firefox for android review

1, four components of the activity life cycle, starting mode, kinship service life cycle, running process, data transfer mode, Aidlcontent provider application scenarios, production steps broadcast receiver Way2, Other: Data storage: sharepreference, file, SQLite and database object serialization: Parcelable and serializable data transfer methods of the four components intent and how the parameters are assigned, Which flag has handler,looper,handlerthread,asynctask timer Alarmmanager and timer H

: (generally used in development)2 3 once the single class is loaded, the memory allocates space to the object s4 */5 Public classSingle {6 7 //privatization of constructor functions8 9 PrivateSingle () {}Ten One 　　 //create this class of objects (private and static constant quantization) A 　　 - Private Static FinalSingle S =NewSingle (); - the 　　 //You can define a set method in a class, but only a unique exit function - - 　　 //gets the method of the object - + Public StaticSingl

Toast.maketext (This.getapplication (), "Hello toast^ ^^ ^^ ^", 1). Show ();1 features : (1) No focus(2) The displayed time is limited and will disappear automatically.2: Parameter Description:First parameter: Contextual context of the appThe context provides an interface for global information about the application environment. It is an abstract class, it is implemented by theProvided by the Android system. Through the context we can load resources

(Android review) Task Stack and startup mode, androidreview This knowledge point is mainly understood as follows: I. task stack) 1. function: it is used to manage the activity entry and exit. Records user behaviors. 2. Example: Perform the following operations: At this time, the activity in the task stack is as follows: Ii. Startup Mode 1. Configuration: For example: XXXXAndroid: configChanges = "ori

(Android review) explicit and implicit intent Activation I. Basic knowledge points 1, Label attribute: the title of an Acivity. 2. Do not introduce the R file into an error. 3. intent. setClass (this, Main2Activity. class ); First parameter: Context Second parameter: the bytecode file of the component to be activated 4. Explicit activation (explicitly specifying the component to be activated

=NewGson (); @Override PublicString ToJson (Object src) {returnGson.tojson (SRC); } @Override PublicClaxx) { returnGson.fromjson (JSON, Claxx); } @Override Publicbyte[] Bytes, classClaxx) { returnGson.fromjson (NewString (bytes), Claxx); } @Override PublicClaxx) {Type type=NewTypetoken() {}.gettype (); ListGson.fromjson (JSON, type); returnlist; }}The following focuses on the knowledge points of generics in the Java Foundation:First: Generics are a new feature provided by java1.5,

Android framework review sp and wp sp objectsUse MediaPlayer to describe the implementation of sp. Sp is a template class, and T is a subclass of RefBase. Sp can be used for any class inherited from RefBase. The binder class also inherits the RefBase class. The implementation of the binder is inseparable from the RefBase class. Use the following code to explain my doubts. 201 static sp GetMediaPlayer (

Before Lao Zhang taught C when said: The more learning, summed up the less, the better.The beginning of the time can not understand, now finally slowly realized.Prepare to slowly summarize the commonly used Android Foundation, is to relive the good memories of it. Personal blog record personal experience, hope to be happy and can help others.Let's start with the layout:Summarize relative layouts: 1. Parent control's relationship to child controls (ALI

Intent is an important way to jump through components in Android, and is generally pathetic for scenarios such as initiating activities, starting services, and sending broadcasts.#显示IntentPrimarily used to start a known componentSending partyIntent Intent = new Intent (firstactivity.this, Secondactivity.class);Intent.putextra ("Extra_data", data);StartActivity (Intent);Receiving partyIntent Intent = Getintent ();String data = Intent.getstringextra ("E

1.jdk+eclipse+ environment variable Configuration (note here to download the JDK corresponding to your computer's number of bits, otherwise there will be a puzzling problem.) In particular, just changed the system of students, the former 32-bit now for 64-bit system, the diagram is convenient to change the path directly);2.android SDK is the official website of the dynasty wall, do not be afraid to find a reliable site next to the latest version of, o

Many programs many programs apes may be the same as me, when the company developed the project, the completion of the function is the first, so always appear, here should be able to write better, next version. The recent project is nearing the end and feels like a new look at the project, which should be one of the best ways to improve yourself and optimize your project.End of nonsense ....First, shareProgramme I: Share directly with friends of the leagueHttp://dev.umeng.com/social/

There are two ways of broadcasting , a static broadcast and a dynamic broadcast.Static broadcast---static broadcast receivers are registered inside the configuration file.Dynamic broadcast receivers are registered in the code.Sending of broadcasts:Context.sendbroadcast ();Context.sendorderedbroadcast ();Context.sendstickybrodcast ();A broadcast can be received by multiple broadcast receivers.Broadcast receivers can only accept broadcasts and respond to broadcast notifications.The broadcast recip

(Android review) basic use of handler I. Basic knowledge points 1. Intent intent = new Intent (); // open the browser'sIntent. setAction (Intent. ACTION_VIEW );Intent. setData (Uri. parse ("http://www.baidu.com "));2. SystemClock. sleep (20000); // sleep for 20 seconds to hide the game3. Time-consuming operations should be performed in sub-threadsObtain data onlineCopying large filesMust be placed in the s

Android framework camera review-Relationship between Camera CameraClient ICamera (1)-cl and c-) Where does mCamera go? Status_t Camera: connectLegacy (int cameraId, int halVersion, const String16 clientPackageName, {sp C = new Camera (cameraId); s Int clientUid, sp Amp; camera) p Cl = c; const sp Cs = CameraBaseT: getCameraService (); if (cs! = 0) {ra);} // analysis} status = cs. get ()

It belongs to the leak check.Java source files are compiled to generate a class file/bytecode file to help you achieve a truly cross-platform. A class is compiled into a class file. The execution is then interpreted through the JVM (the Java Virtual machine).Java of 8 a basic data type :Four integer types: Byte (1 bytes different and range different 2^7~2^7), short (2), int (4), Long (8)Two floating-point types: Float (4), double (8)Boolean type: Boolean (1)Character type: char (2)Java Specifica

standard MD5 encryption in returnbuffer.tostring (); -}Catch(nosuchalgorithmexception e) { to //TODO auto-generated Catch block + E.printstacktrace (); - return""; the } * } $}2, in the Homeactivity.java to use sharedpreferences saved password data to call encryption1 a change to MD5 encryption when you save a password to a file for the first time you set a password:2 if(Password.equals (password_confirm)) {3 //In the same way, save the password, the d

Development environment: Myclipse (server side) + Eclipse (Mobile client) + MySQL databaseStudent: School number, login password, name, gender, date of birth, contact number, home addressCanteen: Canteen ID, canteen nameType of cuisine: Category ID, category nameType of Cuisine: item number, canteen, category of dish, name of dish, dish picture, price of dishes, description of dishesComments: Comment ID, rated food, rating, reviews, reviews student, comment timeSystem client and server-side Arch

(Android review) Task Stack and Startup Mode This knowledge point is mainly understood as follows: I. task stack) 1. function: it is used to manage the activity entry and exit. Records user behaviors. 2. Example: Perform the following operations: At this time, the activity in the task stack is as follows: VcD48cD62/qGixvS2r8Sjyr08L3A + PHA + Environment + PHA + PGFjdGl2aXR5PGJyIC8 + Environment

Android boot speed, basically no one said fast, usually after the system transplant, the immediate thing to see is to optimize the boot time, the following is a simple recall of the following before the optimization of those things.Where do you spend your boot time?Optimize the boot time, usually do the first is that there is no bug, obviously unreasonable first to solve, due to the development phase stability, some places may delay plus the large, or

#Activity注册Android Four components (Activity,service,broadcast Receiver, Content Provider) need to be registered in AndroidmanifestAndroid:name= ". Firstactivity "Android:label= "This is firstactivity" >#Activity生命活动状态1. Operation Status: Foreground running, at the top of the return stack, the system will not be recycled2. Paused state: Not at the top of the stack, but still visible, when low memory is recycled3. Stop status: Run in the background, sa