Android 编程之天气预报闹钟启动服务设置界面加载--4

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>

<activity android:name="com.newer.myweather.SettingsActivity" >
        </activity>

<?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>

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);
	}

}

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);

	}

}

<?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>

布局结构组成图：

源码下载地址：http://download.csdn.net/detail/jspping/8085313