Android N(O) adb shell pm install package 流程分析

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参考文献：https://blog.csdn.net/xuezhe__/article/details/73130567

1、alps/android_mtk/frameworks/base/cmds/pm/src/com/android/commands/pm/Pm.java

public static void main(String[] args) {
    int exitCode = 1;try {
        exitCode = new Pm().run(args);///step1} catch (Exception e) {
        Log.e(TAG, "Error", e);System.err.println("Error: " + e);if (e instanceof RemoteException) {
            System.err.println(PM_NOT_RUNNING_ERR);}
    }
    System.exit(exitCode);
}

public int run(String[] args) throws RemoteException {
    boolean validCommand = false;if (args.length < 1) {
        return showUsage();}
   ****************************************************
    if ("install".equals(op)) {
        return runInstall();/step2}

private int runInstall() throws RemoteException {
    long startedTime = SystemClock.elapsedRealtime();
    final InstallParams params = makeInstallParams();
    final String inPath = nextArg();if (params.sessionParams.sizeBytes == -1 && !STDIN_PATH.equals(inPath)) {
        File file = new File(inPath);if (file.isFile()) {
            try {
                ApkLite baseApk = PackageParser.parseApkLite(file, 0); //step3PackageLite pkgLite = new PackageLite(null, baseApk, null, null, null, null,null, null); //step4params.sessionParams.setSize(
                        PackageHelper.calculateInstalledSize(pkgLite, false,params.sessionParams.abiOverride));} catch (PackageParserException | IOException e) {
                System.err.println("Error: Failed to parse APK file: " + e);return 1;}
        } else {
            System.err.println("Error: Can't open non-file: " + inPath);return 1;}
    }

    final int sessionId = doCreateSession(params.sessionParams,params.installerPackageName, params.userId);/step5try 

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