android data usage settings

. Complete the submission Editor.commit (); B, read the data information1. Get Preferences Sharedpreferences settings = getsharedpreferences ("setting", 0); 2. Take out the data String name = settings.getstring ("name", "Default value");String url = setting.getstring ("url", "Default"); This is how sharedpreferences is us

Android Handler Usage Analysis, androidhandler1. Handler usage Now, as a customer, there is a need to start the countdown when the Activity interface is opened. After the countdown is over, the new interface will jump (a user with active thinking may immediately think that if the countdown is turned on, similar to the pop-up page of each APP), for example: As a

1. Use Android API functions to view1.1 activitymanager view available memory.Activitymanager. memoryinfo outinfo = new activitymanager. memoryinfo ();Am. getmemoryinfo (outinfo );Outinfo. availmem is available idle memory.1.2. Android. OS. debug queries memory usage information of a single process, such as PSS, VSS, and USS.Memoryinfo [] memoryinfoarray = aM. ge

radio box and check boxTo create a dialog box with a multiple-selection list or a single-selection list, use the Setmultichoiceitems () and Setsinglechoiceitems () methods. If you create a selectable list in Oncreatedialog (), Android automatically manages the status of the list. As long as activity remains active, the dialog remembers the option you just selected, but the selection is lost when the user exits the activity.Note: To save your selectio

must be executed before executing the Monkeyrunner, otherwise monkeyrunner cannot connect the device.Open the Android emulator with Elipse or open the emulator with the android command in CMD. Here's the point. Open simulator with android command in CMDCommand:EMULATOR-AVD test (Note: The name of the test for the virtual device--AVD is full:

://www.android.com/"); HttpURLConnection URLConnection = (httpurlconnection) url.openconnection (); try {inputstream in = new BufferedInputStre AM (Urlconnection.getinputstream ()); Readstream (in); This method is written by ourselves, from the stream to save the data to the local, to achieve from the network to obtain data. finally {urlconnection.disconnect ();} When you submit

registering time-based sampling functions (registered using register_timer_hook, enable the clock interrupt handler to access the program when it finally executes profile_tick), and place the sample in the kernel buffer. The latter runs in the background to collect data from the kernel space and write the file. The host runs on the PC, including a set of post-processing tools used to generate readable analysis reports from raw sample

This paper introduces the MediaPlayer usage of Android, and introduces the Surfaceview,surfaceview because it can obtain image data directly from hardware interfaces such as memory or DMA, so it is a very important drawing container, This time I will introduce the usage of surfaceview in more detail. There are many use

decide the best location1 [internal]: Install on internal device storage2 [external]: Install on external media1. Usage:1.1: View installed packages:Pm list packageThe names of all installed packages are displayed.Pm list package-fThe directory where the associated file is located (that is, the saved APK file) is also displayed)1.2: view known permission groups:Pm list permission-groups1.3: view all known permissions:Pm list permissions1.4: list all

: Android batch inserts data to the SQLite database. Line 88A general query method is encapsulated here. The SQL method is not used to encapsulate it because the query method provided by SQLiteDatabase is more generic. We can see from the parameters. The usage of the Cursor object is similar to the ResultSet in JDBC. It is easy to understand. After the DAO layer

Android handler HandlerThread usage I. Handler Handler is responsible for sending and processing messages in android. Its main purposes include:1) send a message as planned or execute a Runnanble (using the POST method ); 2) put messages sent from other threads into the message queue to avoid thread conflicts (often used in updating UI threads) By default, Handl

This article illustrates the drawable usage of graphic image processing in Android. Share to everyone for your reference. Specifically as follows: How to get the resources in res Data Packet Package:android.content.res Main Category: Resources Its main interface is divided into the following three parts according to function: Getxxxx () For example: int ge

have enough knowledge, know which objects are alive, And the reasons for their survival, and then combined with the data of mat to carry out specific analysis, it is possible to put some deep hidden problems to find out the cause.So today is also introduced a lot of content, the explanation of this article to here, because the Spring Festival is about to come, this is the last article this year, here first to worship an early, I wish everyone happy S

In the Android system, when we click the menu button, the menu option of menu will pop up, one of which is the setting option, after clicking the setting option, the system setting activity interface is displayed. How are these settings implemented? The Android system uses preferenceactivity to configure and manage system information. How does it save

Expandablelistview Introduction Introduction of Expandablelistview Expandablelistview can display a view to scroll vertically to show entries in the level two list, which is different from the list view (ListView). Expandablelistview allows two levels: Level list has two levels list.For example, in the mobile phone settings, for classification, has a very good effect. Mobile phone version of the QQ is also the effect. the whole idea of using Expa

From Beta to RC, as Windows 7 leaks faster and faster, this new generation of operating systems is getting closer to us. A handful of innovative testers have already used Windows 7, which has not yet been officially released, as the primary operating system for day-to-day applications, and for most ordinary users who still use Windows XP or Windows Vista (especially business users who focus on efficiency and benefits), how to put existing applications, important The smooth migration of

remotely enters the log by using the setprop command$ adb shell stop$ adb shell SetProp Log.redirect-stdio true$ adb shell startsystem until you turn off the simulator/device before the settings are retained, you can use the default settings on the emulator/device by adding /data/local.prop v. List of LOGCAT commands: Option Description

AIDL/IPC Android AIDL/IPC process communication mechanism-detailed explanation and usage case analysis (player) First, let's look at AIDL. What is AIDL? IPC? ------ Designing a Remote Interface Using AIDL Generally, we use Binder and BroadCastReciver in the same process to allow the Service to communicate with the Activity, data interaction, and

can be divided into the following five ways: 1.SharedPreferences Sharing Preferences2.Internal Storage internal storage space3.External Storage External storage space4.SQLite Database Databases5.Internet NetworkEach of these methods have their own advantages and disadvantages, according to different actual conditions to choose, and can not give a unified standard. Here are a few ways to talk about their pros and cons and the most appropriate usage: