- A+
所属分类:AMS
public Intent registerReceiver(IApplicationThread caller, String callerPackage, IIntentReceiver receiver, IntentFilter filter, String permission, int userId) { enforceNotIsolatedCaller("registerReceiver"); ArrayList<Intent> stickyIntents = null; ProcessRecord callerApp = null; synchronized (this) { ReceiverList rl = mRegisteredReceivers.get(receiver.asBinder()); if (rl == null) { rl = new ReceiverList(this, callerApp, callingPid, callingUid, userId, receiver); if (rl.app != null) { rl.app.receivers.add(rl); } else { try { receiver.asBinder().linkToDeath(rl, 0); } catch (RemoteException e) { return sticky; } rl.linkedToDeath = true; } mRegisteredReceivers.put(receiver.asBinder(), rl); } else if (rl.uid != callingUid) { } else if (rl.pid != callingPid) { } else if (rl.userId != userId) { } BroadcastFilter bf = new BroadcastFilter(filter, rl, callerPackage, permission, callingUid, userId); rl.add(bf); if (!bf.debugCheck()) { Slog.w(TAG, "==> For Dynamic broadcast"); } mReceiverResolver.addFilter(bf); return sticky; } }
应用从应用注册的广播最终会到ams的registerReceiver接口。
这个接口做了一下事情:
1、检查是否在mRegisteredReceivers列表里面
2、如果没有就新建
3、然后添加 这个是常用的三段式代码
4、后面是对BroadcastFilter进行生产 和添加。
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