android2.2源码初探

由于代码中涉及到UI的布局，不得已看android源码。

源码系android-8即2.2

从调试环境看最初调用NativeStart.java中的main函数，经过底层的若干次调用，途经ActivityThread.java中的main函数调用，代码如下：

void main(String[] args) {

     SamplingProfilerIntegration.start();

     Process.setArgV0("<pre-initialized>");

     Looper.prepareMainLooper();

     ActivityThread thread = new ActivityThread();

     thread.attach(false);

     Looper.loop();

     if (Process.supportsProcesses()) {

         throw new RuntimeException("Main thread loop unexpectedly exited");

     }

     thread.detach();

     String name = (thread.mInitialApplication != null)

         ? thread.mInitialApplication.getPackageName()

         : "<unknown>";

     Slog.i(TAG, "Main thread of " + name + " is now exiting");

 }