Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import android.support.annotation.NonNull;

public class Main {
    private static final char[] PINYIN_T9_MAP = { '2', '2', '2', '3', '3', '3', '4', '4', '4', '5', '5', '5', '6',
            '6', '6', '7', '7', '7', '7', '8', '8', '8', '9', '9', '9', '9' };

    public static char formatCharToT9(char c) {
        if (c >= 'A' && c <= 'Z') {
            return PINYIN_T9_MAP[c - 'A'];
        } else if (c >= 'a' && c <= 'z') {
            return PINYIN_T9_MAP[c - 'a'];
        } else if (isValidT9Key(c)) {
            return c;
        }

        return '\0';
    }

    public static boolean isValidT9Key(char c) {
        return ((c >= '0') && (c <= '9')) || (c == ',') || (c == '+') || (c == '*') || (c == '#');
    }

    public static boolean isValidT9Key(@NonNull CharSequence key) {
        final int LEN = key.length();
        for (int i = 0; i < LEN; i++) {
            if (!isValidT9Key(key.charAt(i))) {
                return false;
            }
        }
        return true;
    }
}