家庭记账本day2

完成记账本的启动界面

LauncherActivity文件:

 1 package com.example.application_keep;
 2 
 3 import androidx.appcompat.app.AppCompatActivity;
 4 
 5 import android.app.Activity;
 6 import android.content.Intent;
 7 import android.os.Bundle;
 8 import android.os.Handler;
 9 
10 public class LauncherActivity extends Activity {
11 
12     @Override
13     protected void onCreate(Bundle savedInstanceState) {
14         super.onCreate(savedInstanceState);
15         setContentView(R.layout.activity_launcher);
16         new Handler().postDelayed(new Runnable() {
17             @Override
18             public void run() {
19                 //在主线程中执行
20                 startMainActivity();
21             }
22         },2000);
23     }
24     //启动主页面
25     private void startMainActivity(){
26         Intent intent=new Intent(this,MainActivity.class);
27         startActivity(intent);
28         //关闭当前页面
29         finish();
30     }
31 }

activity_launcher.xml文件:

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:app="http://schemas.android.com/apk/res-auto"
 4     xmlns:tools="http://schemas.android.com/tools"
 5     android:layout_width="match_parent"
 6     android:layout_height="match_parent"
 7     android:background="@android:color/white"
 8     tools:context=".LauncherActivity">
 9 
10     <ImageView
11         android:id="@+id/la_icon"
12         android:layout_width="wrap_content"
13         android:layout_height="wrap_content"
14         android:src="@drawable/ks"
15 
16         android:layout_centerInParent="true"
17         />
18 
19     <TextView
20         android:layout_width="wrap_content"
21         android:layout_height="wrap_content"
22         android:layout_below="@id/la_icon"
23         android:layout_marginTop="-48dp"
24         android:text="家庭记账本"
25         android:layout_centerHorizontal="true"
26         android:textColor="@android:color/black"
27         android:textSize="35sp" />
28 </RelativeLayout>

需要注意的是,要在AndroidManifest文件中将LauncherActivity设置为启动界面

 效果:

启动APP时,出现启动界面,3秒后关闭

原文地址:https://www.cnblogs.com/znjy/p/14905289.html