discovery mode android

to a component through intent , The corresponding component list is found in the PMS based on the information contained in the intent, and finally jumps to the target component.NO11:One of the most important uses of prototype mode is a protective copy , which means that an object may be read-only, and in order to prevent external modifications to this read-only object, it is often possible to implement a read-only restriction by returning a copy of t

Android, in fact, the core is one: no matter how the upper layer of reinforcement, eventually loaded into the memory of the Dex is certainly not a reinforcement, so this dex is what we want, Ida is used here to dynamically debug the Dvmdexfileopenpartial function in libdvm.so to get the Dex content in memory, and it can also be obtained using Gdb+gdbserver, the interested classmate to search by themselves. Combined with the previous two articles, eve

used.In the Android source code. When the app starts. The first time a virtual machine loads the class, it will register various servicefetcher, such as the Layoutinflater Service. Store these services in a hashmap in the form of key-value pairs. Users only need to rely on key to obtain the corresponding servicefetcher. The detailed service object is then obtained through the GetService function of the Servicefetcher object. When the first time is ac

. setPerson ("eight rings ");Lists. add (tangseng. getMessage ());ArrayAdapter Android. R. layout. simple_list_item_1, lists );ListView. setAdapter (adapter );}}Public class XiyoujiActivity extends Activity { Private ListView listView; /** Called when the activity is first created .*/@ OverridePublic void onCreate (Bundle savedInstanceState ){Super. onCreate (savedInstanceState );SetContentView (R. layout. main ); ListView = (ListView) findViewById (R

public static Singleton getinstance () { return instance; }}Three. Summaryaccording to the above analysis, it is clear that the A hungry man mode does not have to face the problem of thread concurrency. And the A Hungry man mode is better than the lazy mode from the call speed and response time. But the lazy model is better than the A hungry man

Android design mode-decoration Mode 1. Definition: Attach additional responsibilities to an object dynamically keeping the same interface.Decoators provide a flexible alternative to subclassing for extending functionality. Dynamically extends the functions of an object without changing the original class file and using inheritance. It creates a packaging object,

* @date 2014.08.20 */public class T Emplatemain {/** * @param args */public static void main (string[] args) {//TODO auto-generated method Stubcoffeinewithhoo K Coffhook = new Coffeinewithhook (); Teawithhook Teahook = new Teawithhook (); Coffhook.preparerecipe (); System.out.println ("---------------------------------------------------------------"); Teahook.preparerecipe ();}}Summarize:1, template method is a kind of code reuse basic technology. They are particularly important in class librar

Administrator * */public class Singletonidler {private static Sing Letonidler instance = Null;private Singletonidler () {}public static Singletonidler getinstance () {if (instance = = null) {s Ynchronized (Singletonidler.class) {if (instance = = null) instance = new Singletonidler ();}} return instance;}}Singleton mode is also used in Androidd native applications, such as phoneNotificationmgr.java classprivate static Notificationmgr sinstance;privat

specific implementation class. Wukong: Public class Wukong implements person {private string name; private string message; Public Wukong () {This. name = "Sun Wukong" ;}@ overridepublic void setmessage (string message) {This. message = message;} @ overridepublic string getmessage () {return name + "received" + message ;}} Wukong received a message from the master and returned it to the master. He knew that the master was arrested and would save him as soon as possible. Finally, the implem

For the control of GPs on Android, the official provides the relevant APISettings.Secure.setLocationProviderEnabled (Getcontentresolver (), Locationmanager.gps_provider, true);But when we call the Setlocationproviderenabled method, the system throws an exception prompt that requires Android.permission.WRITE_SECURE_SETTINGS permission, even if The same is true for requests that add this permission in Mainfest. Setlocationproviderenabled This method req

custom Bean objects from different setters.classbean{classbuilder{intXintY PublicvoidSetX (intx) { This. x = x;} PublicvoidSety (intY) { This. y = y;} PublicBean Build () {returnNewBuilder ();}}}How customers use the Builder mode:Bean Bean = (NewBean.builder ()). SetX (8). Sety (9). build ();Bean Bean2=(NewBean.builder ()). SetX (1). Sety (2). build ();Beans and Bean2 are 2 completely separate objects, and each individual object is created without a change in the thread safety caused by the pr

Problem: In Android, APK can have, QQ as the representative of plug-in installation update function;So the problem is, the main system (let's say) call the plug-in installation subsystem, by the subsystem to provide external access, is not a form of appearance mode it?First, design mode:1. Definition:Provides a unified interface for a set of interfaces in a subsy

Android design mode-perfect Singleton Mode Android perfect Singleton mode: The previous Singleton mode was not fully considered; This problem was obtained during the interview; Even with such a problem, we can see that the example

structure, the "Hollywood Rule": "Don ' t call Me,i will calls you.", that is, a parent class invokes the operation of a subclass, not the other way around.(3). The type of the template invoke operation has specific operations, specific abstracclass operations, primitive operations, factory methods, hook operations. The primitive operation is less defined.(4). The name of these redefined actions in Android likes to prefix the method with a suffix on.

alternative to inheritance, and maintains the advantages of inheritance (code reuse) and is more flexible than inheritance (algorithms are independent and can be expanded at will ). Avoid using multiple conditional transfer statements in the program to make the system more flexible and easy to expand. Comply with most grasp principles and common design principles, high cohesion and low coupling. Disadvantages: 1. Because each specific policy class generates a new class, the number of classes

Android in the combination of the application of the model is flooded into porridge, everywhere, that is the use of the view and ViewGroup class. In the Android UI design, almost all widgets and layout classes rely on these two classes.The combination mode, Composite pattern, is a very ingenious pattern. Almost all object-oriented systems are applied to the combi

Android design mode-Singleton mode under what circumstances do I need a singleton mode? Some classes provide common functionality for others to invoke and do not handle business logic by themselves Classes are called by many classes and threads Design a singleton modepublicclass Singleton{privatestati

;} return strategypattern.calclottery (num);}}The strategy model is widely used in the Android Framework;For example, the baseadapter that we often use is actually a strategic model;The adapters we write inherit from Baseadapter, implementing different algorithms in the GetView to implement different view returns,External use can also be based on the data source, switch adapter, such use is actually a strategy mod