Android开发【05-20求助贴】Gson解析错误

public class ProductEntity implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
/**
* id
*/
public String id;
/**
*
*/
public String line_name;
/**
*
*/
public String line_detail;
public ProductEntity(String line_name, String line_detail) {
super();
this.line_name = line_name;
this.line_detail = line_detail;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getLine_name() {
return line_name;
}
public void setLine_name(String line_name) {
this.line_name = line_name;
}
public String getLine_detail() {
return line_detail;
}
public void setLine_detail(String line_detail) {
this.line_detail = line_detail;
}
public ProductEntity() {
super();
}
}

试试
Gson gson = new Gson();
BaseEntity busRoutes = gson.fromJson(returnStr, BaseEntity.class)
Log.i("busRoutes", busRoutes.toString());
mData.addAll(busRoutes.getValue());

Gson gson = new Gson();
List<ProductEntity> busRoutes = new ArrayList<>();
Type listType=new TypeToken<List<ProductEntity>>(){}.getType();
busRoutes = gson.fromJson(returnStr,listType);
还有，写代码能不能有点规则一步一步来，写那么乱全写一步里面