一、环境

高通865 Android10

二、情景

从framework层禁止应用商场下载的应用安装，adb 、pm 可以正常安装

三、代码实现

frameworks/base/packages/PackageInstaller/src/com/android/packageinstaller/InstallStart.java

@@ -35,6 +35,7 @@ import android.os.Build;import android.os.Bundle;import android.os.RemoteException;import android.util.Log;
+import android.provider.Settings;/*** Select which activity is the first visible activity of the installation and forward the intent to
@@ -46,10 +47,23 @@ public class InstallStart extends Activity {private static final String DOWNLOADS_AUTHORITY = "downloads";private IPackageManager mIPackageManager;private boolean mAbortInstall = false;
+    int installState = 0;@Overrideprotected void onCreate(@Nullable Bundle savedInstanceState) {super.onCreate(savedInstanceState);
+		installState = Settings.Global.getInt(getContentResolver(), "installState", 0);
+		if(installState == 0){
+			finish();
+			return;	
+		}
+
+		Settings.Global.putInt(getContentResolver(), "installState", 0);
+
+
+mIPackageManager = AppGlobals.getPackageManager();Intent intent = getIntent();String callingPackage = getCallingPackage();

frameworks/base/packages/PackageInstaller/src/com/android/packageinstaller/PackageInstallerActivity.java

@@ -246,15 +246,6 @@ public class PackageInstallerActivity extends AlertActivity {}private void initiateInstall() {
-        Log.d(TAG," initiateInstall uid : " + Process.myUid()/100000 );
-        if((Process.myUid()/100000) != Process.ROOT_UID
-            && (Process.myUid()/100000) != Process.SHELL_UID){
-			return;
-        }
-
-String pkgName = mPkgInfo.packageName;// Check if there is already a package on the device with this name// but it has been renamed to something else.