小编Use*_*er3的帖子

我在导航抽屉中使用可扩展的列表视图.现在,此列表中的项目将从Web服务中获取 - 与子项一起提取.

根据登录类型,一些用户只能看到导航抽屉的一部分.所以我有一些项目有0个孩子,我需要检测这种情况,以便我可以重定向标题点击到另一个页面.

这是我的场景:

我想在单击标题时获取组中的子项数.这甚至可能吗？

到目前为止,我已经尝试过这个,但结果不合适:

 @Override
    public void onDrawerHeaderSelected(ExpandableListView parent, View v, int groupPosition, long id) {

        switch (groupPosition) {
            case 1:
                if (parent.getChildCount() == 0)
                    displayFragment(groupPosition);
                break;
            case 2:
                if (parent.getChildCount() == 0)
                    displayFragment(groupPosition);
                break;
            default:
                displayFragment(groupPosition);
        }


    }

parent.getChildCount() 似乎给我一个可见孩子的总数.

我试图更新一行数据库的内容这里是我的查询:

public void updateAdhoc(String value1, String value2, String value3,String CONTACT_ID){

        int id = Integer.valueOf(CONTACT_ID);
        String update = "UPDATE Adhoc SET Name = " + "'"+value1+"'" +","+
                "DOB =  " + "'"+value2+"'" +","+
                "ImageData =  " + "'"+value3+"'" +","+
                "where " +adhocIdPrimary +"= " +id+";"; 

        mDb.execSQL(update);
    }

代码在where子句中失败.以下是我的表创建字符串:

private static final String DATABASE_CREATE3 = "create table Adhoc (_id integer primary key autoincrement, "
            +"DOB text, " +
            "Name text not null, " +
            "ImageData text);";
    static final String DATABASE_TABLE3 = "Adhoc"; …

我收到以下内容作为Stringwebserveice 的回复:

[
    [
        {
            "dgtype": "adhoc",
            "subtypename": "Person",
            "subtypedesc": "null",
            "summary": "Junaid (Self)",
            "subtype": "person",
            "birthdate": "1995-1-23 ",
            "name": "Junaid (Self)"
        },
        {
            "dgtype": "adhoc",
            "subtypename": "Job",
            "subtypedesc": "null",
            "summary": "Exa",
            "subtype": "person",
            "birthdate": "2010-01-30",
            "name": "Junaid (Self)"
        }
    ]
]

在Java中,我尝试执行以下操作:

JSONArray jArray = new JSONArray(result);  

                System.out.println("Response: "+jArray);

                for(int i = 0; i<= jArray.length(); i++){
                    try {
                        JSONObject oneObject = jArray.getJSONObject(i);

                        String dgtype = oneObject.getString("dgtype");
                        String subtypename = oneObject.getString("subtypename");
                        String subtypedesc = oneObject.getString("subtypedesc");
                        String summary = …

我有一个有数十亿条记录的ArrayList,我遍历每条记录并将其发布到服务器.在每次迭代中调用如下方法:

public void sendNotification(String url, String accountId, String accountPwd, String jsonPayLoad,
            int maxConnections) {
        notificationService = Executors.newFixedThreadPool(maxConnections);
        notificationService.submit(new SendPushNotification(url, accountId, accountPwd, jsonPayLoad));
        notificationService.shutdown();

    }

我的SendPushNotification类如下:

public class SendPushNotification implements Runnable {

    String url;
    String accountId;
    String accountPwd;
    String jsonPayLoad;

    public SendPushNotification(String url, String accountId, String accountPwd, String jsonPayLoad) {
        this.url = url;
        this.accountId = accountId;
        this.accountPwd = accountPwd;
        this.jsonPayLoad = jsonPayLoad;

    }
    public void run() {

        HttpsURLConnection conn = null;
        try {

            StringBuffer response;
            URL url1 = new URL(url);
            conn …

请考虑我对iOS非常新,虽然我能熟练使用Android,但我需要一个iOS项目,我们正在外包并提供图形,实际上我们正在将这个应用程序从iOS6迁移到iOS7,以便它适用于所有iPhone版本.理想情况下,图形的大小应该是多少？我偶然发现了这里,但发现它令人困惑,因为列表似乎只考虑图标,或者我可能无法浏览信息.任何人都可以帮助我使用表格格式的图像与每个iOS版本的大小.或任何链接甚至提示？