這篇文章主要介紹Android實現(xiàn)鬧鐘小程序,文中介紹的非常詳細(xì),具有一定的參考價值,感興趣的小伙伴們一定要看完!
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Android是一種基于Linux內(nèi)核的自由及開放源代碼的操作系統(tǒng),主要使用于移動設(shè)備,如智能手機(jī)和平板電腦,由美國Google公司和開放手機(jī)聯(lián)盟領(lǐng)導(dǎo)及開發(fā)。
最近寫了個鬧鐘的程序,看到SharedPreferences在一個程序中可以共享數(shù)據(jù),SharedPreferences是一個輕量級的鍵值存儲機(jī)制,只可以存儲基本數(shù)據(jù)類型。我就拿來用用,沒想到SharedPreferences太好了,真是輕量級的保存數(shù)據(jù)的好的工具,比sqlite好用多了!以后我又多了一種編程思想了,呵呵,所以現(xiàn)在分享給大家,特別注意這點:這個無法直接在多個程序間共享Preferences數(shù)據(jù)。程序關(guān)閉再打開時間仍然保留你上次設(shè)置的時間。這就是Preferences的作用!
程序歡迎界面:
點擊設(shè)置鬧鐘界面:
點擊鬧鐘設(shè)置中的設(shè)置后的界面:
鬧鐘時間到了彈出dialog:
設(shè)置重復(fù)想起鬧鐘后的界面:
點擊返回鍵彈出的提示:
下面請看代碼:
一、MainActivity中的代碼:
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 = "目前無設(shè)置"; AlertDialog builder = null; Calendar c=Calendar.getInstance(); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //取得活動的Preferences對象 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保存數(shù)據(jù),并提交 SharedPreferences time1Share = getPreferences(0); SharedPreferences.Editor editor = time1Share.edit(); editor.putString("TIME1", tmpS); editor.commit(); Toast.makeText(MainActivity.this,"設(shè)置大明鬧鐘時間為"+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,"大明鬧鐘時間刪除", Toast.LENGTH_SHORT).show(); setTime1.setText("目前無設(shè)置"); SharedPreferences time1Share = getPreferences(0); SharedPreferences.Editor editor = time1Share.edit(); editor.putString("TIME1", "目前無設(shè)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保存數(shù)據(jù),并提交 SharedPreferences time2Share = getPreferences(1); SharedPreferences.Editor editor = time2Share.edit(); editor.putString("TIME2", tmpS); editor.commit(); Toast.makeText(MainActivity.this,"設(shè)置大明鬧鐘時間為"+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,"大明鬧鐘時間刪除", Toast.LENGTH_SHORT).show(); setTime3.setText("目前無設(shè)置"); //SharedPreferences保存數(shù)據(jù),并提交 SharedPreferences time2Share = getPreferences(1); SharedPreferences.Editor editor = time2Share.edit(); editor.putString("TIME2", "目前無設(shè)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("設(shè)置") .setView(setView) .setPositiveButton("確定", 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 = "設(shè)置大明鬧鐘時間為"+tmpS+ "開始,重復(fù)間隔為"+times/1000+"秒"; setTime2.setText("設(shè)置大明鬧鐘時間為"+tmpS+ "開始,重復(fù)間隔為"+times/1000+"秒"); //SharedPreferences保存數(shù)據(jù),并提交 SharedPreferences time3Share = getPreferences(2); SharedPreferences.Editor editor = time3Share.edit(); editor.putString("TIME3", subStr); editor.commit(); Toast.makeText(MainActivity.this,"設(shè)置大明鬧鐘為"+tmpS+ "開始,重復(fù)間隔為"+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,"鬧鐘時間刪除", Toast.LENGTH_SHORT).show(); setTime2.setText("目前無設(shè)置"); //SharedPreferences保存數(shù)據(jù),并提交 SharedPreferences time3Share = getPreferences(2); SharedPreferences.Editor editor = time3Share.edit(); editor.putString("TIME3", "目前無設(shè)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("溫馨提示:") .setMessage("您是否要退出大明鬧鐘程序!!!") .setPositiveButton("確定", 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中的代碼:
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中的代碼:
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("大明鬧鐘響了!!") .setMessage("快完成你制定的計劃吧!!!") .setPositiveButton("關(guān)掉它", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { AlarmAlert.this.finish(); } }) .show(); } }
四、main.xml布局文件的代碼:
五、timeset.xml布局文件中的代碼:
六、string.xml中的代碼:
Hello World, EX06_10 大明原創(chuàng)鬧鐘 設(shè)置鬧鐘 刪除鬧鐘 重復(fù)響起的鬧鐘 大明鬧鐘一 大明鬧鐘二 目前無設(shè)置 開始時間 重復(fù)響起的鬧鐘 秒
七、color.xml中的代碼:
#FFFFFFFF #FF00FFF0 #000000 #0000FF #FF0000
八、AndroidManifest.xml中的代碼
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