Android LocalBroadcastManager解决BroadcastReceiver安全问题及自定义权限
在Android系统中,BroadcastReceiver的设计初衷就是从全局考虑的，可以方便应用程序和系统、应用程序之间、应用程序内的通信，所以对单个应用程序而言BroadcastReceiver是存在安全性问题的，相应问题及解决如下：
1、当应用程序发送某个广播时系统会将发送的Intent与系统中所有注册的BroadcastReceiver的IntentFilter进行匹配，若匹配成功则执行相应的onReceive函数。可以通过类似sendBroadcast(Intent, String)的接口在发送广播时指定接收者必须具备的permission。或通过Intent.setPackage设置广播仅对某个程序有效。
2. 当应用程序注册了某个广播时，即便设置了IntentFilter还是会接收到来自其他应用程序的广播进行匹配判断。对于动态注册的广播可以通过类似registerReceiver(BroadcastReceiver, IntentFilter, String, android.os.Handler)的接口指定发送者必须具备的permission，对于静态注册的广播可以通过android:exported="false"属性表示接收者对外部应用程序不可用，即不接受来自外部的广播。
上面两个问题其实都可以通过LocalBroadcastManager来解决:
Android v4 兼容包提供android.support.v4.content.LocalBroadcastManager工具类，帮助大家在自己的进程内进行局部广播发送与注册，使用它比直接通过sendBroadcast(Intent)发送系统全局广播有以下几点好处。
1 因广播数据在本应用范围内传播，你不用担心隐私数据泄露的问题。
2 不用担心别的应用伪造广播，造成安全隐患。
3 相比在系统内发送全局广播，它更高效。
其使用方法也和正常注册广播类似:
LocalBroadcastManager mLocalBroadcastManager;
BroadcastReceiver mReceiver;
IntentFilter filter = new IntentFilter();
filter.addAction("test");
mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("test")) {
//Do Something
}
}
};
mLocalBroadcastManager.registerReceiver(mReceiver, filter);
//当然，和正常广播一样，也要在对应的生命周期中反注册掉:
@Override
protected void onDestroy() {
super.onDestroy();
mLocalBroadcastManager.unregisterReceiver(mReceiver);
}
转自：http://blog.csdn.net/t12x3456/article/details/9256609
自定义权限
实例（微信）
<permission android:protectionLevel="signature" android:name="com.tencent.mm.oauth.permission.SEND"/> <permission android:protectionLevel="signature" android:name="com.tencent.mm.plugin.permission.WRITE"/> <permission android:protectionLevel="signature" android:name="com.tencent.mm.plugin.permission.READ"/> <permission android:protectionLevel="signature" android:name="com.tencent.mm.permission.MM_MESSAGE"/> <permission android:protectionLevel="signature" android:name="com.tencent.mm.permission.GET_QRCODE_INFO"/> <uses-permission android:name="com.tencent.mm.oauth.permission.SEND"/> <uses-permission android:name="com.tencent.mm.plugin.permission.READ"/> <uses-permission android:name="com.tencent.mm.plugin.permission.WRITE"/> <uses-permission android:name="com.tencent.mm.plugin.permission.SEND"/> <uses-permission android:name="com.tencent.mm.permission.MM_MESSAGE"/> <receiver android:name="com.tencent.mm.booter.MMReceivers$AlarmReceiver" android:process=":push"/> <receiver android:name="com.tencent.mm.jni.platformcomm.Alarm" android:process=":push" android:exported="false"/> <provider android:name="com.tencent.mm.plugin.base.stub.MMPluginProvider" android:writePermission="com.tencent.mm.plugin.permission.WRITE" android:authorities="com.tencent.mm.sdk.plugin.provider"/> <provider android:name="com.tencent.mm.plugin.base.stub.RContactDBProvider" android:writePermission="com.tencent.mm.plugin.permission.WRITE" android:authorities="com.tencent.mm.sdk.contact.provider" android:readPermission="com.tencent.mm.plugin.permission.READ"/> <provider android:name="com.tencent.mm.plugin.base.stub.RConversationDBProvider" android:writePermission="com.tencent.mm.plugin.permission.WRITE" android:authorities="com.tencent.mm.sdk.conversation.provider" android:readPermission="com.tencent.mm.plugin.permission.READ"/> <provider android:name="com.tencent.mm.plugin.base.stub.RMsgInfoDBProvider" android:writePermission="com.tencent.mm.plugin.permission.WRITE" android:authorities="com.tencent.mm.sdk.msginfo.provider" android:readPermission="com.tencent.mm.plugin.permission.READ"/> <activity android:name="com.tencent.mm.plugin.base.stub.WXEntryActivity" android:theme="@style/Theme.Transparent" android:launchMode="singleTop" android:excludeFromRecents="true" android:exported="true"/> -<activity android:name="com.tencent.mm.ui.qrcode.GetQRCodeInfoUI" android:theme="@style/Theme.Transparent" android:configChanges="keyboardHidden|orientation" android:exported="false" android:permission="com.tencent.mm.permission.GET_QRCODE_INFO"> -<intent-filter> <action android:name="android.intent.action.VIEW"/> <category android:name="android.intent.category.DEFAULT"/> <category android:name="android.intent.category.BROWSABLE"/> <data android:scheme="http" android:pathPrefix="/r/" android:host="weixin.qq.com"/> </intent-filter> -<intent-filter> <action android:name="android.intent.action.VIEW"/> <category android:name="android.intent.category.DEFAULT"/> <category android:name="android.intent.category.BROWSABLE"/> <data android:scheme="weixin" android:host="qr"/> </intent-filter> </activity> -<receiver android:name="com.tencent.mm.plugin.shoot.remote.RemoteNetSceneMgr$RespReceiver" android:process=":tools" android:permission="com.tencent.mm.permission.SHOOT_STUB_REQ_RESP"> -<intent-filter> <action android:name="com.tencent.mm.action.SHOOT_STUB_RESP"/> </intent-filter> </receiver> -<receiver android:name="com.tencent.mm.plugin.shootstub.communicate.ReqReceiver" android:permission="com.tencent.mm.permission.SHOOT_STUB_REQ_RESP"> -<intent-filter> <action android:name="com.tencent.mm.action.SHOOT_STUB_REQ"/> </intent-filter> </receiver> <activity android:name="com.tencent.mm.pluginsdk.ui.tools.FileExplorerUI" android:configChanges="keyboardHidden|orientation"/> <service android:name="com.tencent.mm.pluginsdk.model.downloader.FileDownloadManger$FileDownloadService"/> -<receiver android:name="com.tencent.mm.pluginsdk.model.downloader.FileDownloadManger$FileDownloadReceiver"> -<intent-filter> <action android:name="android.intent.action.DOWNLOAD_COMPLETE"/> <action android:name="android.intent.action.DOWNLOAD_NOTIFICATION_CLICKED"/> </intent-filter> </receiver> <activity android:name="com.tencent.mm.ui.tools.MMTextInputUI" android:windowSoftInputMode="stateVisible|adjustPan" android:configChanges="keyboardHidden|orientation"/> -<receiver android:name="com.tencent.mm.compatible.audio.MMRemoteController$Receiver"> -<intent-filter> <action android:name="android.intent.action.MEDIA_BUTTON"/> </intent-filter> </receiver> </application> <uses-permission android:name="android.permission.GET_ACCOUNTS"/> <uses-permission android:name="android.permission.MANAGE_ACCOUNTS"/> <uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS"/> <uses-permission android:name="android.permission.READ_SYNC_SETTINGS"/> <uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS"/> <uses-permission android:name="com.tencent.mm.gwallet.BILLING"/> <uses-permission android:name="com.android.vending.BILLING"/> <uses-permission android:name="com.tencent.mm.ext.permission.READ"/> <uses-permission android:name="com.tencent.mm.ext.permission.WRITE"/> <uses-permission android:name="com.tencent.mm.permission.SHOOT_STUB_REQ_RESP"/> <permission android:protectionLevel="signature" android:name="com.tencent.mm.permission.SHOOT_STUB_REQ_RESP"/> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> <uses-permission android:name="android.permission.READ_PHONE_STATE"/>