先說下問題和解決方案：
Q：在 3.1 版本以後，新安裝而從未啓動過的app不能收到系統的廣播(啓動完成，網絡狀態變化之類的)；
解決方案：
1. 將app做成系統應用，直接安裝在 system/app 目錄下
2.
通過第三方應用，發送帶 FLAG_INCLUDE_STOPPED_PACKAGES 的廣播給stop狀態的自己
下文轉載自 http://www.cnblogs.com/fanfeng/p/3236178.html ，很好的講解了這個問題的原因
Android 開機自啓動
首先實現開機自啓動：
第一步創建一個廣播接收者，如MyBootBroadcastReceiver.java
package com.example;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class MyBootBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Intent startServiceIntent = new Intent(context, MyService.class);
context.startService(startServiceIntent);
//啓動應用
//Intent intent = getPackageManager().getLaunchIntentForPackage(packageName);
//context.startActivity(intent);
}
}
第二步給receiver配置對應intent-filter
<receiver android:name="MyBootBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
第三步添加權限，缺少這步則無法在Android 3.0及其之前版本上自啓動
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
上面的實現有以下【限制】：
1.由於Android系統在外置SD卡加載前廣播ACTION_BOOT_COMPLETED，於是如果應用安裝在外置SD卡上，它無法接收到此廣播，原文見Broadcast Receivers listening for "boot completed"。
2.從Android 3.1（API level和對應NDK版本）開始，系統的包管理器保持跟蹤處於停止狀態(stopped state)的應用程序，提供了一種控制其從後臺進程和其它應用程序啓動的方式。這種停止狀態的應用程序指那些安裝了但從未啓動過的apk，或被用戶在程序管理中force stop的apk。Android系統爲防止廣播無意或不必要開啓停止狀態的組件，它給所有廣播intent添加了FLAG_EXCLUDE_STOPPED_PACKAGES標誌（不設置和同FLAG_INCLUDE_STOPPED_PACKAGES一起設置結果都是此標誌），
public boolean isExcludingStopped() {
return (mFlags&(FLAG_EXCLUDE_STOPPED_PACKAGES|FLAG_INCLUDE_STOPPED_PACKAGES))
== FLAG_EXCLUDE_STOPPED_PACKAGES;
}
/**
* Returns whether the object associated with the given filter is
* "stopped," that is whether it should not be included in the result
* if the intent requests to excluded stopped objects.
*/
protected boolean isFilterStopped(F filter, int userId) {
return false;
}
private void buildResolveList(Intent intent, FastImmutableArraySet<String> categories,
boolean debug, boolean defaultOnly,
String resolvedType, String scheme, F[] src, List<R> dest, int userId) {
...
final boolean excludingStopped = intent.isExcludingStopped();
final int N = src != null ? src.length : 0;
boolean hasNonDefaults = false;
int i;
F filter;
for (i=0; i<N && (filter=src[i]) != null; i++) {
int match;
if (debug) Slog.v(TAG, "Matching against filter " + filter);
if (excludingStopped && isFilterStopped(filter, userId)) {
if (debug) {
Slog.v(TAG, " Filter's target is stopped; skipping");
}
continue;
}
...
此標誌指廣播intent排除停止狀態的應用，原文見Launch controls on stopped applications。用戶可以給自己的應用或者後臺服務添加FLAG_INCLUDE_STOPPED_PACKAGES標誌以喚醒停止狀態的應用，但系統自帶的廣播intent，用戶無法修改，只能接受；注意系統級應用都不是停止狀態。
PackageManagerService.java中重寫IntentResolver
final class ActivityIntentResolver
extends IntentResolver<PackageParser.ActivityIntentInfo, ResolveInfo> {
...
@Override
protected boolean isFilterStopped(PackageParser.ActivityIntentInfo filter, int userId) {
if (!sUserManager.exists(userId)) return true;
PackageParser.Package p = filter.activity.owner;
if (p != null) {
PackageSetting ps = (PackageSetting)p.mExtras;
if (ps != null) {
// System apps are never considered stopped for purposes of
// filtering, because there may be no way for the user to
// actually re-launch them.
return (ps.pkgFlags&ApplicationInfo.FLAG_SYSTEM) == 0
&& ps.getStopped(userId);
}
}
return false;
}
private final class ServiceIntentResolver
extends IntentResolver<PackageParser.ServiceIntentInfo, ResolveInfo> {
...
@Override
protected boolean isFilterStopped(PackageParser.ServiceIntentInfo filter, int userId) {
if (!sUserManager.exists(userId)) return true;
PackageParser.Package p = filter.service.owner;
if (p != null) {
PackageSetting ps = (PackageSetting)p.mExtras;
if (ps != null) {
// System apps are never considered stopped for purposes of
// filtering, because there may be no way for the user to
// actually re-launch them.
return (ps.pkgFlags & ApplicationInfo.FLAG_SYSTEM) == 0
&& ps.getStopped(userId);
}
}
return false;
}