如何在Android 5.0（Lollipop）中以编程方式回复来电？

Question

如何在Android 5.0（Lollipop）中以编程方式回复来电？当我尝试为来电创建自定义屏幕时，我正在尝试以编程方式接听来电。我使用以下代码但它在Android 5.0中不起作用。// Simulate a press of the headset button to pick up the callIntent buttonDown = new Intent(Intent.ACTION_MEDIA_BUTTON);             buttonDown.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_HEADSETHOOK));context.sendOrderedBroadcast(buttonDown, "android.permission.CALL_PRIVILEGED");// froyo and beyond trigger on buttonUp instead of buttonDownIntent buttonUp = new Intent(Intent.ACTION_MEDIA_BUTTON);               buttonUp.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_HEADSETHOOK));context.sendOrderedBroadcast(buttonUp, "android.permission.CALL_PRIVILEGED");

Answer 1

完全可行的解决方案基于@Valter Strods代码。

要使其正常工作，您必须在锁定屏幕上显示（不可见）活动，其中执行代码。

AndroidManifest.xml中

<uses-permission android:name="android.permission.WAKE_LOCK" /><uses-permission android:name="android.permission.DISABLE_KEYGUARD" /><activity android:name="com.mysms.android.lib.activity.AcceptCallActivity"
        android:launchMode="singleTop"
        android:excludeFromRecents="true"
        android:taskAffinity=""
        android:configChanges="orientation|keyboardHidden|screenSize"
        android:theme="@style/Mysms.Invisible">
    </activity>

致电接受活动

package com.mysms.android.lib.activity;import android.app.Activity;import android.app.KeyguardManager;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.media.AudioManager;import android.os.Build;import android.os.Bundle;import android.telephony.TelephonyManager;import android.view.KeyEvent;import android.view.WindowManager;import org.apache.log4j.Logger;import java.io.IOException;public class AcceptCallActivity extends Activity {

     private static Logger logger = Logger.getLogger(AcceptCallActivity.class);

     private static final String MANUFACTURER_HTC = "HTC";

     private KeyguardManager keyguardManager;
     private AudioManager audioManager;
     private CallStateReceiver callStateReceiver;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);

         keyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
         audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
     }

     @Override
     protected void onResume() {
         super.onResume();

         registerCallStateReceiver();
         updateWindowFlags();
         acceptCall();
     }

     @Override
     protected void onPause() {
         super.onPause();

         if (callStateReceiver != null) {
              unregisterReceiver(callStateReceiver);
              callStateReceiver = null;
         }
     }

     private void registerCallStateReceiver() {
         callStateReceiver = new CallStateReceiver();
         IntentFilter intentFilter = new IntentFilter();
         intentFilter.addAction(TelephonyManager.ACTION_PHONE_STATE_CHANGED);
         registerReceiver(callStateReceiver, intentFilter);
     }

     private void updateWindowFlags() {
         if (keyguardManager.inKeyguardRestrictedInputMode()) {
              getWindow().addFlags(
                       WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
                                WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON |
                                WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
         } else {
              getWindow().clearFlags(
                       WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
                                WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON |
                                WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
         }
     }

     private void acceptCall() {

         // 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 {
                  logger.debug("execute input keycode headset hook");
                  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
                  logger.debug("send keycode headset hook intents");
                  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));

                  sendOrderedBroadcast(btnDown, enforcedPerm);
                  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 {
              sendOrderedBroadcast(i, null);
         } catch (Exception e) {
         }
     }

     private class CallStateReceiver extends BroadcastReceiver {
         @Override
         public void onReceive(Context context, Intent intent) {
              finish();
         }
     }}

样式

<style name="Mysms.Invisible">
    <item name="android:windowFrame">@null</item>
    <item name="android:windowBackground">@android:color/transparent</item>
    <item name="android:windowContentOverlay">@null</item>
    <item name="android:windowNoTitle">true</item>
    <item name="android:windowIsTranslucent">true</item>
    <item name="android:windowAnimationStyle">@null</item></style>

最后召唤魔法！

Intent intent = new Intent(context, AcceptCallActivity.class);intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK            | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);context.startActivity(intent);