非系統app設置persistent無效

安裝時 if ((flags&PARSE_IS_SYSTEM) != 0) {if (sa.getBoolean(com.android.internal.R.styleable.AndroidManifestApplication_persistent,false)) {ai.flags |= ApplicationInfo.FLAG_PERSISTENT;}}

系統啟動時會拉起persistent的(系統)app

try {List apps = AppGlobals.getPackageManager().getPersistentApplications(STOCK_PM_FLAGS);if (apps != null) {int N = apps.size();int i;for (i=0; i<N; i++) {ApplicationInfo info= (ApplicationInfo)apps.get(i);if (info != null &&!info.packageName.equals("android")) {addAppLocked(info, false, null /* ABI override */);}}} } catch (RemoteException ex) {// pm is in same process, this will never happen. }final ProcessRecord addAppLocked(ApplicationInfo info, boolean isolated,String abiOverride) {if (app.thread == null && mPersistentStartingProcesses.indexOf(app) < 0) {mPersistentStartingProcesses.add(app);startProcessLocked(app, "added application", app.processName, abiOverride,null /* entryPoint */, null /* entryPointArgs */);}return app;}

app進程死掉之后重啟persistent app

private final boolean cleanUpApplicationRecordLocked(ProcessRecord app,boolean restarting, boolean allowRestart, int index) {if (!app.persistent || app.isolated) {} else if (!app.removed) {// This app is persistent, so we need to keep its record around.// If it is not already on the pending app list, add it there// and start a new process for it.if (mPersistentStartingProcesses.indexOf(app) < 0) {mPersistentStartingProcesses.add(app);restart = true;}}if (restart && !app.isolated) {// We have components that still need to be running in the// process, so re-launch it.if (index < 0) {ProcessList.remove(app.pid);}addProcessNameLocked(app);startProcessLocked(app, "restart", app.processName);return true;} else if (app.pid > 0 && app.pid != MY_PID) {}return false; }

非系統app標志位失效

if ((flags&PARSE_IS_SYSTEM) != 0) {if (sa.getBoolean(com.android.internal.R.styleable.AndroidManifestApplication_persistent,false)) {ai.flags |= ApplicationInfo.FLAG_PERSISTENT;} }

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