Status:
真的很感谢所有谁帮助并在这里和第1部分进行了指导! 我已将代码排除在研究和帮助之外,并且已将该工作代码放入EDIT-1 。欢迎批评以使代码更好。
Scenario:
我在第1部分中提到了问题,但由于某种原因,我可以坚持无法使设计和正确的策略使用具有真正集成的代码和理智。
这是一个冗长的问题,问题,答案可能只是一个结束或最终确定插曲,所以我把这第二部分作为一个概要。
可能是我不称职或只是不安阅读这么多的scatered文档和不同策略的答案,或者答案是不同的观点/编码风格。
Question:
继承了我想要的东西,并在观察到不同答案后最终得出结论:
需要每15分钟运行一次代码(甚至,当手机处于睡眠状态时)。 需要唤醒锁我想?
//AT boot, check shared preferences to see boolean "serviceEnabled"?
//if true, set alarm manager to run a service every 15 minuts.
//if false, do nothing.
//On "enable" button clicked.
//make "serviceEnabled" boolean true in shared preferences.
//start alarm manager to run a service every 15 minuts.
//on "Disable" button clicked.
//make "serviceEnabled" boolean false in shared preferences.
//stop alarm manager and deregister it to run ever.
任何人都可以全面告诉我应该使用哪些代码......? 我很谦卑地感谢你对研究的头痛。
Requests:
如果您有信心并且有经验知道您在做什么,请回答。
EDIT-1-Start:
这是我到目前为止所取得的成就。请随时发表评论或批评。
在启动时运行的Booter类。
public class Booter extends BroadcastReceiver {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(Intent.ACTION_BOOT_COMPLETED)) {
Log.e("boot-status","BOOT_COMPLETED=================================================");
// SharedPreferences prefs = context.getSharedPreferences("$MYPACKAGE_preferences",0);
// if (prefs.getBoolean("startatboot",false)) {
if(true){
Intent updateIntent = new Intent();
updateIntent.setClass(context, TheService.class);
PendingIntent pendingIntent = PendingIntent.getService(context, 0, updateIntent, 0);
AlarmManager alarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, java.lang.System.currentTimeMillis()+5000,5000, pendingIntent);
}
}
}
}
服务类
public class TheService extends Service{
@Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
PowerManager pm;
PowerManager.WakeLock wl;
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "My Tag");
wl.acquire();
startForeground(1, new Notification());
////// will do all my stuff here on in the method onStart() or onCreat()?
Log.e("app-status","ping ====================================================");
new Thread(new Runnable() {
@Override
public void run() {
wl.release();
stopSelf();
}
}).start();
return START_STICKY;
}
@Override
public void onDestroy() {
stop();
}
public void stop(){
//if running
// stop
// make vars as false
// do some stopping stuff
stopForeground(true);
}
}
GUI启动/停止
public class SettingsActivity extends Activity {
// some code to initialize things
buttonStop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent updateIntent = new Intent();
updateIntent.setClass(SettingsActivity.this, TheService.class);
PendingIntent pendingIntent = PendingIntent.getService(SettingsActivity.this, 0, updateIntent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager)SettingsActivity.this.getSystemService(Context.ALARM_SERVICE);
alarmManager.cancel(pendingIntent);
//make sharepred boolean as false
}
});
buttonStart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent updateIntent = new Intent();
updateIntent.setClass(SettingsActivity.this, TheService.class);
PendingIntent pendingIntent = PendingIntent.getService(SettingsActivity.this, 0, updateIntent, 0);
AlarmManager alarmManager = (AlarmManager)SettingsActivity.this.getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, java.lang.System.currentTimeMillis()+5000,5000, pendingIntent);
//make shared prefs boolean as true
}
});
Menifiest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="10"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> // irrelevent here
<uses-permission android:name="android.permission.INTERNET" /> // my app uses these though in service class.
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<application
android:allowBackup="true"
android:debuggable="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.myapp.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.myapp.SettingsActivity"
android:label="@string/title_activity_settings" >
</activity>
<service android:name=".TheService" />
<receiver android:name=".Booter" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<category android:name="android.intent.category.HOME" />
</intent-filter>
</receiver>
</application>
</manifest>
EDIT-1-END.
答案 0 :(得分:4)
如果您只需要每15分钟运行一次此代码。那么你真的不需要保持服务全天候运行。真的,不要这样做,这是个坏主意。你需要做的是:
使用AlarmManager每15分钟安排一次警报。然后使用BroadcastReceiver捕获此警报。此警报必须是RTC_WAKE_UP ,以便在深度睡眠时唤醒手机并且必须是实时的,因为它将使用深度睡眠计时器。
广播接收器必须启动服务。现在这个对服务的调用必须这样做:
这里有一个很好的例子:commonsware's WakefulIntentService。您不必按原样使用它,您可以制作自己的服务和广播接收器。只需记住在调用服务之前获取锁定并在服务完成时释放它,否则服务可能不会被调用。
至于您控制服务的活动:
至于你的启动要求:
示例清单:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.yourcompany.yourapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="7"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:allowBackup="false"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.yourcompany.yourapp.activities.HomeActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name="com.yourcompany.yourapp.services.ActionHandlerService" />
<receiver android:name="com.yourcompany.yourapp.receivers.BootReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<category android:name="android.intent.category.HOME" />
</intent-filter>
</receiver>
</application>
</manifest>
取消和安排警报的示例:
public synchronized static void disableTimers(final Context context)
{
Log.i(TAG, "Canceling Alarms");
final Intent in = new Intent(Constants.Actions.TIMER_ACTION);
final PendingIntent pi = PendingIntent.getBroadcast(context, 0, in, PendingIntent.FLAG_UPDATE_CURRENT);
((AlarmManager) context.getSystemService(Context.ALARM_SERVICE)).cancel(pi);
}
public synchronized static void enableTimer(final Context context)
{
Log.i(TAG, "Enabling Alarm");
final Intent in = new Intent(Constants.Actions.TIMER_ACTION);
final PendingIntent pi = PendingIntent.getBroadcast(context, 0, in, PendingIntent.FLAG_UPDATE_CURRENT);
((AlarmManager) context.getSystemService(Context.ALARM_SERVICE)).set(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + FIFTEEN_MINUTES, pi);
}
启动时启动服务的示例:
@Override
public void onReceive(final Context context, final Intent intent)
{
final Intent in = new Intent(context, MyService.class);
in.setAction(Actions.BOOT_RECEIVER_ACTION);
Log.i(TAG, "Boot completed. Starting service.");
MyService.acquireLock();
context.startService(in);
}
在服务上释放锁
private static volatile WakeLock mStaticWakeLock = null;
private synchronized static WakeLock getLock(final Context context)
{
if (mStaticWakeLock == null)
{
final PowerManager mgr = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
mStaticWakeLock = mgr.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, WAKE_LOCK_PARAMETER);
mStaticWakeLock.setReferenceCounted(true);
}
return mStaticWakeLock;
}
@Override
protected final void onHandleIntent(final Intent intent)
{
try
{
run(intent);
}
finally
{
final WakeLock lock = getLock(getApplicationContext());
if (lock.isHeld())
{
lock.release();
Log.i(TAG, "Releasing WakeLock");
}
}
}
就是这样。