#35 #146 第二次作业

AndroidLabs/app/src/main/java/edu/hzuapps/androidlabs/homeworks/net1414080903235/Net1414080903235Utils.java

@@ -0,0 +1,31 @@
+package edu.hzuapps.androidlabs.homeworks.net1414080903235;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Created by Administrator on 2017/4/14.
+ */
+//实现登录功能：登录时保存用户数据到data.xml文件里面去
+public class Net1414080903235Utils {
+    public static boolean saveUserInfo(Context context,String number,String password){
+        SharedPreferences sp=context.getSharedPreferences("data",Context.MODE_PRIVATE);
+        SharedPreferences.Editor edit=sp.edit();
+        edit.putString("username",number);
+        edit.putString("pwd",password);
+        edit.commit();
+        return true;
+    }
+    public static Map<String,String> getUserInfo(Context context){
+        SharedPreferences sp=context.getSharedPreferences("data",Context.MODE_PRIVATE);
+        String number=sp.getString("number",null);
+        String password=sp.getString("password",null);
+        Map<String,String> userMap=new HashMap<>();//这里可以通过number找到对应的password
+        userMap.put("number",number);
+        userMap.put("password",password);
+        return userMap;
+    }
+}