내가 가지고있는 API 데모에 사용되는이 클래스 : 나는 다음 온 클릭 버튼으로 다른 클래스를 가지고 사용하여 sayHello();
메소드를 호출TextToSpeech의 API - ** - 제발 도와주세요 - ** - 호출 방법
public class TextToSpeechActivity extends Activity implements TextToSpeech.OnInitListener {
static int currentHelloIndex = 0;
private static final String TAG = "TextToSpeechDemo";
public static TextToSpeech mTts;
private Button mAgainButton;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.text_to_speech);
// Initialize text-to-speech. This is an asynchronous operation.
// The OnInitListener (second argument) is called after initialization completes.
mTts = new TextToSpeech(this,
this // TextToSpeech.OnInitListener
);
// The button is disabled in the layout.
// It will be enabled upon initialization of the TTS engine.
mAgainButton = (Button) findViewById(R.id.again_button);
mAgainButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
sayHello();
}
});
}
@Override
public void onDestroy() {
// Don't forget to shutdown!
if (mTts != null) {
mTts.stop();
mTts.shutdown();
}
super.onDestroy();
}
// Implements TextToSpeech.OnInitListener.
@Override
public void onInit(int status) {
// status can be either TextToSpeech.SUCCESS or TextToSpeech.ERROR.
if (status == TextToSpeech.SUCCESS) {
// Set preferred language to US english.
// Note that a language may not be available, and the result will indicate this.
int result = mTts.setLanguage(Locale.US);
// Try this someday for some interesting results.
// int result mTts.setLanguage(Locale.FRANCE);
if (result == TextToSpeech.LANG_MISSING_DATA ||
result == TextToSpeech.LANG_NOT_SUPPORTED) {
// Lanuage data is missing or the language is not supported.
Log.e(TAG, "Language is not available.");
} else {
// Check the documentation for other possible result codes.
// For example, the language may be available for the locale,
// but not for the specified country and variant.
// The TTS engine has been successfully initialized.
// Allow the user to press the button for the app to speak again.
mAgainButton.setEnabled(true);
// Greet the user.
sayHello();
}
} else {
// Initialization failed.
Log.e(TAG, "Could not initialize TextToSpeech.");
}
}
private static final String[] HELLOS = {
"What is a string of words that satisfy the grammatical rules of a sentence",
"Salutations",
"Greetings",
"Howdy",
"What's crack-a-lackin?",
"That explains the stench!"
};
public static void sayHello() {
// Select a random hello.
int helloLength = HELLOS.length;
String hello = HELLOS[currentHelloIndex];
currentHelloIndex = (currentHelloIndex + 1) % helloLength;
mTts.speak(hello,
TextToSpeech.QUEUE_FLUSH, // Drop all pending entries in the playback queue.
null);
}
}
TextToSpeech.sayHello();
이렇게하면 프로세스 폐쇄 오류가 발생하고 logcat 소스에서 널 예외 오류가 발생합니다. 누군가이 문제를 해결할 수 있습니까? 감사합니다
감사합니다. 그래서 다른 클래스의 SayHello 메서드를 호출 할 방법이 없습니까? – Tommy
dave에게 도움을 주셔서 감사합니다. mTts = main.mTts와 같은 주요 활동에서 변수를 가져 와서 main에서 currentHelloIndex를 호출하고이를 새로운 int에 저장하는 변수를 작성하여이 작업을 수행했습니다. 당신의 도움을 주셔서 감사합니다. – Tommy