Question

我从GSON格式的GCM收到一个字符串。我想解析那个字符串，然后生成notification.i希望它应该基于标签生成通知，例如标签是＆＃34;评论＆＃34;那么它应该生成评论通知。我是Android新手。我收到的字符串是 {＆＃34;标记＆＃34;：＆＃34;评价＆＃34;＆＃34;发件人＆＃34;：空，＆＃34;内容＆＃34;：空} 我的代码是

public void categorizNotifications(String msg){
    try {
        JSONObject json=new JSONObject(msg);
        String Tag=json.getString(TAG);
        if(Tag=="comment"){
            String Content=json.getString(CONTENT);

            String Sender=json.getString(SENDER);
            generateNotificationForComment(Content,Sender);
        }
    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

private void generateNotificationForComment(String content2, String sender2) {
    mNotificationManager = (NotificationManager) this
            .getSystemService(Context.NOTIFICATION_SERVICE);

    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
            new Intent(this, Comments.class), 0);

    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
            this).setSmallIcon(R.drawable.ic_action_event)
            .setContentTitle(sender2+" add a comment")
            .setStyle(new NotificationCompat.BigTextStyle().bigText(content2))
            .setContentText(content2);

    mBuilder.setContentIntent(contentIntent);
    mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());
    //Log.d(TAG, "Notification sent successfully.");

}

Answer 1

有几种方法可以解析json对象。我个人建议google gson library

您必须下载库jar并将其添加到您的项目中。

然后你必须编写一个你要解析的对象的模型类。

public class YourObjectModelClass{
   public String tag;
   public String sender;
   public String content;
}

在categorizNotifications（）中，您将替换代码：

JSONObject json=new JSONObject(msg);
Gson gson = new Gson();

YourObjectModelClass model = gson.fromJson(json.toString(), YourObjectModelClass.class); //
String tag = model.tag;
if(tag.equals("comment"){
  String sender = model.sender;
  String content = model.content;
}

依旧......

如何在android中解析JSON格式的String

1 个答案: