android pixel 2

); Android: stretchcolumns ="1, 2, 3, 4"It means to automatically stretch columns 1, 2, 3, and 4. Framelayout frame layout. The controls in it are all displayed on the previous control according to one of the following controls. For example: "Wrap_content" Android: layout_height ="Wrap_content"

language other than French, Android will load the title from the res/values/strings. xml file. 2. if the device is set to a French language environment, Android will load the title from the res/Values-fr/strings. xml file. Note that if the device is in a Japanese environment, Android first starts from Res/vaues-Ja/str

Intent Object Parsing Intent can be divided into two groups: 1. Use the component name to clearly point the intent object to the target component (specify the target component name in the component name segment of the intent object ). Generally, developers of other applications do not know the name of the target component. Therefore, an intent object with a clear name is usually used for internal messages of the application, for example, an activity starts a subordinate service or a sister activ

use the value.The way I use it will affect the global settings of Android ... It's not necessarily what you want, OH. If you only want to modify the screen brightness of the current app, there's another way: Set the properties of the Window for the Activity. The corresponding Java code is as follows: Windowmanager.layoutparams LP = Window.getattributes (); lp.screenbrightness = brightness; Window.setattributes (LP);If you want to imple

Sencha Study Notes 2: package your first Sencha Android app apk installation package, senchaapk We have a preliminary impression on sencha through the introduction in the previous translation official Article. At the same time, we also generated the first sample application code framework through this wizard, many people may think that the next step should be based on the detailed information prompted by th

In the previous chapter, we did not remove the title bar and status bar. If the title bar and status bar are not displayed in the game, it is very easy to remove them, add the following two sentences to the onCreate method of mainActivity:RequestWindowFeature (Window. FEATURE_NO_TITLE); // set no titleGetWindow (). setFlags (WindowManager. LayoutParams. FLAG_FULLSCREEN, WindowManager. LayoutParams. FLAG_FULLSCREEN); // set full screenHurry up and try it. To write a program, you just need to try

There are four data storage methods for Android: 1. Shared preferences It is mainly used to store data in key-value pairs. It is a lightweight storage mechanism and can only store basic data types. 2. Files Fileinputstream and fileoutputstream are used to operate files. Because files in Android are an applicationProgramPrivate, so other applications canno

Resources in Android refer to non-code parts, such as clips, audios, videos, and characters. Generally, we store native files in assets. For example, MP3 files cannot be directly accessed by Android programs. They must be read as binary streams through the AssetManager class. Layout files are generally stored in the res folder, such as anim, drawable, layout, values, xml, raw, and menu. These resources can

MainActivity is as follows: Package cc. y; import android. app. activity; import android. content. context; import android. graphics. bitmap; import android. graphics. bitmap. config; import android. OS. bundle; import android. ut

Android UI operations are not thread-safe, and only the main thread can operate the UI. At the same time, the main thread has a certain time limit on UI operations (up to 5 seconds ). To perform some time-consuming operations (such as downloading and opening large files), Android provides some column mechanisms. The articles in the "android basics 02-thread secur

specified by Activity NDEF_DISCOVERED, TECH_DISCOVERED, and TAG_DISCOVERED is very important. When an Android device detects an NFC Tag approaching, the Intent containing NFC messages will be sent to the corresponding Activity according to the Order stated by the Action. 2. Android NFC message sending mechanism When an Andro