Programmer Group

Maybe tomorrow.jpeg Usually, if we want to use RxJava, the first thing we think about is using Observable. If we want to consider the situation of Backpress, we will use Flowable in the RxJava 2. x era. In addition to Observable and Flowable, there are three types of Observables in RxJava 2.x: Single, Completable, and Maybe. type describe ...

The so-called "pit entry" is just an excuse for one's lack of proficiency.Now I have been studying OSG for three weeks. I just do some simple demo s with books and videos. Sometimes I feel like I can't get started.I don't know if I am a career change. Before I studied point cloud data processing, I had a little opengl foundation. Alth ...

Recently, I want to get a dual navigation function. After checking a lot of information, I finally realized the function. Here I can even take a few notes for myself. Let's see the effect first. So it's starting to come true! The bottom navigation bar I chose to use FragmentTabHost+Fragment to achieve, which I think is very usefu ...

When using textures, there is a question why these methods can create textures and use them. Here we will discuss. Let's take a look at the general steps for using two-dimensional textures: // Generate texture int[] textureHandle = new int[1]; GLES20.glGenTextures(1, textureHandle, 0); int TextureID = textureHandle[0]; GLES20.glBindTexture( ...

Generation of call chain For example, fragment inherits RxFragment from RxLifecycle and then initiates network requests in fragment // observable generated by Retrofit Retrofit.create(xxx).subscribeOn(Schedulers.io()) .unsubscribeOn(Schedulers.io()) .observeOn(AndroidSchedulers.mainThread()) ...

In Android, a neutron thread cannot update the ui. So we need to dynamically change ui views in other ways. 1,runOnUiThread activity provides a lightweight way to update the ui, using getActivity.runOnUiThread to open threads when Fragment needs to be used This method is the simplest, easy to update some notifications that need not be judged, s ...

The last chapter talks about the simple use of CollapsingToolbarLayout + Toolbar. Remember that it is simple, complex and needs to be customized. If you can't, use simple. Note: Use CollapsingToolbarLayout only if you want to use the same effect as the previous chapter, and no other effect is necessary. 4,CoordinatorLayout+ AppBarLayout Why sho ...

Introduction to ArrayList: The java.util.ArrayList is one of our most commonly used classes. At the bottom of the ArrayList is a dynamic array that readers can understand as an implementation of the array public class ArrayList<E> extends AbstractList<E> implements List<E>, RandomAccess, Clon ...

I. overview The last article has explained Fragment's life cycle, basic usage methods and the role of some api s. But if you want to use Fragment well in your project, you must be able to clearly manage its status. Here are some scenarios that you will encounter in actual development. 2. Fragment Back Stack Management Activity is managed ...

    Updated 17 December 2018: Fix page misalignment when pop jump is executed in qq browser The code in this article has been encapsulated as npm package publishing: react-slide-animation-router   In React Router, if we want to do left-right sliding based on routing, we must first understand what happens when a route jump ...