uionstudio / sysmonitor

An APP which can monitor the system and inquire hardware information

Sysmonitor

An APP which can monitor the system and inquire hardware information.

System monitor

(1) RAM usage

public static float getUsedPercentValue(Context context) {
	String dir = "/proc/meminfo";
	try {
		FileReader fr = new FileReader(dir);
		BufferedReader br = new BufferedReader(fr, 2048);
		String memoryLine = br.readLine();
		String subMemoryLine = memoryLine.substring(memoryLine.indexOf("MemTotal:"));
		br.close();
		long totalMemorySize = Integer.parseInt(subMemoryLine.replaceAll("\\D+", ""));
		long availableSize = getAvailableMemory(context) / 1024;
		float percent = (float) ((totalMemorySize - availableSize) / (float) totalMemorySize);
		return percent;
	} catch (IOException e) {
		e.printStackTrace();
	}
	return 0;
}

(2) ROM usage

stat = new StatFs(Environment.getExternalStorageDirectory().getPath());
totalBlocks = stat.getBlockCount();
availableBlocks = stat.getAvailableBlocks();
degree4 = (int) ((totalBlocks - availableBlocks) * 100 / totalBlocks);

(3) Battery level

private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
		batteryLevel=intent.getIntExtra(BatteryManager.EXTRA_LEVEL,0);
            	batteryScale=intent.getIntExtra(BatteryManager.EXTRA_SCALE,100);
            	degree3 = (float) (2.7 * (batteryLevel * 100 / batteryScale));
		RotateAnimation animation3 = new RotateAnimation(degree3, 
				degree3, Animation.RELATIVE_TO_SELF, 0.5f,
				Animation.RELATIVE_TO_SELF, 0.5f);
		animation3.setDuration(1000);
		animation3.setFillAfter(true);
		needleView3.startAnimation(animation3);
        }
};

(4) CPU usage

public void readUsage( ){
	try{
		BufferedReader reader = new BufferedReader( new InputStreamReader( new FileInputStream( "/proc/stat" ) ), 1000 );
		String load = reader.readLine();
		reader.close();     
		String[] toks = load.split(" ");
		long currTotal = Long.parseLong(toks[2]) + Long.parseLong(toks[3]) + Long.parseLong(toks[4]);
		long currIdle = Long.parseLong(toks[5]);
		this.usage =(currTotal - total) * 100.0f / (currTotal - total + currIdle - idle);
		this.total = currTotal;
		this.idle = currIdle;
	}
	catch( IOException ex ){
		ex.printStackTrace();           
	}  
}

Hardware information

Please read my blog.