Android

Understanding the source code and thinking of Zhixin Volley. Compared with the new network request framework Volley, is it really useless? You must know that Volley was officially launched by google. Although it has been launched for a long time, it

Android video, android This topic describes how to obtain data from a video at a certain time point. You can call the following method. Note that the parameter unit for obtaining an image is microsecond, not millisecond.If the frame is incorrect,

Android componentized Development (Note) and android Components 1. Merge Manifest When compiling a project in Android studio, no matter how many modules you use, all Manifest will be merged into one. Note that the values referenced by these

Using SQLite to create a database on android, sqliteandroidUse SQLite to create a database on android  Method: 1. Create a database class that inherits the SQLiteOpenHelper class Rewrite related functions and initialize database objects. Public

Copying images in android, Configuration in activity_main.xml   Code in MainActivity: Public class MainActivity extends Activity {private ImageView ivOne; private ImageView ivTwo; @ Override protected void onCreate (Bundle savedInstanceState)

AndroidStudio2.2.x and later use cMake to compile and call the underlying c to generate a dependency library, Recently, we used the latest ndk compilation method cMake of AndroidStudio to compile the underlying cpp file. Since we have never touched

Android studio's simplest package name modification method: androidstudio package name Select the Project, right-click the Project, and deselect Compact Empty Moiddle Packages.                 Enter new name Click Preview enter new name

Linear layout: LinearLayout and linear linearlayoutLinear layout LinearLayout I. Introduction LinearLayout is a linear layout. The components in the LinearLayout layout container are arranged one by one: you can not only control the horizontal

Frame layout: FrameLayoutFrame layout FrameLayout I. Introduction     Ii. code example Result chart:   Code: Code worth attention: imageView_play.setVisibility(View.INVISIBLE);   Framelayoutfry2.MainActivity 1 package framelayoutfry2; 2 3 4 5

Request Code and result codeRequest Code and result code 1. Introduction Request Code: For example, if the request page has multiple buttons, you can find the button in the request according to the request code. Result code: Multiple requests can

Serialization, serialization, and deserializationSerialization I. Differences between serializable and parcelable Serializable is the serialization in java, and parcelable is the serialization in android. Serializable serialized files are stored

Android learning-use of the control ListView, androidlistview I. Simple usage of ListView First, create a ListViewTest project and let Android Studio automatically create the activity. Then modify the code in activity_main.xml as follows: 1 2 5 6

How to get the view Size and view Size   Many beginners will make a mistake, that is, to get the view Size in onCreate or onStart. However, in this way, the obtained wide Qualcomm is usually 0. Why? Because the measurement process of the view is not

Android PopupWindow usage summary, androidpopupwindow I used PopupWindow a few days ago. I couldn't remember how to use it. I checked it online, wrote a demo, and recorded the usage of PopupWindow here.Use Cases PopupWindow, as its name implies, is

Custom EditText cursor and edittext Custom EditText cursor Set background android: background = "@ null" Set the cursor style: android: textCursorDrawable = "@ drawable/edit_cursor_line" Remove or set the dot style under

Talking about Kotlin (4): control flow, talking about kotlin Control Flow Kotlin (1): Introduction and configuration in Android Studio Kotlin (2): basic types, basic syntax, and code style Talking about Kotlin (3): Class Kotlin (4): control

Android mistakes (2) and android mistakes Check whether or not minSdkVersion is the same as the package on which you are dependent. It also has a prompt that the local 11 is displayed and the dependent package is 15. Then change it to 15 and

EventBus is easy to use.What is EventBus contributed by the greenrobot organization (the organization also contributed greenDAO), an Android event release/subscription Lightweight Framework, function: simplify Android event transmission by

Use SimpleAdapter in Android-custom list, custom simpleadapter I am a beginner in Android. Today I have found the Adapter interesting. I wrote a custom list for testing.   First, create a layout file. You can set the layout by yourself. Paste my

If you want to know Kotlin, it's enough to read this. If you want Kotlin, In this book, I will use Kotlin as the main language to develop an android Application. The method is to develop an application to learn the language, rather than learning it