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Basic framework The following codes are in activity_main.xml. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <TextView android:layout_width="200dp" android:layout_heig ...

In addition to the two main network technologies of HTTP communication and Socket communication, WebView, a technology for loading and displaying web pages, is also provided in Android. This allows us to deal with some special needs, such as displaying web pages in applications like wechat, or using WebView to layout UI interfaces. Basic use o ...

When developing an application, the basic functions are the same. When packaging, distinguish channels, configure different package names and signatures. 1. Create a new project Simply create a default Hello World project. 2. Create a new folder for the corresponding channel Create a new folder qudao1 in the src directory, and then generate ...

Personal notes sorting Activity activity Activity basic usage Registration activities Need to be in androidmanifest Register the activity in the application node in XML <activity android:name=".FirstActivity"/> If primary Activity <activity android:name=".FirstActivity" android:label="This is FirstActivity"> <int ...

According to the old rule, the picture above first to see if it is what you want. Meituan effect: Final effect: A graphic analysis Next, I want to write a simple example. First analyze the layout, as shown in the figure below. The outermost layer is NestedScrollView, and then nest a LinearLayout header, a TabLayout selector in the middle a ...

First put a complete multi-channel / multi environment packaged configuration, and then explain it. Achieved: Different environments and package names;Modify different strings in different environments XML resource file;Modify the specified constant in different environments;For different environments, modify androidmanifest Channel varia ...

androud studio 3.5.2 Example file: Weathervolleyjson Not to mention here about json data acquisition and analysis, but read my previous articles with interest. Not to mention the benefits of font icons, there are a lot of them on the Internet. The app I made can already get and analyze the wind and weather, but the weather has been without i ...

Persistence technology Data persistence refers to saving those instantaneous data in memory to the storage device to ensure that these data will not be lost even when the mobile phone or computer is turned off. The data stored in memory is in transient state, while the data stored in storage device is in persistent state. Persistence techn ...

What are the fragments Fragment is a UI fragment that can be embedded in activities, which can make the program more reasonable and make full use of the space of the large screen. Therefore, it is widely used in tablets. Use of fragments Simple use of fragments Left layout_ fragment. xml <LinearLayout xmlns:android="http://schemas.andro ...

1, Basic concepts The so-called monkey test (Money Test), also known as funny test and strange use test, refers to that in software testing, testers can carry out various strange operation modes to test the stability of software. Monkey test, generally speaking, is a test method for the robustness of the system to the input of signal facto ...