In my Application I want to Add and Remove View (like Button, or Textview, Checkbox ) by Coding (Programming ).
In Details:
I have One EditText and One Add Button. User Enter Anything in EditText and Press the Add Button then this one is added in bellow LinearLayout, and whether User click on his/her added Button it will going to next LinearLayout.
I get sucess upto this.
but when user click the button in second LinearLayout then it will come back on first Linearlayout. I am getting error Here, i don't know where I made a Mistake.
And I also facing Problem about how can I Store this all. Like User Add 5 Button and closed the application and whenever he/she came back to application I need whatever he/she previously added.
Here is what i done.
http://dynamicandroidview.blogspot.com/2011/12/how-to-add-view-in-android-by-coding.html
Try to create a database table with minimum 2 columns in your case it will be id and buttonText.
Now when user clicks on the add button it will save text to the database and will create the button dynamically below any buttons which are already created before or as a new button.
Now in your onCreate method get the count of text thats stored in database.Some thing like the following code:
DB getData = DB.getInstance();
getData.open(this);
ArrayList<TextHolder> getList = new ArrayList<TextHolder>();
getList = getData.getAllTextFromGeT();
getData.close();
x = genList.size();
Here x will be the number/count of elements that are already stored in the database.Now you can another int say i and using this i and x in the for loop you can create buttons dynamically.
Inside the loop you can do something like the following to get text for all the buttons that are being created:
TextHolder firstOne = getList.get(i);
String text = firstOne.getText();
You will also need class with getters and setters method in order to convert DB elements into objects.Like in the above code getText() is our getter method which is getting elements from database and returning it here.
here text will be the text of the button.
So every-time users starts the application he will see all the buttons that he created when he ran the application before and newly added button will appear on the spot and also will be stored in the database for future retrieval.
Remember we are just storing text of the button and assigning it unique id which helps us to create the buttons.Hope this helps
Related
I want to dynamically create two editText fields side by side, store information in them and delete whenever I need to.
Right now i have static fields, so it looks like this
Left ones have id siteName1, siteName2... right ones have id siteURL1, siteURL2... Also I have two buttons - Save and Load.
prefsEditor.putString("siteName1_txt", siteName1.getText().toString());
prefsEditor.putString("siteURL1_txt", siteURL1.getText().toString());
and so on...
siteName1.setText(myPrefs.getString("siteName1_txt", "").toString());
siteURL1.setText(myPrefs.getString("siteURL1_txt", "").toString());
and so on...
My app is voice controlled, so when I say command, it checks if I have right website name and opens it.
if (commandList.contains(siteNames[i].getText().toString())) {
mWebView.loadUrl("http://www." + siteURLs[i].getText().toString());
mWebView.setVisibility(View.VISIBLE);
}
Website names nad URLs are put to strings. So my question is - can I add two editTexts and delete them dynamically. Can I save information in them, so when I close and open app - info is saved. Thank you for your time.
As shown in image, I have added the same fragment 5 times in activity by performing on click operation on ADD FRAGMENT button:
Now I want to get all user entered data from those 5 edittext on click of GET DATA button. Is this possible?
(Both buttons is in Main Activity)
First we need to traverse to the dynamic edit text linear layout and then only we can count how many edit texts are avaliable then read the values of corresponding edit text :)
//step:1
LinearLayout layout = (LinearLayout)findViewById(R.id.LinearDynamicEditTextID);// change as your //dynamic EditTexts' parent Linear Layout id.
//step:2
for(int i=0;i<layout.getChildCount();i++)// Count how many children avaliable
{
View v = (View)layout.getChildAt(i);// get the child view
if (v instanceof EditText)// verifying whether the child is EditText for secure.
{
EditText editText = (EditText)layout.getChildAt(i);//thats it.
Log.w("Edit Text "+i+" Value" , editText.getText());
}
}
Now I want to get all user entered data from those 5 edittext on click
of GET DATA button. Is this possible?
Answer: Yes, this is possible.
How?
Solution: You can make public variables in the activity and you can access those variables from the fragment which you are adding. On click of GET DATA button, you can read those variables set by the different fragment and show them in the same Activity or in different Fragment.
I have an array of strings that I am displaying in my activity using a random number every time a button called Next is clicked. How do I create another button called Back, that simply displays the previously or last generated strings in the order they were randomly generated?. So that instead of clicking next to generate another string, I can click Back at any time to view all the previous strings one by one and then click Next again to continue the random selection.
Create a array list of String like
ArrayList<String> arraylist= new ArrayList<String>();
after that using add function add the strings that you are displaying in your activity using a random number every time a button called Next is clicked.
arraylist.add("your_randomly_generated_string");
now your randomly generated string will stored in arraylist one by one
This will store the string now how to retrieve?
following steps may help you not sure ...
While adding the randomly generated string into arraylist initialize the int variable with zero and increment its value after each adding...
public int indexvalue=0;
on your Onclick of NEXT button add two lines
arraylist.add("your_randomly_generated_string");
indexvalue++;
And now on the Onclick of BACK Button Use indexvalue to retrieve...
String data = arraylist.get(indexvalue);
indexvalue--;
here Decremented the indexvalue to retrieve the previous string..
hope you'll understand what im trying to say little bit of lengthy explanation ...
I'm making a very simple launcher for Android. I'm having trouble getting some speed dial buttons to work.
The idea is that when the user presses the speed dial buttons for the first time, they'll be prompted to enter a phone number with a popup window (dialog? I think?). That number will then be assigned to that button, which will then call the assigned number when the button is next pressed. It's not great if they want to reassign a number, but this is just something rough that i'd like to get out of the way. I'm thinking of creating an int to reflect the state of the button (0 = no number assigned, 1 = number is assigned), and using if statements to either bring up the window or call the number.
I don't know how to bring up such a window (although I do know I can bring up a dial pad using (android:inputType="phone")), as well as how to pass the number that the user inputted to an int/long. I'm thinking I can assign the value to an int, although that might not be the most optimal data type. I have a rough idea on how to dial a number once it's given.
What should I do? I'm quite new to programming, so i'm having trouble with this.
may be this could help.
have a long click listener to the buttons.
on long click event, show a dialog widow which accepts the number.
store it in a persistent memory, either db, files or pref utils by android.
in on click button, have a logic to retrieve the stored content and update the views accordingly.
thing is, if i click a button GETDATA - then a new activity starts new.java and i want it to display the contents of my database.
in this new.java i have strings name and id. and i have lined database and this class, such that name and id have the corresponding details that i want to display.
now the ques is, how to display them ?
if i have a
EditText ta;
ta=findViewBy(R.id.edittext1);
ta.setText(name);
should this work ?
it isnt working. also, i dont want user to change the contents and want to make this filed un-editable.
should i use
TextView tf;
ta=findViewBy(R.id.textview1);
tf.setText(name);
?
even this isnt happening.
what is the procedure for this ?
it is done by using append.
TextView ta;
ta=(TextEdit)findViewById(Ri.id.textView1);
String a=getData(1); // goto database, id is 1
ta.append(a);