Android实现定时自动静音小助手
定时静音助手的实现方法,供大家参考,具体内容如下
背景
突发奇想,刚好这学期刚上安卓课程,想设计一个时间助手。工作、学习中经常会被突如其来的电话所打扰,在上班,上课时这突如其来的铃声会惹来别人的反感,而只靠人们的记性是很难在准确的时间记得静音。如果一直静音,那么在休息时间又有可能漏接重要的电话。基于这种考虑,设计了这样一自动静音小助手,来帮助人们在忙碌的生活中定时静音,定时开启正常模式,简单方便。
界面设计
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <Button android:id="@+id/btnAddAlarm1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="添加静音开始时间" /> <TextView android:id="@+id/tvAlarmRecord1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textSize="16dp" /> <Button android:id="@+id/btnAddAlarm2" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="添加静音停止时间" /> <TextView android:id="@+id/tvAlarmRecord2" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textSize="16dp" / </LinearLayout>
点击完按钮的会出现一个时间点设置的对话框 代码如下
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TimePicker android:id="@+id/timepicker1" android:layout_width="fill_parent" android:layout_height="wrap_content" /> </LinearLayout>
效果图
功能设计
原理介绍
先简单介绍一下工作原理。在添加时间点之后,需要将所添加的时间点保存在文件或者数据库中,我使用了SharedPrefences来保存时间点,key和value都是时间点,然后用到AlarmManager每隔一分钟扫描一次,在扫描过程中从文件获取当前时间(时:分)的value,如果成功获得value就说明当前时间为时间点,此时调用audioManager ,当扫描掉button1设置的文件信息,就调用AudioManager.RINGER_MODE_SILENT,如果扫描到button2设置的文件信息,就调用AudioManager.RINGER_MODE_NORMAL,时期出去正常模式。
此程序包含两个java文件,分别是MainActivity.java和TimeReceiver.java,TimeReceiver主要是判断是否到达时间点,MainActivity 主要是整体的框架和逻辑。
MainActivity代码如下:
package com.example.timesilent; import android.os.Bundle; import android.app.Activity; import android.app.AlarmManager; import android.app.PendingIntent; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView; import android.widget.TimePicker; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; public class MainActivity extends Activity implements OnClickListener { private SharedPreferences sharedPreferences1; private SharedPreferences sharedPreferences2; private TextView tvAlarmRecord1; private TextView tvAlarmRecord2; @Override public void onClick(View v) { View view =getLayoutInflater().inflate(R.layout.time,null); final TimePicker timePicker1=(TimePicker)view.findViewById(R.id.timepicker1); timePicker1.setIs24HourView(true); switch(v.getId()) { case R.id.btnAddAlarm1: { new AlertDialog.Builder(this).setTitle("设置静音开始时间").setView(view).setPositiveButton("确定",new DialogInterface.OnClickListener(){ @Override public void onClick(DialogInterface dialog,int which) { String timeStr=String.valueOf(timePicker1.getCurrentHour())+":"+String.valueOf(timePicker1.getCurrentMinute()); tvAlarmRecord1.setText(tvAlarmRecord1.getText().toString()+"\n"+timeStr); sharedPreferences1.edit().putString(timeStr,timeStr).commit(); } }).setNegativeButton("取消",null).show(); break; } case R.id.btnAddAlarm2: { new AlertDialog.Builder(this).setTitle("设置静音结束时间").setView(view).setPositiveButton("确定",new DialogInterface.OnClickListener(){ @Override public void onClick(DialogInterface dialog,int which) { String timeStr=String.valueOf(timePicker1.getCurrentHour())+":"+String.valueOf(timePicker1.getCurrentMinute()); tvAlarmRecord2.setText(tvAlarmRecord2.getText().toString()+"\n"+timeStr); sharedPreferences2.edit().putString(timeStr,timeStr).commit(); } }).setNegativeButton("取消",null).show(); break; } } } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Button btnAddAlarm1 = (Button) findViewById(R.id.btnAddAlarm1); Button btnAddAlarm2 = (Button) findViewById(R.id.btnAddAlarm2); tvAlarmRecord1 = (TextView) findViewById(R.id.tvAlarmRecord1); tvAlarmRecord2 = (TextView) findViewById(R.id.tvAlarmRecord2); btnAddAlarm1.setOnClickListener(this); btnAddAlarm2.setOnClickListener(this); sharedPreferences1 = getSharedPreferences("alarm_record1", Activity.MODE_PRIVATE); sharedPreferences2 = getSharedPreferences("alarm_record2", Activity.MODE_PRIVATE); AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE); Intent intent = new Intent(this, TimeReceiver.class); PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0); alarmManager.setRepeating(AlarmManager.RTC, 0, 60 * 1000, pendingIntent); } }
TimeReceiver的代码如下:
package com.example.timesilent; import java.util.Calendar; import android.app.Activity; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.media.AudioManager; import android.content.SharedPreferences; public class TimeReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { SharedPreferences sharedPreferences1 = context.getSharedPreferences( "alarm_record1", Activity.MODE_PRIVATE); SharedPreferences sharedPreferences2 = context.getSharedPreferences( "alarm_record2", Activity.MODE_PRIVATE); String hour = String.valueOf(Calendar.getInstance().get( Calendar.HOUR_OF_DAY)); String minute = String.valueOf(Calendar.getInstance().get( Calendar.MINUTE)); String time1 = sharedPreferences1.getString(hour + ":" + minute, null); String time2 = sharedPreferences2.getString(hour + ":" + minute, null); AudioManager audioManager = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE); if (time1!= null) { audioManager.setRingerMode(AudioManager.RINGER_MODE_SILENT); } if (time2!= null) { audioManager.setRingerMode(AudioManager.RINGER_MODE_NORMAL); } } }
程序运行效果
初始状态
开始静音状态
恢复正常状态
源码地址
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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