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0. 前言

Android 8.0 的广播无法接收 Background execution not allowed-PACKAGE_ADDED，该现象已经确认。

基于对广播的严格控制，大幅度减少了静态广播给第三方应用的使用，也是出于限制后台启动的作用。

故类似 android.intent.action.PACKAGE_ADDED 已经无法通过静态广播来监听，但是我们可以通过动态广播注册监听。当然动态广播要求应用要活着，如果被kill掉了，仍旧无法接受到。

1. 现象-广播无法接受日志

BroadcastQueue: Background execution not allowed: receiving Intent { act=android.intent.action.PACKAGE_ADDED dat=package:com.android.cts.launcherapps.simpleapp flg=0x4000010 (has extras) } to com.android.lava.powersave/.recevier.LavaPowerSaveRecevier

2. 查看CTS的代码实现

2.1 CTS 应用可以正常接受

06-04 14:18:56.149978  6458  8036 I ChromeSync: [Sync,SyncIntentOperation] Handling the intent: Intent { act=android.intent.action.PACKAGE_ADDED dat=package:com.android.cts.launcherapps.simpleapp flg=0x4000010 cmp=com.google.android.gms/.chimera.GmsIntentOperationService (has extras) }.

2.2 查看 CTS 源码位置 1

grep -irn “com.android.cts.launcherapps.simpleapp” cts/

root@69959bbb90c6:/home/suhuazhi/8.1/liangxiang# cts/tests/app/src/android/app/cts/ActivityManagerProcessStateTest.java:45:    static final String SIMPLE_PACKAGE_NAME = "com.android.cts.launcherapps.simpleapp";cts/tests/app/src/android/app/cts/ActivityManagerProcessStateTest.java:51:            "com.android.cts.launcherapps.simpleapp.SimpleActivityStartService.RESULT";cts/tests/app/src/android/app/cts/InstrumentationTest.java:61:    static final String SIMPLE_PACKAGE_NAME = "com.android.cts.launcherapps.simpleapp";cts/tests/app/src/android/app/cts/ActivityManagerTest.java:52:    static final String SIMPLE_PACKAGE_NAME = "com.android.cts.launcherapps.simpleapp";cts/tests/app/AndroidManifest.xml:37:            android:targetPackage="com.android.cts.launcherapps.simpleapp">cts/tests/app/AndroidManifest.xml:41:            android:targetPackage="com.android.cts.launcherapps.simpleapp"cts/tests/app/AndroidManifest.xml:42:            android:targetProcesses="com.android.cts.launcherapps.simpleapp:other">cts/tests/app/AndroidManifest.xml:46:                     android:targetPackage="com.android.cts.launcherapps.simpleapp"cts/tests/app/AndroidManifest.xml:51:                     android:targetPackage="com.android.cts.launcherapps.simpleapp"cts/tests/app/AndroidManifest.xml:52:                     android:targetProcesses="com.android.cts.launcherapps.simpleapp:other,com.android.cts.launcherapps.simpleapp">

上述发现没有进行静态广播注册了

2.3 查看 CTS 源码位置 2

• grep -irn “android.intent.action.PACKAGE_ADDED” cts/

• grep -irn “Intent.ACTION_PACKAGE_ADDED” cts/

root@69959bbb90c6:/home/suhuazhi/8.1/liangxiang# grep -irn "android.intent.action.PACKAGE_ADDED" cts/cts/tests/tests/permission2/res/raw/android_manifest.xml:39:    
   cts/tests/tests/permission2/src/android/permission2/cts/ProtectedBroadcastsTest.java:34:        Intent.ACTION_PACKAGE_ADDED,cts/apps/CtsVerifier/src/com/android/cts/verifier/admin/DeviceAdminUninstallTestActivity.java:97:            final IntentFilter packageAddedFilter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);cts/hostsidetests/devicepolicy/app/DeviceAndProfileOwner/src/com/android/cts/deviceandprofileowner/ApplicationHiddenTest.java:43:        PACKAGE_INTENT_FILTER.addAction(Intent.ACTION_PACKAGE_ADDED);cts/hostsidetests/devicepolicy/app/DeviceAndProfileOwner/src/com/android/cts/deviceandprofileowner/ApplicationHiddenTest.java:99:            if (Intent.ACTION_PACKAGE_ADDE .equals(intent.getAction())) {

感觉很像动态广播监听数据

2.4 查看动态广播实现

cts/hostsidetests/devicepolicy/app/DeviceAndProfileOwner/src/com/android/cts/deviceandprofileowner/ApplicationHiddenTest.java:43

package com.android.cts.deviceandprofileowner;public class ApplicationHiddenTest extends BaseDeviceAdminTest {
       static {        PACKAGE_INTENT_FILTER = new IntentFilter();        PACKAGE_INTENT_FILTER.addAction(Intent.ACTION_PACKAGE_ADDED);        PACKAGE_INTENT_FILTER.addAction(Intent.ACTION_PACKAGE_REMOVED);        PACKAGE_INTENT_FILTER.addDataScheme("package");    }    private class ApplicationHiddenReceiver extends BroadcastReceiver {
           @Override        public void onReceive(Context context, Intent intent) {            Uri uri = intent.getData();            if (uri == null) {                return;            }            String pkgName = uri.getSchemeSpecificPart();            if (!PACKAGE_TO_HIDE.equals(pkgName)) {                return;            }            if (Intent.ACTION_PACKAGE_ADDED.equals(intent.getAction())) {                Log.d(TAG, "Received PACKAGE_ADDED broadcast");                mAddedSemaphore.release();            } else if (Intent.ACTION_PACKAGE_REMOVED.equals(intent.getAction())) {                Log.d(TAG, "Received PACKAGE_REMOVED broadcast");                mRemovedSemaphore.release();            }        }    }

2.5 结论

Android 8.0 应用安装和卸载的广播目前 cts 主要使用动态广播监听事件

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