电话状态、电话录音、取消电话监听

获得电话状态需要在请电脑文件中添加如下权限

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

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监听电话的步骤：

    说用到主要方法：

void	listen(PhoneStateListener listener, int events) Registers a listener object to receive notification of changes in specified telephony states.

//1、通过服务获得TelePhonemanger
TelePhonemanger telephoneManager = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
//2、注册一个电话的监听listener 监听电话状态
telephonyManager.listen(new MyPhoneStateListener(), PhoneStateListener.LISTEN_CALL_STATE);

写一个内部类MyPhoneStateListener 继承与 PhoneStateListener

	 private class MyListener extends PhoneStateListener{
		@Override
		public void onCallStateChanged(int state, String incomingNumber) {
			if(state==tele.CALL_STATE_RINGING){//来电状态
				System.out.println("弹出土司------------电话号码归属地");
				
			}else if(state==tele.CALL_STATE_OFFHOOK){//接通状态
				System.out.println("土司关闭");
			}
			super.onCallStateChanged(state, incomingNumber);
		}
	}

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相关实例：

1、电话录音：

public class PhoneService extends Service {
	private TelephonyManager telephonyManager;
	//定义一个  录音机
	private MediaRecorder recorder;  
	
	@Override
	public IBinder onBind(Intent intent) {
		return null;
	}
	
	@Override
	public void onCreate() {
		// 在 把 TelephonyManager 给初始化 
		telephonyManager  = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
		/**
		 * 注册一个电话的监听 
		 * listener  监听电话状态 
		 */
		telephonyManager.listen(new MyPhoneStateListener(), PhoneStateListener.LISTEN_CALL_STATE);
		
		super.onCreate();
	}
	
	
	private class MyPhoneStateListener extends PhoneStateListener{
		
		//当电话状态发生改变的时候调用 
		@Override
		public void onCallStateChanged(int state, String incomingNumber) {
			switch (state) {
			case TelephonyManager.CALL_STATE_IDLE:  // 挂断 或者 未接通
				System.out.println("判断一下录音机是否开启  如果开启  停止录音");
				if (recorder!=null) {
					 recorder.stop(); //停止录
					 recorder.reset();   // You can reuse the object by going back to setAudioSource() step
					 recorder.release(); // Now the object cannot be reused
				}
				
				
				break;
				
			case TelephonyManager.CALL_STATE_OFFHOOK:  //接通状态 
				System.out.println("开始录音");
				 
				//开始录
				recorder.start();   // Recording is now started
				
				break;
				
				
			case TelephonyManager.CALL_STATE_RINGING:  //响铃状态
				
				System.out.println("准备一个录音机出来");
				  //初始化 录音机
				 recorder = new  MediaRecorder();
				 // 设置音频来源 
				 recorder.setAudioSource(MediaRecorder.AudioSource.MIC);   // zet  华为   
				 // 设置音频输出的格式  3gp 
				 recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
				 // 设置音频编码方式    
				 recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
				 //设置音频保存的路径  
				 recorder.setOutputFile("/mnt/sdcard/haha.3gp");
				 //开始准备录 
				 try {
					recorder.prepare();
				} catch (IllegalStateException e) {
					e.printStackTrace();
				} catch (IOException e) {
					e.printStackTrace();
				}
				
				
				break;
			default:
				break;
			}
			
			
			super.onCallStateChanged(state, incomingNumber);
		}
		
	}
	
}

注：在清单中需要添加的权限：

  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

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常用到的电话状态：

1、通过系统服务拿到TelephoneManager

TelephonyManager tele = (TelephonyManager) getSystemService(TELEPHONY_SERVICE

2、获得电话的几种常用状态

CALL_STATE_IDLE：表示电话处于闲置状态             (对应数字：0)

CALL_STATE_OFFHOOK：表示电话处于接通状态         (对应数字：2)

CALL_STATE_RINGING：表示电话处于响铃状态                 (对应数字：1)

3、获得当前电话状态：

int state = tele.getCallState();

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如何取消电话监听服务：

telePhoneManager.listen(listener,PhoneStateListener.LISTEN_NINE);
listener=null;

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常用api预览：

String	ACTION_PHONE_STATE_CHANGED	Broadcast intent action indicating that the call state (cellular) on the device has changed.
int	CALL_STATE_IDLE	Device call state: No activity.
int	CALL_STATE_OFFHOOK	Device call state: Off-hook.
int	CALL_STATE_RINGING	Device call state: Ringing.
int	DATA_ACTIVITY_DORMANT	Data connection is active, but physical link is down
int	DATA_ACTIVITY_IN	Data connection activity: Currently receiving IP PPP traffic.
int	DATA_ACTIVITY_INOUT	Data connection activity: Currently both sending and receiving IP PPP traffic.
int	DATA_ACTIVITY_NONE	Data connection activity: No traffic.
int	DATA_ACTIVITY_OUT	Data connection activity: Currently sending IP PPP traffic.
int	DATA_CONNECTED	Data connection state: Connected.
int	DATA_CONNECTING	Data connection state: Currently setting up a data connection.
int	DATA_DISCONNECTED	Data connection state: Disconnected.
int	DATA_SUSPENDED	Data connection state: Suspended.

来自为知笔记(Wiz)