Download and install an application (apk) from internal memory - no SD card

Question

Greetings and a happy new year to all my fellow programmers.

My code downloads an apk file from a remote server. I need to initiate the installation procedure throug

Answer 1

when you send intent to install apk, you can use this function to change mode for apk directory.

private static boolean changeMode(String filePath, String prefixPath) {
    if (TextUtils.isEmpty(prefixPath) || !filePath.startsWith(prefixPath)) {
        return true;
    }

    try {
        String[] args1 = { "chmod", "705", prefixPath};
        Runtime.getRuntime().exec(args1);
    } catch (IOException e) {
        e.printStackTrace();
        return false;
    }

    String subPath = filePath.split(prefixPath)[1];
    String[] subArr = subPath.split(File.separator);
    for (String path : subArr) {
        if (!TextUtils.isEmpty(path)) {
            prefixPath = prefixPath + File.separator + path;
            try {
                if (!prefixPath.endsWith(".apk")) {
                    String[] progArray1 = {"chmod", "705", prefixPath};
                    Runtime.getRuntime().exec(progArray1);
                } else {
                    String[] progArray2 = {"chmod", "604", prefixPath};
                    Runtime.getRuntime().exec(progArray2);
                }
            } catch (IOException e) {
                e.printStackTrace();
                return false;
            }
        }
    }
    return true;
}

And before you send intent, check chmod is it alreay success.

    boolean chmodRes = changeMode(filePath, context.getCacheDir().getAbsolutePath())
            && changeMode(filePath, context.getFilesDir().getAbsolutePath());
    if (!chmodRes) {
        return false;
    }