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以下是 SipDemo（voip 接听电话）的一部分：

public class WalkieTalkieActivity extends Activity {
...
public IncomingCallReceiver callReceiver;
public SipManager manager = null;

@Override
public void onCreate(Bundle savedInstanceState) {

...

     IntentFilter filter = new IntentFilter();
    filter.addAction("android.SipDemo.INCOMING_CALL");
    callReceiver = new IncomingCallReceiver();
    this.registerReceiver(callReceiver, filter);


    initializeManager();
}

public void initializeManager() {
    initializeLocalProfile();
}

public void initializeLocalProfile() {

        SipProfile.Builder builder = new SipProfile.Builder(username, domain);
        builder.setPassword(password);
        me = builder.build();

        Intent i = new Intent();
        i.setAction("android.SipDemo.INCOMING_CALL");
        PendingIntent pi = PendingIntent.getBroadcast(this, 0, i, Intent.FILL_IN_DATA);
        manager.open(me, pi, null);

和广播接收器

public class IncomingCallReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
SipAudioCall incomingCall = null;
    try {

        SipAudioCall.Listener listener = new SipAudioCall.Listener() {
        };

        WalkieTalkieActivity wtActivity = (WalkieTalkieActivity) context;
        incomingCall = wtActivity.manager.takeAudioCall(intent, listener);

        incomingCall.answerCall(30);
    ...

        wtActivity.call = incomingCall;

它工作得很好，但即使应用程序在后台运行，我也需要能够接听电话。所以我尝试以其他方式实现广播接收器（不是在活动中，而是在清单中）。于是删了：

     IntentFilter filter = new IntentFilter();
    filter.addAction("android.SipDemo.INCOMING_CALL");
    callReceiver = new IncomingCallReceiver();
    this.registerReceiver(callReceiver, filter);

并在清单中添加

          <intent-filter>
             <action android:name="android.SipDemo.INCOMING_CALL"/>
        </intent-filter>

但现在它不起作用，incomingCall 始终为空。

在更改之前，BroadcastReceiver 得到了

context ==  com.example.android.sip.WalkieTalkieActivity@4051c5e8

和改变后

context == android.app.ReceiverRestrictedContext@4058ac48

也许这是问题，但有人知道如何解决它吗？

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1 回答 1

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您应该将这些SipProfile东西从您的活动中移出并放入服务中。然后您的 BroadcastReceiveronReceive()可以启动服务并让它处理呼叫。context你进入的是onReceive()短暂的，你只能用它做某些事情。

于 2013-01-04T15:58:48.823 回答