I need a button that, when clicked, would add a TextView below it. Also, the TextView cannot be made invisible and appear on click in this case, it must add the TextView. Was looking for this and couldn't find anything that suits my needs.
Set a listener on the button and for each click, create a new TextView and add it to the layout.
final LinearLayout theLayout = (LinearLayout)findViewById(R.id.thelayout);
Button button = (Button)findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
TextView tv = new TextView(MainActivity.this);
tv.setText("Hello");
tv.setTextColor(Color.BLACK);
theLayout.addView(tv);
}
});
Update: Added text color above
Related
I create an application in android studio and I need advice, I got one button, and I need to change the text on the second button clicks through to the first. I have a code that changes only TextView but not the text on the button.
NewText = (TextView)findViewById(R.id.textView1);
ChangeText = (Button)findViewById(R.id.ch_txt_ger);
final TextView finalNewText1 = NewText;
ChangeText.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//Set Text on button click via this function.
finalNewText1.setText(" (Frohe Weihnachten) ");
}
});
Same concept as you did for textView
Button SecondButton,ChangeText; // declaring the buttons
SecondButton = (Button)findViewById(R.id.button2);
ChangeText = (Button)findViewById(R.id.ch_txt_ger);
ChangeText.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//This changes the text on the second button
SecondButton.setText("New Text Here");
}
});
SecondButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//Do anything
}
});
Button ChangeText;
ChangeText = (Button)findViewById(R.id.ch_txt_ger);
ChangeText.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//part to change the button text
Button tmp_button = (Button)findViewById(R.id.ch_txt_ger);
tmp_button.setText("Frohe Weihnachten");
//part to change the textview text
TextView NewText
NewText = (TextView)findViewById(R.id.textView1);
finalNewText1.setText(" (Frohe Weihnachten) ");
}
});
After Clicking outlooking
Here you go: You can define a temporary button variable and make the change on it if setting the same button on its own clicking is causing problems.
And if the text will not change according to user, and if you know it like On/OFF, Red/Green you can also code it with a selector file which would make the java code look more clean.
A tiny advise: Defining the TextViews and Buttons that will get affected should all be written in the same function and close to the place where they are being changed for you to keep track of where you coded them.
I would add one thing, in case if you want to save the new button name when you close and reopen your app, you could use Shared Preferences: https://developer.android.com/training/basics/data-storage/shared-preferences.html
I have this FlowLayout where I have a set of TextView's which I build programatically. After getting the wanted names, I create a TextView for each name inside the layout.
What I want to do, if I click on the TextView, I want to move it into another layout. I manage to do that but I also want to move it back. I could also do that until I program it to, but I can't program it to be like a infinite loop.
This is a piece of code which will make you understand better what I'm talking about hopefully.
TextView tv = new TextView(new ContextThemeWrapper(getActivity(), R.style.FlowLayoutTextView));
tv.setText("Test");
tv.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
TextView tvSelected = new TextView(new ContextThemeWrapper(getActivity(), R.style.FlowLayoutTextView));
tvSelected.setText(tv.getText().toString());
tvSelected.setLayoutParams(params);
tv.setVisibility(View.GONE);
filteredLayout.addView(tvSelected);
}
});
unfilteredLayout.addView(tv);
Is it possible to make it work? Thanks.
LE: As you can see in the onClickListener event of the TextView, I create the other TextView I add in the other layout, to move it back I could also add an onClickListener event to this TextView but this is not the solution.
Try following:
boolean isInFilterLayout = false; //Class variable
TextView tv = new TextView(new ContextThemeWrapper(getActivity(), R.style.FlowLayoutTextView));
tv.setText("Test");
tv.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(isInFilterLayout){
filteredLayout.remove(tv);
unfilteredLayout.addView(tv);
isInFilterLayout = false;
}else{
unfilteredLayout.remove(tv);
filteredLayout.addView(tv);
isInFilterLayout = true;
}
}
});
unfilteredLayout.addView(tv);
public void Add_text() {
ll.setOrientation(LinearLayout.HORIZONTAL);
ll.setId(i);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
TextView product = new TextView(getActivity());
product.setText(" Product" + 5 + " ");
ll.addView(product);
EditText qty = new EditText(getActivity());
qty.setText(i + "");
qty.setId(i);
qty.setWidth(120);
ll.addView(qty);
Button btn = new Button(getActivity());
ll.addView(btn);
btn.setLayoutParams(params);
btn.setOnClickListener(o);
ly.addView(ll);
i++;
}
I wrote the above code to create the textfields and buttons dynamically; But now I need to remove 2 textfields and a button when the button is clicked. How do I do that?
Try following code.
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
LinearLayout linearParent = (LinearLayout) v.getParent().getParent();
LinearLayout linearChild = (LinearLayout) v.getParent();
linearParent.removeView(linearChild);
}
});
Explanation
Here first take "GrandParent" of any view.
Then take its "Parent" view
With reference to "GrandParent" remove that "Parent" view.
this will remove all views which that "Parent" holds. As per your code, your "ll" will be "linearChild" here. And "ly" will be "linearParent" here. So whole "ll" will be removed from "ly" which you have added dynamically.
If you want to permanently remove the views you created.
OnClick(View view){
ly.removeAllViews()
}
If you do not want to permanently remove the views you created.
OnClick(View view){
ly.setVisibility(View.GONE); //This will hide the all views
qty.setVisibility(View.GONE);//This will hide the EditText qty
product .setVisibility(View.GONE);//This will hide the TextView product
}
So use appropriate code line which you want.
EDIT:
Use this code for your situation:
public void Add_text() {
ll.setOrientation(LinearLayout.HORIZONTAL);
ll.setId(i);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
TextView product = new TextView(getActivity());
product.setText(" Product" + 5 + " ");
ll.addView(product);
EditText qty = new EditText(getActivity());
qty.setText(i + "");
qty.setId(i);
qty.setWidth(120);
ll.addView(qty);
Button btn = new Button(this);
ll.addView(btn);
btn.setLayoutParams(params);
ly.addView(ll);
i++;
btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View button) {
qty.setVisibility(View.GONE);//This will hide the EditText qty
product .setVisibility(View.GONE);//This will hide the TextView product
}
});
}
i think you got to use this method on your LinearLayout :
public void removeView (View view)
first you call :
EditText et = (EditText)linearLayout.findViewById(yourEditText.getId());
then call the remove view method :
linearLayout.removeView (et) ;
and to remove all of the Views that are in the LinearLayout do the following :
public void removeAllViews ()
like the following :
linearLayout.removeAllViews()
and give me some feedback
Hope that Helps .
you can simply use qty.setVisibility(View.GONE) on the onClickListener() of the Button of your choice. like this.
btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
qty.setVisibility(View.GONE); //for temporary purpose
//or u can also do this
layout.removeView(qty); //removes permanently
}
});
The benefit of using View.GONE is that you can get the View back if you want but layout.removeView(qty) will remove the view permanently and you have to re add the view again.
[EDIT] 1. changed to View.GONE instead of View.INVISIBLE because of reasons explained here
Hope I answered your question. :)
just use index for which you want to remove your view from linear layout
Linearlayout.removeViewAt();
if you want again that view then you can call addViewAt()in same way.
I hope it will help you.
Add this line
mLayout.removeViewAt(mLayout.getChildCount()-1);
final LinearLayout ll=new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);
scrl.addView(ll);
Button add_btn=new Button(this);
add_btn.setText("Click to add TextViiews and EditTexts");
ll.addView(add_btn);
add_btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
//String str;
TextView tv=(TextView)findViewById(R.id.tv1);
EditText et2=new EditText(getApplicationContext());
String s=et2.getText().toString();
tv.setText(s);
ll.addView(et2);
I have created a button when i click on this button i will get edittext dynamically if i enter a value i should display the value I don't know how to display value and make use of it if suppose i want to add entered values in dynamically created edit text.
You cannot get text if you haven't added the view.Also you add textview on click of button. You can remove textview creation from onClick() and add it outside of it
EDIT(something like this):
final LinearLayout ll=new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);
scrl.addView(ll);
Button add_btn=new Button(this);
add_btn.setText("Click to add TextViiews and EditTexts");
ll.addView(add_btn);
add_btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
String s=et2.getText().toString();
tv.setText(s);
}
});
TextView tv=(TextView)findViewById(R.id.tv1);
EditText et2=new EditText(getApplicationContext());
ll.addView(et2);
I am developing an quiz based application. I wanted to know like, how can we change the questions and its options without changing the text view where the question will appear and the layout when the user clicks next button i want the same text view and layout only question and its options should change.I am new to the android so can anyone help me out ..
you can change the text of texview on click of next button like this
TextView textView=(TextView) findViewById(R.id.textview1);
Button next=(Button) findViewById(R.id.nextbutton);
next.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
textView.setText("Your Text");
}
});