{"id":1835,"date":"2023-03-29T21:45:52","date_gmt":"2023-03-29T13:45:52","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1835"},"modified":"2023-04-22T09:17:33","modified_gmt":"2023-04-22T01:17:33","slug":"startup-process-for-android-hook-activity","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/29\/startup-process-for-android-hook-activity\/","title":{"rendered":"Android Hook-Activity\u7684\u542f\u52a8\u6d41\u7a0b"},"content":{"rendered":"

\u4e24\u79cd\u542f\u52a8Activity\u7684\u65b9\u5f0f\u6e90\u7801\u8ffd\u8e2a<\/h2>\n

\u6e90\u7801\u57fa\u4e8e SDK 28 ~ Android 9.0<\/p>\n

\u65b9\u5f0f1\uff1a\u4f7f\u7528Activity\u81ea\u5e26\u7684startActivity<\/h3>\n

\u4ee3\u7801\u793a\u4f8b<\/h4>\n

<\/p>\n

private void startActivityByActivity() {\n    Intent i = new Intent(MainActivity.this, Main2Activity.class);\n    startActivity(i);\n}<\/code><\/pre>\n
\u7a0b\u5e8f\u6267\u884c\u8d70\u5411\u56fe<\/h4>\n
\u4ee3\u7801\u8ffd\u8e2a\uff1aActivity.java<\/code><\/p>\n
@Override\npublic void startActivity(Intent intent) {\n    this.startActivity(intent, null);\n}<\/code><\/pre>\n
@Override\npublic void startActivity(Intent intent, @Nullable Bundle options) {\n    if (options != null) {\n        startActivityForResult(intent, -1, options);\n    } else {\n        \/\/ Note we want to go through this call for compatibility with\n        \/\/ applications that may have overridden the method.\n        startActivityForResult(intent, -1);\n    }\n}<\/code><\/pre>\n
public void startActivityForResult(@RequiresPermission Intent intent, int requestCode,\n        @Nullable Bundle options) {\n    if (mParent == null) {\n        options = transferSpringboardActivityOptions(options);\n        Instrumentation.ActivityResult ar =\n            mInstrumentation.execStartActivity(\n                this, mMainThread.getApplicationThread(), mToken, this,\n                intent, requestCode, options);\n        if (ar != null) {\n            mMainThread.sendActivityResult(\n                mToken, mEmbeddedID, requestCode, ar.getResultCode(),\n                ar.getResultData());\n        }\n        if (requestCode >= 0) {\n            \/\/ If this start is requesting a result, we can avoid making\n            \/\/ the activity visible until the result is received.  Setting\n            \/\/ this code during onCreate(Bundle savedInstanceState) or onResume() will keep the\n            \/\/ activity hidden during this time, to avoid flickering.\n            \/\/ This can only be done when a result is requested because\n            \/\/ that guarantees we will get information back when the\n            \/\/ activity is finished, no matter what happens to it.\n            mStartedActivity = true;\n        }\n\n        cancelInputsAndStartExitTransition(options);\n        \/\/ TODO Consider clearing\/flushing other event sources and events for child windows.\n    } else {\n        if (options != null) {\n            mParent.startActivityFromChild(this, intent, requestCode, options);\n        } else {\n            \/\/ Note we want to go through this method for compatibility with\n            \/\/ existing applications that may have overridden it.\n            mParent.startActivityFromChild(this, intent, requestCode);\n        }\n    }\n}<\/code><\/pre>\n
\u8fd9\u91cc\u6709\u4e2aif (mParent == null)<\/code>\u5224\u5b9a\uff0c\u5148\u770btrue<\/code>\u5206\u652f\uff0c\u53d1\u73b0\u4e00\u4e2a\u5751\uff0cmInstrumentation.execStartActivity<\/code>\u8fd9\u91cc\u5c45\u7136\u4e0d\u80fd\u7ee7\u7eed\u5f80\u4e0b\u7d22\u5f15\uff1f\u5f88\u5947\u602a\uff0c\u4e0d\u8fc7\u4e0d\u91cd\u8981\uff0c\u6211\u4eec\u76f4\u63a5\u8fdb\u5165Instrumentation.java<\/code>\u53bb\u627e\u8fd9\u4e2a\u65b9\u6cd5:<\/p>\n
public ActivityResult execStartActivity(\n        Context who, IBinder contextThread, IBinder token, Activity target,\n        Intent intent, int requestCode, Bundle options) {\n    IApplicationThread whoThread = (IApplicationThread) contextThread;\n    Uri referrer = target != null ? target.onProvideReferrer() : null;\n    if (referrer != null) {\n        intent.putExtra(Intent.EXTRA_REFERRER, referrer);\n    }\n    if (mActivityMonitors != null) {\n        synchronized (mSync) {\n            final int N = mActivityMonitors.size();\n            for (int i=0; i<N; i++) {\n                final ActivityMonitor am = mActivityMonitors.get(i);\n                ActivityResult result = null;\n                if (am.ignoreMatchingSpecificIntents()) {\n                    result = am.onStartActivity(intent);\n                }\n                if (result != null) {\n                    am.mHits++;\n                    return result;\n                } else if (am.match(who, null, intent)) {\n                    am.mHits++;\n                    if (am.isBlocking()) {\n                        return requestCode >= 0 ? am.getResult() : null;\n                    }\n                    break;\n                }\n            }\n        }\n    }\n    try {\n        intent.migrateExtraStreamToClipData();\n        intent.prepareToLeaveProcess(who);\n        int result = ActivityManager.getService()\n            .startActivity(whoThread, who.getBasePackageName(), intent,\n                    intent.resolveTypeIfNeeded(who.getContentResolver()),\n                    token, target != null ? target.mEmbeddedID : null,\n                    requestCode, 0, null, options);\n        checkStartActivityResult(result, intent);\n    } catch (RemoteException e) {\n        throw new RuntimeException("Failure from system", e);\n    }\n    return null;\n}<\/code><\/pre>\n
\u5728\u8fd9\u4e2aexecStartActivity<\/code>\u4e2d\uff0c\u53ef\u4ee5\u627e\u5230\u5173\u952e\u4ee3\u7801\uff1a<\/p>\n
int result = ActivityManager.getService()\n    .startActivity(whoThread, who.getBasePackageName(), intent,\n            intent.resolveTypeIfNeeded(who.getContentResolver()),\n            token, target != null ? target.mEmbeddedID : null,\n            requestCode, 0, null, options);\ncheckStartActivityResult(result, intent);<\/code><\/pre>\n
\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\u542f\u52a8Activity\uff0c\u6700\u7ec8\u7684\u6267\u884c\u6743\u88ab\u4ea4\u7ed9\u4e86ActivityManager.getService()<\/code>\uff08\u5373AMS\uff09\uff0c\u5b83\u7684\u4f5c\u7528\u662f\u542f\u52a8\u4e00\u4e2aActivity\u5e76\u4e14\u8fd4\u56deresult<\/code>\uff0c\u7136\u540echeckStartActivityResult(result, intent);<\/code>\u8fd9\u53e5\u8bdd\uff0c\u5bf9\u5f53\u524d\u7684\u8df3\u8f6c\u610f\u56feintent<\/code>\u8fdb\u884c\u68c0\u6d4b\uff1b<\/p>\n
\/** @hide *\/\npublic static void checkStartActivityResult(int res, Object intent) {\n    if (!ActivityManager.isStartResultFatalError(res)) {\n        return;\n    }\n\n    switch (res) {\n        case ActivityManager.START_INTENT_NOT_RESOLVED:\n        case ActivityManager.START_CLASS_NOT_FOUND:\n            if (intent instanceof Intent && ((Intent)intent).getComponent() != null)\n                throw new ActivityNotFoundException(\n                        "Unable to find explicit activity class "\n                        + ((Intent)intent).getComponent().toShortString()\n                        + "; have you declared this activity in your AndroidManifest.xml?");\n            throw new ActivityNotFoundException(\n                    "No Activity found to handle " + intent);\n        case ActivityManager.START_PERMISSION_DENIED:\n            throw new SecurityException("Not allowed to start activity "\n                    + intent);\n        case ActivityManager.START_FORWARD_AND_REQUEST_CONFLICT:\n            throw new AndroidRuntimeException(\n                    "FORWARD_RESULT_FLAG used while also requesting a result");\n        case ActivityManager.START_NOT_ACTIVITY:\n            throw new IllegalArgumentException(\n                    "PendingIntent is not an activity");\n        case ActivityManager.START_NOT_VOICE_COMPATIBLE:\n            throw new SecurityException(\n                    "Starting under voice control not allowed for: " + intent);\n        case ActivityManager.START_VOICE_NOT_ACTIVE_SESSION:\n            throw new IllegalStateException(\n                    "Session calling startVoiceActivity does not match active session");\n        case ActivityManager.START_VOICE_HIDDEN_SESSION:\n            throw new IllegalStateException(\n                    "Cannot start voice activity on a hidden session");\n        case ActivityManager.START_ASSISTANT_NOT_ACTIVE_SESSION:\n            throw new IllegalStateException(\n                    "Session calling startAssistantActivity does not match active session");\n        case ActivityManager.START_ASSISTANT_HIDDEN_SESSION:\n            throw new IllegalStateException(\n                    "Cannot start assistant activity on a hidden session");\n        case ActivityManager.START_CANCELED:\n            throw new AndroidRuntimeException("Activity could not be started for "\n                    + intent);\n        default:\n            throw new AndroidRuntimeException("Unknown error code "\n                    + res + " when starting " + intent);\n    }\n}<\/code><\/pre>\n
have you declared this activity in your AndroidManifest.xml<\/code>\u8fd9\u53e5\u5f02\u5e38\u5e94\u8be5\u5f88\u719f\u6089\u4e86\u5427\uff1f\u542f\u52a8\u4e00\u4e2a\u6ca1\u6709\u6ce8\u518c\u7684Activity\u7684\u62a5\u9519<\/p>\n
\u518d\u770b\u4e2aif (mParent == null)<\/code>\u7684false<\/code>\u5206\u652f:<\/p>\n
public void startActivityFromChild(@NonNull Activity child, @RequiresPermission Intent intent,\n        int requestCode, @Nullable Bundle options) {\n    options = transferSpringboardActivityOptions(options);\n    Instrumentation.ActivityResult ar =\n        mInstrumentation.execStartActivity(\n            this, mMainThread.getApplicationThread(), mToken, child,\n            intent, requestCode, options);\n    if (ar != null) {\n        mMainThread.sendActivityResult(\n            mToken, child.mEmbeddedID, requestCode,\n            ar.getResultCode(), ar.getResultData());\n    }\n    cancelInputsAndStartExitTransition(options);\n}<\/code><\/pre>\n
\u63a7\u5236\u6743\u4f9d\u7136\u662f\u4ea4\u7ed9\u4e86mInstrumentation.execStartActivity()<\/code>\uff0c\u5269\u4f59\u7684\u4ee3\u7801\u7d22\u5f15\u548c\u4e0a\u9762\u7684\u4e00\u6837<\/p>\n
\u6240\u4ee5\uff0c\u4ee3\u7801\u7d22\u5f15\u7684\u7ed3\u8bba\uff0c\u6309\u7167\u4e00\u5f20\u56fe\u6765\u8868\u793a\u5c31\u662f\uff1a<\/p>\n