【移动应用开发技术】Android实现闹钟小程序

【移动应用开发技术】Android实现闹钟小程序

这篇文章主要介绍Android实现闹钟小程序，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！Android是一种基于Linux内核的自由及开放源代码的操作系统，主要使用于移动设备，如智能手机和平板电脑，由美国Google公司和开放手机联盟领导及开发。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

.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);

mit();

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");

mit();

}

});

}

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);

mit();

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");

mit();

}

});

}

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);

mit();

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");

mit();

}

});

}

@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

.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

.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="/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="/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

and