how to open engineer mode in android

The Android startup mode is divided into four types: Standard mode startup mode, activity is created each time the activity is activated and placed in the task stack. Singletop If there is an instance of the activity at the top of the task, reusing the instance will create a new instance and

Android Activity startup modeIn Android development, the activation mode of activity has the following four kinds Standard Singletask SingleInstance Singletop StandardStandard boot mode, default, each time you open t

When it comes to Android's startup mode, people who know Android must understand it. By setting the startup mode we can not only save memory usage, but also achieve a better experience, such as we open an application, click the Home button back to the main interface when the program is not killed, when the click on the

The use of Slidingmenu has been described in the previous section: Android Open source project Slidingmenu's learning Notes (a), then further study, according to the menu of the slide show to switch to the corresponding pageDirectory structure:Click Bluetooth to switch to the appropriate interfaceKey codeMainactivity.javaPackage Com.dzt.slidingmenudemo;import Android.app.fragment;import Android.app.fragment

Personal feeling NetEase's client is more avant-garde, there are a lot of fresh things, sometimes imitate these good client can learn a lot of thingsStart today's main topic, the following is the effect of NetEase client drawer mode implementationIn fact, there is a drawerlayout this layout, you have to solve the problem more than half, drawerlayout layout itself provides the function of left and right strokeFirst on the code, then slowly answer, afte

When using camera for android, you may encounter two problems: orientation during camera preview, and orientation 90 degrees after takePicture. First, solve the orientation problem of the first preview. First, in android2.2 and later sdk versions, the orientation of camera uses landscape. If the screenOrientation of your activity is set to landscape, this problem does not occur. Second, if your activity must use portrait, you can call camera. call the

(savedinstancestate); Setcontentview (r.layout.activity_image); InitView (); String url = "Https://www.baidu.com/img/bdlogo.png";//width and height specify 0 and 0 to load imagerequest request = new Imagerequest (URL, New Listener(2). Cache network images using Imageloader and ImagelistenerTo create the Bitmapcache class:public class Bitmapcache implements Imagecache {public lrucacheTo invoke the test:private void Testimageloader (String url) {Imageloader loader = new Imageloader (Myapplication

Android open-source framework Universal-Image-Loader learning none -- WeakMemoryCache and FuzzyKeyMemoryCache /** * Memory cache with {@linkplain WeakReference weak references} to {@linkplain android.graphics.Bitmap bitmaps} * * NOTE: This cache uses only weak references for stored Bitmaps. * * @author Sergey Tarasevich (nostra13[at]gmail[dot]com) * @since 1.5.3 */public class WeakMemoryCache extends Ba

1, in the mobile phone we click "Settings" and then in the system will not see [developer options] This option in the previous version of this feature, but in the Android4.2.2 is to hide the item Oh, then how to find out. If we want to show [developer Options] just keep clicking continuously in the system [about Mobile] 2, like here I click 4 consecutive [version number] This item, on the line (different phone clicks are not the same OH) 3, click will be prompted to

Android Real device debugging, something can not use USB debugging, or with USB debugging too troublesome, then need to use wireless debugging this way.Unlimited debugging sub-root and non-root two, the market's wireless ADB debugging app, basic needs root permissions, which makes no root device can not use wireless debugging, and then need to use non-root infinite debugging method, nonsense said, the following describes the specific way.Preparatory w

Problem: some software such as optimization master, Kingsoft battery doctor and other shortcut switch can not open off airplan (http://stackoverflow.com/questions/15861046/how-to-toggle-airplane-mode-on-android-4-2-using-root) Answer: some settings. system defined in the device settings to read-only. Some previously moved to settings. Global in settings. System,

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

The previous time travel to solve a problem, is to get access points, as well as login mode. The problem with the mobile network differential setting in this process is to use the Ntrip protocol. This is a bit of a pit, is the server side is not according to the Protocol to the standard processing of these validation data. The first is a socket connection, the socket connection on the Send protocol. This agreement is ntrip to do.Ntrip Agreement: Click

The Android phone will have a return key, whether it's an entity key or a virtual key. Android users are mainly using this return key to manipulate the page return mode, no more than iOS forcing the very high only one operation key. This is the most common way to return, there is also a more common, that is, the internal response of the page itself. The vast majo

1. What is HttpClient?The HTTP protocol is probably the most widely used and most important protocol on the Internet now, and more and more Java applications need to access network resources directly through the HTTP protocol. while the basic functionality of accessing the HTTP protocol has been provided in the Java NET Package of the JDK, theJDK library itself provides a lack of functionality and flexibility for most applications.HttpClient is a sub-project under Apache Jakarta Common to provid

1. An application is typically composed of multiple activity.2. The task stack (the alias back stack) records the activity that the user has opened.3. When an application is turned on the system assigns him a task stack, and when all activity exits, the task stack is emptied.4. The ID of the task stack is an integer data type that is self-growing.5. In the Android operating system there will be multiple task stacks, one application a task stack.6. The

The Nineth chapter of activity loading mode Task: Similar to a stack, each time the interface is opened, a task is created and then the Open interface is placed into the task.(1) Standard: default modeEach time a new interface is created to add the interface to the task(2) Singletop: Stack Top Single instance modeA. If the target activity does not exist, create a new activity and deposit into the taskB.

This program only for Linux terminal under the brush mobile phone img the file situation:FastBoot the usual flow is as follows: 1CDout/target/product/xxx///Enter the directory of the. img File2ADB reboot bootloader//Enter bootloader mode3FastBoot devices//detect if the phone enters FastBoot mode4FastBoot FlashBootBoot. img5FastBoot Flash System system.img6FastBoot reboot when the second step is completed, it is often impossible to enter FastBoot mode,

The Android underlying layer provides excellent control capabilities for both software and hardware systems, and the interface definition is very clear. We can easily implement the desired control, as a result, a quick setup function is available in the project recently, which requires one-click wifi shutdown, mobile network shutdown, battery setting, and flight mode, one-click Application Opening (the appl