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Helper Utility for Android
import android.content.Context;
import android.graphics.Point;
import android.view.Display;
import android.view.WindowManager;
import android.widget.Toast;
/**
* A collection of utility methods, all static.
*/
public class Utils {
/*
* Making sure public utility methods remain static
*/
private Utils() {
}
/**
* Returns the screen/display size
*
* @param context
* @return
*/
public static Point getDisplaySize(Context context) {
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;
return new Point(width, height);
}
// /**
// * Shows an error dialog with a given text message.
// *
// * @param context
// * @param errorString
// */
//
// public static final void showErrorDialog(Context context, String errorString) {
// new AlertDialog.Builder(context).setTitle(R.string.error)
// .setMessage(errorString)
// .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
// @Override
// public void onClick(DialogInterface dialog, int id) {
// dialog.cancel();
// }
// })
// .create()
// .show();
// }
/**
* Shows a (long) toast
*
* @param context
* @param msg
*/
public static void showToast(Context context, String msg) {
Toast.makeText(context, msg, Toast.LENGTH_LONG).show();
}
/**
* Shows a (long) toast.
*
* @param context
* @param resourceId
*/
public static void showToast(Context context, int resourceId) {
Toast.makeText(context, context.getString(resourceId), Toast.LENGTH_LONG).show();
}
/**
* Formats time in milliseconds to hh:mm:ss string format.
*
* @param millis
* @return
*/
public static String formatMillis(int millis) {
String result = "";
int hr = millis / 3600000;
millis %= 3600000;
int min = millis / 60000;
millis %= 60000;
int sec = millis / 1000;
if (hr > 0) {
result += hr + ":";
}
if (min >= 0) {
if (min > 9) {
result += min + ":";
} else {
result += "0" + min + ":";
}
}
if (sec > 9) {
result += sec;
} else {
result += "0" + sec;
}
return result;
}
public static int dpToPx(int dp, Context ctx) {
float density = ctx.getResources().getDisplayMetrics().density;
return Math.round((float) dp * density);
}
}
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