How to code an Android app that shows CPU states?

To create an Android app that displays information about the CPU states, you will need to use the Android Device Monitor tool and the Android Debug Bridge (ADB).

• First, open the Android Device Monitor by going to the "Tools" menu in Android Studio and selecting "Android Device Monitor."
• In the Android Device Monitor, select the device you want to monitor from the "Device" dropdown menu.
• In the "Monitor" tab, click on the "File Explorer" button.
• Navigate to the "/sys/devices/system/cpu" directory and select the "cpu0" directory.
• In the "cpu0" directory, you will find a number of files that contain information about the CPU states, such as "cpuinfo_max_freq" and "cpuinfo_min_freq".
• To access these files from your app, use the ADB shell to run the following command: "adb shell cat /sys/devices/system/cpu/cpu0/cpuinfo_max_freq". This will display the maximum frequency of the CPU.
• To display the information in your app, you will need to use a TextView and set its text to the output of the ADB command.

Here is some sample code that demonstrates how to display the maximum frequency of the CPU in an Android app:

TextView tv = (TextView) findViewById(R.id.textview);

try {
    Process process = Runtime.getRuntime().exec("adb shell cat /sys/devices/system/cpu/cpu0/cpuinfo_max_freq");
    BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
    String line = reader.readLine();
    tv.setText(line);
} catch (IOException e) {
    e.printStackTrace();
}

Note that this code assumes that you have a TextView with an ID of "textview" in your layout file.

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