简单记事本app3

——登录之后——

activity_function.xml     List View实现滚动浏览，不过这一部分还没做完，目前浏览操作还没有连接上数据库

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:orientation="vertical"
      android:padding="5dp"
      android:background="@color/yellow"
      tools:context=".MainActivity">
<LinearLayout
        android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">
<TextView
            android:layout_width="0dp"
               android:layout_height="wrap_content"
               android:layout_weight="4"
               android:text="OvO"
               android:textColor="@color/orange"
               android:textSize="30sp"/>
<Button
            android:id="@+id/add_note_btn"
               android:layout_width="0dp"
               android:layout_height="wrap_content"
               android:layout_weight="1"
               android:text="+"
               android:textSize="30sp"
               android:textColor="@color/orange"
               android:background="@drawable/bg_frame"
               android:layout_marginRight="10dp"
               android:layout_marginTop="3dp"
               />
</LinearLayout>
<ListView
        android:id="@+id/lv_note"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:padding="3dp"
            android:scrollbars="none"
            />
</LinearLayout>

FunctionActivity.java

package com.example.text002;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

import db.NoteAdapter;
import db.NoteBean;

public class FunctionActivity extends AppCompatActivity implements View.OnClickListener {

   private Button add_note_btn;
   private List<NoteBean> notes;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_function);
      initaddnote();
      initView();
   }

   private void initaddnote() {
      add_note_btn = findViewById(R.id.add_note_btn);
      add_note_btn.setOnClickListener(FunctionActivity.this);
   }

   private void initView() {
      ListView listView = findViewById(R.id.lv_note);
      initData();
      //适配器，让数据和listView结合起来，起到桥梁的作用
      NoteAdapter noteAdapter = new NoteAdapter(FunctionActivity.this,notes);
      listView.setAdapter(noteAdapter);
   }

   private void initData() {
      notes = new ArrayList<>();
      NoteBean note = new NoteBean(" ", "学习", "学习打卡", "2023/3/18");
      notes.add(note);
      NoteBean note1 = new NoteBean(" ", "学习", "学习打卡", "2023/3/18");
      notes.add(note1);
      NoteBean note2 = new NoteBean(" ", "学习", "学习打卡", "2023/3/18");
      notes.add(note2);
      NoteBean note3 = new NoteBean(" ", "学习", "学习打卡", "2023/3/18");
      notes.add(note3);
      NoteBean note4 = new NoteBean(" ", "学习", "学习打卡", "2023/3/18");
      notes.add(note4);
      NoteBean note5 = new NoteBean(" ", "学习", "学习打卡", "2023/3/18");
      notes.add(note5);
   }

   @Override
   public void onClick(View view) {
      int vid = view.getId();
      switch (vid){
         case R.id.add_note_btn:
            //添加新的note
//                Toast.makeText(this,"HELLO~",Toast.LENGTH_SHORT).show();
            Intent intent = new Intent(FunctionActivity.this,NoteAddActivity.class);
            startActivity(intent);
            break;
      }
   }
}

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