SipDemo的的onReceive()SipAudioCall给予的NullPointerException [英] SipDemo's onReceive() SipAudioCall NullPointerException give
问题描述
我创建来电由 SipDemo
Receive活动。我的活动有两个按钮接受呼叫和拒绝接听来电。当我拿到来电,然后我自己的活动是开放的,如
---->来电类----> 的onReceive()
---->去我的电话pick活动。
这里是这是接受和拒绝来电上述两个按钮等。但是,当我打的接受电话。 A 空指针异常
生成。它是SipAudiocall传入;
I am Creating incoming call Receive activity by SipDemo
. My activity has two button "accept call" and "reject call". When i got incoming call then my own activity is open such as
----> incoming call class ----> onReceive()
----> go to my call pick activity.
here is this above two button such as accept and reject call. but when i hit on "accept call" . A Nullpointer Exception
generate. it is on SipAudiocall incoming;
这是新来的学员: -
this is incoming class:-
static SipAudioCall incomingCall = null;
@Override
public void onReceive(final Context context, Intent intent) {
Intent startActivity = new Intent();
startActivity.setClass(context, Mycall.class);
startActivity.setAction(IncomingCallReceiver.class.getName());
startActivity.setFlags(
Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
context.startActivity(startActivity);
}
public static void acceptCall() {
incomingCall.sendDtmf(9);
try {
incomingCall.sendDtmf(9);
incomingCall.answerCall(200);
//wtActivity.gototimer("i");
} catch (SipException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// wtActivity.gototimer("i");
}
public void rejectCaLL() {
try {
incomingCall.endCall();
} catch (SipException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
这是我的电话pick活动类: -
This is my call pick activity class:-
public class Mycall extends Activity {
Button acct;
IncomingCallReceiver incomingCallReceiver;
@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);
setContentView(R.layout.my);
acct = (Button) findViewById(R.id.button1);
acct.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
IncomingCallReceiver.acceptCall();
}
});
}
}
这是AndroidManifest.xml中: -
This is AndroidManifest.xml :-
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.sip">
<application android:icon="@drawable/icon" android:label="SipDemo">
<service android:name=".MService">
</service>
<activity android:name=".WalkieTalkieActivity"
android:configChanges="orientation|keyboardHidden">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity android:name=".SipSettings" android:label="set_preferences"/>
<receiver android:name=".IncomingCallReceiver" android:enabled="true" android:label="Call Receiver">
<intent-filter>
<action android:name="android.SipDemo.INCOMING_CALL" />
</intent-filter>
</receiver>
<activity android:name=".Mycall"
>
</activity>
<activity android:name=".Myclass"/>
</application>
<uses-sdk android:minSdkVersion="9" />
<uses-permission android:name="android.permission.USE_SIP" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-feature android:name="android.hardware.sip.voip" android:required="true" />
<uses-feature android:name="android.hardware.wifi" android:required="true" />
<uses-feature android:name="android.hardware.microphone" android:required="true" />
请高手帮帮我。我参与了这个问题,因为1个月。
Please Expert Help me. I has involved this problem since 1 month.
我等待你的答复。
感谢您
推荐答案
Becouse您
IncomingCallReceiver incomingCallReceiver;
在调用它的时间空...
如果您创建一个静态类,你必须小心可能引发它的创造者法。
is null at time of calling it... If you create a static class you must take care to initiate it maybe in creator-method.
创建一个抽象类:
public abstract class IncomingCallReceiver
和改变你的方法公共静态最后
这篇关于SipDemo的的onReceive()SipAudioCall给予的NullPointerException的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!