Android類型轉換 積累

String-->InputStream

String str = "abc";InputStream inputStream = new ByteArrayInputStream(str.getBytes());

InputStream-->String

String inputStream2String(InputStream is) {    BufferedReader in = new BufferedReader(new InputStreamReader(is));    StringBuffer buffer = new StringBuffer();    String line = "";    try {        while ((line = in.readLine()) != null) {            buffer.append(line);        }    } catch (IOException e) {        e.printStackTrace();    }    return buffer.toString();}

base64-->String

String result = "abc";

byte[] encodeRes = Base64.decode(result, Base64.DEFAULT);

String res = new String(encodeRes);

String-->base64

 

Base64.encodeToString(str.getBytes(), Base64.DEFAULT);

 

char[]-->jstring

jstring jstr;char str[]="Hello World/n";jstr=env->NewStringUTF(str);return jstr;