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<SmsApplicationData> getApplicationCollection(Context context) {PackageManager packageManager = context.getPackageManager();// Get the list of apps registered for SMSIntent intent = new Intent(Intents.SMS_DELIVER_ACTION);List<ResolveInfo> smsReceivers = packageManager.queryBroadcastReceivers(intent, 0);HashMap<String, SmsApplicationData> receivers = new HashMap<String, SmsApplicationData>();// 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 classintent = new Intent(Intents.WAP_PUSH_DELIVER_ACTION);intent.setDataAndType(null, "application/vnd.wap.mms-message");List<ResolveInfo> 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<ResolveInfo> 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<ResolveInfo> 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<SmsApplicationData> 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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