Android development example source code

// import
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
// you have to add implementation
public class Main extends Activity implements TextToSpeech.OnInitListener {
        private int _langTTSavailable = -1; // set up in onInit method
        // declaration
	private TextToSpeech mTts;


	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
// assigned handle - initialisation
			mTts = new TextToSpeech(this,
			        (OnInitListener) this  // TextToSpeech.OnInitListener
			        );
}

   // Implements TextToSpeech.OnInitListener.
    public void onInit(int status) {
        if (status == TextToSpeech.SUCCESS) {
            // Set preferred language to US english.
             _langTTSavailable = mTts.setLanguage(Locale.US); // Locale.FRANCE etc.
            if (_langTTSavailable == TextToSpeech.LANG_MISSING_DATA ||
            	_langTTSavailable == TextToSpeech.LANG_NOT_SUPPORTED) {
             } else if ( _langTTSavailable >= 0) {
			 mTts.speak("Good morning",
            TextToSpeech.QUEUE_FLUSH,  // Drop all pending entries in the playback queue.
            null);
            }
        } else {
            // Initialization failed.
        }
    }

    @Override
    public void onDestroy() {
        // TTS shutdown!
        if (mTts != null) {
            mTts.stop();
            mTts.shutdown();
        }

        super.onDestroy();
    }

}

Get supported language:

private TextToSpeech mTts;
// public void onInit(int status){
int result;
String s;
result = mTts.setLanguage(	Locale.	CANADA	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	CANADA	 not supported<br>"	;}else{s+="	CANADA	 supported<br>";}
result = mTts.setLanguage(	Locale.	CANADA_FRENCH	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	CANADA_FRENCH	 not supported<br>"	;}else{s+="	CANADA_FRENCH	 supported<br>";}
result = mTts.setLanguage(	Locale.	CHINA	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	CHINA	 not supported<br>"	;}else{s+="	CHINA	 supported<br>";}
result = mTts.setLanguage(	Locale.	CHINESE	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	CHINESE	 not supported<br>"	;}else{s+="	CHINESE	 supported<br>";}
result = mTts.setLanguage(	Locale.	ENGLISH	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	ENGLISH	 not supported<br>"	;}else{s+="	ENGLISH	 supported<br>";}
result = mTts.setLanguage(	Locale.	FRANCE	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	FRANCE	 not supported<br>"	;}else{s+="	FRANCE	 supported<br>";}
result = mTts.setLanguage(	Locale.	FRENCH	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	FRENCH	 not supported<br>"	;}else{s+="	FRENCH	 supported<br>";}
result = mTts.setLanguage(	Locale.	GERMAN	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	GERMAN	 not supported<br>"	;}else{s+="	GERMAN	 supported<br>";}
result = mTts.setLanguage(	Locale.	GERMANY	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	GERMANY	 not supported<br>"	;}else{s+="	GERMANY	 supported<br>";}
result = mTts.setLanguage(	Locale.	ITALIAN	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	ITALIAN	 not supported<br>"	;}else{s+="	ITALIAN	 supported<br>";}
result = mTts.setLanguage(	Locale.	ITALY	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	ITALY	 not supported<br>"	;}else{s+="	ITALY	 supported<br>";}
result = mTts.setLanguage(	Locale.	JAPAN	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	JAPAN	 not supported<br>"	;}else{s+="	JAPAN	 supported<br>";}
result = mTts.setLanguage(	Locale.	JAPANESE	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	JAPANESE	 not supported<br>"	;}else{s+="	JAPANESE	 supported<br>";}
result = mTts.setLanguage(	Locale.	KOREA	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	KOREA	 not supported<br>"	;}else{s+="	KOREA	 supported<br>";}
result = mTts.setLanguage(	Locale.	KOREAN	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	KOREAN	 not supported<br>"	;}else{s+="	KOREAN	 supported<br>";}
result = mTts.setLanguage(	Locale.	PRC	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	PRC	 not supported<br>"	;}else{s+="	PRC	 supported<br>";}
result = mTts.setLanguage(	Locale.	ROOT	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	ROOT	 not supported<br>"	;}else{s+="	ROOT	 supported<br>";}
result = mTts.setLanguage(	Locale.	SIMPLIFIED_CHINESE	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	SIMPLIFIED_CHINESE	 not supported<br>"	;}else{s+="	SIMPLIFIED_CHINESE	 supported<br>";}
result = mTts.setLanguage(	Locale.	TAIWAN	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	TAIWAN	 not supported<br>"	;}else{s+="	TAIWAN	 supported<br>";}
result = mTts.setLanguage(	Locale.	TRADITIONAL_CHINESE	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	TRADITIONAL_CHINESE	 not supported<br>"	;}else{s+="	TRADITIONAL_CHINESE	 supported<br>";}
result = mTts.setLanguage(	Locale.	UK	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	UK	 not supported<br>"	;}else{s+="	UK	 supported<br>";}
result = mTts.setLanguage(	Locale.	US	);	if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s +=	 "	US	 not supported<br>"	;}else{s+="	US	 supported<br>";}

android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.my_package/com.example.my_package.MainClass}; have you declared this activity in your AndroidManifest.xml?

Is MainClass.java in AndroidManifest as a activity ?
AndroidManifest.xml example

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="//schemas.android.com/apk/res/android"
      package="com.example.my_packag"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="7" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".MainClass"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>
</manifest>

If you have to type frequently the same code you can create templates which can be activate via autocomplete with Ctrl + Space.

For example lets assume setOnClickListener body.

To create a template for this select the menu Window->Preferences and Open Java -> Editor -> Templates

Type name of template in Eclipse s editor and pres Ctrl+Space

[caption id="attachment_1114" align="alignleft" width="300" caption="Eclipse-show-template-proposals"][/caption]

Select your template from intellisense help and press Enter or double click on selected item.

[caption id="attachment_1116" align="alignleft" width="300" caption="Eclipse - select your template"][/caption]

	mIdButtonHome.setOnClickListener(new View.OnClickListener() {
		public void onClick(View v) {
			Intent browserIntent = new Intent(Intent.ACTION_VIEW,
					Uri.parse("//android.okhelp.cz/category/software/"));
			startActivity(browserIntent);
		}
	});

Quick help in Eclipse editor: select keyword and press Ctrl+1

Try reboot device.
Start device with start button on side of phone.
Screen will go to light black color.
Long press Start button for menu:
Power off
Reboot
Airplane mode

Reboot item is in same level like Start button.
Click on the screen - (Hear a click)
Now find OK button , it is under Reboot item on right side of screen.
Press OK (Hear a click)
Wait a moment.
If device to do nothing , try short press Start button (sreen will black)
and again to press Start button. If screen go to light black color,
try again find Reboot item as written above.

UNEXPECTED TOP-LEVEL EXCEPTION:
java.lang.IllegalArgumentException: already added: Lcz/okhelp/MyMathClass;

First try this solution!!!!!
Select your project in project tree and go to the Eclipse menu Project » Clean » Clean projects selected below » select your project and click OK.

If you create *.apk package with proguard sometimes you must back up the project, delete project, and create new project if you are unable to create *.apk file.

Check your AndroidManifest.xml if all Activity is correctly inserted. If you add a library project to Main project you have to insert Activity from library to Main project AndroidManifest.xml


Problem with the library.
I deleted library project from project tree and again put the _library project into the main project. This problem was resolved.
1.)Go to Project » Properties » Java Build Path » Libraries and remove (your projects) click OK.
2.)Go to Project » Clean » Clean projects selected below » select your project and click OK.
3.)Add again your LIBRARY project to your MAIN project Project » Properties » Java Build Path » Libraries.
See image below.

Problem with a *.apk file
If you create signed *.apk, you have to delete previous *.apk from your PC folder.