我遇到了proguard和Gson库的问题。我的代码是
AdServerResult result = (AdServerResult) new Gson().fromJson(json,
AdServerResult.class);
(我使用Gson库创建一个新的AdServerResult
对象)
我的AdServerResult
课程:
public class AdServerResult {
public ArrayList<AdServerObject> shorts ;
public ArrayList<AdServerObject> longs ;
public ArrayList<AdServerObject> getShorts() {
return shorts;
}
public void setShorts(ArrayList<AdServerObject> shorts) {
this.shorts = shorts;
}
public ArrayList<AdServerObject> getLongs() {
return longs;
}
public void setLongs(ArrayList<AdServerObject> longs) {
this.longs = longs;
}
//for debug
@Override
public String toString(){
StringBuilder sb = new StringBuilder() ;
if (shorts!=null && shorts.size()>0){
for (AdServerObject s: shorts){
sb.append("url: "+s.getPicture_url());
}
}
if (longs!=null && longs.size()>0){
for (AdServerObject s: longs){
sb.append("url: "+s.getPicture_url());
}
}
return sb.toString();
}
}
我的AdServerObject
(出现在AdServerResult
班级中):
public class AdServerObject{
public String appli_id;
public String picture_url;
public String getAppli_id() {
return appli_id;
}
public void setAppli_id(String appli_id) {
this.appli_id = appli_id;
}
public String getPicture_url() {
return picture_url;
}
public void setPicture_url(String picture_url) {
this.picture_url = picture_url;
}
}
我的“json”字符串如下:
{
"shorts": [
{ "appli_id": "282", "picture_url": "xxxx"},
{ "appli_id": "275", "picture_url": "xxx" }
],
"longs": [
{"appli_id": "MyAppli3", "picture_url": "xxxxx"},
{"appli_id": "MyAppli4", "picture_url": "xxxxx" }
]
}
此代码有效,但在使用proguard导出时,AdServerResult
实例为null
。
我的proguard文件(只有json部分):
# for gson (GSON @Expose annotation)
-keep public class com.google.gson.Gson
-keepattributes *Annotation*
-keep class sun.misc.Unsafe { *; }
-keep class com.google.gson.stream.** { *; }
-keep class com.google.gson.examples.android.model.** { *; }
...
-keepattributes Signature
-keepattributes *Annotation*
...
-keep public class jp.xxx.ad_server.AdServerResult
-keep public class jp.xxx.ad_server.AdServerObject
-keepclassmembers class jp.xxx.ad_server.AdServerObject
-keepclassmembers class jp.xxx.ad_server.AdServerResult
我多次使用过这个Gson().fromJson
但我从来没有遇到过这样的问题......我正在努力解决这个问题12个小时,我的大脑即将爆炸。
- 修改
我更新了proguard(4.11),但问题仍然存在。
答案 0 :(得分:5)
您希望保留要序列化的类的字段及其原始名称:
-keepclassmembers class jp.xxx.ad_server.AdServerResult$AdServerObject { <fields>; }
-keepclassmembers class jp.xxx.ad_server.AdServerResult { <fields>; }
ProGuard可能会重命名甚至删除它们。