Java tutorial
//package com.java2s; //License from project: Apache License import android.content.Context; import android.text.TextUtils; import android.util.Log; import android.widget.EditText; import android.widget.Toast; public class Main { private static final boolean YES = true; private static final boolean NO = false; public static boolean matchLength(EditText editText, int length) { if (nonEmpty(editText)) { String content = removeBlankSpace(editText.getText().toString()); return content.length() == length; } else { Log.d("SERI_PAR->Error", "edit text object is null"); return NO; } } public static boolean matchLength(Context context, EditText editText, int length, String msg) { if (matchLength(editText, length)) { return YES; } else { showToast(context, msg); return NO; } } public static boolean nonEmpty(EditText editText) { if (editText != null && !(TextUtils.isEmpty(editText.getText().toString().trim()))) { return YES; } else { Log.d("SERI_PAR->Error", "edit text object is null"); return NO; } } public static boolean nonEmpty(Context context, EditText editText, String msg) { if (nonEmpty(editText)) { return YES; } else { showToast(context, msg); return NO; } } public static String removeBlankSpace(String value) { value = value.replace(" ", ""); return value; } public static void showToast(Context context, String msg) { Toast.makeText(context, msg, Toast.LENGTH_SHORT).show(); } }