真个application讲的已经差不多了,在说完这一篇之后,我会上传源码到资源,喜欢的可以下载和学习,今天主讲闹钟启动设置,设置页面的加载
在Android系统中,闹钟和唤醒功能都是由Alarm Manager Service控制并管理的。我们所熟悉的RTC闹钟以及定时器都和它有莫大的关系。为了便于称呼,我常常也把这个service简称为ALMS。
另外,ALMS还提供了一个AlarmManager辅助类。在实际的代码中,应用程序一般都是通过这个辅助类来和ALMS打交道的。就代码而言,辅助类只不过是把一些逻辑语义传递给ALMS服务端而已,具体怎么做则完全要看ALMS的实现代码了。
ALMS的实现代码并不算太复杂,主要只是在管理“逻辑闹钟”。它把逻辑闹钟分成几个大类,分别记录在不同的列表中。然后ALMS会在一个专门的线程中循环等待闹钟的激发,一旦时机到了,就“回调”逻辑闹钟对应的动作,俗称定时器
在我们的application中,extends BroadcastReceiver 我是继承了广播服务,创建了一个闹钟定时服务,sharedPreferences.getString("op", "5 * 60 * 1000") 以首选项的形式存储了间隔时间段,5*60*1000 即5分钟
清单注册广播服务:
<receiver android:name="com.newer.myweather.BootReceiver" > <intent-filter> <action android:name="android.intent.action.BOOT_COMPLETED" /> </intent-filter> </receiver>
清单注册设置活动界面:
<activity android:name="com.newer.myweather.SettingsActivity" > </activity>
设置界面加载布局文件:
<?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" > <PreferenceCategory android:title="分类一" > <CheckBoxPreference android:key="net" android:summaryOff="关闭" android:summaryOn="开启" android:title="通知" /> <EditTextPreference android:dependency="net" android:dialogTitle="配置通知" android:key="WIFI" android:negativeButtonText="取消" android:positiveButtonText="确定" android:title="通知设置" /> </PreferenceCategory> <PreferenceCategory android:title="分类二" > <ListPreference android:dialogTitle="设置更新时间" android:entries="@array/op" android:entryValues="@array/op_value" android:key="op" android:negativeButtonText="取消" android:title="更新时间" /> <MultiSelectListPreference android:dialogTitle="支持的系统" android:entries="@array/os" android:entryValues="@array/os" android:key="os" android:negativeButtonText="取消" android:positiveButtonText="确定" android:title="支持的系统" /> <SwitchPreference android:title="显示模式" android:key="switch" android:switchTextOn="开" android:switchTextOff="关" android:summaryOff="白天" android:summaryOn="夜间"/> <PreferenceScreen android:title="传感器设置" android:summary="GPS、重力传感器、方向传感器"> <CheckBoxPreference android:key="gps" android:title="GPS" android:summaryOn="开启" android:summaryOff="关闭"/> <Preference android:title="重力传感器"/> </PreferenceScreen> </PreferenceCategory> </PreferenceScreen>
设置活动代码:
package com.newer.myweather; /** * 设置活动 * @author Engineer-Jsp * @date 2014.10.27 * */ import android.os.Bundle; import android.preference.PreferenceActivity; public class SettingsActivity extends PreferenceActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.settings); } }
定时闹钟代码:
package com.newer.myweather; /** * 定时闹钟 * @author Engineer-Jsp * @date 2014.10.27 * */ import android.app.AlarmManager; import android.app.PendingIntent; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.preference.PreferenceManager; import android.util.Log; public class BootReceiver extends BroadcastReceiver { private static final String TAG = "BootReceiver-XXXXXXXXXX"; @Override public void onReceive(Context context, Intent intent) { AlarmManager alarmManager = (AlarmManager) context .getSystemService(Context.ALARM_SERVICE); PendingIntent operation = PendingIntent.getService(context, 0, new Intent(context, WeatherService.class), PendingIntent.FLAG_UPDATE_CURRENT); SharedPreferences sharedPreferences = PreferenceManager .getDefaultSharedPreferences(context); String op = sharedPreferences.getString("op", "5 * 60 * 1000"); Log.d(TAG, "SharedPreferences-op" + op); long time = Long.parseLong(op) * 60 * 1000; alarmManager.setRepeating(AlarmManager.RTC, 0, time, operation); Log.d(TAG, "SharedPreferences-time" + time); // alarmManager.cancel(operation); } }
清单文件:
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.newer.myweather" android:versionCode="1" android:versionName="1.0.0" > <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="18" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" /> <!-- GPS 、网络 --> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <application android:allowBackup="true" android:icon="@drawable/ic_action_name" android:label="@string/app_name" android:theme="@android:style/Theme.Holo" > <activity android:name="com.newer.myweather.SplashActivity" android:label="@string/app_name" android:theme="@android:style/Theme.Holo.Light" > <!-- @android:style/Theme.NoTitleBar --> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <service android:name="com.newer.myweather.WeatherService" > </service> <receiver android:name="com.newer.myweather.BootReceiver" > <intent-filter> <action android:name="android.intent.action.BOOT_COMPLETED" /> </intent-filter> </receiver> <activity android:name="com.newer.myweather.SettingsActivity" > </activity> <activity android:name="com.newer.myweather.LocationActivity" > </activity> <activity android:name="com.newer.myweather.MainActivity" > </activity> </application> </manifest>
程序结构:
布局结构组成图:
源码下载地址:http://download.csdn.net/detail/jspping/8085313
时间: 2024-10-03 18:29:31