Android簡單的來電講話者例子

Android通過android speech api 和 telephony manager 提供了知道來電號碼并用語音講出的功能。愛掏網 - it200.com

在這里，我們將開發一個基本的Android應用，當手機處于響鈴模式時，它會說出來電號碼。愛掏網 - it200.com

在下一頁中，我們將看到這個應用的完整版本，它講述來電者的姓名，并提供更改速度和音調的設置選項。愛掏網 - it200.com此外，它還提供在來電號碼或來電者姓名之前和之后添加文本的選項。愛掏網 - it200.com

activity_main.xml

這里我們沒有做任何特殊的事情。愛掏網 - it200.com它只有一個簡單的文本視圖。愛掏網 - it200.com

<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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

</RelativeLayout>

Activity類

在這個活動中，我們已經編寫了代碼來了解電話狀態，并通過TextToSpeech類來講述來電號碼。愛掏網 - it200.com

package com.example.callertalker;
import java.util.Locale;
import android.media.AudioManager;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.widget.Toast;
import android.speech.tts.TextToSpeech;

public class MainActivity extends Activity implements TextToSpeech.OnInitListener {
    private TextToSpeech tts;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tts = new TextToSpeech(this, this);

        TelephonyManager telephonyManager = (TelephonyManager)getSystemService(
                                                                         Context.TELEPHONY_SERVICE);

        PhoneStateListener callStateListener = new PhoneStateListener() {
        public void onCallStateChanged(int state, String incomingNumber){
              if(state==TelephonyManager.CALL_STATE_RINGING){
                  tts.speak(incomingNumber+" calling", TextToSpeech.QUEUE_FLUSH, null);
                  Toast.makeText(getApplicationContext(),"Phone is Ringing : "+incomingNumber, 
                                                                               Toast.LENGTH_LONG).show();
                 }
              if(state==TelephonyManager.CALL_STATE_OFFHOOK){
                    Toast.makeText(getApplicationContext(),"Phone in a call or call picked", 
                                                                                  Toast.LENGTH_LONG).show();
              }
              if(state==TelephonyManager.CALL_STATE_IDLE){
                    //phone is neither ringing nor in a call
              }
        }
        };
        telephonyManager.listen(callStateListener,PhoneStateListener.LISTEN_CALL_STATE);
    }

    @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 {        
            }

        } 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();
    }
}

AndroidManifest.xml

你需要在這個 XML 文件中添加 READ_PHONE_STATE 得使用權限。愛掏網 - it200.com讓我們看看完整的代碼。愛掏網 - it200.com

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:androclass="http://schemas.android.com/apk/res/android"
    package="com.example.callertalker"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

   <uses-permission android:name="android.permission.READ_PHONE_STATE" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.callertalker.MainActivity"
            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>

輸出:

在實際設備上運行，如手機，并從另一個手機撥打電話，則您將聽到來電號碼。愛掏網 - it200.com