Provide an API to make USSD calls and read the responses. am: c51fcb97

            </intent-filter>

        </activity>

        <activity android:name="com.android.server.telecom.testapps.TestUssdActivity"

                android:label="@string/UssdUiAppLabel"

                android:launchMode="singleInstance">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.DEFAULT" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

        <activity android:name="com.android.server.telecom.testapps.SelfManagedCallingActivity"

                  android:label="@string/selfManagedCallingActivityLabel"

                  android:process="com.android.server.telecom.testapps.SelfMangingCallingApp"

<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (C) 2014 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");

     you may not use this file except in compliance with the License.

     You may obtain a copy of the License at

          http://www.apache.org/licenses/LICENSE-2.0

     Unless required by applicable law or agreed to in writing, software

     distributed under the License is distributed on an "AS IS" BASIS,

     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

     See the License for the specific language governing permissions and

     limitations under the License.

-->

<LinearLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    <EditText

        android:id="@+id/number"

        android:inputType="number"

        android:layout_width="200dp"

        android:layout_height="wrap_content" />

    <Button

        android:id="@+id/place_ussd_button"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/placeUssdButton" />

</LinearLayout>

        <item>The FCC has mandated that I respond... I will do so begrudgingly</item>

        <item>😂😂😂💯</item>

    </string-array>

    <string name="UssdUiAppLabel">Test Ussd UI</string>

    <string name="placeUssdButton">Send USSD</string>

</resources>

package com.android.server.telecom.testapps;

import android.app.Activity;

import android.content.Context;

import android.os.Bundle;

import android.os.Handler;

import android.os.Looper;

import android.util.Log;

import android.telephony.TelephonyManager;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.EditText;

import android.widget.Toast;

public class TestUssdActivity extends Activity {

    private EditText mUssdNumberView;

    private static Context context;

    public static final String LOG_TAG = "TestUssdActivity";

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        TestUssdActivity.context = getApplicationContext();

        setContentView(R.layout.testussd_main);

        findViewById(R.id.place_ussd_button).setOnClickListener(new OnClickListener() {

            @Override

            public void onClick(View v) {

                placeUssdRequest();

            }

        });

        mUssdNumberView = (EditText) findViewById(R.id.number);

    }

    public static final class OnReceiveUssdResponseCallback extends

        TelephonyManager.OnReceiveUssdResponseCallback {

            OnReceiveUssdResponseCallback() {

            }

            public void onReceiveUssdResponse(String req, CharSequence message) {

                Log.i(LOG_TAG, "USSD Success:::" + req + "," + message);

                showToast("USSD Response Successly received for code:" + req + "," + message);

            }

            public void onReceiveUssdResponseFailed(String req, int resultCode) {

                Log.i(LOG_TAG, "USSD Fail:::" + req + "," + resultCode);

                showToast("USSD Response failed for code:" + req + "," + resultCode);

            }

    }

    private void placeUssdRequest() {

        String mUssdNumber = mUssdNumberView.getText().toString();

        if (mUssdNumber.equals("") || mUssdNumber == null) {

            mUssdNumber = "932";

        }

        mUssdNumber = "#" + mUssdNumber + "#";

        final TelephonyManager telephonyManager =

                (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);

        try {

            Handler h = new Handler(Looper.getMainLooper());

            OnReceiveUssdResponseCallback receiveUssdResponseCallback =

                    new OnReceiveUssdResponseCallback();

            telephonyManager.sendUssdRequest(mUssdNumber, receiveUssdResponseCallback, h);

        } catch (SecurityException e) {

            showToast("Permission check failed");

            return;

        }

    }

    private static void showToast(String message) {

        Toast.makeText(TestUssdActivity.context, message, Toast.LENGTH_SHORT).show();

    }

}

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