I am trying to put a linearlayout vertical inside the linear layout programmatically, but it seems that its not working, the buttons doesnt appear, but the text view appear...
Here is my code:
(this is for a dialog..)
LinearLayout titleLayout = new LinearLayout(m_context);
titleLayout.setOrientation(LinearLayout.VERTICAL);
m_titleView = new TextView(m_context);
m_titleView.setText(title);
LinearLayout horizontalLayout = new LinearLayout(m_context);
titleLayout.setOrientation(LinearLayout.HORIZONTAL);
Button backward = new Button(m_context);
backward.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
backward.setText("Backwards");
Button newDirButton = new Button(m_context);
newDirButton.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
newDirButton.setText("New folder");
horizontalLayout.addView(backward);
horizontalLayout.addView(newDirButton);
titleLayout.addView(m_titleView);
titleLayout.addView(horizontalLayout);
Thanks in advance!
Try setting LayoutParams on horizontalLayout.
Anyway, I'd suggest moving to xml world, as this code is not maintainable.
Edit:
Answer found by the author:
titleLayout.setOrientation(LinearLayout.HORIZONTAL);
should be:
horizontalLayout.setOrientation(LinearLayout.HORIZONTAL);
Related
I've tried with a piece of code but it is not displaying vertical scroll bar. my code is pasted below:
public void init() {
popupButton = (Button) findViewById(R.id.textview1);
popupText = new TextView(this);
insidePopupButton = new Button(this);
layoutOfPopup = new LinearLayout(this);
LinearLayout lt=new LinearLayout(this);
view=new ScrollView(this);
insidePopupButton.setText("OK");
popupText.setText("This is Popup Window.press OK to dismiss it.");
popupText.setBackgroundColor(Color.WHITE);
popupText.setPadding(0, 0, 0, 20);
layoutOfPopup.setOrientation(1);
lt.addView(popupText);
layoutOfPopup.addView(insidePopupButton,350,35);
layoutOfPopup.setBackgroundColor(Color.BLACK);
view.addView(lt);
layoutOfPopup.addView(view);
Thank you in advance..:)
ScrollView cannot be combine with popupWindow in android, no matter what. Sad but true.
You need to add your views in this way:
LinearLayout linearLayout = new LinearLayout(this);
// add all your views to linearLayout(or RelativeLayout)
linearLayout.addView(popupText);
linearLayout.addView(insidePopupButton);
// add linearLayout to ScrollView instance
view.addView(linearLayout);
// add ScrollView instance to main layout
layoutOfPopup.addView(view);
ScrollView is a single element container.
I'm trying to merge two LinearLayouts like this:
ViewGroup.LayoutParams lp = new ViewGroup.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
main.addView(namnLL,lp);
hscrolla.addView(ll_scrolla,lp);
scrolla.addView(hscrolla,lp);
main.addView(scrolla,lp);
setContentView(main, lp);
However, when I run the app, only the first "main" is visible.
Does anyone know what I've done wrong?
Edit: Here's some additional code:
LinearLayout main = new LinearLayout(this);
main.setOrientation(LinearLayout.HORIZONTAL);
LinearLayout ll_scrolla=new LinearLayout(this);
ScrollView scrolla=new ScrollView(this);
HorizontalScrollView hscrolla=new HorizontalScrollView(this);
LinearLayout namnLL = new LinearLayout(this);
LinearLayout textrutaView = new LinearLayout(this);
textrutaView.setOrientation(LinearLayout.VERTICAL);
//Everything named something with "tv" are TextViews
namnLL.addView(tvNamn,lp);
textrutaView.addView(tv1,lp);
textrutaView.addView(tv2,lp);
textrutaView.addView(tv3,lp);
textrutaView.addView(tv4,lp);
textrutaView.addView(tv5,lp);
namnLL.addView(namnTV);
ll_scrolla.addView(textrutaView);
change the LinearLayout orientation in VERTICAL, in this way:
main.setOrientation(LinearLayout.VERTICAL);
default it is HORIZONTAL
I need to create a button programatically and have it centered on the layout, both horizontally and vertically. I am trying with the following code:
LinearLayout ll = (LinearLayout)findViewById(R.id.layoutItem);
Button b = new Button(this);
b.setBackgroundDrawable(getResources().getDrawable(R.drawable.button));
b.setLayoutParams(new LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT));
b.setGravity(Gravity.CENTER_HORIZONTAL|Gravity.CENTER_VERTICAL);
ll.addView(b);
But it's not working. The button comes out on top all to the left.
Any clues on how to fix this?
I would do something like:
LinearLayout.LayoutParams ll = (LinearLayout.LayoutParams)b.getLayoutParams();
ll.gravity = Gravity.CENTER;
b.setLayoutParams(ll);
see if that works.
Or you can use a RelativeLayout as your parent View and do the following:
this.testButton= (Button) this.findViewById(R.id.testButton);
RelativeLayout.LayoutParams testLP = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
testLP.addRule(RelativeLayout.CENTER_IN_PARENT);
this.testButton.setLayoutParams(testLP);
You can set several rules for the RelativeLayout.
I have one table "TABLE_SUBJECT" which contain a number of subjects. I need to create
one horizontal scroll view with Subject.
How do I create a ScrollView with database items programmatically? If I enter 1o subject then it will be appear in scroll view as a button. Is it possible?
you may create it as below:
ScrollView scroll = new ScrollView(context);
scroll.setBackgroundColor(android.R.color.transparent);
scroll.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT));
scroll.addView(yourTableView);
if you have many elements first you need to wrap-up and add in the Scroll view; for example i need a many text view inside of scrollview, so you need to create ScrollView->LinearLayout->Many textview
ScrollView scrollView = new ScrollView(context);
scrollView.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
TextView textView = new TextView(context);
textView.setText("my text");
LinearLayout linearLayout = new LinearLayout(context);
linearLayout.setOrientation(LinearLayout.VERTICAL);
linearLayout.setGravity(Gravity.RIGHT);
linearLayout.addView(textView);
scrollView.addView(linearLayout);
this may help you.
HorizontalScrollView hsrll = (HorizontalScrollView)findViewById(R.id.hrsll);
b = new Button(this);
for (int i = 0; i < 5; i++) {
b.setWidth(LayoutParams.WRAP_CONTENT);
b.setHeight(LayoutParams.WRAP_CONTENT);
b.setText("b"+i);
b.setId(100+i);
hsrll.addView(b);
}
instead of for loop just modify the code as your need(no of records in db). but this the code for creating buttons in dynamically.
I was doing it like this:
Create xml with LinearLayout inside the ScrollView
Create xml as item in ScrollView
In activity set main content as xml with ScrollView
Loop through all table elements with adding new View to LinearLayout form main view
For me works fine.
In Kotlin you can use the below code
val scroll = ScrollView(context)
scroll.setBackgroundColor(R.color.transparent)
scroll.layoutParams = LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT
)
scroll.addView(yourTableView)
I' m at this point stuck : I want to have a scrollview + a fixed button at the bottom, but Programatically Way ! I can' t go with XML for some technical reason.
Actually i have this :
//Is it really usefull Relative View?
RelativeLayout layout = new RelativeLayout(this);
ScrollView sv = new ScrollView(this);
sv.setId(2);
// What is it? RelativeLayout.LayoutParams?
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
lp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, sv.getId());
sv.setLayoutParams(new ViewGroup.LayoutParams(480, 800));
layout.addView(saveButton, lp);
layout.addView(sv);
I do the first 3 page Google on "fixed button and scrollview Android programatically"
Im beginner on Android, so, don' t hesitate to comment on my code some hints ;)
Thx for your help.
try this
LinearLayout layout = new LinearLayout(this);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT);
layout.setOrientation(LinearLayout.VERTICAL);
layout.setLayoutParams(lp);
ScrollView scroll = new ScrollView(this);
LinearLayout.LayoutParams slp = new LinearLayout.LayoutParams(
LayoutParams.FILL_PARENT,0, 1.0f);
scroll.setLayoutParams(slp);
Button btn = new Button(this);
ViewGroup.LayoutParams blp = new ViewGroup.LayoutParams(
LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT);
btn.setLayoutParams(blp);
btn.setText("Click Me");
layout.addView(scroll);
layout.addView(btn);
setContentView(layout);
If you are trying to create a view where the upper portion of the screen is a scrolling list, and the bottom portion is a button, put the scrollview inside a linearlayout, and put the button in the linearlayout below the scrollview.
http://developer.android.com/reference/android/widget/LinearLayout.html