【0105】【項目實戰】-【Android通用框架設計與完整電商APP開發】-【4】【啟動圖功能開發與封裝】

本文轉載自查看原文 2018-03-29 13:13 1570 _0005_Android開發

1.啟動圖功能開發與封裝(倒計時效果)

【添加依賴】Banner依賴；fastjson庫；

2. 持久化

【持久化】包含三種：sp；file；sqlit；

【sp封裝源碼】com.flj.latte.util.storage.LattePreference

 1 package com.flj.latte.util.storage;
 2 
 3 import android.content.SharedPreferences;
 4 import android.preference.PreferenceManager;
 5 
 6 import com.alibaba.fastjson.JSON;
 7 import com.alibaba.fastjson.JSONObject;
 8 import com.flj.latte.app.Latte;
 9 
10 /**
11  * Created by 傅令傑 on 2017/4/22
12  */
13 
14 public final class LattePreference {
15 
16     /**
17      * 提示:
18      * 【用於Activity內部存儲】Activity.getPreferences(int mode)生成 Activity名.xml
19      * 【用於數據的保存】PreferenceManager.getDefaultSharedPreferences(Context)生成 “包名_preferences.xml”
20      * 【自定義名稱】Context.getSharedPreferences(String name,int mode)生成name.xml
21      */
22     private static final SharedPreferences PREFERENCES =
23             PreferenceManager.getDefaultSharedPreferences(Latte.getApplicationContext());
24 
25     private static final String APP_PREFERENCES_KEY = "profile";//定義一個key值；
26 
27     private static SharedPreferences getAppPreference() {
28         return PREFERENCES;
29     }
30 
31     public static void setAppProfile(String val) {
32         getAppPreference()
33                 .edit()
34                 .putString(APP_PREFERENCES_KEY, val)
35                 .apply();
36     }
37 
38     public static String getAppProfile() {
39         return getAppPreference().getString(APP_PREFERENCES_KEY, null);
40     }
41 
42     public static JSONObject getAppProfileJson() {
43         final String profile = getAppProfile();
44         return JSON.parseObject(profile);
45     }
46 
47     public static void removeAppProfile() {
48         getAppPreference()
49                 .edit()
50                 .remove(APP_PREFERENCES_KEY)
51                 .apply();
52     }
53 
54     public static void clearAppPreferences() {
55         getAppPreference()
56                 .edit()
57                 .clear()
58                 .apply();
59     }
60 
61     /**
62      * flag：true：第一次存儲數據；fasle：非第一次存儲數據
63      * @param key
64      * @param flag
65      */
66     public static void setAppFlag(String key, boolean flag) {
67         getAppPreference()
68                 .edit()
69                 .putBoolean(key, flag)
70                 .apply();
71     }
72 
73     public static boolean getAppFlag(String key) {
74         return getAppPreference()
75                 .getBoolean(key, false);
76     }
77 
78     public static void addCustomAppProfile(String key, String val) {
79         getAppPreference()
80                 .edit()
81                 .putString(key, val)
82                 .apply();
83     }
84 
85     public static String getCustomAppProfile(String key) {
86         return getAppPreference().getString(key, "");
87     }
88 
89 }