Cannot set TextView width using setWidth or setLayoutParams

Question

NOTE: edited from original question where I was under the impression bounds had incorrect values.

I am trying to figure out the width of text programatically to create a textview that will contain my full text. I have the following code, setWidth() and setLayoutParams both don't seem to work.

    TextView textView = new TextView(getActivity());
    String text = "My text";
    textView.setText(text);
    Paint paint = new Paint();
    Rect bounds = new Rect();
    paint.setTypeface(textView.getTypeface());
    paint.setTextSize(textView.getTextSize());
    paint.getTextBounds(text, 0, text.length(), bounds);
    textView.setWidth(bounds.width());
    textView.setHeight(bounds.height());

Tried using LayoutParams, but still no luck.

ViewGroup.LayoutParams params =
    newViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 75);
textView.setLayoutParams(params);

I do see a lot of vague in your question do you want to insert textview created programmatically to add to your parent view right? — Vigneshwaran Murugesan, Jan 22 '15 at 14:05
Yes. I am trying to dynamically add `TextView` objects in to a `ScrollView` and trying to adjust the width according to the text. If the text is very long, I want to potentially reduce the font size for just those objects which exceed a max width set by me. — wislo, Jan 22 '15 at 14:26

18446744073709551615 · Answer 1 · 2015-01-22T13:53:11.393

Usually such things happen when one function uses pixels, and the other uses dpi.

But why on Earth do you need to measure the text manually? Usually people specify wrap_content in the xml.

Example:

<Button
    android:text="Press me!"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:onClick="onButton1"/>

<!--
    android:layout_width="wrap_content"
-->

PS read about View layout: http://developer.android.com/reference/android/view/View.html#Layout and try to use getMeasuredWidth() and getMeasuredHeight(); if you cannot be sure that layout has already happened,use the view tree observer http://developer.android.com/reference/android/view/View.html#getViewTreeObserver() and its callbacks.

This is for `TextViews` that I am inserting dynamically in to a `ScrollView`. However, looks like the issue is not with the bounds call. See my update to the question. — wislo, Jan 22 '15 at 13:43

score 0 · Answer 2 · edited May 23 '17 at 11:50

0

As Described Here we cannot get the bounds of the view in the OnCreateView() since the view have not been initialized you can try in OnWindowFocusChanged Method instead.

edited May 23 '17 at 11:50

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answered Jan 22 '15 at 15:42

Vigneshwaran Murugesan

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I can't seem to even set the height and width for the `TextView`. When I manually set large values, I am not seeing the size change in the UI. I am adding the `TextView` to my `ScrollView` when a `ListView` item in the layout is clicked (using `onItemClick` in my Fragment which implements `AdapterView.OnItemClickListener`) – wislo Jan 22 '15 at 19:21

Cannot set TextView width using setWidth or setLayoutParams

2 Answers2