Search code examples
androidlogcat

Flush Logcat in androidapp

I can’t figure out how to flush the Logcat on my Application. Code below

Saving Logcat into File: (this works)

File File_logcat = new File(Environment.getExternalStorageDirectory(),
        "log.txt");
try {
    Runtime.getRuntime().exec(
            "logcat -f " + File_logcat.getAbsolutePath());
} catch (IOException e) { 
    e.printStackTrace();
}

After that save I flush the Logcat with: (this doesn't work)

try {
    Runtime.getRuntime().exec(
            "logcat --clear"); //Also tested -c or -b all –c
} catch (IOException e) { 
    e.printStackTrace();
}

I’ve searched for a solution on developer.android.com which says “logcat -b all –c” (or even –c) would flush it but none of them succeed.

Did I miss something?

Solution

  • Thanks @CommonsWare. I just discovered that both code snippets work on a rooted mobile device. So it seems like you can't flush it without permission.