android texttospeech例子 androidtexttospeech|Android

【android texttospeech例子】TextToSpeech类负责将文本转换为语音。它提供了许多控制语音的方法，例如setSpeedRate（），setPitch（）等。
在此示例中，我们将看到带有速度和音高选项的android texttospeech示例。
activity_main.xml拖动2个文本视图，1个编辑文本，1个微调器和1个布局按钮。现在，activity_main.xml文件将如下所示：

< RelativeLayout xmlns:androclass="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity" >< EditText android:id="@+id/editText1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignBaseline="@+id/textView1" android:layout_alignBottom="@+id/textView1" android:layout_alignParentRight="true" android:layout_marginRight="58dp" android:ems="10" >< requestFocus /> < /EditText>< Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/editText1" android:layout_centerHorizontal="true" android:layout_marginTop="28dp" android:text="Speak" />< TextView android:id="@+id/textView2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/button1" android:layout_marginTop="62dp" android:layout_toLeftOf="@+id/editText1" android:text="Speed:" />< TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/textView2" android:layout_alignParentTop="true" android:layout_marginTop="42dp" android:text="Text:" />< Spinner android:id="@+id/spinner1" android:layout_width="200dp" android:layout_height="wrap_content" android:layout_below="@+id/button1" android:layout_centerHorizontal="true" android:layout_marginTop="43dp" />< /RelativeLayout>

活动类让我们看看说出给定文本的代码。

package com.example.texttospeechspeed; import android.os.Bundle; import android.app.Activity; import android.view.Menu; import java.util.ArrayList; import java.util.List; import java.util.Locale; import android.speech.tts.TextToSpeech; import android.util.Log; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.Spinner; import android.widget.Toast; public class MainActivity extends Activity implements TextToSpeech.OnInitListener, OnItemSelectedListener { /** Called when the activity is first created. */private TextToSpeech tts; private Button buttonSpeak; private EditText editText; private Spinner speedSpinner, pitchSpinner; private static String speed="Normal"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tts = new TextToSpeech(this, this); buttonSpeak = (Button) findViewById(R.id.button1); editText = (EditText) findViewById(R.id.editText1); speedSpinner = (Spinner) findViewById(R.id.spinner1); //load data in spinner loadSpinnerData(); speedSpinner.setOnItemSelectedListener(this); //button click event buttonSpeak.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View arg0) { setSpeed(); speakOut(); }}); }@Override public void onInit(int status) {if (status == TextToSpeech.SUCCESS) {int result = tts.setLanguage(Locale.US); if (result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED) { Log.e("TTS", "This Language is not supported"); } else { buttonSpeak.setEnabled(true); speakOut(); }} else { Log.e("TTS", "Initilization Failed!"); }}@Override public void onDestroy() { // Don't forget to shutdown tts! if (tts != null) { tts.stop(); tts.shutdown(); } super.onDestroy(); }private void setSpeed(){ if(speed.equals("Very Slow")){ tts.setSpeechRate(0.1f); } if(speed.equals("Slow")){ tts.setSpeechRate(0.5f); } if(speed.equals("Normal")){ tts.setSpeechRate(1.0f); //default 1.0 } if(speed.equals("Fast")){ tts.setSpeechRate(1.5f); } if(speed.equals("Very Fast")){ tts.setSpeechRate(2.0f); } //for setting pitch you may call //tts.setPitch(1.0f); //default 1.0 }private void speakOut() { String text = editText.getText().toString(); tts.speak(text, TextToSpeech.QUEUE_FLUSH, null); }private void loadSpinnerData() { //Data for speed Spinner List< String> lables = new ArrayList< String>(); lables.add("Very Slow"); lables.add("Slow"); lables.add("Normal"); lables.add("Fast"); lables.add("Very Fast"); // Creating adapter for spinner ArrayAdapter< String> dataAdapter = new ArrayAdapter< String>(this, android.R.layout.simple_spinner_item, lables); // Drop down layout style - list view with radio button dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); // attaching data adapter to spinner speedSpinner.setAdapter(dataAdapter); }@Override public void onItemSelected(AdapterView< ?> parent, View view, int position, long id) { // On selecting a spinner item speed = parent.getItemAtPosition(position).toString(); Toast.makeText(parent.getContext(), "You selected: " + speed, Toast.LENGTH_LONG).show(); }@Override public void onNothingSelected(AdapterView< ?> arg0) {}@Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_main, menu); return true; }}