/** * Created by Jlanglang on 2017/9/4 0004. */public class SimpleParams extends HashMap<String, Object> { //這里放key,與校驗失敗后的提示內容 private HashMap<Object, String> checkParams = new HashMap<>(); public static SimpleParams create() { return new SimpleParams(); } //返回this,鏈式編程 public SimpleParams putP(String key, Object value) { this.putP(key, value, ""); return this; } public SimpleParams putP(String key, Object value, String emptyMessage) { this.put(key, value); checkParams.put(key, emptyMessage); return this; } /** * 檢查params * * @param context * @return */ public boolean checkValue(Context context) { return checkValue(context, null); } /** * 檢查params * * @param context * @return */ public boolean checkValue(Context context, CheckParamsCallback checkParamsCallback) { Set<String> strings = keySet(); for (String str : strings) {  Object value = get(str);  if (value == null || "".equals(value)) {  String s = checkParams.get(str);  //emptyMessage則說明,該參數不校驗  if (!TextUtils.isEmpty(s)) {   //傳入回調,自定義處理   if (checkParamsCallback != null) {   checkParamsCallback.callBack(s);   } else {   //默認Toast提示.   Toast.makeText(context, s, Toast.LENGTH_SHORT).show();   }   return false;  }  } } return true; } public interface CheckParamsCallback { void callBack(String s); }}