Android实现闹钟小程序

最近写了个闹钟的程序，看到sharedpreferences在一个程序中可以共享数据，sharedpreferences是一个轻量级的键值存储机制，只可以存储基本数据类型。我就拿来用用，没想到sharedpreferences太好了，真是轻量级的保存数据的好的工具，比sqlite好用多了！以后我又多了一种编程思想了，呵呵，所以现在分享给大家，特别注意这点：这个无法直接在多个程序间共享preferences数据。程序关闭再打开时间仍然保留你上次设置的时间。这就是preferences的作用！                

程序欢迎界面：

点击设置闹钟界面：

      

点击闹钟设置中的设置后的界面：                       

              

闹钟时间到了弹出dialog：

 设置重复想起闹钟后的界面：                            

   

点击返回键弹出的提示：

下面请看代码：

一、mainactivity中的代码：

package com.cn.daming;
 
import java.util.calendar;
 
import android.app.activity;
import android.app.alarmmanager;
import android.app.alertdialog;
import android.app.pendingintent;
import android.app.timepickerdialog;
import android.content.dialoginterface;
import android.content.intent;
import android.content.sharedpreferences;
import android.os.bundle;
import android.view.keyevent;
import android.view.layoutinflater;
import android.view.motionevent;
import android.view.view;
import android.widget.button;
import android.widget.edittext;
import android.widget.textview;
import android.widget.timepicker;
import android.widget.toast;
 
public class mainactivity extends activity {
 textview settime1;
 textview settime2;
 textview settime3;
 button mbutton1;
 button mbutton2;
 button mbutton3;
 button mbutton4;
 button mbutton5;
 button mbutton6;
 
 string time1string = null;
 string time2string = null;
 string time3string = null;
 string defalutstring = "目前无设置";
 
 alertdialog builder = null;
 calendar c=calendar.getinstance();
 
 @override
 public void oncreate(bundle savedinstancestate)
 {
  super.oncreate(savedinstancestate);
  setcontentview(r.layout.main);
   
  //取得活动的preferences对象
  sharedpreferences settings = getpreferences(activity.mode_private);
  time1string = settings.getstring("time1", defalutstring);
  time2string = settings.getstring("time2", defalutstring);
  time3string = settings.getstring("time3", defalutstring);
  
  initbutton1();
  initbutton2();
  initbutton3();
  initbutton4();
  initbutton5();
  initbutton6(); 
  
  settime1.settext(time1string);
  settime3.settext(time2string);
  settime2.settext(time3string);
 }
 
 public void initbutton1()
 {
  settime1=(textview) findviewbyid(r.id.settime1);
  mbutton1=(button)findviewbyid(r.id.mbutton1);
  mbutton1.setonclicklistener(new view.onclicklistener()
  {
   public void onclick(view v)
   {
   c.settimeinmillis(system.currenttimemillis());
   int mhour=c.get(calendar.hour_of_day);
   int mminute=c.get(calendar.minute);
   
   
   new timepickerdialog(mainactivity.this,
    new timepickerdialog.ontimesetlistener()
    {    
    public void ontimeset(timepicker view,int hourofday,
          int minute)
    {
     c.settimeinmillis(system.currenttimemillis());
     c.set(calendar.hour_of_day,hourofday);
     c.set(calendar.minute,minute);
     c.set(calendar.second,0);
     c.set(calendar.millisecond,0);
     
     intent intent = new intent(mainactivity.this, callalarm.class);
     pendingintent sender=pendingintent.getbroadcast(
     mainactivity.this,0, intent, 0);
     alarmmanager am;
     am = (alarmmanager)getsystemservice(alarm_service);
     am.set(alarmmanager.rtc_wakeup,
      c.gettimeinmillis(),
      sender
      );
     string tmps=format(hourofday)+"："+format(minute);
     settime1.settext(tmps);
     
     //sharedpreferences保存数据，并提交
     sharedpreferences time1share = getpreferences(0);
     sharedpreferences.editor editor = time1share.edit();
     editor.putstring("time1", tmps);
     editor.commit();
     
     toast.maketext(mainactivity.this,"设置大明闹钟时间为"+tmps,
     toast.length_short)
     .show();
    }   
    },mhour,mminute,true).show();
   }
  });
 }
 
 public void initbutton2()
 {
  mbutton2=(button) findviewbyid(r.id.mbutton2);
  mbutton2.setonclicklistener(new view.onclicklistener()
  {
   public void onclick(view v)
   {
   intent intent = new intent(mainactivity.this, callalarm.class);
   pendingintent sender=pendingintent.getbroadcast(
    mainactivity.this,0, intent, 0);
   alarmmanager am;
   am =(alarmmanager)getsystemservice(alarm_service);
   am.cancel(sender);
   toast.maketext(mainactivity.this,"大明闹钟时间删除",
       toast.length_short).show();
   settime1.settext("目前无设置");
   
   sharedpreferences time1share = getpreferences(0);
    sharedpreferences.editor editor = time1share.edit();
    editor.putstring("time1", "目前无设置");
    editor.commit();
   }
  });
 }
 
 public void initbutton3()
 {
  settime3=(textview) findviewbyid(r.id.settime5);
  mbutton3=(button)findviewbyid(r.id.mbutton5);
  mbutton3.setonclicklistener(new view.onclicklistener()
  {
   public void onclick(view v)
   {
   c.settimeinmillis(system.currenttimemillis());
   int mhour=c.get(calendar.hour_of_day);
   int mminute=c.get(calendar.minute);
   
   
   new timepickerdialog(mainactivity.this,
    new timepickerdialog.ontimesetlistener()
    {    
    public void ontimeset(timepicker view,int hourofday,
          int minute)
    {
     c.settimeinmillis(system.currenttimemillis());
     c.set(calendar.hour_of_day,hourofday);
     c.set(calendar.minute,minute);
     c.set(calendar.second,0);
     c.set(calendar.millisecond,0);
     
     intent intent = new intent(mainactivity.this, callalarm.class);
     pendingintent sender=pendingintent.getbroadcast(
     mainactivity.this,1, intent, 0);
     alarmmanager am;
     am = (alarmmanager)getsystemservice(alarm_service);
     am.set(alarmmanager.rtc_wakeup,
      c.gettimeinmillis(),
      sender
      );
     string tmps=format(hourofday)+"："+format(minute);
     settime3.settext(tmps);
     
     //sharedpreferences保存数据，并提交
     sharedpreferences time2share = getpreferences(1);
     sharedpreferences.editor editor = time2share.edit();
     editor.putstring("time2", tmps);
     editor.commit();
     
     toast.maketext(mainactivity.this,"设置大明闹钟时间为"+tmps,
     toast.length_short)
     .show();
    }   
    },mhour,mminute,true).show();
   }
  });
 }
 
 public void initbutton4()
 {
  mbutton4=(button) findviewbyid(r.id.mbutton6);
  mbutton4.setonclicklistener(new view.onclicklistener()
  {
   public void onclick(view v)
   {
   intent intent = new intent(mainactivity.this, callalarm.class);
   pendingintent sender=pendingintent.getbroadcast(
    mainactivity.this,0, intent, 0);
   alarmmanager am;
   am =(alarmmanager)getsystemservice(alarm_service);
   am.cancel(sender);
   toast.maketext(mainactivity.this,"大明闹钟时间删除",
       toast.length_short).show();
   settime3.settext("目前无设置");
   
   //sharedpreferences保存数据，并提交
    sharedpreferences time2share = getpreferences(1);
    sharedpreferences.editor editor = time2share.edit();
    editor.putstring("time2", "目前无设置");
    editor.commit();
   }
  });
 }
 
 public void initbutton5()
 {
  settime2=(textview) findviewbyid(r.id.settime2);
  layoutinflater factory = layoutinflater.from(this);
  final view setview = factory.inflate(r.layout.timeset,null);
  final timepicker tpicker=(timepicker)setview
         .findviewbyid(r.id.tpicker);
  tpicker.setis24hourview(true);
 
  final alertdialog di=new alertdialog.builder(mainactivity.this)
    .seticon(r.drawable.clock)
    .settitle("设置")
    .setview(setview)
    .setpositivebutton("确定",
    new dialoginterface.onclicklistener()
    {
    public void onclick(dialoginterface dialog, int which)
    {
     edittext ed=(edittext)setview.findviewbyid(r.id.medit);
     int times=integer.parseint(ed.gettext().tostring())
        *1000;
     c.settimeinmillis(system.currenttimemillis());
     c.set(calendar.hour_of_day,tpicker.getcurrenthour());
     c.set(calendar.minute,tpicker.getcurrentminute());
     c.set(calendar.second,0);
     c.set(calendar.millisecond,0);
 
     intent intent = new intent(mainactivity.this,
            callalarm.class);
     pendingintent sender = pendingintent.getbroadcast(
     mainactivity.this,1, intent, 0);
     alarmmanager am;
     am = (alarmmanager)getsystemservice(alarm_service);
     am.setrepeating(alarmmanager.rtc_wakeup,
       c.gettimeinmillis(),times,sender);
     string tmps=format(tpicker.getcurrenthour())+"："+
        format(tpicker.getcurrentminute());
     string substr = "设置大明闹钟时间为"+tmps+
       "开始，重复间隔为"+times/1000+"秒";
     settime2.settext("设置大明闹钟时间为"+tmps+
         "开始，重复间隔为"+times/1000+"秒");
     
     //sharedpreferences保存数据，并提交 
     sharedpreferences time3share = getpreferences(2);
    sharedpreferences.editor editor = time3share.edit();
    editor.putstring("time3", substr);
    editor.commit();
     
     toast.maketext(mainactivity.this,"设置大明闹钟为"+tmps+
         "开始，重复间隔为"+times/1000+"秒",
         toast.length_short).show();
    }
    })
    .setnegativebutton("取消",
    new dialoginterface.onclicklistener()
    {
    public void onclick(dialoginterface dialog, int which)
    {
    }
    }).create();
 
  mbutton5=(button) findviewbyid(r.id.mbutton3);
  mbutton5.setonclicklistener(new view.onclicklistener()
  {
   public void onclick(view v)
   {
   c.settimeinmillis(system.currenttimemillis());
   tpicker.setcurrenthour(c.get(calendar.hour_of_day));
   tpicker.setcurrentminute(c.get(calendar.minute));
   di.show();
   }
  });
 }
 
 public void initbutton6()
 {
  mbutton6=(button) findviewbyid(r.id.mbutton4);
  mbutton6.setonclicklistener(new view.onclicklistener()
  {
   public void onclick(view v)
   {
   intent intent = new intent(mainactivity.this, callalarm.class);
   pendingintent sender = pendingintent.getbroadcast(
    mainactivity.this,1, intent, 0);
   alarmmanager am;
   am = (alarmmanager)getsystemservice(alarm_service);
   am.cancel(sender);
   toast.maketext(mainactivity.this,"闹钟时间删除",
       toast.length_short).show();
   settime2.settext("目前无设置");
   //sharedpreferences保存数据，并提交 
    sharedpreferences time3share = getpreferences(2);
   sharedpreferences.editor editor = time3share.edit();
   editor.putstring("time3", "目前无设置");
   editor.commit();
   }
  });
 }
  
 @override
 public boolean onkeyup(int keycode, keyevent event) {
 
   if(keycode == keyevent.keycode_back){
 builder = new alertdialog.builder(mainactivity.this)
  .seticon(r.drawable.clock)
  .settitle("温馨提示：")
  .setmessage("您是否要退出大明闹钟程序!!!")
  .setpositivebutton("确定",
  new dialoginterface.onclicklistener() {
  public void onclick(dialoginterface dialog,
   int whichbutton) {
   mainactivity.this.finish();
  }
  })
  .setnegativebutton("取消",
  new dialoginterface.onclicklistener() {
  public void onclick(dialoginterface dialog,
   int whichbutton) {
   builder.dismiss();
  }
  }).show();
   }
   return true;
 }
 
 private string format(int x)
 {
  string s=""+x;
  if(s.length()==1) s="0"+s;
  return s;
 }
}

二、callalarm中的代码：

package com.cn.daming;
 
import android.content.context;
import android.content.intent;
import android.content.broadcastreceiver;
import android.os.bundle;
 
public class callalarm extends broadcastreceiver
{
 @override
 public void onreceive(context context, intent intent)
 {
 intent i = new intent(context, alarmalert.class);
  
 bundle bundleret = new bundle();
 bundleret.putstring("str_caller", "");
 i.putextras(bundleret);
 i.addflags(intent.flag_activity_new_task);
 context.startactivity(i);
 }
}

三、alarmalert中的代码：

package com.cn.daming;
 
import android.app.activity;
import android.app.alertdialog;
import android.content.dialoginterface;
import android.os.bundle;
 
public class alarmalert extends activity
{
 @override
 protected void oncreate(bundle savedinstancestate) 
 {
 super.oncreate(savedinstancestate);
 new alertdialog.builder(alarmalert.this)
  .seticon(r.drawable.clock)
  .settitle("大明闹钟响了!!")
  .setmessage("快完成你制定的计划吧!!!")
  .setpositivebutton("关掉它",
   new dialoginterface.onclicklistener()
  {
   public void onclick(dialoginterface dialog, int whichbutton)
   {
   alarmalert.this.finish();
   }
  })
  .show();
 } 
}

四、main.xml布局文件的代码：

<?xml version="1.0" encoding="utf-8"?>
<absolutelayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:id="@+id/layout1"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:background="@drawable/other"
>
 <digitalclock
 android:id="@+id/dclock"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:textsize="40sp"
 android:textcolor="@drawable/blue"
 android:layout_x="70px"
 android:layout_y="32px"
 >
 </digitalclock>
 <textview
  android:id="@+id/text1"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="@string/str_title3"
  android:textsize="20sp"
  android:textcolor="@drawable/black"
  android:layout_x="10px"
  android:layout_y="104px"
 >
 </textview>
 <button
  android:id="@+id/mbutton1"
  android:layout_width="wrap_content"
  android:layout_height="40px"
  android:text="@string/str_button1"
  android:textcolor="@drawable/black"
  android:textsize="18sp"
  android:layout_x="190px"
  android:layout_y="102px"
 >
  </button>
  
  <textview
  android:id="@+id/settime1"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="@string/str_default"
  android:textcolor="@drawable/red"
  android:textsize="16sp"
  android:layout_x="10px"
  android:layout_y="149px"
 >
 </textview>
 <button
  android:id="@+id/mbutton2"
  android:layout_width="wrap_content"
  android:layout_height="40px"
  android:text="@string/str_button2"
  android:textcolor="@drawable/black"
  android:textsize="18sp"
  android:layout_x="190px"
  android:layout_y="142px"
 >
 </button>
 
 <textview
  android:id="@+id/text5"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="@string/str_title4"
  android:textsize="20sp"
  android:textcolor="@drawable/black"
  android:layout_x="10px"
  android:layout_y="216px"
 >
 </textview>
 <button
  android:id="@+id/mbutton5"
  android:layout_width="wrap_content"
  android:layout_height="40px"
  android:text="@string/str_button1"
  android:textcolor="@drawable/black"
  android:textsize="18sp"
  android:layout_x="190px"
  android:layout_y="212px"
 >
  </button>
  
  <textview
  android:id="@+id/settime5"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="@string/str_default"
  android:textcolor="@drawable/red"
  android:textsize="16sp"
  android:layout_x="10px"
  android:layout_y="259px"
 >
 </textview>
 <button
  android:id="@+id/mbutton6"
  android:layout_width="wrap_content"
  android:layout_height="40px"
  android:text="@string/str_button2"
  android:textcolor="@drawable/black"
  android:textsize="18sp"
  android:layout_x="190px"
  android:layout_y="252px"
 >
 </button>
 
 <textview
  android:id="@+id/text2"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="@string/str_title2"
  android:textsize="20sp"
  android:textcolor="@drawable/black"
  android:layout_x="10px"
  android:layout_y="326px"
 >
 </textview>
 <button
  android:id="@+id/mbutton3"
  android:layout_width="wrap_content"
  android:layout_height="40px"
  android:text="@string/str_button1"
  android:textcolor="@drawable/black"
  android:textsize="18sp"
  android:layout_x="190px"
  android:layout_y="322px"
 >
 </button>
 
 <textview
  android:id="@+id/settime2"
  android:layout_width="170px"
  android:layout_height="wrap_content"
  android:text="@string/str_default"
  android:textcolor="@drawable/red"
  android:textsize="16sp"
  android:layout_x="10px"
  android:layout_y="369px"
 >
  </textview>
 <button
  android:id="@+id/mbutton4"
  android:layout_width="wrap_content"
  android:layout_height="40px"
  android:text="@string/str_button2"
  android:textcolor="@drawable/black"
  android:textsize="18sp"
  android:layout_x="190px"
  android:layout_y="362px"
 >
 </button>
 
</absolutelayout>

五、timeset.xml布局文件中的代码：

<?xml version="1.0" encoding="utf-8"?>
<absolutelayout
 android:id="@+id/layout2"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 xmlns:android="http://schemas.android.com/apk/res/android"
>
 <textview
 android:id="@+id/text1"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="@string/str_text1"
 android:textcolor="@drawable/white"
 android:textsize="16sp"
 android:layout_x="10px"
 android:layout_y="32px"
 >
 </textview>
 <textview
 android:id="@+id/text2"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="@string/str_text2"
 android:textcolor="@drawable/white"
 android:textsize="16sp"
 android:layout_x="10px"
 android:layout_y="172px"
 >
 </textview>
 <timepicker
 android:id="@+id/tpicker"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_x="100px"
 android:layout_y="12px"
 >
 </timepicker>
 <edittext
 android:id="@+id/medit"
 android:layout_width="52px"
 android:layout_height="40px"
 android:text="15"
 android:textsize="16sp"
 android:layout_x="120px"
 android:layout_y="162px"
 >
 </edittext>
 <textview
 android:id="@+id/text3"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="@string/str_text3"
 android:textcolor="@drawable/white"
 android:textsize="16sp"
 android:layout_x="180px"
 android:layout_y="172px"
 >
 </textview>
</absolutelayout>

六、string.xml中的代码：

<?xml version="1.0" encoding="utf-8"?>
<resources>
 <string name="hello">hello world, ex06_10</string>
 <string name="app_name">大明原创闹钟</string>
 <string name="str_button1">设置闹钟</string>
 <string name="str_button2">删除闹钟</string>
 <string name="str_title2">重复响起的闹钟</string>
 <string name="str_title3">大明闹钟一</string>
 <string name="str_title4">大明闹钟二</string>
 <string name="str_default">目前无设置</string>
 <string name="str_text1">开始时间</string>
 <string name="str_text2">重复响起的闹钟</string>
 <string name="str_text3">秒</string>
</resources>

七、color.xml中的代码：

<?xml version="1.0" encoding="utf-8"?>
<resources>
 <drawable name="white">#ffffffff</drawable>
 <drawable name="other">#ff00fff0</drawable>
 <drawable name="black">#000000</drawable>
 <drawable name="blue">#0000ff</drawable>
 <drawable name="red">#ff0000</drawable>
</resources>

 八、androidmanifest.xml中的代码

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.cn.daming"
  android:versioncode="1"
  android:versionname="1.0">
 <uses-sdk android:minsdkversion="8" />
 
 <application android:icon="@drawable/icon" android:label="@string/app_name">
  <!-- 註冊receiver callalarm -->
  <receiver android:name=".callalarm" android:process=":remote" />
  <activity android:name=".mainactivity"
     android:label="@string/app_name">
   <intent-filter>
    <action android:name="android.intent.action.main" />
    <category android:name="android.intent.category.launcher" />
   </intent-filter>
  </activity>
  <activity android:name=".alarmalert"
    android:label="@string/app_name">
  </activity>
 </application>
</manifest> 

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。