virtual compass for android

Since I started to use Android and Java, I have had many "amazing" contact with jvm and its gc mechanism. Many jvm gc implementations have different strategies. I personally know that, even the implementations of various Android mobile phone manufacturers (of course, strictly speaking, Android is not a JVM) are even different. What you encounter is really tearful

Principles and memory allocation of Java Virtual Machine for Android development Author: Android Development Network original time: To develop efficient and stable Android applications, we have to understand the principles of Java virtual machines and the memory allocation

Google and Samsung unveiled the Galaxy Nexus on October 19, and the Android 4.0 (Ice Cream Sandwich), which is the benchmark mobile phone, is also unveiled at the press conference as a new generation of mobile and tablet-ready operating systems, Experience is also a big boost, today brings you the Android 4.0 virtual machine Installation tutorial, inviting you to

To hide the virtual keys under Android, you can do this by[CPP]View PlainCopy ADB root ADB remount ADB shell ls-al/system/build.prop (view file permissions) -rw-r--r--root root 4237 2015-11-19 04:34 build.prop ADB shell Pull/system/build.prop./(Take the file out and modify it) Gedit Build.prop Qemu.hw.mainkeys=1 //Plus this definition, equivalent to turning off the

--Genymotion is a complete set of tools that provides an Android virtual environment. It's a boon for developers, testers, marketers, and even gamers.I can only say very useful, simulator in the top, the specific benefits can degree Niang.-First you need a genymotion account, please register yourself: www.genymotion.com--genymotion installation package: Link: http://pan.baidu.com/s/1jIM2f58 Password: 4ic4Al

Google's official documents are:Https://developer.android.com/training/system-ui/navigation.html#behindSample code1 View decorview = GetWindow (). Getdecorview (); 2//Hide both the navigation bar and the status Bar.3//system_ui_flag_ful Lscreen is only available on Android 4.1 and higher, but AS4//a general rule, you should design your app to hide the STA Tus bar whenever you5//hide the navigation bar.6 int uioptions = view.system_ui_flag_hide_navigat

Hide bottom Virtual key navigation bar realizes full screen in two casesThe first type: Always hidden, not appearing when touching the screenWorkaround: set the following two parameters simultaneouslyView.system_ui_flag_hide_navigationView.system_ui_flag_immersiveAdd the following code in the OnCreate method of the activity that needs to hide the virtual key navigation bar:Window _window;/*** Hide pad Botto

running out of memory and does not cause memory overflow. And when memory resources are plentiful, these cached data can exist for quite a long time.Four, virtual reference A virtual reference is the weakest of all reference types. An object that holds a virtual reference is almost the same as no reference, and can be reclaimed by the garbage collector

In the development of Android, encountered a series of large and small problems, one of which is to block the bottom of the entity keys, I find a lot of blog also tried many ways, but always can not block home key, later saw a blog said after Android 4.0, the screen bottom home button must be anti-compilation , modify the Android bottom native code, so I gave up.

1. As we all know, Android is Linux at the bottom. Our operation of system.img here is also done under Linux. If you are using Windows, you can use a VMware virtual machine to install the Linux operating system. I'm using Ubuntu.2, we can be in the/boot directory (or another directory, the following file name can also be modified) to create a new 3 folders:New/boot/work: The main work spaceNew/boot/system:

When using the Android simulator, found that the AVD you created did not appear on the side of the keyboard, after searching the internet, found that many people have this problem, there are also articles that directly use the keyboard on the PC, because there are corresponding shortcut keys. However, no keyboard, always uncomfortable!Keys for PC keyboards in Android vi