndroidManifest.xml :

<pre><code>&lt;service android:name=".services.USSDService"
 android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE"&gt;
 &lt;intent-filter&gt;
 &lt;action android:name="android.accessibilityservice.AccessibilityService" /&gt;
 &lt;/intent-filter&gt;
 &lt;meta-data android:name="android.accessibilityservice"
 android:resource="@xml/config_service" /&gt; // created below
&lt;/service&gt;
</code></pre>

res/xml/config_service.xml :

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
 android:accessibilityEventTypes="typeAllMask"
 android:accessibilityFeedbackType="feedbackSpoken"
 android:accessibilityFlags="flagDefault"
 android:canRetrieveWindowContent="true"
 android:description="@string/accessibility_description"
 android:notificationTimeout="100"
 android:packageNames="com.cootf.sims"
 android:settingsActivity="com.example.android.accessibility.ServiceSettingsActivity" /&gt;
</code></pre>

Run the code --> Enable the accessibility through Settings --> Accessibility --> [Your app name] --> Enable. Job Done!

blocks|key|875309|text|Android+O(API+level+26)向TelephonyManager添加了一个sendUssdRequest方法，该方法还包括一个用于获取请求结果的回调。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|875310|docs。|875311|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/reference/android/telephony/TelephonyManager#sendUssdRequest(java.lang.String,%2520android.telephony.TelephonyManager.UssdResponseCallback,%2520android.os.Handler))^0|O|G|19|F|0|0|4|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|U|8|@]|D|@$9|V|A|W|1|X]]|E|$]]|$1|H|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]]]

Android O(API level 26) adds a <code>sendUssdRequest</code> method to the <code>TelephonyManager</code>, which also includes a callback for getting the result for the request.

The <a href="https://developer.android.com/reference/android/telephony/TelephonyManager#sendUssdRequest(java.lang.String,%20android.telephony.TelephonyManager.UssdResponseCallback,%20android.os.Handler)" rel="noreferrer">docs</a>.

blocks|key|1089987|text|Android+8+(Oreo)和更高版本现在支持这一点。下面是代码。TelephonyManager类用于实现这一点。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1089988|+public+void+dialUssdToGetPhoneNumber(String+ussdCode,+int+sim)+{

++++if+(ussdCode.equalsIgnoreCase(""))+return;



++++if+(ActivityCompat.checkSelfPermission(getActivity(),+Manifest.permission.CALL_PHONE)+!=+PackageManager.PERMISSION_GRANTED)+{
++++++++requestPermissions(new+String[]{Manifest.permission.CALL_PHONE},+234);
++++++++return;
++++}
++++if+(Build.VERSION.SDK_INT+>=+Build.VERSION_CODES.O)+{


++++++++TelephonyManager+manager+=+(TelephonyManager)+getActivity().getSystemService(TELEPHONY_SERVICE);
++++++++TelephonyManager+manager2+=+manager.createForSubscriptionId(2);

++++++++TelephonyManager+managerMain+=+(sim+==+0)+?+manager+:+manager2;

++++++++managerMain.sendUssdRequest(ussdCode,+new+TelephonyManager.UssdResponseCallback()+{
++++++++++++@Override
++++++++++++public+void+onReceiveUssdResponse(TelephonyManager+telephonyManager,+String+request,+CharSequence+response)+{
++++++++++++++++super.onReceiveUssdResponse(telephonyManager,+request,+response);

++++++++++++++++Log.e("TAG",+"onReceiveUssdResponse:++Ussd+Response+=+"+%2B+response.toString().trim()+);
++++++++
+++++++++++++++

++++++++++++}

++++++++++++@Override
++++++++++++public+void+onReceiveUssdResponseFailed(TelephonyManager+telephonyManager,+String+request,+int+failureCode)+{
++++++++++++++++super.onReceiveUssdResponseFailed(telephonyManager,+request,+failureCode);

++++++++++++++++Log.e("TAG",+"onReceiveUssdResponseFailed:+"+%2B+""+%2B+failureCode+%2B+request);
++++++++++++}
++++++++},+new+Handler());
++++}

}|code-block|syntax|javascript|1089989|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|$]]

Android 8 (Oreo) and above now supports this.
Here is the code.
The TelephonyManager class is used to achieve this.
<pre><code> public void dialUssdToGetPhoneNumber(String ussdCode, int sim) {

 if (ussdCode.equalsIgnoreCase(&quot;&quot;)) return;



 if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
 requestPermissions(new String[]{Manifest.permission.CALL_PHONE}, 234);
 return;
 }
 if (Build.VERSION.SDK_INT &gt;= Build.VERSION_CODES.O) {


 TelephonyManager manager = (TelephonyManager) getActivity().getSystemService(TELEPHONY_SERVICE);
 TelephonyManager manager2 = manager.createForSubscriptionId(2);

 TelephonyManager managerMain = (sim == 0) ? manager : manager2;

 managerMain.sendUssdRequest(ussdCode, new TelephonyManager.UssdResponseCallback() {
 @Override
 public void onReceiveUssdResponse(TelephonyManager telephonyManager, String request, CharSequence response) {
 super.onReceiveUssdResponse(telephonyManager, request, response);

 Log.e(&quot;TAG&quot;, &quot;onReceiveUssdResponse: Ussd Response = &quot; + response.toString().trim() );
 
 

 }

 @Override
 public void onReceiveUssdResponseFailed(TelephonyManager telephonyManager, String request, int failureCode) {
 super.onReceiveUssdResponseFailed(telephonyManager, request, failureCode);

 Log.e(&quot;TAG&quot;, &quot;onReceiveUssdResponseFailed: &quot; + &quot;&quot; + failureCode + request);
 }
 }, new Handler());
 }

}
</code></pre>

blocks|key|875356|text|对于任何还在寻找解决方案的人来说，有一个叫做AutoUssd+(https://autoussd.com)的平台可以让你做到这一点。它还支持多步骤USSD会话...|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|875357|entityMap|0|LINK|mutability|MUTABLE|url|https://autoussd.com/^0|W|K|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

For anyone still looking for a solution to this, there's a platform called AutoUssd (<a href="https://autoussd.com" rel="nofollow noreferrer">https://autoussd.com</a>) which allows you to do exactly this. It also supports multi-step USSD sessions...

I'm wanting to write a widget displays the users' prepay balance, remaining data etc. 

I'm thinking of automatically calling the USSD code which returns this data (will have to have a regex for each network), at intervals (not often, to save battery). This would have to be done in the background. I have an app at the moment which runs the ussd code and returns the result, so I think this should be possible - but I'm not sure how it would be done in the background.

I've seen the intents for Calling a number, but I'm not sure how to get the result, and I'm also thinking that that intent would cause the call screen to come up into the foreground?

The other option is to get the data by screen-scraping the result from the carrier's website/maybe wap site but that would result in data charges for the user, so I would prefer a solution using the USSD code.

Thanks in advance for any help - only started working on understanding android today so got quite a lot to learn :)

Call (and get the response for) a USSD Code, in the background?

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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我想写一个小工具显示用户的预付余额，剩余数据等。我正在考虑自动调用USSD代码，它返回这些数据(每个网络必须有一个正则表达式)，间隔(不经常，以节省电池)。这将不得不在后台完成。目前我有一个应用程序，它运行ussd代码并返回结果，所以我认为这应该是可能的-但我不确定它将如何在后台完成。我已经看到了呼叫号码的意图，但我不...

问在后台调用USSD代码(并获取其响应)？
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