how to get ride of deprecated API error in Android Studio - api

Question

I am working on android studio project for the first time and I am using Broadcast Receiver. Whenever I run my application I get an error that my Broadcast File uses or overrides a deprecated Api. Although my project runs fine but I need to know why I am getting this and how to get rid of this error.My broadcast file is as follows:
package com.example.user.offlinemobilefinder;
import android.content.Context;
import android.content.Intent;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.view.View;
import android.widget.Button;
public class AlarmActivity extends AppCompatActivity {
MediaPlayer myMediaPlayer = null;
Button btnStop;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_alarm);
Intent intent= getIntent();
final String contact=intent.getStringExtra("contact");
btnStop=findViewById(R.id.stopButton);
myMediaPlayer = MediaPlayer.create(this, R.raw.loudalarm);
final AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
int maxVolume = audioManager.getStreamMaxVolume(AudioManager.STREAM_ALARM);
audioManager.setStreamVolume(AudioManager.STREAM_ALARM, maxVolume,AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE);
myMediaPlayer.start();
btnStop.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
myMediaPlayer.stop();
SmsManager smsManager = SmsManager. getDefault();
smsManager.sendTextMessage(contact, null, "Alarm Stoped", null, null);
}
});
}
}
Thanks in advance for help.

Answer 1

AndroidStudio should tell you which method is deprecated. You can then go to the documentation for that method on developer.android.com and there should be a note telling you what to use instead.