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我们。

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