Android

The nightingale rose diagram is amazing in conventional charts, but I didn't understand it at the beginning. It turns out that nightingale is so great and really worthy of respect. After carefully studying the structure of the image, we found that

The standard valid and touchable UI elements specified by Android4.0 are 48dp, which is converted to a physical size of about 9mm. The recommended target size is 7 ~ 10mm, which is consistent with the iPhone, is an area where the user's fingers are

This article is based on Android 4.4. For more information, see "4.2". The mechanism is the same. The details may vary. Here we mainly use 4.4. Android headset plugging can be implemented through two mechanisms: 1. InputEvent 2. UEvent UEvent is the

We all know that using Android sdk manager to download and install the sdk is very slow, generally within 10 kbit/s, in this article, we recommend a method to quickly install the sdk by downloading the sdk zip package using download tools such as

MainActivity is as follows: Package cc. test; import android. app. activity; import android. content. context; import android. OS. bundle; import android. view. view; import android. view. view. onClickListener; import android. widget. button;

Android provides an asynchronous callback mechanism Handler, which enables you to send notifications after a long task is completed. Handler basic usage: In the main thread, it is very easy to use handler. A new Handler object implements its

This section describes the layout manager derived from ViewGroup. The following shows the class diagram of the android layout manager: The graphic user interface of android applications has good platform independence, that is, the layout manager is

I have drawn a report above, and I have a report. Of course I want to draw a pie chart, a bar chart, and so on. After reading the API, I think it should be very simple. The pie chart is implemented, The implementation code is indeed very simple, and

The three-day holiday is coming to an end soon. It is rare to have a long nap in the afternoon, so the evening is better!I flipped through some new features of C ++ 11 and found that the random number has a new usage method and is more useful.I have

The simplest thing to do is to modify the hosts file. There are also many versions of the hosts uploaded over the Internet. I have tested many versions and I have tried one of them, however, you need to add many domain name and IP resolution

1. JNI OverviewJNI is the abbreviation of Java Native Interface. It is translated into "Java local call" in Chinese, and JNI is a local programming Interface. It enables the Java code running inside the Java Virtual Machine (VM) to interoperate with

Android memory optimization is a very important issue, and UI optimization is a top priority. This label plays an important role in optimizing the UI structure. It aims to optimize the entire UI Layout structure by deleting redundant or additional

Android multithreading is actually java multithreading. The android UI thread is also called the main thread. First, Thread and Runnable: A Thread is a Thread, and Runnable can be understood as a task. This task is just an interface. The specific

Sometimes the mobile phone is hot and consumes a lot of energy. You need to check the power consumption of the mobile phone and find out which application or backend service consumes power and resources. You can perform the following operations to

GitHub https://github.com/nostra13/Android-Universal-Image-Loader.Let's take a look at the usage of the Android-Universal-Image-Loader framework; 1. initialize ImageLoaderConfiguration (global, initialize configuration throughout the application,

Before cocos2dx 3.0, we always used CCLabelTTF, CCLabelBMFont, and CCLabelAtlas to create text labels,But! After version 3.0 is released...Do you feel trembling again when you see this? Don't be afraid. What I want to say is:After version 3.0 is

 I. What is serialization and deserialization? (1) serialization of GLOSSARY objects: the process of converting Java objects into byte sequences and storing them to a storage medium. Object deserialization: the process of restoring the byte sequence

I. Statement: Public class AlarmManager extends Object Ii. Category structure: Java. lang. Object ? Android. app. AlarmManager Iii. Overview:This class provides a method that is close to the system alarm service, allowing

Android provides a small tool named meminfo to help the application analyze its memory usage. In addition, the memtrack HAL module is added in 4.4. The SoC vendor implements the memtrack module, let meminfo Get Some GPU-related memory allocation

    This week, I continued my Blog. The previous Blog briefly introduced the basic knowledge required to read the source code of Android FW, mainly related to C ++. From this blog post, we will learn and summarize the content of the SurfaceFlinger