Programmer Group

android studio relies on offline configuration gradle settings 1. Switch the directory structure to project mode and open the gradle/wrapper/gradle-wrapper.properties file under the project directory 2. Set the gradle local dependency package location The original configuration distributionUrl of the project is the remote gradle address. Th ...

1, Lifecycle Lifecycle is a lifecycle aware component in Jetpack. It is used to store information about the lifecycle state of an Activity or Fragment, and allow other objects to observe this state. Lifecycle uses state and event enumerations to track the lifecycle state of its associated components. 2, Basic use   Using Lifecycle to o ...

USB interface Universal Serial Bus (USB) is not only a serial bus standard, but also a technical specification of input and output interfaces. It is widely used in information communication products such as personal computers and mobile devices, and extended to photography equipment, digital television (set-top box), game consoles and o ...

I learned BroadcastReceiver from my teacher today. Let's record it. Send standard broadcast (use static registration, that is, manually write the registration code in AndroidManifest.xml) Take a look at my project structure   The MainActivity code is as follows import android.content.ComponentName; import android.conten ...

1, Title: design an APP. 1. Design an APP. (1) There are two interfaces in the APP. (2) There are two buttons "login" and "broadcast" on the main activity. Click the "login" button to open a new activity. Click the "broadcast" button to send a broadcast message. (3) On the new activity interface, you can ...

Android development APP portal interface design (Assignment 1) 1. Content: please implement the APP portal interface framework design according to the course practice, including at least 4 tab pages, which can realize the click switching between tab pages; 2. Technology: use layouts and fragment s to click and listen to controls; 1, Key steps ...