hi, i have an app that responds to user the incoming sms via speech .
The app seems to work perfectly when it is lauched or even when i
press the back button on the emulator, however when i start a new
app , then i receive the new message only as a Toast (as shown in the
prgm below) but i cannnot hear any sound. I checked the logcat and
found that in this situation i get the error that : "null synthesis-
can't speak" . Please can someone help me on this:
Here is the code having two classes:
TextSpeaker class:
package com.example.TextSpeaker;
import java.util.Locale;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
// the following programme converts the text to speech
public class TextSpeaker extends Activity implements OnInitListener {
/** Called when the activity is first created. */
int MY_DATA_CHECK_CODE = 0;
public static TextToSpeech mtts;
public Button button,stop_button;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
button = (Button)findViewById(R.id.button);
stop_button=(Button)findViewById(R.id.stop_button);
Intent myintent = new Intent();
myintent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
startActivityForResult(myintent, MY_DATA_CHECK_CODE);
//edit text=(EditText)findViewById(R.id.edittext);
}
public void buttonClickListener(View src){
switch(src.getId())
{
case(R.id.button):
Toast.makeText(getApplicationContext(), "The service has
been started\n Every new message will now be read out",
Toast.LENGTH_LONG).show();
break;
case(R.id.stop_button):
Toast.makeText(getApplicationContext(), "The service has
been stopped\n ", Toast.LENGTH_LONG).show();
mtts.stop();
break;
}
}
protected void onActivityResult(int requestcode,int
resultcode,Intent data)
{
if(requestcode == MY_DATA_CHECK_CODE)
{
if(resultcode==TextToSpeech.Engine.CHECK_VOICE_DATA_PASS)
{
// success so create the TTS engine
Log.v("TextSpeaker","Pico is installed in the
system");
mtts = new TextToSpeech(this,this);
mtts.setLanguage(Locale.ENGLISH);
}
else
{
//install the Engine
Intent install = new Intent();
install.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
startActivity(install);
}
}
}
@Override
public void onInit(int status) {
if(status==TextToSpeech.SUCCESS)
button.setEnabled(true);
}
}
and here's the second class:
Receiver
package com.example.TextSpeaker;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.telephony.SmsMessage; // supports both gsm and cdma
import android.util.Log;
import android.widget.Toast;
public class Receiver extends BroadcastReceiver{
public static String str;
@Override
public void onReceive(Context context, Intent intent) {
Bundle bundle = intent.getExtras();
Log.d("Receiver","Message received successfully");
SmsMessage[] msgs = null;
if(bundle!=null)
{
// retrive the sms received
Object[] pdus = (Object[])bundle.get("pdus");
msgs = new SmsMessage[pdus.length];
for(int i=0;i<msgs.length;i++)
{
str="";
msgs[i]=SmsMessage.createFromPdu((byte[])
pdus[i]);
str+="Message From
"+msgs[i].getOriginatingAddress()+".";
str+="The message is
"+msgs[i].getMessageBody().toString();
}
Toast.makeText(context,str,Toast.LENGTH_LONG).show();
TextSpeaker.mtts.speak(Receiver.str,
TextToSpeech.QUEUE_FLUSH,null);
}
}
}
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