I have a programatically created RelativeLayout as shown in code below. The RelativeLayout has same width and height of an EditText and lies above the EditText. I add a programatically created TextView to it with certain width and height.
overlay = new RelativeLayout(context);
overlay.setBackgroundColor(Color.TRANSPARENT); //NO I18N
viewGroup.addView(overlay);
overlay.bringToFront();
RelativeLayout.LayoutParams lp = ((RelativeLayout.LayoutParams) overlay.getLayoutParams());
lp.width = getMeasuredWidth();
lp.height = getMeasuredHeight();
Log.d(TAG, "initOverlay: width " + lp.width + " height " + lp.height);
lp.addRule(RelativeLayout.ALIGN_BOTTOM, R.id.formulaView);
lp.addRule(RelativeLayout.RIGHT_OF, R.id.fxImg);
lp.setMargins(0, ((int) Util.dptopx(context, 1) + getTotalPaddingTop()), 0, ((int) Util.dptopx(context, 1) + getTotalPaddingBottom()));
overlay.setLayoutParams(lp);
setOverScrollMode(OVER_SCROLL_NEVER);
overlay.setOverScrollMode(OVER_SCROLL_NEVER);
overlay.requestLayout();
The first time when the TextView is added, the views are shown with specified width and height. But when i remove the TextView from RelativeLayout and add a new TextView again, the TextView is not being shown. It has zero width and height though i'm setting a width and height. What could possibly be the problem?
TextView
textview = new CustomTextView(edittext.getContext());
Editable editable = edittext.getEditableText();
String spantext = editable.subSequence(startidx, endidx).toString();
float[] location = Util.determineTextViewLocation(startidx, endidx);
textview.setText(spantext);
textview.setTextSize(TypedValue.COMPLEX_UNIT_PX, edittext.getTextSize());
textview.setX(location[0]);
textview.setY(location[1]);
textview.setLayoutParams(new ViewGroup.LayoutParams((int) location[2], (int) location[3]));
textview.setPadding(0, ((int) location[4]), 0, 0);
overlay.addView(textview);
Log.d(TAG, "width "+textview.getWidth()+" height "+textview.getHeight()+" view"+textview);
Edit: The TextView's onMeasure() method is never getting called.
Try below code :
XTextView textView= new XTextView(this);
textView.setLayoutParams(new RelativeLayout.LayoutParams(100,500));
textview.setText("Sample");
textview.setX(location[0]);
textview.setY(location[1]);
textview.setLayoutParams(lp);
overlay.addView(textview);
textview.requestLayout();
Also for overlay don't use getLayoutParams() method. Use
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
I had the same problem. What fixed it for me was to add the textview to its parent first, then post a runnable to the text view with
textView.post(new Runnable() { ... })
and then set the layout params within that runnable
I know this question is super old but just in case anyone else runs into this problem :)
Related
I've tried with below code
dTextView = new TextView(getContext());
dTextView.setText(item.getText());
dTextView.setTextSize(8);
dTextView.setTextColor(Color.BLACK);
dTextView.setLayoutParams(new RelativeLayout.LayoutParams((int) measureWidth, (int) measureHeight));
setMargin(dTextView, item);
rootView.addView(dTextView);
still, it is not exact size what I want. These things are the same for CheckBox view as well. I need to draw this view with an exact pinpoint position with size.
Try this way:
dTextView = new TextView(getContext());
dTextView.setText(item.getText());
dTextView.setTextSize(8);
dTextView.setTextColor(Color.BLACK);
RelativeLayout.LayoutParams params=new RelativeLayout.LayoutParams((int) measureWidth, (int)measureHeight));
setMargin(dTextView, item);
rootView.addView(dTextView, params);
Why do you need to do it like this.
You could create a textview component and add it programmatically to your UI with the help of ListView, Recyclerview etc.
Finally, I've created all views (Checkbox, EditText, and TextView) with exact width and height. EditText and TextView was an easy solution:
dEditText = new EditText(getContext());
dEditText.setPadding(10,5,10,5);
dEditText.setTextSize(6);
dEditText.setTextColor(Color.WHITE);
dEditText.setBackgroundColor(Color.GRAY);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
(int) measureWidth, (int) measureHeight);
dEditText.setLayoutParams(params);
rootView.addView(dEditText);
setMargin(dEditText, item,params);
// set margin of every created view
private void setMargin(View view, TagsItem item,RelativeLayout.LayoutParams layoutParams) {
layoutParams.setMargins(item.getCurrentXPos(), item.getCurrentYPos(), 0, 0);
// Apply the updated layout parameters to TextView
view.setLayoutParams(layoutParams);
}
But when I try to create CheckBox with exact width and height with this procedure it didn't create a view with exact width and height. I need to follow the below code[Need to set the background and set null for setButtonDrawable ]
int states[][] = {{android.R.attr.state_checked}, {}};
int colors[] = {Color.BLACK, Color.BLACK};
dCheckBox = new CheckBox(getContext());
CompoundButtonCompat.setButtonTintList(dCheckBox, new ColorStateList(states, colors));
dCheckBox.setChecked(item.isCheckState());
//dCheckBox.setText("");
dCheckBox.setBackgroundResource(R.drawable.check_box_selector);
dCheckBox.setButtonDrawable(null);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
(int) measureWidth, (int) measureHeight);
dCheckBox.setLayoutParams(params);
// checkBoxLayout.addView(dCheckBox);
rootView.addView(dCheckBox);
setMargin(dCheckBox, item,params);
I want to set the width of a textView programmatically. I want the width to vary with the length of the text (value) of the textView. The text of the textView must not wrap. If the text of a textView is "OLA OMO ALARE", how can I use the length of this string (13) to derive the correct value to set lp.width to, in the code below ?
LayoutParams lp = tv.getLayoutParams();
lp.width =
tv.setLayoutParams(lp);
I tried the code below, but the width was not long enough, thus text was auto wrapped in textView.
lp.width = Math.round( tv.getPaint().measureText(tv.getText().toString())) )
Thanks.
1) You have to use Rect instance for this.
2) Then you need to use this in textView's getPaint() and getTextBound() methods which allows you to put your text of the textview.
3) At the end just get width from the Rect instance.
Code is here with all the steps implemented,
I tested this and it works fine. Hope it helps.
TextView textView = new TextView(this);
textView.setText("AALAP");
Rect rect = new Rect();
textView.getPaint().getTextBounds(textView.getText().toString(), 0, textView.getText().length(), rect);
Log.d(TAG, "onCreate: width: "+rect.width());
Use the ViewGroup.LayoutParams.WRAP_CONTENT constant for this.
ViewGroup.LayoutParams params = myTextView.getLayoutParams();
params.width = ViewGroup.LayoutParams.WRAP_CONTENT;
myTextView.setLayoutParams(params);
I programmatically created a TextView in TableLayout, it automatically sets the height and width.
Can I change the height and width of the TextView manually inside the TableLayout?
Use
TableLayout.LayoutParams params = new TableLayout.LayoutParams();
params.height = HEIGHT;
params.width = WIDTH;
textView.setLayoutParams(params);
same for other parameters like margin, padding etc
Use
LayoutParams lParams = new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT, 1);
lParams.setMargins(leftMargin, topMargin, rightMargin, bottomMargin);
You can set the height and width programmatically using the following code.
TableRow.LayoutParams param = new TableRow.LayoutParams();
paramColumn1.height = TableRow.LayoutParams.WRAP_CONTENT;
paramColumn1.width = TableRow.LayoutParams.WRAP_CONTENT;
textView1.setLayoutParams(param);
You can also set other properties using this way.
I try change layout height programmatically. I have two buttons. In one button I change my layout position and second button I try to receive save position witch I was first time.
<RelativeLayout
android:id="#+id/popaplayout"
android:layout_width="fill_parent"
android:layout_height="200dp" >
This is a my layout
and in first button I wrote
RelativeLayout.LayoutParams parms = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.FILL_PARENT,
RelativeLayout.LayoutParams.FILL_PARENT);
parms.addRule(RelativeLayout.BELOW, R.id.movies_title_layout);
scrollpopap.setLayoutParams(parms);
scrollpopap.setScrollingEnabled(true);
and second button
RelativeLayout.LayoutParams rel_btn = new RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT, 300);
rel_btn.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
scrollpopap.setLayoutParams(rel_btn);
scrollpopap.setScrollingEnabled(false);
In xml file I wrote height 200dp and programmatically 300 and there are different height. How I can wrote save height in programmatically?
if anyone knows solution please help me
thanks
First convert 200 dp into pixels -
final float scale = getContext().getResources().getDisplayMetrics().density;
int pixels = (int) (200 * scale + 0.5f);
Then set programatically,
RelativeLayout.LayoutParams rel_btn = new RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT, pixels);
rel_btn.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
scrollpopap.setLayoutParams(rel_btn);
scrollpopap.setScrollingEnabled(false);
Convert DP to PX like this.
final float scale = getContext().getResources().getDisplayMetrics().density;
int px = (int) (100 * scale + 0.5f); // replace 100 with your dimensions
Set Some layout_gravity of relative layout. and Change height and width by java code.
RelativeLayout rl = (RelativeLayout) findViewById(R.id.yourId);
rl.getLayoutParams().height = px;
rl.getLayoutParams().width = px;
If you intending to change RelativeLayout height, then this help.
RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.yourId);
relativeLayout.getLayoutParams().height = 100;
relativeLayout.getLayoutParams().width = 100;
Use this
RelativeLayout layout = (RelativeLayout) findViewById(R.id.yourlayout_id);
// Gets the layout params that will allow you to resize the layout
LayoutParams params = layout.getLayoutParams();
params.height = 320;
params.width = 320;
For Kotlin Users who want to set Height & Width from Dimens file, use this:
relativeLayout.layoutParams.width = relativeLayout.context
.resources.getDimensionPixelSize(R.dimen.width)
relativeLayout.layoutParams.height = relativeLayout.context
.resources.getDimensionPixelSize(R.dimen.height)
I have ImageView. I change margins and size of ImageVew on set new bitmap. For example, user click button, I set bitmap to ImageView and change params (this is code from my own view):
RelativeLayout.LayoutParams lp = (RelativeLayout.LayoutParams) getLayoutParams();
p.leftMargin = (int) ((pw - lw) / 2f);
_topMargin = (int) ((ph - lh) / 2f);
lp.topMargin = _topMargin;
lp.width = lw;
lp.height = lh;
requestLayout();
All work. But also I want change params, if change size parent view of my ImageView. If I try use code on change params from this event - nothing todo (ImageView don't change params).
How I can fix this issue?
I see now one way: on change parent size, I don't change ImageView params, only set some internal boolean flag. After finish parent changing, I change my ImageView params. But I don't know, what parent event I need watch, after which I can change my ImageView params.
My solution.
I use this method.
RelativeLayout.LayoutParams lp = (RelativeLayout.LayoutParams) getLayoutParams();
lp.leftMargin = (int) ((pw - lw) / 2f);
_topMargin = (int) ((ph - lh) / 2f);
lp.topMargin = _topMargin;
lp.width = lw;
lp.height = lh;
setLayoutParams(lp);//<---set layout params
requestLayout();
After changing layout params you need to set it back.