Android实现记事本功能（26）

本文实例为大家分享了android实现记事本功能的具体代码，供大家参考，具体内容如下

mainactivity.java代码:

package siso.smartnotef.activity;

import android.app.alertdialog;
import android.content.dialoginterface;
import android.content.intent;
import android.os.bundle;
import android.support.v7.app.appcompatactivity;
import android.view.view;
import android.view.viewgroup;
import android.widget.listadapter;
import android.widget.listview;
import android.widget.textview;

import java.util.arraylist;
import java.util.list;

import siso.smartnotef.r;
import siso.smartnotef.adapter.notepadeadapter;
import siso.smartnotef.db.datahelper;
import siso.smartnotef.global.globalparams;
import siso.smartnotef.model.notepadbean;
import siso.smartnotef.model.notepadwithdatabean;
import siso.smartnotef.service.mainservice;

public class mainactivity extends appcompatactivity implements view.onclicklistener, notepadeadapter.clickfunction {

 private textview tv_add;
 private listview lv_contents;
 private list<notepadwithdatabean> notepadwithdatabeanlist;

 @override
 protected void oncreate(bundle savedinstancestate) {
  super.oncreate(savedinstancestate);
  setcontentview(r.layout.activity_main);
  intent intent1 = new intent(mainactivity.this, mainservice.class);
  startservice(intent1);
  findviews();
  setlisteners();
  initview();

 }

 private void findviews() {
  tv_add = (textview) findviewbyid(r.id.tv_add);
  lv_contents = (listview) findviewbyid(r.id.lv_content);
 }

 private void setlisteners() {
  tv_add.setonclicklistener(this);
 }

 private void initview() {
  datahelper helper = new datahelper(mainactivity.this);
  notepadwithdatabeanlist = new arraylist<notepadwithdatabean>();
  list<notepadbean> notepadbeanlist = helper.getnotepadlist();
  for (int i = 0; i < notepadbeanlist.size(); i++) {
   if (0 == notepadwithdatabeanlist.size()) {
    notepadwithdatabean notepadwithdatabean = new notepadwithdatabean();
    notepadwithdatabean.setdata(notepadbeanlist.get(0).getdate());
    notepadwithdatabeanlist.add(notepadwithdatabean);
   }
   boolean flag = true;
   for (int j = 0; j < notepadwithdatabeanlist.size(); j++) {
    int date = notepadwithdatabeanlist.get(j).getdata();
    if (date == notepadbeanlist.get(i).getdate()) {
     notepadwithdatabeanlist.get(j).getnotepadbeenlist().add(notepadbeanlist.get(i));
     flag = false;
     break;
    }
   }
   if (flag) {
    notepadwithdatabean notepadwithdatabean = new notepadwithdatabean();
    notepadwithdatabean.setdata(notepadbeanlist.get(i).getdate());
    notepadwithdatabeanlist.add(notepadwithdatabean);
    notepadwithdatabeanlist.get(notepadwithdatabeanlist.size() - 1).getnotepadbeenlist().add(notepadbeanlist.get(i));
   }
  }
  notepadeadapter adapter = new notepadeadapter(mainactivity.this, notepadwithdatabeanlist, this);
  lv_contents.setadapter(adapter);
//  setlistviewheightbasedonchildren(lv_contents);
 }

 public void setlistviewheightbasedonchildren(listview listview) {
  if (listview == null) return;
  listadapter listadapter = listview.getadapter();
  if (listadapter == null) {
   // pre-condition
   return;
  }
  int totalheight = 0;
  for (int i = 0; i < listadapter.getcount(); i++) {
   view listitem = listadapter.getview(i, null, listview);
   listitem.measure(0, 0);
   totalheight += listitem.getmeasuredheight();
  }
  viewgroup.layoutparams params = listview.getlayoutparams();
  params.height = totalheight + (listview.getdividerheight() * (listadapter.getcount() - 1));
  listview.setlayoutparams(params);
 }

 @override
 public void onclick(view v) {
  switch (v.getid()) {
   case r.id.tv_add:
    intent intent = new intent();
    bundle bundle = new bundle();
    bundle.putint(globalparams.type_key, globalparams.type_add);
    intent.putextras(bundle);
    intent.setclass(mainactivity.this, addcontentactivity.class);
    startactivityforresult(intent, globalparams.add_request);
    break;
  }
 }

 @override
 protected void onactivityresult(int requestcode, int resultcode, intent data) {
  super.onactivityresult(requestcode, resultcode, data);
  switch (requestcode) {
   case globalparams.add_request:
    if (globalparams.add_result_ok == resultcode) {
     initview();
    }
    break;
  }
 }

 @override
 public void clickitem(int position, int itemposition) {
  bundle bundle = new bundle();
  bundle.putint(globalparams.type_key, globalparams.type_edit);
  bundle.putserializable(globalparams.bean_key, notepadwithdatabeanlist.get(position));
  bundle.putint(globalparams.item_position_key, itemposition);
  intent intent = new intent(this, addcontentactivity.class);
  intent.putextras(bundle);
  startactivityforresult(intent, globalparams.add_request);
 }

 @override
 public void longclickitem(final int position, final int itempostion) {
  alertdialog.builder builder = new alertdialog.builder(mainactivity.this);
  builder.setmessage("确认删除吗？");
  builder.settitle("提示");
  builder.setpositivebutton("确认", new dialoginterface.onclicklistener() {
   @override
   public void onclick(dialoginterface dialog, int which) {
    datahelper helper = new datahelper(mainactivity.this);
    helper.deletenotepad(notepadwithdatabeanlist.get(position).getnotepadbeenlist().get(itempostion).getid());
    initview();
   }
  });
  builder.setnegativebutton("取消", new dialoginterface.onclicklistener() {
   @override
   public void onclick(dialoginterface dialog, int which) {
    dialog.dismiss();
   }
  });
  builder.create().show();
 }
}

addcontentactivity.java代码:

package siso.smartnotef.activity;

import android.app.datepickerdialog;
import android.app.timepickerdialog;
import android.os.bundle;
import android.support.v7.app.appcompatactivity;
import android.view.view;
import android.widget.datepicker;
import android.widget.edittext;
import android.widget.textview;
import android.widget.timepicker;
import android.widget.toast;

import java.util.calendar;

import siso.smartnotef.r;
import siso.smartnotef.db.datahelper;
import siso.smartnotef.global.globalparams;
import siso.smartnotef.model.notepadbean;
import siso.smartnotef.model.notepadwithdatabean;

public class addcontentactivity extends appcompatactivity implements view.onclicklistener {

 private textview tv_save;
 private textview tv_date;
 private textview tv_time;
 private textview tv_cancel;
 private edittext et_content;
 private string time = "";
 private string date = "";
 private bundle bundle;
 private int type;

 @override
 protected void oncreate(bundle savedinstancestate) {
  super.oncreate(savedinstancestate);
  setcontentview(r.layout.activity_add_content);
  bundle=getintent().getextras();
  type=bundle.getint(globalparams.type_key);
  findviews();
  setlisteners();
  initdate();
 }

 private void findviews() {
  et_content=(edittext)findviewbyid(r.id.et_content);
  tv_save = (textview) findviewbyid(r.id.tv_save);
  tv_date = (textview) findviewbyid(r.id.tv_date);
  tv_time = (textview) findviewbyid(r.id.tv_time);
  tv_cancel=(textview)findviewbyid(r.id.tv_cancel);
 }

 private void setlisteners() {
  tv_save.setonclicklistener(this);
  tv_date.setonclicklistener(this);
  tv_time.setonclicklistener(this);
  tv_cancel.setonclicklistener(this);
 }

 private void initdate() {
  calendar c = calendar.getinstance();
  int year=c.get(calendar.year);
  int month=c.get(calendar.month);
  int day=c.get(calendar.day_of_month);
  date=getdate(year,month,day);
  if(type==globalparams.type_edit){
   notepadwithdatabean notepadwithdatabean=(notepadwithdatabean)(bundle.getserializable(globalparams.bean_key));
   et_content.settext(notepadwithdatabean.getnotepadbeenlist().get(bundle.getint(globalparams.item_position_key)).getcontent());
   date=notepadwithdatabean.getdata()+"";
   tv_date.settext(date);
   time=notepadwithdatabean.getnotepadbeenlist().get(bundle.getint(globalparams.item_position_key)).gettime();
   tv_time.settext(time);
  }
 }

 private string getdate(int year,int month,int day){
  string date="";
  date+=year;
  if(month<9){
   date=date+"0"+(month+1);
  }else{
   date+=(month+1);
  }
  if(day<10){
   date=date+"0"+day;
  }else {
   date+=day;
  }
  return date;
 }
 @override
 public void onclick(view v) {
  switch (v.getid()) {
   case r.id.tv_save:
    if(type==globalparams.type_edit){
     update();
    }else {
     save();
    }
    break;
   case r.id.tv_date:
    selectdatedialog();
    break;
   case r.id.tv_time:
    selecttimedialog();
    break;
   case r.id.tv_cancel:
    finish();
    break;
  }
 }
 private void selectdatedialog(){
  calendar c = calendar.getinstance();
  int year=c.get(calendar.year);
  final int month=c.get(calendar.month)+1;
  int day=c.get(calendar.day_of_month);
  new datepickerdialog(addcontentactivity.this, new datepickerdialog.ondatesetlistener() {
   @override
   public void ondateset(datepicker view, int year, int monthofyear, int dayofmonth) {
    date=getdate(year,monthofyear,dayofmonth);
    tv_date.settext(date);
   }
  },year,month,day).show();
 }

 private void selecttimedialog() {
  calendar c = calendar.getinstance();
  int mhour = c.get(calendar.hour_of_day);
  int mminute = c.get(calendar.minute);
  new timepickerdialog(addcontentactivity.this,
    new timepickerdialog.ontimesetlistener() {

     @override
     public void ontimeset(timepicker view,
           int hourofday, int minute) {
      time=formattime(hourofday,minute);
      tv_time.settext(time);
     }
    }, mhour, mminute, true).show();
 }

 private string formattime(int hour,int minute){
  string time=hour+":";
  if(minute<10){
   time=time+"0"+minute;
  }else{
   time+=minute;
  }
  return time;
 }
 private void save() {
  string content = et_content.gettext().tostring();
  if ("".equals(content)) {
   toast.maketext(addcontentactivity.this, "请输入内容", toast.length_short).show();
   return;
  }
  if ("".equals(time)) {
   toast.maketext(addcontentactivity.this, "请选择时间", toast.length_short).show();
   return;
  }
  notepadbean notepadbean = new notepadbean();
  notepadbean.setcontent(content);
  notepadbean.setdate(integer.parseint(date));
  notepadbean.settime(time);
  datahelper helper = new datahelper(addcontentactivity.this);
  helper.insertdata(notepadbean);
  setresult(globalparams.add_result_ok);
  finish();
 }
 private void update(){
  datahelper helper=new datahelper(addcontentactivity.this);
  notepadwithdatabean bean=(notepadwithdatabean)(bundle.getserializable(globalparams.bean_key));
  int itemposition=bundle.getint(globalparams.item_position_key);
  helper.update(bean.getnotepadbeenlist().get(itemposition).getid(),date,time,et_content.gettext().tostring());
  setresult(globalparams.add_result_ok);
  finish();
 }
}

remindactivity.java代码:

package siso.smartnotef.activity;

import android.media.mediaplayer;
import android.media.ringtonemanager;
import android.net.uri;
import android.os.bundle;
import android.support.v7.app.appcompatactivity;
import android.view.view;
import android.widget.button;
import android.widget.textview;

import java.io.ioexception;

import siso.smartnotef.r;
import siso.smartnotef.global.globalparams;

public class remindactivity extends appcompatactivity {

 private textview tv_content;
 private button bt_confirm;
 private mediaplayer mmediaplayer;;
 @override
 protected void oncreate(bundle savedinstancestate) {
  super.oncreate(savedinstancestate);
  setcontentview(r.layout.activity_remind);
  findviews();
  setlisteners();
  bundle bundle=getintent().getextras();
  string content=bundle.getstring(globalparams.content_key);
  tv_content.settext(content);
  playsound();
 }

 private void findviews(){
  tv_content=(textview)findviewbyid(r.id.tv_content);
  bt_confirm=(button) findviewbyid(r.id.bt_confirm);
 }
 private void setlisteners(){
  bt_confirm.setonclicklistener(new view.onclicklistener() {
   @override
   public void onclick(view v) {
    if(null!=mmediaplayer){
     mmediaplayer.stop();
     finish();
    }
   }
  });
 }

 public void playsound() {
  new thread(new runnable() {
   @override
   public void run() {
    mmediaplayer = mediaplayer.create(remindactivity.this, getsystemdefultringtoneuri());
    mmediaplayer.setlooping(true);//设置循环
    try {
     mmediaplayer.prepare();
    } catch (illegalstateexception e) {
     e.printstacktrace();
    } catch (ioexception e) {
     e.printstacktrace();
    }
    mmediaplayer.start();
   }
  }).start();

 }
 //获取系统默认铃声的uri
 private uri getsystemdefultringtoneuri() {
  return ringtonemanager.getactualdefaultringtoneuri(remindactivity.this,
    ringtonemanager.type_ringtone);
 }

}

activity_main.xml内容:

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:id="@+id/activity_main"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical"
 tools:context="siso.smartnotef.activity.mainactivity">

 <relativelayout
  android:layout_width="match_parent"
  android:layout_height="50dp"
  android:background="@color/title_color"
  android:paddingleft="10dp"
  android:paddingright="10dp">
  <textview
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:textcolor="@color/white"
   android:textsize="18sp"
   android:layout_centerinparent="true"
   android:text="智能记事本"/>
  <textview
   android:id="@+id/tv_add"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:textcolor="@color/white"
   android:text="新增"
   android:layout_centervertical="true"
   android:layout_alignparentright="true"
   android:textsize="13sp"/>
 </relativelayout>
 <listview
  android:id="@+id/lv_content"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"></listview>
</linearlayout>

activity_add_content.xml内容:

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:id="@+id/activity_add_content"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical"
 tools:context="siso.smartnotef.activity.addcontentactivity">
 <relativelayout
  android:layout_width="match_parent"
  android:layout_height="50dp"
  android:background="@color/title_color"
  android:paddingleft="10dp"
  android:paddingright="10dp">
  <textview
   android:id="@+id/tv_cancel"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_centervertical="true"
   android:text="取消"
   android:textcolor="@color/white"/>
  <textview
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:textcolor="@color/white"
   android:textsize="18sp"
   android:layout_centerinparent="true"
   android:text="智能记事本"/>
  <textview
   android:id="@+id/tv_save"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:textcolor="@color/white"
   android:text="保存"
   android:layout_centervertical="true"
   android:layout_alignparentright="true"
   />
 </relativelayout>
 <linearlayout
  android:layout_margintop="10dp"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:orientation="horizontal"
  android:layout_gravity="center_horizontal">
  <textview
   android:id="@+id/tv_date"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:padding="5dp"
   android:text="今天"/>
  <textview
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text=" -- "/>
  <textview
   android:id="@+id/tv_time"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:padding="5dp"
   android:text="请选择时间"
   />
 </linearlayout>
 <edittext
  android:id="@+id/et_content"
  android:layout_margintop="10dp"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:inputtype="textmultiline"
  android:gravity="left|top"
  android:layout_margin="20dp"
  android:padding="10dp"
  android:hint="请输入内容"
  android:background="@drawable/edit_back"/>
</linearlayout>

activity_remind.xml内容:

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:background="@color/white"
 android:orientation="vertical"
 tools:context="siso.smartnotef.activity.remindactivity">

 <textview
  android:id="@+id/tv_content"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center_horizontal" />

 <button
  android:id="@+id/bt_confirm"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center_horizontal"
  android:text="取消" />
</linearlayout>

androidmanifest.xml内容:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="siso.smartnotef">
 <uses-permission android:name="android.permission.receive_boot_completed" />
 <uses-permission android:name="android.permission.system_alert_window" />

 <application
  android:allowbackup="true"
  android:icon="@mipmap/ic_launcher"
  android:label="@string/app_name"
  android:supportsrtl="true"
  android:theme="@style/theme.appcompat.light.noactionbar">

  <activity
   android:name=".activity.mainactivity"
   android:theme="@style/theme.appcompat.light.noactionbar">
   <intent-filter>
    <action android:name="android.intent.action.main" />

    <category android:name="android.intent.category.launcher" />
   </intent-filter>
  </activity>

  <receiver android:name=".receiver.mainreceiver">
   <intent-filter>
    <action android:name="android.intent.action.boot_completed" />
   </intent-filter>
  </receiver>

  <activity android:name=".activity.addcontentactivity" />

  <service
   android:name=".service.mainservice"
   android:enabled="true"
   android:exported="true" />

  <activity android:name=".activity.remindactivity"
   ></activity>


 </application>

</manifest>

项目结构如图:

项目运行结果如图:

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。