Posted on | In

dagger2相关

dagger2笔记：

是个依赖注入框架。Dagger2是第一个用生成的代码实现完整堆栈的。指导原则是生成代码，模仿用户可能已经手写的代码，以确保依赖注入尽可能简单、可跟踪和高性能。

Read more »

Posted on | In

申请第三方参数所需数据

  1. 定包名
  2. 定签名文件（生成签名文件）
  3. 取签名文件的SHA1（第三方参数文档中的“安全码”）
  4. 取签名文件的MD5值（要去掉冒号）（或者用微信签名工具输入包名得到的）32位数字（第三方参数文档中的“应用签名”）
  5. 给运维打好的包
    js中字符串全部替换
    1
    "CD:B0:3E:73:53:2B:C2:A2:54:5D:2E:75:67:74:BB:92".replace(/\:/g,"")

支付宝支付

Read more »

Posted on | In

java_判断是否中文字符

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
public class IsChineseOrEnglish{
    //GENERAL_PUNCTUATION 判断中文的“号
    //CJK_SYMBOLS_and_punctuation 判断中文的。号
    //HALFWIDTH_AND_FULLWIDTH_FORMS 判断中中文的，号

    public static boolean isChinese(Char c){
        Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
        if(ub == Character.UnicodeBlock.CJK_SYMBOLS_and_punctuation
            || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
            || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
            || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION
            || ub == Character.UnicodeBlock.CJK_SYMBOLS_and_punctuation
            || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS){
                return true;
        }
        return false;
    }

    public static void isChiese(String strName){
        char[] ch = strName.toCharArray();
        for(int i = 0; i < ch.length; i++){
            char c = ch[i];
            if(isChinese(c) == true){
                System.out.println(isChiese(c));
                return;
            } else {
                System.out.println(isChiese(c));
                return;
            }
        }
    }

    public static void main(String[] args){
        Random r = new Random();
        for(int i = 0; i < 20; i++){
            System.out.println(r.nextInt(10) + 1);
            isChinese("き");
            isChinese("中国");
        }
    }
}
Read more »

Posted on | In

方法反射实例

1
2
3
4
5
6
7
8
9
10
11
12
13
14
public class ReflectCase {
 
    public static void main(String[] args) throws Exception {
        Proxy target = new Proxy();
        Method method = Proxy.class.getDeclaredMethod("run");
        method.invoke(target);
    }
 
    static class Proxy {
        public void run() {
            System.out.println("run");
        }
    }
}
Read more »

Posted on | In

获取本地IP

1
2
3
4
5
6
7
8
9
10
InetAddress ia = null;
try{
    ia = ia.getLocalHost();
    String localName = ia.getHostName();
    String localIP = ia.getHostAddress();
    Systemt.out.println("本机名称是：" + localName);
    Systemt.out.println("本机的IP是：" + localIP);
} catch(Exception e){
    e.printStackTrace();
}
Read more »

Posted on | In

循环输出HashMap内容

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
private static void loogerHashMapContent() {
    HashMap<String, Object> hashMap = new HashMap<String, Object>();
    hashMap.put("carrier", "carrier1");
    hashMap.put("province", "province1");
    hashMap.put("ismodem", "ismodem1");
    hashMap.put("state", "state1");


    Iterator<Entry<String, Object>> iterator = hashMap.entrySet().iterator();
    while (iterator.hasNext()) {
        Entry<String, Object> entry = iterator.next();
        System.out.print(entry.getKey()+":"+entry.getValue()+",");
    }
    System.out.println();
}
Read more »

Posted on | In

多线程列表删除的解决方案

第一种：Collections.synchronizedList
最常用的方法是通过 Collections 的 synchronizedList 方法将 ArrayList 转换成线程安全的容器后再使用。

1
List<Object> list =Collections.synchronizedList(new ArrayList<Object>);
Read more »