I have no idea why this doesn't work. The TextView is defined from an tag in the view. The base TextView doesn't have text set and I want to set it in the View on display.
I have tried placing the below in onCreate and onStart but it doesn't seem to work. The last two lines are just for debugging. I can verify that the header does get the text. The thing is, the TextView doesn't actually get updated. Any ideas?
TextView header=(TextView) findViewById(R.id.acheader);
header.setText(R.string.accounts);
header.invalidate();
header=(TextView) findViewById(R.id.acheader);
String blah=(String) header.getText();
Try again removing the text in 4th line
header=(TextView) findViewById(R.id.acheader);
header.invalidate() is not needed.
Instead of String blah = (String) header.getText() try
String blah = heager.getText().toString();
And why are you verifying a "setText()" on text view using code? Why can't you check the
actual output?
The above code might not work the way you are trying to use it, because the redraw of text view is handled by the framework and generally it tries to group item updates (Dirty rectangles to be specific) and update them all at once. It may do it well after your function exits, Try to validate visually, thats the best way.
Related
Since we don't have to cast anymore, I expected findViewById to return the correct type, but it doesn't seem to do that. I'm obviously making a very simple mistake here, can you point it out?
I have a TextView's ID (since I created it dynamically) and want to change the text size of that item, this snippet works fine:
TextView tmpView = findViewById(chain.getIngredientNameId());
tmpView.setTextSize(8);
But this one doesn't:
findViewById(chain.getIngredientNameId()).setTextSize(8);
So I assume I have to case it to TextView but none of my attempts seems to work (using () or <>), what obvious thing am I missing?
You should cast it if do not save to variable.
TextView tmpView = findViewById(chain.getIngredientNameId()); //TextVeiw
((TextView) findViewById(chain.getIngredientNameId())).setTextSize(8); // TextVeiw
findViewById(chain.getIngredientNameId()); // View
In my app I have a screen where I display some text and then a photo. The text is variable in length (sometimes none at all, sometimes a lot), so I wanted to have it set up so the text never takes up more than a few lines (but can be scrolled) leaving enough room for the image below.
My view component for this part is created programatically, and I've adjusted the code to have the following (currently in my text-setting method, but the same thing happens if it's in the initial view-create code)
public void SetDescription(String description)
{
mTxtDescription.setText(Html.fromHtml(description));
mTxtDescription.setClickable(true);
mTxtDescription.setMaxLines(5);
mTxtDescription.setLines(5); //this makes no difference either!
mTxtDescription.setSingleLine(false);
mTxtDescription.setScrollbarFadingEnabled(true);
mTxtDescription.setScrollBarStyle(VERTICAL);
mTxtDescription.setMovementMethod(ScrollingMovementMethod.getInstance());
mTxtDescription.invalidate(); //adding this made no difference...
}
However it doesn't work- long text still fills the whole screen and the image has vanished due to being pushed down to a height of 0. How can I get the text to never be more than 5 lines?
Try removing the call to setSingleLine. And use setInputType(InputType.TYPE_TEXT_FLAG_MULTI_LINE). It'd also put this call before the setMaxLines and setLines call to be sure.
Note: setLines overrides the settings of setMaxLines and setMinLines.
The TextView has many issues surrounding the various calls to how it should display multiple, ellipses, etc.
The setSingleLine(false) seemes to reset the setMaxLines command. Try to move the setSingleLine command before the setText. That worked for me.
The below code is working fine for me
txt = (TextView)findViewById(R.id.textview);
txt.setMaxLines(5);
txt.setMovementMethod(new ScrollingMovementMethod());
txt.setScrollContainer(true);
txt.setText("Example Text");
txt.setTextColor(Color.WHITE);
txt.setScrollbarFadingEnabled(true);
in xml inside textview
android:scrollbars="vertical"
I have a bunch of code in a routine that looks a bit like this:
a.setContentView(R.layout.myLayout);
textview t1 = (TextView) a.findViewById(R.id.mylayout_t1);
t1.setText("Hello")
t1.setTypeface(font);
t1.setTextColor(colour);
t1.setTextSize(fontSize);
textview t2 = (TextView) a.findViewById(R.id.mylayout_t2);
t2.setText("Hello Again")
t2.setTypeface(font);
t2.setTextColor(colour);
t2.setTextSize(fontSize);
The problem I'm having is that before when the routine is called, the layout is done with all the fonts at the default font/size/colour and then they quickly change to the specified values, which is not very pleasant on the eye.
Is there some kind of command I can add to the beginning of the routine to suspend any layout, and then another command to resume at the end of the routine?
There are two ways:
1) Put your all code (you mentioned above) in onCreate() method and at last call t1.setVisible(true);
2) Put your code in the method in which you are creating your UI (like initUI() or something like that) and call this method before setting visibility to true.
Have you considered using XML to set the text style instead of doing it programmaticly. See this Android Dve Guide page for more on this topic.
Another (bad?) way might be to use XML to set the views visibility to false and when you have made your style changes, call t1.setVisibility(true). Haven't tried this one, so it might produce a similar, unwanted result.
Let me explain:
I need to show the name of any building block either it is imagebutton, edittext in my textview field depending upon which of above written will be hover over by the user.
So that my textview could behave like some dynamic display plate.
Any help will highly be appreciated.
mrana..
So something that you can do. Since there it no "setText" for imageviews, you can do something like
String name = "imageview";
imageView.setTag(name);
Then in your onFocusedChangedListener call the following method
void displayInTextView(View selectedView) {
String viewName = (String) selectedView.getTag();
mDisplayText.setText(viewName);
}
Since this is a touch device, "hovering" will not be possible. One solution is to show the name on when long-press. See this solution https://stackoverflow.com/a/4433441/1227692
EDI: Thanks Frank and mrana for pointing out. I agree and take back my comment.
I have some TextView objects that I have onclick listeners assigned to. The onclick listeners work fine unless I run Linkify.addLinks on the TextView objects, at which point the onclick event never happens. This happens regardless of whether anything in the TextView is actually linkified. Is there a way to have both events happen, or at least be able to predict whether anything is or would be linkified in the text?
I don't know if you found an answer or not as this question is rather old, but I just found it while looking for another problem (not exactly similar) and I can help (a bit): there is an easy way to "detect" whether Linkify modifies the text: just compares it with the original. Something like:
String originalText = textView.getText().toString();
Linkify.addLinks(textView, Linkify.ALL);
String linkifiedText = textView.getText().toString();
if (originalText.equals(linkifiedText)) {
// linkify did not do anything...
}
Linkify.addLinks() returns a boolean which indicates if it found links in the text or not. There is no need to do a before/after comparison like Guillaume suggested.