Android接听、挂断电话

新建一个名为ITelephony的aidl文件，注意包名不能改变，因为是通过反射方式来实现接听和挂断的

ITelephony.aidl
package com.android.internal.telephony;
interface ITelephony{
    boolean endCall();
    void answerRingingCall();
}

public class CallManager {
    private static CallManager instance = null;

    private static final String MANUFACTURER_HTC = "HTC";

    public static synchronized CallManager getInstance() {
        if (instance == null) {
            instance = new CallManager();
        }
        return instance;
    }

    /** 接听电话*/
    public void acceptCall(Context context) {
        try {
            Method method = Class.forName("android.os.ServiceManager")
                    .getMethod("getService", String.class);
            IBinder binder = (IBinder) method.invoke(null, new Object[]{Context.TELEPHONY_SERVICE});
            ITelephony telephony = ITelephony.Stub.asInterface(binder);
            telephony.answerRingingCall();
        } catch (Exception e) {
            Log.e(TAG, "for version 4.1 or larger");
            acceptCall_4_1(context);
        }
    }

    /**4.1版本以上接听电话*/
    public void acceptCall_4_1(Context context) {
        AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
        ;
        //模拟无线耳机的按键来接听电话
        // for HTC devices we need to broadcast a connected headset
        boolean broadcastConnected = MANUFACTURER_HTC.equalsIgnoreCase(Build.MANUFACTURER)
                && !audioManager.isWiredHeadsetOn();
        if (broadcastConnected) {
            broadcastHeadsetConnected(context, false);
        }
        try {
            try {
                Runtime.getRuntime().exec("input keyevent " +
                        Integer.toString(KeyEvent.KEYCODE_HEADSETHOOK));
            } catch (IOException e) {
                // Runtime.exec(String) had an I/O problem, try to fall back
                String enforcedPerm = "android.permission.CALL_PRIVILEGED";
                Intent btnDown = new Intent(Intent.ACTION_MEDIA_BUTTON).putExtra(
                        Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_DOWN,
                                KeyEvent.KEYCODE_HEADSETHOOK));
                Intent btnUp = new Intent(Intent.ACTION_MEDIA_BUTTON).putExtra(
                        Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_UP,
                                KeyEvent.KEYCODE_HEADSETHOOK));
                context.sendOrderedBroadcast(btnDown, enforcedPerm);
                context.sendOrderedBroadcast(btnUp, enforcedPerm);
            }
        } finally {
            if (broadcastConnected) {
                broadcastHeadsetConnected(context, false);
            }
        }
    }

    private void broadcastHeadsetConnected(Context context, boolean connected) {
        Intent i = new Intent(Intent.ACTION_HEADSET_PLUG);
        i.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
        i.putExtra("state", connected ? 1 : 0);
        i.putExtra("name", "mysms");
        try {
            context.sendOrderedBroadcast(i, null);
        } catch (Exception e) {
        }
    }

    /** 拒绝接听*/
    public void rejectCall() {
        try {
            Method method = Class.forName("android.os.ServiceManager")
                    .getMethod("getService", String.class);
            IBinder binder = (IBinder) method.invoke(null, new Object[]{Context.TELEPHONY_SERVICE});
            ITelephony telephony = ITelephony.Stub.asInterface(binder);
            telephony.endCall();
        } catch (NoSuchMethodException e) {
            Log.d(TAG, "", e);
        } catch (ClassNotFoundException e) {
            Log.d(TAG, "", e);
        } catch (Exception e) {
        }
    }
}