I am dynamically placing views into a RelativeLayout. Currently, I am doing:
layoutParams = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
layoutParams.setMargins(0, position, 0, 0);
relativeLayout.addView(textViewInstance, layoutParams);
where position is incremented by a fixed amount after each TextView object is added to the layout. The problem is that some of the TextViews contain long strings, which makes for awkward formatting on devices with smaller screen sizes because the string will spill into multiple lines and bleed into the whitespace.
Is there any way I can add these TextViews with spacing relative to the TextView right above it? I want to achieve something to the effect of:
layoutParams = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
layoutParams.setMargins(0, previousTextViewInstance.bottomPixel + 50, 0, 0);
relativeLayout.addView(textViewInstance, layoutParams);
where previousTextViewInstance will be saved after each new TextView is added.
Is this possible?
Instead of setting margin for each view, you can dynamically add each view below the previous one in relative layout.
For that, first set an id for each of your textView.
firstTextView.setId(textView_id_1);
while adding second textView, set rule for layout params as:
layoutParams.addRule(RelativeLayout.BELOW, textView_id_1);
secondTextView.setLayoutParams(layoutParams);
secondTextView.setId(textView_id_2);
Related
I have a textview view whose width doesn't cover all the parent's width. I have used valueTV.setGravity(Gravity.CENTER_HORIZONTAL);
and it puts the text in center of textview.
Now I want to take the whole textview in the center of the parent ( which apparently covers the whole scrren). How can it be done programatically. I want to align the textview to center.Basically I know a lot of questions have already been asked which are quite similar to this but not exactly the same as they didnot solve my problem.
// Make sure textview width match parent
// Use param: ViewGroup.LayoutParams.MATCH_PARENT
LinearLayout.LayoutParams layoutParams =
new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
// Make sure text is center
layoutParams.gravity = Gravity.CENTER_HORIZONTAL;
linearLayout.addView(valueTV, layoutParams);
Hmmm... Try this perhaps
TextView tv = findViewById(R.id.yourTextView);
LinearLayout.LayoutParams layoutParams =
(LinearLayout.LayoutParams)tv.getLayoutParams();
layoutParams.gravity = Gravity.CENTER_HORIZONTAL;
tv.setLayoutParams(layoutParams);
I am currently doing an android application that contains a popup window named as mypopup. It contains a Image button and four textviews. i want to align the popup window dynamically with margin top,margin bottom,margin left and margin right parameters..In my code setmargin method is not working..please anybody help me to do this...
It depends that which layout you are using. Below example places a RelativeLayout in a LinearLayout.
LinearLayout linearLayoutParent;
RelativeLayout relativeLayout;
RelativeLayout.LayoutParams margin = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
margin.setMargins(0, 0, 0, 7); //7px bottom margin
//create the linear and the relative layouts
//...add other stuff here...
// Add view with its margins
linearLayoutParent.addView(relativeLayout, margin);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
lp.setMargins(0,0, 5, 0);
I'm extending a LinearLayout to make a compound widget. The widget is set to layout_width="MATCH_PARENT".
mLabelTextView = new TextView(context);
mLabelTextView.setText("Testing");
LayoutParams labelParams = new
LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT, 0.0f);
labelParams.gravity = Gravity.CENTER_VERTICAL;
addView(mLabelTextView, labelParams);
mContentView = new Checkbox(content);
contentParams = new LinearLayout.LayoutParams(0, LayoutParams.WRAP_CONTENT, 1.0f);
contentParams.gravity = Gravity.CENTER_VERTICAL | Gravity.Right;
addView(mContentView, contentParams);
My problem is that the Gravity.Right property is taking effect on mContentView, but Gravity.CENTER_VERTICAL is. I know that mContentView is getting stretched to fill the remaining space. I've already tried just getting gravity=right by itself and that didn't work.
I have a similar code path in which I inflate a view that already has right gravity set in XML and that is working. So I must be missing something somewhere.
If your parent LinearLayout has horizontal orientation (which you don't specify, but I'm guessing), then it will ignore all horizontal layout gravity bits. Likewise, if it has vertical orientation, then it would have ignored the CENTER_VERTICAL setting.
One trick is to wrap mContentView in a vertically oriented LinearLayout, give that wrapper a layout weight of 1 (so it fills the remaining space) and then the wrapper will honor the RIGHT gravity.
A better alternative might be to extend RelativeLayout instead of LinearLayout. That gives you 2-D control over gravity (unlike LinearLayout).
I am developing an app that creates a dynamic interface according to a string set by the user.
The only thing I've got in my XML file, is a ScrollView, the rest is in java code:
ScrollView sv = (ScrollView)findViewById(R.id.sv);
LinearLayout ll = new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);
TableLayout tl = new TableLayout(this);
TableRow[] tr = null;
Then I decipher a string, which will tell me how many buttons I need to add. Next to each Button should be a TextView. In a for-loop, I create the Buttons and the TextViews and add them to the TableRow, which I add to the TableLayout, which I add to the LinearLayout which I add to the ScrollView.
My problem is: I want the Buttons to be, say 200dp wide, followed by the TextView, but currently it takes the width from WRAP_CONTENT. Setting the size of the Button with RelativeLayout and setLayoutParams, does not work when I add it to the TableRow.
final float scale = getBaseContext().getResources().getDisplayMetrics().density;
int pixels = (int) (200 * scale + 0.5f);
RelativeLayout.LayoutParams rel_btn = new RelativeLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
rel_btn.height = pixels;
rel_btn.width = pixels;
btn.setLayoutParams(rel_btn);
tr[i].addView(btn);
tr[i].addView(tv);
tl.addView(tr[i]);
Does anyone have an idea on how to fix my problem with the TableLayout?
I've read that nested LinearLayouts might be a different approach, but I cant seem to find any java examples, only XML - and I need it to be dynamic.
What is the reason for using RelativeLayout.LayoutParams when your Button and TextView are the children of a TableRow? It should be like this:
TableRow.LayoutParams rel_btn = new TableRow.LayoutParams(pixels, pixels);
btn.setLayoutParams(rel_btn);
Also, do you really need the LinearLayout that wraps the TableLayout? If you're not using that LinearLayout for something else you should remove it to improve the views hierarchy.
I have a LinearLayout class in which I have:
TexView | ImageView | EditText | ImageView.
I have the last ImageView all the way to the right side of the LinearLayout its wrapped in. The EditText runs very long and in some case pushes the last ImageView out of view (or so it seems to push it out of view).
I want to to have the EditText set to a percentage of the total width. I tried using weight with LinearLayout parameters but it seems to cause the view to get all out of wack. For example here it is for the EditText:
LinearLayout.LayoutParams lpEt = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT,
.50f);
All the other views follow suit but have lesser weights (.2, .2, .1) and they all add up to 1.0. But the LinearLayout row is never spaced correctly.
Should I find out the width of the parent (which is a ListView) and then set the width of the EditText explicitly based on the parent's width or is there a better way?
Im not sure what your linear layout orientation is but im guessing its horizontal. if so try this.
LayoutParams textViewParams = new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
textView.setLayoutParams(textViewParams);
LinearLayout.LayoutParams editTextParams = new LinearLayout.LayoutParams(
0,LayoutParams.WRAP_CONTENT,1f);
editText.setLayoutParams(editTextParams);
LayoutParams imageViewParams = new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
imageView.setLayoutParams(imageViewParams);
This will make the edit text to fill the remaining space between the textview and imageview. If you need something else, just modify the code a bit. When using weights, set the weight or height as 0 for which you are setting weight for.