BroadcastReceiver实现android来去电录音功能（外录）

最新推荐文章于 2024-05-04 10:02:18 发布

原创最新推荐文章于 2024-05-04 10:02:18 发布 · 558 阅读

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#录音 #broadcastreceiver

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在原生Android系统中，由于缺少内录功能，实现来去电录音需借助BroadcastReceiver监听电话状态，通过麦克风进行外录。本文探讨如何利用BroadcastReceiver实现这一功能。

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因为原生android没有提供来去电内录功能，所以只能通过麦克进行通话录音，

<span style="font-size:18px;">/**
 * 来去电录音，因为去电没有接听的状态，只要拨出就会开始录音
 *    
 * @author jaeuken  
 * @date 2015-1-4
 */
public class PhoneBroadcastReceiver extends BroadcastReceiver {

	private static String outgoingNumber = "";
	private static String incomeNumber = "";
	private String state = "";
	private static MediaRecorder mediaRecorder;  
	@Override
	public void onReceive(Context context, Intent intent) {
		/*去电时： 
		 * 未接：phone_state=OFFHOOK; 
		 * 挂断：phone_state=IDLE 
		 * 来电时:      *  
		 * 未接：phone_state=RINGING 
		 * 已接：phone_state=OFFHOOK; 
		 * 挂断：phone_state=IDLE**/ 
		//如果是拨打电话  
		if(intent.getAction().equals(Intent.ACTION_NEW_OUTGOING_CALL)){ 
			outgoingNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER); 
		}
		if(intent.getAction().equals("android.intent.action.PHONE_STATE")){
			state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
			if("RINGING".equals(state)){
				incomeNumber = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
			}
			if("OFFHOOK".equals(state)){//来电接通或去电（无法判断是否接通），开始录音
				Thread recordingThread = new Thread() {
					@Override
					public void run() {
						try {
							File dirFile = Environment.getExternalStorageDirectory();
							File file;
							//根据用来电号码是否为空判断来去电
							if(incomeNumber!=null&&incomeNumber.length()>0){
								file = new File(dirFile, "IN_"+incomeNumber +"_" + System.currentTimeMillis() + ".3gp");  
							}else{
								file = new File(dirFile, "OUT_"+outgoingNumber +"_" + System.currentTimeMillis() + ".3gp");  
							}
							
							mediaRecorder = new MediaRecorder();  
							mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);   //获得声音数据源  
							mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);   // 按3gp格式输出  
							mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);     
							mediaRecorder.setOutputFile(file.getAbsolutePath());   //输出文件  
							mediaRecorder.prepare();
							mediaRecorder.start();
						} catch (IllegalStateException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						} catch (IOException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}    //准备  

					}
				};
				recordingThread.start();
			}
			if("IDLE".equals(state)){//挂断，停止录音
				if(mediaRecorder != null){  
					mediaRecorder.stop();  
					mediaRecorder.reset();
					mediaRecorder.release();  
					mediaRecorder = null;  
					outgoingNumber = "";
					incomeNumber = "";
				}   
			}
		}
	}  

}</span>

需要的权限配置

<span style="font-size:14px;"> </span><span style="font-size:18px;"><!-- 在SDCard中创建与删除文件权限 -->  
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>  
    <!-- 在SDCard写入数据权限 -->  
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>  
    <!-- 刻入声音权限 -->  
    <uses-permission android:name="android.permission.RECORD_AUDIO"/>
    <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"></uses-permission> 
</span>

<span style="font-size:18px;"><receiver android:name="com.test.recordphone.PhoneBroadcastReceiver">  
            <intent-filter >  
               <action android:name="android.intent.action.PHONE_STATE"/>
               <action android:name="android.intent.action.NEW_OUTGOING_CALL" />
            </intent-filter>  
        </receiver>
</span>