android 快速开发（二）辅助类的使用：加快开发速度

作用

–

顾名思义，提高开发速度，也可在不断的开发中优化辅助类，最后还是提升应用质量。

简单的辅助类

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L（Log）

package com.yqy.yqy_abstract.utils;

import android.util.Log;

public class L {

/**

• 是否展示，在不需要的时候设置为false

*/

public static boolean isShow = true;

public static String TAG = “YQY”;

/**

• @param tag

•        设置tag
  

• @param msg

*/

public static void e(String tag, String msg) {

if (isShow)

Log.e(tag, msg);

}

/**

• 使用默认tag

• @param msg

*/

public static void e(String msg) {

if (isShow)

Log.e(TAG, msg);

}

// 同理…

}

T（Toast）

package com.yqy.yqy_abstract.utils;

import android.content.Context;

import android.widget.Toast;

public class T {

/**

• 是否展示，在不需要的时候设置为false

*/

public static boolean isShow = true;

public static void showShort(Context context, String text) {

if (isShow)

Toast.makeText(context, text, Toast.LENGTH_SHORT).show();

}

public static void showLong(Context context, String text) {

if (isShow)

Toast.makeText(context, text, Toast.LENGTH_LONG).show();

}

}

SPUtil（sharedpreferences工具类）

package com.yqy.yqy_abstract.utils;

import android.content.SharedPreferences;

import android.content.SharedPreferences.Editor;

/**

• sharedpreferences工具类

• @author YQY

*/

public class SPUtil {

private SharedPreferences sp;

private static SPUtil instance = null;

public static SPUtil getInstance() {

synchronized (SPUtil.class) {

if (instance == null)

instance = new SPUtil();

}

return instance;

}

public void write(String key, String value) {

Editor editor = sp.edit();

editor.putString(key, value);

editor.commit();

}

public void write(String key, int value) {

Editor editor = sp.edit();

editor.putInt(key, value);

editor.commit();

}

public void write(String key, boolean value) {

Editor editor = sp.edit();

editor.putBoolean(key, value);

editor.commit();

}

/**

• 删除key

• @param key

*/

public void remove(String key) {

Editor editor = sp.edit();

editor.remove(key);

editor.commit();

}

public int read(String key, int defaultValue) {

return sp.getInt(key, defaultValue);

}

public boolean read(String key, Boolean defaultValue) {

return sp.getBoolean(key, defaultValue);

}

public String read(String key, String defaultValue) {

return sp.getString(key, defaultValue);

}

}

TextUtils（一个方法，判断是否为空，4.0以上才会有isEmpty方法，自己写一个方法比较合适）

package com.yqy.yqy_abstract.utils;

public class TextUtils {

public static boolean isEmpty(String str) {

if (str == null || str.length() == 0)

return true;

return false;

}

}

FormatTools（判断一些格式的工具类）

package com.yqy.yqy_abstract.utils;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import android.util.Log;

/**

• 判断一些格式的工具类

• @author YQY

*/

public class FormatTools {

/**

• 判断姓名

*/

public static boolean isName(String name) {

String str = “¹{2,5}$”;

Pattern p = Pattern.compile(str);

Matcher m = p.matcher(name);

return m.matches();

}

/****

• 判断客户名称 和全名

• 匹配中文，英文字母和数字及_ , 同时判断长度 2-15

• ***/

public static boolean isNameCus(String name)

{

String str = “[\u4e00-\u9fa5_a-zA-Z0-9_]{2,15}” ;

Pattern p = Pattern.compile(str);

Matcher m = p.matcher(name);

return m.matches();

}

/**

• 判断网址

*/

public static boolean isWebSite(String name) {

String str = “\.[a-zA-Z]{3}$”;

Pattern p = Pattern.compile(str);

Matcher m = p.matcher(name);

return m.matches();

}

/**

• 判断邮箱

• @param email

• @return

*/

public static boolean isEmail(String email) {

String str = “^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$”;

Pattern p = Pattern.compile(str);

Matcher m = p.matcher(email);

return m.matches();

}

// 判断手机号

public static boolean IsPhoneNum(String mobiles) {

if (mobiles.trim().length() == 11) {

Pattern p = Pattern

.compile(“^((13[0-9])|(15[0-9])|(18[0-9])|(17[0-9]))\d{8}$”);

Matcher m = p.matcher(mobiles);

Log.d(“IsPhoneNum”, m.matches() + “”);

return m.matches();

}

return false;

}

// 判断座机

public static boolean IsCallNum(String mobiles) {

boolean isValid = false;

CharSequence inputStr = mobiles;

String expression = “^(0\d{2,3})(\d{7,8})(\d{3,})?$”;

Pattern pattern = Pattern.compile(expression);

Matcher matcher = pattern.matcher(inputStr);

if (matcher.matches()) {

isValid = true;

}

return isValid;

}

// 判断手机或座机

public static boolean IsAllCallNum(String mobiles) {

boolean isValid = false;

String expression = “(^{((13[0-9])|(15[}4,\D])|(18[0,2,5-9]))\d{8}$)|”

• “(^(0\d{2,3})(\d{7,8})(\d{3,})?$)”;

CharSequence inputStr = mobiles;

Pattern pattern = Pattern.compile(expression);

Matcher matcher = pattern.matcher(inputStr);

if (matcher.matches()) {

isValid = true;

}

return isValid;

}

// 判断字符串是数字

public static boolean isNumeric(String str) {

for (int i = 0; i < str.length(); i++) {

// System.out.println(str.charAt(i));

if (!Character.isDigit(str.charAt(i))) {

return false;

}

}

return true;

}

/**

• 判断是否为整数

• @param str

•        传入的字符串
  

• @return 是整数返回true,否则返回false

*/

public static boolean isInteger(String str) {

Pattern pattern = Pattern.compile(“²?[\d]*$”);

return pattern.matcher(str).matches();

}

/**

• 判断是否符合密码规则 6-16为字母数字集合 不包含非法字符

• @param str

• @return

*/

public static boolean isPwd(String str) {

Pattern pattern = Pattern.compile(“³+$”);

return pattern.matcher(str).matches();

}

/**

• 将秒转换成小时分钟

• @param second

• @return

*/

public static String changeTotime(int second) {

int h = 0;

int d = 0;

int s = 0;

int temp = second % 3600;

if (second > 3600) {

h = second / 3600;

if (temp != 0) {

if (temp > 60) {

d = temp / 60;

if (temp % 60 != 0) {

s = temp % 60;

}

} else {

s = temp;

}

}

} else {

d = second / 60;

if (second % 60 != 0) {

s = second % 60;

}

}

// return h + “小时” + d + “分钟” + s + “秒”;

return h + “小时” + d + “分钟”;

}

/**

• 判断是否包含非法字符 & /

• @return

*/

public static boolean isContent(String content) {

if (content.contains(“&”) || content.contains(“/”)) {

return true;

}

return false;

}

/**

• 米转换成公里

*/

public static String miToGl(int distance) {

double dis = Math.round(distance / 100d) / 10d;

return dis + “公里”;

}

/**

• 匹配非表情符号的正则表达式

*/

public static boolean notMood(String str_mood) {

boolean isValid = false;

CharSequence inputStr = str_mood;

String expression = “^{([a-z]|[A-Z]|[0-9]|[\u2E80-\u9FFF]){3,}|@(?:[\w](?:[\w-]*[\w])?\.)+[\w](?:[\w-]*[\w])?|[wap.]{4}|[www.]{4}|[blog.]{5}|[bbs.]{4}|[.com]{4}|[.cn]{3}|[.net]{4}|[.org]{4}|[http://]{7}|[ftp://]{6}$|(^[A-Za-z\d\u4E00-\u9FA5\p{P}‘’“”]+$)|(}[0-9a-zA-Z\u4E00-\u9FA5]+)”;

Pattern pattern = Pattern.compile(expression);

Matcher matcher = pattern.matcher(inputStr);

if (matcher.matches()) {

isValid = true;

}

return isValid;

}

}

ScreenUtils（屏幕 工具类）

package com.yqy.yqy_abstract.utils;

import android.app.Activity;

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.Rect;

import android.util.DisplayMetrics;

import android.view.View;

import android.view.WindowManager;

/**

• 屏幕 工具类

• @author YQY

*/

public class ScreenUtils {

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1. \u4e00-\u9fa5 ↩︎

2. -\+ ↩︎

3. a-z0-9A-Z ↩︎