Android电话相关的操作 - 打电话，接电话，挂电话

因为Android2.3以上增加了对permission  android.permission.MODIFY_PHONE_STATE 的限制，2.3之前的通过反射机制调用ITelephone的能力的做法已经不适用，所以可以用伪造广播的方式来接听电话

package com.demo.launcher;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import android.content.Context;
import android.content.Intent;
import android.media.AudioManager;
import android.net.Uri;
import android.telephony.TelephonyManager;
import android.text.TextUtils;
import android.view.KeyEvent;

public class PhoneUtils {
	
	public static String TAG = PhoneUtils.class.getSimpleName();

	public static void endCall(Context context) {
		try {
			Object telephonyObject = getTelephonyObject(context);
			if (null != telephonyObject) {
				Class telephonyClass = telephonyObject.getClass();

				Method endCallMethod = telephonyClass.getMethod("endCall");
				endCallMethod.setAccessible(true);

				endCallMethod.invoke(telephonyObject);
			}
		} catch (SecurityException e) {
			e.printStackTrace();
		} catch (NoSuchMethodException e) {
			e.printStackTrace();
		} catch (IllegalArgumentException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (InvocationTargetException e) {
			e.printStackTrace();
		}

	}
	
	private static Object getTelephonyObject(Context context) {
		Object telephonyObject = null;
		try {
			// 初始化iTelephony
			TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
			// Will be used to invoke hidden methods with reflection
			// Get the current object implementing ITelephony interface
			Class telManager = telephonyManager.getClass();
			Method getITelephony = telManager.getDeclaredMethod("getITelephony");
			getITelephony.setAccessible(true);
			telephonyObject = getITelephony.invoke(telephonyManager);
		} catch (SecurityException e) {
			e.printStackTrace();
		} catch (NoSuchMethodException e) {
			e.printStackTrace();
		} catch (IllegalArgumentException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (InvocationTargetException e) {
			e.printStackTrace();
		}
		return telephonyObject;
	}

	
	/**
	 * 通过反射调用的方法，接听电话，该方法只在android 2.3之前的系统上有效。
	 * @param context
	 */
	private static void answerRingingCallWithReflect(Context context) {
		try {
			Object telephonyObject = getTelephonyObject(context);
			if (null != telephonyObject) {
				 Class telephonyClass = telephonyObject.getClass();
				 Method endCallMethod = telephonyClass.getMethod("answerRingingCall");
				 endCallMethod.setAccessible(true);
				
				 endCallMethod.invoke(telephonyObject);
				// ITelephony iTelephony = (ITelephony) telephonyObject;
				// iTelephony.answerRingingCall();
			}
		} catch (SecurityException e) {
			e.printStackTrace();
		} catch (IllegalArgumentException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (InvocationTargetException e) {
			e.printStackTrace();
		} catch (NoSuchMethodException e) {
			e.printStackTrace();
		}

	}
	
	/**
	 * 伪造一个有线耳机插入，并按接听键的广播，让系统开始接听电话。
	 * @param context
	 */
	private static void answerRingingCallWithBroadcast(Context context){
		AudioManager localAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
		//判断是否插上了耳机
		boolean isWiredHeadsetOn = localAudioManager.isWiredHeadsetOn();
		if (!isWiredHeadsetOn) {
			Intent headsetPluggedIntent = new Intent(Intent.ACTION_HEADSET_PLUG);
			headsetPluggedIntent.putExtra("state", 1);
			headsetPluggedIntent.putExtra("microphone", 0);
			headsetPluggedIntent.putExtra("name", "");
			context.sendBroadcast(headsetPluggedIntent);
			
			Intent meidaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
			KeyEvent keyEvent = new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_HEADSETHOOK);
			meidaButtonIntent.putExtra(Intent.EXTRA_KEY_EVENT,keyEvent);
			context.sendOrderedBroadcast(meidaButtonIntent, null);
			
			Intent headsetUnpluggedIntent = new Intent(Intent.ACTION_HEADSET_PLUG);
			headsetUnpluggedIntent.putExtra("state", 0);
			headsetUnpluggedIntent.putExtra("microphone", 0);
			headsetUnpluggedIntent.putExtra("name", "");
			context.sendBroadcast(headsetUnpluggedIntent);
			
		} else {
			Intent meidaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
			KeyEvent keyEvent = new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_HEADSETHOOK);
			meidaButtonIntent.putExtra(Intent.EXTRA_KEY_EVENT,keyEvent);
			context.sendOrderedBroadcast(meidaButtonIntent, null);
		}
	}

	/**
	 * 
	 * @param context
	 */
	public static void answerRingingCall(Context context) {
		if (BaseActivity.isGingerbreadOrlater()) {
			answerRingingCallWithBroadcast(context);
		} else {
			answerRingingCallWithReflect(context);
		}
	}
	
	/**
	 * 
	 * @param context
	 * @param phoneNumber
	 */
	public static void callPhone(Context context, String phoneNumber) {
		if(!TextUtils.isEmpty(phoneNumber)){
			try {
				Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:"+ phoneNumber));
				context.startActivity(callIntent);
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}
	
	/**
	 * 
	 * @param context
	 * @param phoneNumber
	 */
	public static void dialPhone(Context context, String phoneNumber){
		if(!TextUtils.isEmpty(phoneNumber)){
			try {
				Intent callIntent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:"+ phoneNumber));
				context.startActivity(callIntent);
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}


}