baidu_31863567的博客

思路：设置两个按钮，用于按钮点击事件的实现<RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent"> <Button android:id="@+id/one" android:layout_width="wrap_

效果图：1.main_activity.xmlxmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="ve

效果图：1.main_activity.xmlxmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation

效果图：弹出登录成功小框代码：Toast toast = Toast.makeText(this,"登陆成功",Toast.LENGTH_LONG);toast.show();

效果图：1.activity_main.xmlxmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="ve

做法：activity_two.xmlxmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical">

//创建数据库package com.liyulei.sqlite;import android.content.Context;import android.database.sqlite.SQLiteDatabase;import android.database.sqlite.SQLiteOpenHelper;public class MyOpenHelper extend

效果图：具体实施如下：1.layout中 activity_main.xmlxml version="1.0" encoding="utf-8"?>xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" androi