android中Sip音频通话调研结果
分类： android移动开发 2011-10-19 15:54 1539人阅读 评论(0) 收藏 举报
首先简单介绍一下sip协议，sip是会话启动协议，主要用于网络多媒体通话。必须是android2.3或其以上版本才可以调用Sip api，并且设备必须支持sip才可以进行sip通话。
SIP使用的api主要放在android.net.sip中，其中最核心的类为SipManager.java，关系图如下所示：
本地的SipProfile存放在一个xml文件中，主要用于保存sip的username,domain和password，SharedPreference配置文件如下所示：
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<EditTextPreference
android:name="SIP Username"
android:summary="Username for your SIP Account"
android:defaultValue=""
android:title="Enter Username"
android:key="namePref" />
<EditTextPreference
android:name="SIP Domain"
android:summary="Domain for your SIP Account"
android:defaultValue=""
android:title="Enter Domain"
android:key="domainPref" />
<EditTextPreference
android:name="SIP Password"
android:summary="Password for your SIP Account"
android:defaultValue=""
android:title="Enter Password"
android:key="passPref"
android:password="true"
/>
</PreferenceScreen>更新SharedPreference的代码如下：
public void updatePreferences() {
Intent settingsActivity = new Intent(getBaseContext(),
SipSettings.class);
startActivity(settingsActivity);
}调用updatePreferences()方法会有如下的效果图显示：
1. <img alt="" src="https://s2.51cto.com/images/blog/202410/11070212_67085cf4263d226865.png?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_30,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=">
通过此界面可以修改本地的SipProfile帐号信息。
接打电话时需要更新对方SipProfile的信息，代码如下：
/**
* Updates the status box at the top of the UI with a messege of your choice.
* @param status The String to display in the status box.
*/
public void updateStatus(final String status) {
// Be a good citizen. Make sure UI changes fire on the UI thread.
this.runOnUiThread(new Runnable() {
public void run() {
TextView labelView = (TextView) findViewById(R.id.sipLabel);
labelView.setText(status);
}
});
}
/**
* Updates the status box with the SIP address of the current call.
* @param call The current, active call.
*/
public void updateStatus(SipAudioCall call) {
String useName = call.getPeerProfile().getDisplayName();
if(useName == null) {
useName = call.getPeerProfile().getUserName();
}
updateStatus(useName + "@" + call.getPeerProfile().getSipDomain());
}拨电话代码如下：
/**
* Make an outgoing call.
*/
public void initiateCall() {
updateStatus(sipAddress);
try {
SipAudioCall.Listener listener = new SipAudioCall.Listener() {
// Much of the client's interaction with the SIP Stack will
// happen via listeners. Even making an outgoing call, don't
// forget to set up a listener to set things up once the call is established.
@Override
public void onCallEstablished(SipAudioCall call) {
call.startAudio();
call.setSpeakerMode(true);
call.toggleMute();
updateStatus(call);
}
@Override
public void onCallEnded(SipAudioCall call) {
updateStatus("Ready.");
}
};
call = manager.makeAudioCall(me.getUriString(), sipAddress, listener, 30);
}
catch (Exception e) {
Log.i("WalkieTalkieActivity/InitiateCall", "Error when trying to close manager.", e);
if (me != null) {
try {
manager.close(me.getUriString());
} catch (Exception ee) {
Log.i("WalkieTalkieActivity/InitiateCall",
"Error when trying to close manager.", ee);
ee.printStackTrace();
}
}
if (call != null) {
call.close();
}
}
}接电话代码如下：
// Set up the intent filter. This will be used to fire an
// IncomingCallReceiver when someone calls the SIP address used by this
// application.
IntentFilter filter = new IntentFilter();
filter.addAction("android.SipDemo.INCOMING_CALL");
callReceiver = new IncomingCallReceiver();
this.registerReceiver(callReceiver, filter);
package com.example.android.sip;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.net.sip.*;
/**
* Listens for incoming SIP calls, intercepts and hands them off to WalkieTalkieActivity.
*/
public class IncomingCallReceiver extends BroadcastReceiver {
/**
* Processes the incoming call, answers it, and hands it over to the
* WalkieTalkieActivity.
* @param context The context under which the receiver is running.
* @param intent The intent being received.
*/
@Override
public void onReceive(Context context, Intent intent) {
System.out.println("IncomingCallReceiver::::::");
SipAudioCall incomingCall = null;
try {
SipAudioCall.Listener listener = new SipAudioCall.Listener() {
@Override
public void onRinging(SipAudioCall call, SipProfile caller) {
try {
call.answerCall(30);
} catch (Exception e) {
e.printStackTrace();
}
}
};
WalkieTalkieActivity wtActivity = (WalkieTalkieActivity) context;
incomingCall = wtActivity.manager.takeAudioCall(intent, listener);
incomingCall.answerCall(30);
incomingCall.startAudio();
incomingCall.setSpeakerMode(true);
if(incomingCall.isMuted()) {
incomingCall.toggleMute();
}
wtActivity.call = incomingCall;
wtActivity.updateStatus(incomingCall);
} catch (Exception e) {
if (incomingCall != null) {
incomingCall.close();
}
}
}
}
设置本地sip:
/**
* Handles SIP authentication settings for the Walkie Talkie app.
*/
public class SipSettings extends PreferenceActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
// Note that none of the preferences are actually defined here.
// They're all in the XML file res/xml/preferences.xml.
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences);
System.out.println("SipSettings::::::::::");
}
}
/**
* Handles SIP authentication settings for the Walkie Talkie app.
*/
public class SipSettings extends PreferenceActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
// Note that none of the preferences are actually defined here.
// They're all in the XML file res/xml/preferences.xml.
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences);
System.out.println("SipSettings::::::::::");
}
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