Update Service 组件的启动过程.md

master
Omooo 4 years ago
parent dce40f9925
commit 78e91f9d4c
  1. 49
      blogs/Android/Framework/源代码情景分析/四大组件的启动过程/Service 组件的启动过程.md

@ -454,5 +454,54 @@ ConnectionRecord 类的成员变量 conn 是一个类型为 IServiceConnection
```java
// LoadedApk
static final class ServiceDispatcher {
private static class InnerConnection extends IServiceConnection.Stub {
final WeakReference<LoadedApk.ServiceDispatcher> mDispatcher;
public void connected(ComponentName name, IBinder service) {
LoadedApk.ServiceDispatcher sd = mDispatcher.get();
sd.connected(name, service);
}
}
}
```
有调到了 ServiceDispatcher 的 connected 方法:
```java
// LoadedApk
static final class ServiceDispatcher {
private final Handler mActivityThread;
public void connected(ComponentName name, IBinder service) {
mActivityThread.post(new RunConnection(name, service, 0));
}
static final class RunConnection implements Runnable {
RunConnection(ComponentName name, IBinder service, int command) {
mName = name;
mService = service;
mCommand = command;
}
public void run() {
doConnected(mName, mService);
}
final ComponentName mName;
final IBinder mService;
final int mCommand;
}
}
```
调用 ServiceDispatcher 类的成员函数 doConnected 将 RunConnection 类内部成员函数 mService 所描述的一个 Binder 本地对象传递给 Activity 组件。
```java
// ServiceDispatcher
public void doConnected(ComponentName name, IBinder service) {
mConnection.onServiceConnected(name, service);
}
```
至此,Activity 组件绑定 Service 组件的过程就分析完成了,Activity 组件获得了 Service 组件的访问接口之后,就可以调用相关服务了。
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