2023-07-21

public class IoManager {
private volatile static IoManager inStance;
private IoTestInface ioTestInface;

private IoManager() {
}

private static Map<String, Class> classMap = new HashMap<>();

static {
    classMap.put("key", RequestTest.class);
}

public static IoManager getInstance() {
    if (inStance == null) {
        synchronized (IoManager.class) {
            if (inStance == null) {
                inStance = new IoManager();
            }
        }
    }
    return inStance;
}

public IoTestInface getRequestTest(String key) {
    if (TextUtils.isEmpty(key)) {
        return null;
    }
    Set<Map.Entry<String, Class>> entries = classMap.entrySet();
    Iterator<Map.Entry<String, Class>> iterator = entries.iterator();
    while (iterator.hasNext()) {
        Map.Entry<String, Class> next = iterator.next();
        String keyStr = next.getKey();
        Class value = next.getValue();
        if (keyStr.equals(key)) {
            try {
                ioTestInface = (IoTestInface) value.newInstance();
            } catch (IllegalAccessException e) {
                throw new RuntimeException(e);
            } catch (InstantiationException e) {
                throw new RuntimeException(e);
            }
            break;
        }

    }
    return ioTestInface;
};

public void setRequest(String key) {
    IoTestInface requestTest = getRequestTest(key);
    requestTest.reqeuest("dsds");
}

public interface IoTestInface {
void reqeuest(String reqe);
}

public class RequestTest implements IoTestInface {
@Override
public void reqeuest(String reqe) {

}

}