【工具类】字符串处理工具类
去开头的“/”与结尾的“?1234”
应用大小的转换类
转换进度成百分比形式
去除path中开头的“/”
星级转换方法
View Code
1 import java.text.DecimalFormat; 2 3 public class StringUtil { 4 /** 5 * 6 * @Title: getAppPath 7 * @Description: TODO “/web/webdsfs/sfwe12re.apk?12324”--- 去开头的“/”与结尾的“?1234” 8 * @param str 9 * @return 10 */ 11 public static String getAppPath(String str) { 12 if(str == null){ 13 return null; 14 } 15 if (!str.contains("?") && !str.startsWith("/")) { 16 return str; 17 } 18 int starPosition = 0; 19 int endPosition; 20 if (str.startsWith("/")) { 21 starPosition = 1; 22 } 23 if (str.contains("?")) { 24 endPosition = str.indexOf("?"); 25 } else { 26 endPosition = str.length(); 27 } 28 endPosition = str.length(); 29 return str.substring(starPosition, endPosition); 30 } 31 32 /** 33 * 34 * @Title: getDataSize 35 * @Description: TODO 每个Item中的应用大小的转换类 36 * @param size 37 * @return 38 */ 39 public static String getDataSize(String sSize) { 40 if (sSize == null || "".equals(sSize)) { 41 return " 0 M"; 42 } 43 long size = Long.parseLong(sSize); 44 if (size < 0) { 45 size = 0; 46 } 47 DecimalFormat formater = new DecimalFormat("####.00"); 48 if (size < 1024) { 49 return size + "bytes"; 50 } else if (size < 1024 * 1024) { 51 float kbsize = size / 1024f; 52 return formater.format(kbsize) + "KB"; 53 } else if (size < 1024 * 1024 * 1024) { 54 float mbsize = size / 1024f / 1024f; 55 return formater.format(mbsize) + "MB"; 56 } else if (size < 1024 * 1024 * 1024 * 1024) { 57 float gbsize = size / 1024f / 1024f / 1024f; 58 return formater.format(gbsize) + "GB"; 59 } else { 60 return " 0 M"; 61 } 62 } 63 64 /** 65 * 66 * @Title: getProgress 67 * @Description: TODO 转换进度成百分比形式 68 * @param current 69 * 当前下载大小 70 * @param total 71 * 当大小 72 * @return 73 */ 74 public static String getProgress(int current, int total) { 75 if (total == 0) { 76 return 0 + "%"; 77 } 78 DecimalFormat formater = new DecimalFormat("##0.0"); 79 float kbsize = (float) (current) / (float) total * 100; 80 if(kbsize > 100f){ 81 kbsize = 100f; 82 } 83 return formater.format(kbsize) + "%"; 84 } 85 86 /** 87 * 88 * @Title: removeSpace 89 * @Description: TODO 去除path中开头的“/” 90 * @return 91 */ 92 public static String removeSpace(String path) { 93 if (!path.startsWith("/")) { 94 return path; 95 } 96 String address = path.substring(1, path.length()); 97 return address; 98 } 99 100 /** 101 * 星级转换方法 102 * @param star_level 103 * @return 104 */ 105 public static String getStar_level(String star_level) { 106 if (star_level == null) { 107 return "0.0"; 108 } 109 float star_num = Float.parseFloat(star_level); 110 DecimalFormat formater = new DecimalFormat("#0.0"); 111 return formater.format(star_num); 112 } 113 }