小编SML*_*SML的帖子

我正在写.json文件,我想读取该文件,但问题是,当我尝试将整个文件作为字符串读取时,它会在每个字符之前和之后添加空格,并且因为额外的字符,它无法读取json.

Json格式是

[{"description1":"The ThinkerA bronze sculpture by Auguste Rodin. It depicts a man in sober\nmeditation battling with a powerful internal struggle.","description2":"Steve JobsFounder of Apple, he is widely recognized as a charismatic pioneer of\nthe personal computer revolution.","description3":"Justin BieberBorn in 1994, the latest sensation in music industry with numerous\nawards in recent years."}]

但它给出了如下的响应:[{"描述1":"他......

修剪额外的空间我引用了这个,但stil没有用: Java如何用字符串中的单个空格替换2个或更多空格并仅删除前导空格

即时通讯使用此代码

File folderPath = Environment.getExternalStorageDirectory();
File mypath=new File(folderPath, "description.json");
StringBuffer fileData = new StringBuffer(1000);
BufferedReader reader = null;
reader = new BufferedReader(new FileReader(mypath));
char[] buf = new …

我正在编写一个程序,它从服务器(使用JSON)从MySql中获取数据,并相应地 更新UI,

我正在从服务器使用AsyncTask获取两种类型的数据

1) Bubble Answers
2) Comments

parseBubbleAnswers方法成功运行并更新UI,但parseComments类是AsyncTask,并且在doInBackground中调用parseComments方法,没有运行 runOnUiThread(new Runnable() { run() });

任何人都可以帮我解决这个问题

这是我的代码:

public class FetchServer extends Activity
{
    protected void onCreate(Bundle savedInstanceState) 
    {
        String photoId = "1"; // photo id for which the data is fetched
        checkBubbleData(photoId); // which call AsyncTask - 2 differnt calls
    }
    public void checkBubbleData(String photoId)
    {
        new parseBubbleAnswers().execute(photoId); // to fetch bubble answers
        new parseComments().execute(photoId); // to fetch comments
    }
    class parseBubbleAnswers extends AsyncTask<String, Integer,String> 
    { …

如何在Android上使用Facebook SDK 3.0发布消息和图片,

链接 - >可以发布带有链接和所有其他信息的小图片.

http://developers.facebook.com/docs/howtos/androidsdk/3.0/feed-dialog/

我想要的只是在墙上发布带有消息的Pic,而不是带描述的链接？我想抓住当前Android屏幕的屏幕截图并将其保存到SD卡中,我需要在自定义按钮点击时发布消息.

我怎么能用Facebook SDK 3.0 for android做到这一点？

我需要具有TextArea功能的功能

1) maximum total lines- 6 and 
2) in each line there must be maximum of 16 chars
3) if user enters 17th character the cursor should go to the next line 
and user will type in there (the line will be counted)
4) if user reaches to the 7th line it will not allow user to write
5) if user type e.g "Hello, I Love StackOverflow and its features" (counting 
from 1st Char 'H', the 16th char is 't' …

我想使用 ipywidgets 水平显示单选按钮。

radio_input1 = widgets.RadioButtons(options=['选项 1', '选项 2'])

但它垂直显示单选按钮：

我尝试在 HBox 中放置只有一个选项的单选按钮，并向每个单选按钮添加观察者事件，然后从观察者方法中取消选择选定的单选按钮，但在此之前取消观察事件，然后重新注册观察事件。不知怎的，它调用了3次：

output_radio_selected = widgets.Text() # Used to take the user input and access it when needed
radio_input1 = widgets.RadioButtons(options=['Option 1', 'Option 2']) # Declare the set of radio buttons and provide options
radio_input2 = widgets.RadioButtons(options=['Option 3', 'Option 4'])
def bind_selected_to_output(sender): # Connect the input from the user to the output so we can access it
    #radio_input1.unobserve(bind_selected_to_output)
    radio_input1.unobserve_all()
    radio_input1.index=0
    #print(sender)
    global selected_option # Global variable to hold the user …

我在MdiParent其中有形式Menu和Submenu 父窗体说是A型,如果我打开表格B使用使用下面的代码子菜单选项

B addbill = new B();
B.Show();
B.MdiParent = this;

它打开表格B作为表格A的孩子.现在我想开形式C从表格B点击按钮后,B型和B型将被关闭,C型将被打开为儿童A型 上点击按钮后,再次C型,C型将被关闭,B型将作为表格A开放

那么我该怎么办呢？