Slow Execution of Function - DataOutPutStream

Asked Sep 05 '18 at 17:13

Active Sep 05 '18 at 18:41

Viewed 152 times

private void sendCommand(String cmd) {
        Process process = null;
        try {
            process = Runtime.getRuntime().exec("su");
            DataOutputStream os = new DataOutputStream(process.getOutputStream());
            os.writeBytes(cmd);
            os.writeBytes("exit\n");
            os.flush();
            os.close();
            process.waitFor();
        } catch (IOException | InterruptedException e) {
            e.printStackTrace();
        }
    }


String cmd = "/system/bin/input tap 244 580\n";
sendCommand(cmd);
Log.d("Tap","first");
sendCommand(cmd);
Log.d("Tap","second");

09-06 01:09:43.878 13600-13600/com.example.na D/Tap: first

09-06 01:09:46.178 13600-13600/com.example.na D/Tap: second

It's really very slow, I wanted to emulate like a double tap with a delay of maybe 200MS inbetween two taps. but the fastest it can do is 3 seconds ..... Please advice.

Update - Tried this , still the delay between each tap is there, faster though.

process = Runtime.getRuntime().exec("su");
            DataOutputStream os = new DataOutputStream(process.getOutputStream());
            cmd = "/system/bin/input tap 244 580\n";
            os.writeBytes(cmd);
            cmd = "/system/bin/input tap 244 580\n";
            os.writeBytes(cmd);
            os.writeBytes("exit\n");
            os.flush();
            os.close();
            process.waitFor();

edited Sep 05 '18 at 18:41

Phantômaxx

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asked Sep 05 '18 at 17:13

CodeGuru

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You're opening a pseudo-interactive session in which to run each command. How about opening only one session in which to run both commands? – John Bollinger Sep 05 '18 at 17:24
@JohnBollinger updated my question. – CodeGuru Sep 05 '18 at 17:27
DataOutputStream is for writing binary data. I suggest you use PrintStream which is for text. – Peter Lawrey Sep 05 '18 at 17:41
Are you sure that it is not the command itself that introduces the delay? – John Bollinger Sep 05 '18 at 17:41
@PeterLawrey cant seem to find an example with that – CodeGuru Sep 05 '18 at 17:46
DataOutputStream is only the right choice if the program you are running is reading a DataInputStream, otherwise something else is likely to be better. – Peter Lawrey Sep 05 '18 at 17:52
google `PrintStream example` finds 110,000 results. – Peter Lawrey Sep 05 '18 at 17:53
try PrintStream /system/bin/input – CodeGuru Sep 05 '18 at 17:58

Slow Execution of Function - DataOutPutStream

0 Answers0