Self updating app

Question

TL:DR; version ;)

• my app should run without user interaction (autostart etc works)

• it should update itself (via apk) without any user interactio

Answer 1

If su -c doesn't work, try su 0 (only rooted devices can do su!)

The full answer looks like this:

private void installNewApk()
    {
        String path = mContext.getFilesDir().getAbsolutePath() + "/" + LOCAL_FILENAME;
        mQuickLog.logD("Install at: " + path);
        ProcessUtils.runProcessNoException(mQuickLog, "su", "0", "pm", "install", "-r", path);
    }

With this class defined:

public class ProcessUtils {
    Process process;
    int errCode;
    public ProcessUtils(String ...command) throws IOException, InterruptedException{
        ProcessBuilder pb = new ProcessBuilder(command);
        this.process = pb.start();
        this.errCode = this.process.waitFor();
    }

    public int getErrCode() {
        return errCode;
    }

    public String getOutput() throws IOException {
        InputStream inputStream = process.getInputStream();
        InputStream errStream = process.getErrorStream();
        BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));
        String line;
        StringBuilder sb = new StringBuilder();
        while ((line = br.readLine()) != null) {
            sb.append(line + System.getProperty("line.separator"));
        }

        br = new BufferedReader(new InputStreamReader(errStream));
        while ((line = br.readLine()) != null) {
            sb.append(line + System.getProperty("line.separator"));
        }
        return sb.toString();
    }


    public static String runProcess(String ...command) throws IOException, InterruptedException {
        ProcessUtils p = new ProcessUtils(command);
        if (p.getErrCode() != 0) {
            // err
        }
        return p.getOutput();
    }

    public static void runProcessNoException(String ...command) {
        try {
            runProcess(command);
        } catch (InterruptedException | IOException e) {
            // err
        }
    }
}