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In the Android project to use the JNI, when the use of Proguard, found that the native method can not find many variables, the original was Produard optimized out. Therefore, it is prudent to use Progurad in JNI applications.Workaround:1. Add a line to the ANDROID.MK:Local_proguard_flags: =-include $ (local_path)/proguard.flags2. Create a Proguard.flag file that writes classes and methods that do not require proguard optimization. For example:-keep cl

Packagemanagerservice is one of the Android system services. It provides the parsing, installation, update, mobile, and uninstallation functions of application packages. The system class diagram is as follows: Packagemanagerservice implements functions through the following classes: installer, usermanager, appdirobserver, settings, defaultinerservice, packagehelper, nativelibraryhelper, packagehandler, and packageparser. The installer class establish

resume is called, and the Level field is used to adjust the position of the struct in the registered list, and when suspend, the lower the number of levels, the sooner the callback function is called. Resume is the reverse. Android has pre-defined 3 levels:[CPP]View PlainCopy enum { Early_suspend_level_blank_screen = 50, early_suspend_level_stop_drawing = 100, EARLY_SUSPEND_LEVEL_DISABLE_FB = 150, }; struct Early_suspend { #ifdef Conf

); Minstancestate = null; } else {remembersyncstate (); } checkfocus (); Requestlayout (); } @Override public void oninvalidated () {mdatachanged = true; if (AdapterView.this.getAdapter (). Hasstableids ()) {//Remember the curRent state for the case where we hosting activity is being//stopped and later restarted m Instancestate = AdapterView.this.onSaveInstanceState (); }//Data is invalid so we should reset our state moldit

(ComponentName componentname, IBinder IBinder) {mserviece =NewMessenger (IBinder); Message msg = Message.obtain (); Bundle data =NewBundle (); Data.putstring ("MSG","Hello, this is client"); Msg.setdata (data);/** * Note: When a client sends a message, the messenger that receives the server reply is passed to the server via the Replayto parameter of the message */Msg.replyto = Mgetreplaymessenger;Try{mserviece.send (msg); }Catch(RemoteException e) {E.printstacktrace (); }

Http://www.ilingxi.com/blog/duanhongchang? P = 72 We all know that the finish method of the activity can only exit the current activity. But what if we want to exit all created activities with one click? We designed a class to manage the activity of the current activity through the singleton mode, called myactivitymanager. The Code is as follows: Import java. util. Collections list;Import java. util. List; Import