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Preface At present, although React Native updates faster, and various components provide a very comprehensive, but in some cases, hybrid development will quickly shorten the development cycle, the reason is that the "foundation" of the original platform is undoubtedly deeper, with many and rich types of third-party support libraries. ...

I. Causes of Memory Leakage 1 Singleton Reference context The context of each activity is the same as that of the activity. When the activity is released or killed, its context will be released. However, the singleton in the current activity still exists, resulting in the context still being referenced and can not be garbage collected, lead ...

Android PackageInfo application information 1. Brief introduction 1. Officially interpreted as Overall information about the contents of a package. This corresponds to all of the information collected from AndroidManifest.xml. Get all package information for the application, including information from the manifest file Android ...

Android Event Processing Mechanism If you want to process messages in Android, such as a classic application scenario: Update the UI after receiving a network response, just add a Handler member to the thread that responds to the event, as follows public class MainActivity extends Activity { Handler messageHandler = new MyMessageHandler(); ...

What are the ways to implement the search function? android search box function is very common, there are many ways to achieve the search box, there are three common: - SearchView - autocompletetextview - EditText - Customization EditText+listview+database This article mainly describes the following ways, not recommended to use sp ...

This chapter gives a brief description of Drawable resources. What you need to know is the various types of Drawable resources and their usage scenarios. Common types are Bitmap File, Nine Patch Drawable, StateList Drawable, Gradient Drawable. Drawable resources refer to graphics that can be drawn on the screen and retrieved or applied to ...

Introduction to debuggerd Android The system comes with a practical program to diagnose abnormal exit daemon Debuggerd. This process can detect program crash and output process status information when crash to file and serial port for developers to analyze and debug. Debuggerd's data is stored in the / data/tombstone / directory and can hol ...

FLAG_ACTIVITY_NEW_TASK Label Configuration form: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.open.android.task5"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@str ...

Meta Basic Knowledge: H5 page window automatically adjusts to device width and prohibits users from scaling pages // I. HTML Page Structure <meta name="viewport" content="width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no" /> // Width sets the viewport width to a positive integer ...

For reprinting, please indicate the source:http://blog.csdn.net/lmj623565791/article/details/46858663；  This article is from: [Zhang Hongyang's Blog] 1. Overview In a custom ViewGroup, many effects include a user's finger dragging a View(eg: side-sliding menu, etc.) inside it. Writing onInterceptTouchEvent and onTouchEvent for spec ...