摘要：GC rootsThe so-called GC (Garbage Collector) roots are objects special for garbage collector. Garbage collector collects those objects that are not GC roots and are not accessible by references from GC roots.There are several kinds of GC roots. One object can belong to more than one kind of root. Th 阅读全文

摘要：startService:正常调用：onCreate->onStart取消绑定：onDestroy如果调用者自己直接退出而没有调用stopService,则Service会一直在后台运行，直到下次调用者再启动起来，并明确调用stopServicebindService正常调用：onCreate->onBind取消绑定：onUnbind->onDestroy先startService,再bindServiceonCreate->onStart->onBind(onCreate只调用一次）先stopService 再unbindService点stopService不 阅读全文