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Set Error Message on Spinner and EditText in Android when user cannot select any option

Notify user when Spinner and EditText is Empty
I want to notify the user if the spinner field is not selected. How can I perform such a  notification without using a Toast?
Try these line of code in your project which are give below:
Write these of code on onCreate ( ) Method
Here return statement will stop the flow of your program
Spinner
Spinner remarks = (Spinner) findViewById(R.id.sp_remarks2);


if (remarksvalue.equalsIgnoreCase("Select")) {
    TextView errorText = (TextView)remarks.getSelectedView();    errorText.setError(" Please Select Remarks");    errorText.setTextColor(Color.RED);//just to highlight that this is an error    errorText.setText("Please Select Remarks");    return;}
EditText
EditText et_newreading = (EditText)findViewById(R.id.ed_light);


if (newreadingvl.isEmpty()) {
    et_newreading.setError("Please Enter Meter Reading");    return;}

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