摘要:
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android. 阅读全文
摘要:
MainActivity package com.example.myapplication; import androidx.appcompat.app.AppCompatActivity; import android.annotation.SuppressLint;import android 阅读全文