How I get CPU usage and temperature information into an android app?

Question

I\'m developing an application and I don\'t know how can I get CPU usage and temperature, example in a textview. I try with TYPE_AMBIENT_TEMPERATURE to get temp

Answer 1

As OWADVL answered, you can ready the temperature also as a system file, like this:

int temperature = readSystemFileAsInt("sys/class/thermal/thermal_zone0/temp");

note that the readSystemFileAsInt is not a system call. I found the implementation here

private static int readSystemFileAsInt(final String pSystemFile) throws Exception {
    InputStream in = null;
    try {
        final Process process = new ProcessBuilder(new String[] { "/system/bin/cat", pSystemFile }).start();

        in = process.getInputStream();
        final String content = readFully(in);
        return Integer.parseInt(content);
    } catch (final Exception e) {
        throw new Exception(e);
    }
}

private static final String readFully(final InputStream pInputStream) throws IOException {
    final StringBuilder sb = new StringBuilder();
    final Scanner sc = new Scanner(pInputStream);
    while(sc.hasNextLine()) {
        sb.append(sc.nextLine());
    }
    return sb.toString();
}

About the CPU usage (load) you can look at this question and already working solution by Souch at his gitHub here