android本地备忘录助手

/* *    该类为主界面，通过侧滑，划出侧滑菜单，里面有制作人的信息，添加，查找，删除功能。*    主界面为白色，每三个物品信息为一行的卡片式布局呈现给用户，通过点击图片查看具体信息*/
public class MainActivity extends AppCompatActivity {private DrawerLayout drawerLayout;private List<Goods> goodsList =new ArrayList<>();private goodsAdapter adapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Toolbar toolbar=(Toolbar)findViewById(R.id.toolbar);
//        setSupportActionBar(toolbar);drawerLayout=(DrawerLayout)findViewById(R.id.drawer_layout);NavigationView navigationView=(NavigationView)findViewById(view);initGoods();RecyclerView recyclerView=(RecyclerView) findViewById(R.id.recycler_view);GridLayoutManager layoutManager=new GridLayoutManager(this,3);recyclerView.setLayoutManager(layoutManager);adapter=new goodsAdapter(goodsList);recyclerView.setAdapter(adapter);ActionBar actionBar=getSupportActionBar();if (actionBar!=null){actionBar.setDisplayHomeAsUpEnabled(true);}navigationView.setCheckedItem(R.id.nav_add);    //默认选中navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener(){@Overridepublic boolean onNavigationItemSelected( MenuItem item) {    //侧滑菜单里的选项switch (item.getItemId()) {case R.id.nav_add:Intent intent1=new Intent(MainActivity.this,AddActivity.class);startActivity(intent1);break;case R.id.nav_search:Intent intent=new Intent(MainActivity.this,SearchActivity.class);startActivity(intent);break;case R.id.nav_delete:Intent intent2=new Intent(MainActivity.this,deleteActivity.class);startActivity(intent2);break;case R.id.nav_manage:Toast.makeText(MainActivity.this,"目前还没有更多功能",Toast.LENGTH_SHORT).show();break;default:break;}return true;}});}public boolean onCreateOptionsMenu(Menu menu){getMenuInflater().inflate(R.menu.view,menu);return true;}private void initGoods(){List<Goods> goods= DataSupport.findAll(Goods.class);      //读取全部数据for (int i=0;goods.size()>i;i++){                         //如果从数据库读取的数据小于总数据，则继续读取Goods good=new Goods("","","","",true,"");good.setName(goods.get(i).getName());good.setImageId(goods.get(i).getImageId());goodsList.add(good);}}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {switch (item.getItemId()){case R.id.refresh:initGoods();Toast.makeText(this,"刷新成功",Toast.LENGTH_SHORT).show();break;default:break;}return true;}

}

/**   该活动为登录界面，使用Litepal数据库存储，采用映射方法建表，用户账号密码存储在User1中*   记住密码功能采用的是键值对存储*   isremember为记住密码的逻辑判断**/
public class LoginActivity extends AppCompatActivity {private EditText user;private EditText password;private Button login;private Button register;private CheckBox remember;private SharedPreferences pref;private SharedPreferences.Editor editor;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_login);user=(EditText)findViewById(R.id.user);password=(EditText)findViewById(R.id.password);login=(Button)findViewById(R.id.denglu);register=(Button)findViewById(R.id.zhuce);remember=(CheckBox)findViewById(R.id.remember);LitePal.getDatabase();                                         //建表pref= PreferenceManager.getDefaultSharedPreferences(this);boolean isremember=pref.getBoolean("remember",false);     //键值对存储if (isremember){String user1=pref.getString("user","");String password1=pref.getString("password","");user.setText(user1);password.setText(password1);remember.setChecked(true);}login.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {String user1=user.getText().toString();String password1=password.getText().toString();List<User> users= DataSupport.where("user=?",user1).find(User.class);       //登录判断if(users.size()<1){AlertDialog.Builder dialog=new AlertDialog.Builder(LoginActivity.this);dialog.setMessage("此用户不存在");dialog.setCancelable(false);dialog.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {}});dialog.show();}else{                                                                   //成功登陆if(users.get(0).getPassword().equals(password1)){                    //得到数据库中第一个和user1相对应的密码和输入的密码进行比较editor=pref.edit();if (remember.isChecked()){editor.putBoolean("remember",true);editor.putString("user",user1);editor.putString("password",password1);}else {editor.clear();}editor.apply();Intent intent=new Intent(LoginActivity.this,MainActivity.class);startActivity(intent);}else {AlertDialog.Builder dialog=new AlertDialog.Builder(LoginActivity.this);dialog.setMessage("密码错误");dialog.setCancelable(false);dialog.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {}});dialog.show();}}}});register.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {Intent intent=new Intent(LoginActivity.this,RegisterActivity.class);startActivity(intent);finish();}});}
}

public class RegisterActivity extends AppCompatActivity {private EditText user;private EditText password;private EditText password1;private Button ok;private Button cancel;
/**     该表为注册界面，用于向数据库里添加数据以及判断是否有重复的数据，如果有则不添加新的数据*     users为数据库符合条件的数值，user0为添加数据时创建的对象，user1为输入的账号*     password0为输入的密码，password00为重复的密码，用于进一步确认*/@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_register);user=(EditText)findViewById(R.id.user);password=(EditText)findViewById(R.id.password);password1=(EditText)findViewById(R.id.password1);ok=(Button)findViewById(R.id.ok);cancel=(Button)findViewById(R.id.cancel);ok.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {String user1=user.getText().toString();String password0=password.getText().toString();String password00=password1.getText().toString();List<User> users= DataSupport.where("user=?",user1).find(User.class);       //注册判断if (users.size()>0){                                                         //判断用户名是否重复AlertDialog.Builder dialog=new AlertDialog.Builder(RegisterActivity.this);dialog.setMessage("此用户名已存在");dialog.setCancelable(false);dialog.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {}});dialog.show();}else  if (user1.equals("")){AlertDialog.Builder dialog=new AlertDialog.Builder(RegisterActivity.this);dialog.setMessage("账号不能为空");dialog.setCancelable(false);dialog.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {}});dialog.show();}else if (!user1.equals("")){if (password0.equals("")){AlertDialog.Builder dialog=new AlertDialog.Builder(RegisterActivity.this);dialog.setMessage("密码不能为空");dialog.setCancelable(false);dialog.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {}});dialog.show();}else if (password0.equals(password00)&&(!password0.equals(""))) {                                       //判断两次密码是否一次Toast.makeText(RegisterActivity.this,"注册成功",Toast.LENGTH_SHORT).show();User user0=new User();                                               //将账号密码存到数据库user0.setUser(user1);user0.setPassword(password0);user0.save();Intent intent=new Intent(RegisterActivity.this,LoginActivity.class);startActivity(intent);}else {AlertDialog.Builder dialog=new AlertDialog.Builder(RegisterActivity.this);dialog.setMessage("两次密码不一致");dialog.setCancelable(false);dialog.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {}});dialog.show();}}}});cancel.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {Intent intent=new Intent(RegisterActivity.this,LoginActivity.class);startActivity(intent);}});}
}

增删改查大同小异，就不一一贴了。下面这个是增加数据的活动。

/**    该类为物品信息添加类，包括物品名字，件数，存放地点，存放时间，图片，以及闹钟提醒*    通过调用系统相册来获取图片*/public class AddActivity extends AppCompatActivity {private EditText name;private EditText number;private EditText site;private EditText time;private ImageView imageId;private CheckBox remind;private Button ok;private Button cancel;private Button add;public  static final int CHOOSE_PHOTO=1;String image_path="";@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_add);name=(EditText)findViewById(R.id.name);number=(EditText)findViewById(R.id.number);site=(EditText)findViewById(R.id.site);time=(EditText)findViewById(R.id.time);remind=(CheckBox) findViewById(R.id.remind);imageId=(ImageView)findViewById(R.id.imageId);add=(Button)findViewById(R.id.add);ok=(Button)findViewById(R.id.ok1);cancel=(Button)findViewById(R.id.cancel1);add.setOnClickListener(new View.OnClickListener() {@Override               //检查是否有权限来打开相册public void onClick(View v) {if (ContextCompat.checkSelfPermission(AddActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE)!= PackageManager.PERMISSION_GRANTED){ActivityCompat.requestPermissions(AddActivity.this,new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},CHOOSE_PHOTO);}else {openAlbum();}}});ok.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {                 //将输入的数据添加到数据库final String name1=name.getText().toString();String number1=number.getText().toString();String site1=site.getText().toString();String time1=time.getText().toString();boolean remind1=false;if (remind.isChecked()){remind1=true;}else {remind1=false;}Goods goods=new Goods(name1,number1,site1,time1,remind1,image_path);goods.save();Toast.makeText(AddActivity.this,"添加成功",Toast.LENGTH_SHORT).show();Intent intent2=new Intent(AddActivity.this,MainActivity.class);startActivity(intent2);}});cancel.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {Intent intent=new Intent(AddActivity.this,MainActivity.class);startActivity(intent);}});}private void openAlbum(){                        //打开相册函数Intent intent=new Intent("android.intent.action.GET_CONTENT");intent.setType("image/*");startActivityForResult(intent,CHOOSE_PHOTO);}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {switch (requestCode){case CHOOSE_PHOTO:if (resultCode==RESULT_OK){handleImage(data);}break;default:break;}}@Override  //调取相册时再进行判断权限public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {switch (requestCode){case CHOOSE_PHOTO:if (grantResults.length>0&&grantResults[0]==PackageManager.PERMISSION_GRANTED){openAlbum();}else {Toast.makeText(this,"you denied the permission",Toast.LENGTH_SHORT).show();}break;default:break;}}private void handleImage(Intent data){     //传参过程 解析URiString imagePath=null;Uri uri=data.getData();if (DocumentsContract.isDocumentUri(this,uri)) {String docId = DocumentsContract.getDocumentId(uri);if ("com.android.providers.media.documents".equals(uri.getAuthority())) {String id = docId.split(":")[1];String selection = MediaStore.Images.Media._ID + "=" + id;imagePath = getImagePath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, selection);} else if ("com.example.providers.downloads.documents".equals(uri.getAuthority())) {Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(docId));imagePath = getImagePath(contentUri, null);}}else if ("content".equalsIgnoreCase(uri.getScheme())){imagePath=getImagePath(uri,null);}else if ("file".equalsIgnoreCase(uri.getScheme())){imagePath=uri.getPath();}displayImage(imagePath);image_path=imagePath;               //将得到的图片路径已字符串的形式保存下来}private String getImagePath(Uri uri, String selection){      //获得图片的路径String path=null;Cursor cursor=getContentResolver().query(uri,null,selection,null,null);if (cursor!=null){if (cursor.moveToFirst()){path=cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));}cursor.close();}return path;}private void displayImage(String imagePath){            //显示图片if (imagePath!=null){Bitmap bitmap= BitmapFactory.decodeFile(imagePath);imageId.setImageBitmap(bitmap);}else {Toast.makeText(this,"得到图像失败",Toast.LENGTH_SHORT).show();}}
}

这个和账号密码类差不多，就只贴这一个了。

import org.litepal.crud.DataSupport;
/** 该类为数据库User1中的Goods表对应的映射关系*      物品信息的物品类*/
public class Goods extends DataSupport {private String name;private String imageId;private String number;private String site;private String time;private boolean remind;public Goods(String name, String number,String site,String time,boolean remind,String imageId){this.name=name;this.number=number;this.site=site;this.time=time;this.remind=remind;this.imageId=imageId;}public String getName(){return name;}public void setName(String name){this.name=name;}public String getImageId(){return imageId;}public void setImageId(String imageId){this.imageId=imageId;}public String getNumber(){return number;}public void setNumber(String number){this.number=number;}public String getSite(){return site;}public void setSite(String site){this.site=site;}public String getTime(){return time;}public void setTime(String time){this.time=time;}public boolean getRemind( ){return remind;}public void setRemind(boolean remind){this.remind=remind;}}

/**    该类为物品的显示类，当点击主界面的图片时，会跳到这个界面，从而使某个物品的详细信息显示给用户*/
public class goodsActivity extends AppCompatActivity {public static final String GOODS_NAME="good_name";public static final String GOODS_IMAGE="good_image";@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_goods);Intent intent=getIntent();String goodname=intent.getStringExtra(GOODS_NAME);String goodImage=intent.getStringExtra(GOODS_IMAGE);Toolbar toolbar=(Toolbar)findViewById(R.id.toolbar);CollapsingToolbarLayout collapsingToolbarLayout=(CollapsingToolbarLayout)findViewById(R.id.collapsing_toolbar);ImageView imageView=(ImageView)findViewById(R.id.good_image_view);TextView textView=(TextView)findViewById(R.id.good_content_text);ActionBar actionBar=getSupportActionBar();actionBar.setDisplayHomeAsUpEnabled(true);collapsingToolbarLayout.setTitle(goodname);Glide.with(this).load(goodImage).into(imageView);String goodContent=generateFruitContent(goodname);textView.setText(goodContent);}private String generateFruitContent(String goodname){StringBuilder goodContent=new StringBuilder();List<Goods> goods= DataSupport.where("name=?",goodname).find(Goods.class);if (goods.size()>0){goodContent.append("存放件数:"+goods.get(0).getNumber()+"\n");goodContent.append("存放地点:"+goods.get(0).getSite()+"\n");goodContent.append("存放时间:"+goods.get(0).getTime()+"\n");boolean is=goods.get(0).getRemind();if(is){goodContent.append("是否提醒:"+"提醒"+"\n");}else {goodContent.append("是否提醒:"+"不提醒");}}return goodContent.toString();}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {switch (item.getItemId()){case android.R.id.home:finish();break;case R.id.alarm_button:Intent intent=new Intent(goodsActivity.this,Alarm1Activity.class);startActivity(intent);break;}return  super.onOptionsItemSelected(item);}public boolean onCreateOptionsMenu(Menu menu){getMenuInflater().inflate(R.menu.view1,menu);return true;}
}

/*
*   该类为适配器，使用卡片布局使他呈正方形显示给用户，以增加界面可观性，使上半部分为图片，最后一行为文字的形式显示*/
public class goodsAdapter extends RecyclerView.Adapter<goodsAdapter.ViewHolder>{private Context context;private List<Goods> goodList;static class ViewHolder extends RecyclerView.ViewHolder{CardView cardView;ImageView imageView;TextView textView;public ViewHolder(View view){super(view);cardView=(CardView)view;imageView=(ImageView)view.findViewById(R.id.good_image);textView=(TextView)view.findViewById(R.id.good_name);}}public goodsAdapter(List<Goods> goodList){this.goodList =goodList;}@Overridepublic ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {if (context==null){context=parent.getContext();}View view= LayoutInflater.from(context).inflate(R.layout.good_item,parent,false);final ViewHolder holder=new ViewHolder(view);holder.cardView.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {int position=holder.getAdapterPosition();Goods fruit= goodList.get(position);Intent intent=new Intent(context,goodsActivity.class);intent.putExtra(goodsActivity.GOODS_NAME,fruit.getName());intent.putExtra(goodsActivity.GOODS_IMAGE,fruit.getImageId());context.startActivity(intent);}});return holder;}
//适配器呈现结果@Overridepublic void onBindViewHolder(ViewHolder holder, int position) {Goods fruit= goodList.get(position);holder.textView.setText(fruit.getName());Glide.with(context).load(fruit.getImageId()).into(holder.imageView);}@Overridepublic int getItemCount() {return goodList.size();}

最后是关于litepal关系映射。

<?xml version="1.0" encoding="utf-8" ?><litepal><dbname value="User1" ></dbname><version value="4"></version><list>
<mapping class="com.example.administrator.zhushou.User"></mapping>
<mapping class="com.example.administrator.zhushou.Goods"></mapping></list>
</litepal>

关于XML的视图就不放下来了。

最后是部分截图：

android本地备忘录助手相关推荐

Android版xx助手之天天酷跑外挂详细分析
Android版xx助手之天天酷跑外挂详细分析图/文莫灰灰背景近些年来,移动互联网的大肆崛起,潜移默化中影响着人们的生活和工作习惯.当腾讯的微信平台接入手机游戏之后,移动端的游戏也开 ...
Android版xx助手之天天酷跑外挂具体分析
Android版xx助手之天天酷跑外挂具体分析图/文莫灰灰背景近些年来,移动互联网的大肆崛起,潜移默化中影响着人们的生活和工作习惯.当腾讯的微信平台接入手机游戏之后,移动端的游戏也開 ...
浅入浅出 Android 安全：第三章 Android 本地用户空间层安全
第三章 Android 本地用户空间层安全来源:Yury Zhauniarovich | Publications 译者:飞龙协议:CC BY-NC-SA 4.0 本地用户空间层在 Android ...
Android 从 Android 本地图库选择多个图片
原文地址本文说明如何从 Android 本地图库选择多个图片.作者考虑很多解决方案. 演示从 Android 本地图库选择多个图片,有两个方法可以实现从图库中选择多个图片: 用 Intent 获取多 ...
实现在Android本地视频播放器开发
在Android本地视频播放器开发中的搜索本地视频章节中,我们能够搜索本地视频并且显示每个视频的图片.标题.时间长度,当然如果需要添加其他的例如视频的长度和宽度可以使用Video类中的方法,既然我们获 ...
Android远程桌面助手(B1391)
ARDC(B1391), Download:https://files.cnblogs.com/files/we-hjb/ARDC%28B1391%29_EN.7z Android远程桌面助手(B13 ...
Android本地视频播放器开发--视频解码
在上一章Android本地视频播放器开发--SDL编译编译中编译出sdl的支持库,当时我们使用的2.0,但是有些api被更改了,所以在以下的使用者中我们使用SDL1.3的库,这个库我会传上源码以及编译 ...
CVE-2014-7911 Android本地提权漏洞分析与利用
概述前面我们了解了Android Binder机制的基本原理,当然仅仅了解是不够的,我们要做到:Know it and hack it.这篇文章我们就来分析一个和Binder相关的漏洞:CVE-20 ...
Android 本地tomcat服务器接收处理手机上传的数据之案例演示
上一篇:Android 本地tomcat服务器接收处理手机上传的数据之环境搭建本篇基于上一篇搭建的服务器端环境,具体介绍Android真机上传数据到tomcat服务器的交互过程场景:A ...

android本地备忘录助手

android本地备忘录助手相关推荐

最新文章

热门文章