android4.4获取符合默认短信应用要求的短信应用包名（改进篇）

从上一篇获取符合默认短信应用来看，获取思路是正确的，但是还很不完善，但是这归根结底是google整出来的一套规范，如何去找到符合规范的应用呢，这得google告诉我们。

因此，我看了一下android源码，关键是SmsApplication中的SmsApplicationData， 里面有个函数叫getApplicationCollection(Context context)，这就是android4.4中系统用于获取符合默认短信应用要求的应用信息的代码，如下：

/**
* Returns the list of available SMS apps defined as apps that are registered for both the
* SMS_RECEIVED_ACTION (SMS) and WAP_PUSH_RECEIVED_ACTION (MMS) broadcasts (and their broadcast
* receivers are enabled)
*
* Requirements to be an SMS application:
* Implement SMS_DELIVER_ACTION broadcast receiver.
* Require BROADCAST_SMS permission.
*
* Implement WAP_PUSH_DELIVER_ACTION broadcast receiver.
* Require BROADCAST_WAP_PUSH permission.
*
* Implement RESPOND_VIA_MESSAGE intent.
* Support smsto Uri scheme.
* Require SEND_RESPOND_VIA_MESSAGE permission.
*
* Implement ACTION_SENDTO intent.
* Support smsto Uri scheme.
*/
public static Collection getApplicationCollection(Context context) {
PackageManager packageManager = context.getPackageManager();
// Get the list of apps registered for SMS
Intent intent = new Intent(Intents.SMS_DELIVER_ACTION);
List smsReceivers = packageManager.queryBroadcastReceivers(intent, 0);
HashMap receivers = new HashMap();
// Add one entry to the map for every sms receiver (ignoring duplicate sms receivers)
for (ResolveInfo resolveInfo : smsReceivers) {
final ActivityInfo activityInfo = resolveInfo.activityInfo;
if (activityInfo == null) {
continue;
}
if (!permission.BROADCAST_SMS.equals(activityInfo.permission)) {
continue;
}
final String packageName = activityInfo.packageName;
if (!receivers.containsKey(packageName)) {
final String applicatiOnName= resolveInfo.loadLabel(packageManager).toString();
final SmsApplicationData smsApplicatiOnData= new SmsApplicationData(
applicationName, packageName, activityInfo.applicationInfo.uid);
smsApplicationData.mSmsReceiverClass = activityInfo.name;
receivers.put(packageName, smsApplicationData);
}
}
// Update any existing entries with mms receiver class
intent = new Intent(Intents.WAP_PUSH_DELIVER_ACTION);
intent.setDataAndType(null, "application/vnd.wap.mms-message");
List mmsReceivers = packageManager.queryBroadcastReceivers(intent, 0);
for (ResolveInfo resolveInfo : mmsReceivers) {
final ActivityInfo activityInfo = resolveInfo.activityInfo;
if (activityInfo == null) {
continue;
}
if (!permission.BROADCAST_WAP_PUSH.equals(activityInfo.permission)) {
continue;
}
final String packageName = activityInfo.packageName;
final SmsApplicationData smsApplicatiOnData= receivers.get(packageName);
if (smsApplicationData != null) {
smsApplicationData.mMmsReceiverClass = activityInfo.name;
}
}
// Update any existing entries with respond via message intent class.
intent = new Intent(TelephonyManager.ACTION_RESPOND_VIA_MESSAGE,
Uri.fromParts("smsto", "", null));
List respOndServices= packageManager.queryIntentServices(intent, 0);
for (ResolveInfo resolveInfo : respondServices) {
final ServiceInfo serviceInfo = resolveInfo.serviceInfo;
if (serviceInfo == null) {
continue;
}
if (!permission.SEND_RESPOND_VIA_MESSAGE.equals(serviceInfo.permission)) {
continue;
}
final String packageName = serviceInfo.packageName;
final SmsApplicationData smsApplicatiOnData= receivers.get(packageName);
if (smsApplicationData != null) {
smsApplicationData.mRespOndViaMessageClass= serviceInfo.name;
}
}
// Update any existing entries with supports send to.
intent = new Intent(Intent.ACTION_SENDTO,
Uri.fromParts("smsto", "", null));
List sendToActivities = packageManager.queryIntentActivities(intent, 0);
for (ResolveInfo resolveInfo : sendToActivities) {
final ActivityInfo activityInfo = resolveInfo.activityInfo;
if (activityInfo == null) {
continue;
}
final String packageName = activityInfo.packageName;
final SmsApplicationData smsApplicatiOnData= receivers.get(packageName);
if (smsApplicationData != null) {
smsApplicationData.mSendToClass = activityInfo.name;
}
}
// Remove any entries for which we did not find all required intents.
for (ResolveInfo resolveInfo : smsReceivers) {
final ActivityInfo activityInfo = resolveInfo.activityInfo;
if (activityInfo == null) {
continue;
}
final String packageName = activityInfo.packageName;
final SmsApplicationData smsApplicatiOnData= receivers.get(packageName);
if (smsApplicationData != null) {
if (!smsApplicationData.isComplete()) {
receivers.remove(packageName);
}
}
}
return receivers.values();
}
/**
* Checks to see if we have a valid installed SMS application for the specified package name
* @return Data for the specified package name or null if there isn‘t one
*/
private static SmsApplicationData getApplicationForPackage(
Collection applications, String packageName) {
if (packageName == null) {
return null;
}
// Is there an entry in the application list for the specified package?
for (SmsApplicationData application : applications) {
if (application.mPackageName.contentEquals(packageName)) {
return application;
}
}
return null;
}
从源码的实现来看，我上一篇关于这个功能的blog思路相当正确，只不过没用让它几个条件同时满足，因此，若我们需要获取符合默认短信应用要求的短信应用包名的话，我们只要原原本本地把源码搞出来用就行了

由于这个是隐藏的类和函数，我们获取不到，用反射又会相当麻烦，直接把实现给拷出来不失为一个良策。

要判断拿到的collection中的某一个是不是完全符合默认短信应用的要求怎么办呢？调用一下SmsApplication.isComplete()就OK了。

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