Android通过程序接听或者挂断电话

yc8055 8年前
   <p>这篇文章教你如何帮助用户自动接听或者挂断来电。当然并不是我原创的代码,我只不过是把stackoverflow上的一些代码整合了一下,做个代码的二传手。</p>    <h3><strong>源码</strong></h3>    <p>源码中用了MVP的模式,只是最简单的使用,如果不熟悉的话刚好可以学学,逻辑部分在IncomingPresenter类中。</p>    <h3><strong>首先需要监听来电的广播</strong></h3>    <p>在AndroidManifest文件中添加:</p>    <pre>  <receiver android:name=".incomingcall.PhoneListener">      <intent-filter android:priority="1000">          <action android:name="android.intent.action.PHONE_STATE" />          <category android:name="android.intent.category.DEFAULT" />      </intent-filter>      <intent-filter>          <action android:name="android.intent.action.BOOT_COMPLETED" />      </intent-filter>      <intent-filter>          <action android:name="android.intent.action.NEW_OUTGOING_CALL" />          <category android:name="android.intent.category.DEFAULT" />      </intent-filter>  </receiver></pre>    <p>当然还有权限:</p>    <pre>  <uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />      <uses-permission android:name="android.permission.READ_PHONE_STATE" /></pre>    <p>然后实现PhoneListener来实现来电监听:</p>    <pre>  public class PhoneListener extends BroadcastReceiver {      public void onReceive(Context context, Intent intent) {          String action = intent.getAction();          Log.e("PhoneListener",action);          if (action.equals(Intent.ACTION_NEW_OUTGOING_CALL)) {          } else {              TelephonyManager tm = (TelephonyManager) context                      .getSystemService(Service.TELEPHONY_SERVICE);              String incoming_number = "";              switch (tm.getCallState()) {                  case TelephonyManager.CALL_STATE_RINGING:                      incoming_number = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);                      try {                          //3s后再开启activity,是为了挡在系统的接听界面之前                          Thread.sleep(3000);                      } catch (InterruptedException e) {                          e.printStackTrace();                      }                      Intent tmpI = new Intent(context, IncomingCallActivity.class);                      tmpI.putExtra(IncomingCallActivity.INCOMING_CALL_NAME,incoming_number);                      tmpI.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);                      context.startActivity(tmpI);                      break;                  case TelephonyManager.CALL_STATE_OFFHOOK:                      break;                  case TelephonyManager.CALL_STATE_IDLE:                      break;              }          }      }  }</pre>    <h3><strong>然后就是接听或者挂断了</strong></h3>    <p>先说挂断</p>    <p>新建aidl文件:</p>    <pre>  package com.android.internal.telephony;  interface ITelephony{      boolean endCall();      void answerRingingCall();  }</pre>    <p>要注意包路径不能修改,要放置到正确路径下才行哦。</p>    <p>然后在需要挂断的时候,调用:</p>    <pre>  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) {          }      }</pre>    <p>很简单吧,其实就是通过反射的方式盗用Android系统的aidl通信来实现挂断的功能。</p>    <h3><strong>再说接听</strong></h3>    <p>看到挂断电话的代码后大家都能猜到,只要同样调用aidl的answerRingingCall()方法就可以接听了,是的,在4.1一下的版本中只有这样就行了:</p>    <pre>  public void acceptCall() {          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();          }      }</pre>    <p>可惜在4.1以上的版本中,谷歌给这个方法的调用设置了权限,如果不是系统应用,会收到permissDeny的异常。</p>    <p>不过没关系,这当然难不倒我们,看代码:</p>    <pre>  private static final String MANUFACTURER_HTC = "HTC";      public void acceptCall_4_1() {          //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(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));                  view.getActivity().sendOrderedBroadcast(btnDown, enforcedPerm);                  view.getActivity().sendOrderedBroadcast(btnUp, enforcedPerm);              }          } finally {              if (broadcastConnected) {                  broadcastHeadsetConnected(false);              }          }      }        private void broadcastHeadsetConnected(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 {              view.getActivity().sendOrderedBroadcast(i, null);          } catch (Exception e) {          }      }</pre>    <p>看代码很容易看出来,这里实际上是通过模拟无线耳机的按键来接听电话的。而对HTP的手机,需要进行一点特殊的处理,也就是通过广播的形式,让手机误以为连上了无线耳机。</p>    <p>以上功能在6.0的三星S6上实测过,也在许多其他我能拿到的手机上测试过,都可以正常挂断和接听。不过没测试过的手机肯定更多,如果无法接听可以给我留言,咱们一起研究。</p>    <p>不过请首先确保只是接听或者挂断功能不正常,而不是监听来电的功能不正常。</p>    <h3><strong>坑</strong></h3>    <p>我们做自动接听或者挂断的功能的时候,有可能是没有界面展示的,而是在service中直接就帮用户接听了,这种情况下是无法正常工作的,可能是android对非前台的应用做了一些限制。</p>    <p>怎么办呢?其实只要创建一个Activity就行了:</p>    <ol>     <li>监听到来电的时候,创建并显示一个1px*1px大小的空Activity;</li>     <li>在这个Activity中调用上述的acceptCall()方法;</li>     <li>监听到电话状态改变(被接听或者被挂断)以后,finish()掉这个Activity。</li>    </ol>    <p> </p>    <p>来自:http://www.jianshu.com/p/ab88284384e9</p>    <p> </p>