最近專案(印尼專案)從伺服器獲取資料  有7000多條  資料量很大  獲取資料時間較長  這樣很不友好   伺服器那邊做了優化  把資料進行ISO-8859-1格式壓縮

這樣得到的資料才50多K   是之前資料的十分之一不到  響應時間大大縮短  伺服器返回的資料格式如下圖

解碼OC程式碼如下  

+ (NSMutableArray *)parseProCityAndAreacountData:(NSDictionary *)result{

    int resultCode = [[result objectForKey:@"success"] intValue];
    NSMutableArray *resultData;
    if (resultCode == 1) {
        
        
        
        NSString *testString = [result objectForKey:@"data"];
        NSStringEncoding enc=CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingISOLatin1);
        NSData *testData = [testString dataUsingEncoding:enc];
        
        NSData *gzipData = [LFCGzipUtility ungzipData:testData];
        NSArray *dataArray = [NSJSONSerialization JSONObjectWithData:gzipData options:NSJSONReadingAllowFragments error:nil];
        resultData = [[NSMutableArray alloc] initWithCapacity:dataArray.count];
        
        
        for (int i=0; i<dataArray.count; i++) {
            
            
            NSDictionary *dic = dataArray[i];
            Provice *c = [[Provice alloc] init];
            c.proName = [dic objectForKey:@"province"];
            c.cityName = [dic objectForKey:@"city"];
            c.countyareaName = [dic objectForKey:@"countyarea"];
            
           
            
            NSString *sectionName = [[NSString stringWithFormat:@"%c",pinyinFirstLetter([c.cityName characterAtIndex:0])] uppercaseString];
            NSUInteger firstLetter = [ALPHA rangeOfString:[sectionName substringToIndex:1]].location;
            c.sortLetters = sectionName;
            c.firstLetter = [NSString stringWithFormat:@"%lu", (unsigned long)firstLetter];
            [resultData addObject:c];
        }
    }
    return resultData;
    

}
 

解碼Android程式碼如下

                       byte[] bytes = s.getBytes("ISO-8859-1");
			Log.d("CityRemoteDao", "解壓前大小:"+bytes.length);
			ByteArrayOutputStream baos = new ByteArrayOutputStream();
			GZIPInputStream in = new GZIPInputStream(new ByteArrayInputStream(bytes));
			byte[] buffer = new byte[1024 * 5];
			int len = 0;
			while ((len = in.read(buffer)) > 0) {
				baos.write(buffer, 0, len);
			}
			bytes = baos.toByteArray();
			Log.d("CityRemoteDao", "解壓後大小:"+bytes.length);
			s = new String(bytes, "UTF-8");
 

1、匯入類 LFCGzipUtility.h   這個是別人寫好的   類似於安卓GZIPInputStream吧   

2、上述LFCGzipUtility類需要 匯入libz.dylib / libz.tbd ( for iOS9.0 or later )

LFCGzipUtility下載地址:  http://download.csdn.net/detail/lixianyue1991/9833170