在 Android 中无需打开手机应用即可拨打 USSD 号码

Question

I am trying to call a USSD number from my application like this:

Uri u = Uri.fromParts("tel", "*110#", "");
Intent i = new Intent(Intent.ACTION_CALL, u);
startActivity(i);

This makes the phone app launch and call the number.

What I want is to call the USSD number without opening the phone app or atlease open it up in the background.

If the user is doing something, then he should not be disturbed. Only a notification must be generated.

any suggestions?

Answer 1

I am trying to call a USSD number from my application like this:

Uri u = Uri.fromParts("tel", "*110#", "");
Intent i = new Intent(Intent.ACTION_CALL, u);
startActivity(i);

This makes the phone app launch and call the number.

What I want is to call the USSD number without opening the phone app or atlease open it up in the background.

If the user is doing something, then he should not be disturbed. Only a notification must be generated.

any suggestions?

Answer 2

现在可以使用sendUssdRequest()检查文档https://developer.android.com/reference/android/telephony/TelephonyManager.html#sendUssdRequest(java.lang.String,%20android.telephony .TelephonyManager.UssdResponseCallback,%20android.os.Handler)