Develop Reference

TextView: set Html and own SpannableStringBuilder

I have a string that contain html tags. So for set text into TextView I use:
textView.setText(Html.fromHtml(myString));
It's works good.
Also I have own method convertText() with type SpannableStringBuilder. In which method I convert text, where I have something like [text="information"]. I use next for set text:
textView.setText(convertText(myString), TextView.BufferType.SPANNABLE);
For example: myString = "<h1> This is [text="information"]. </h1>"
The result must be:
This is INFORMATION. (with h1 formatted text. caps lock of word information works in method convretText() good)
It's also works good. But how I can use these two setText approach in one time?

Hide only part of text in TextView

Good Day i want to hide some specified or certain part of text in textview!Important: Im not talking about hide the full textview with TextView.setVisibility(View.Gone) I'm not talking about transparent of TEXT in textview!im not talking about hiding full text in textview!So please help me to hide some text.
Example: lets say i have a textview with this text (10-Sporting Goods)
I want to hide the (10-) and show only Sporting Goods text.Any help will be appreciated!Thank you very much beforehand!

Although even i would appreciate for your case to strongly go with DroidWorm/Gabriella approach , just for the information of all the other folks who may see this in future.
If you really wish to hide just a portion of your textview which has the entire string in itself, you should use a SpannableString , as below:-
tvHello = (TextView) findViewById(R.id.tvHello);
SpannableString customText = new SpannableString("10-Sporting Good");
customText.setSpan(new RelativeSizeSpan(.1f), 0, 3, 0);
tvHello.setText(customText);
This code will technically HIDE the 10- from 10-Sporting Good without using a substring.

You could try to get the whole text like
String text = textView.getText().toString();
and then make substring of it like this:
String wantedSubstr = text.substring(4); //for example - everything from the 4th index to the end
then set this substring as text of your textView like this:
textView.setText(wantedSubstr);

There is one the possible solution of it is that..First you have to find the index(position) of "-" and than split the string according to it therefore use below code
String text = textView.getText().toString();
int position=text.indexOf('-');
String wantedSubstr = text.substring(position+1);
textView.setText(wantedSubstr);

Will there always been "10_" in front of it? Or will there always be 3 characters before the text you want? Or will there always be a "-" or "_" before the text you want?
If so, you could just do a simple method which takes the substring and then updates the textview. If so I can help you write a simple method

You cannot hide part of textView, instead you can make a substring of the specific string and setText using it.
Do it like:
String originalString = "10-Sporting Goods";
String subString = originalString.substring(3);
textView.setText(asubstring);

How do I prepend a String to an Android TextView?

There's TextView.append(), but that adds the text to the end of the TextView. I want what I append to go in the beginning (ie, show up on the top of the TextView box).

Have you tried this
textview.setText(" append string" + textView.getText());
Though the spannables will get lost by this method.

If you're concerned about spannables, you can use something like this:
textView.getEditableText().insert(0, "string to prepend");

The getEditableText() returned null to me. Instead, to prepend text to a spannable, I set the text buffertype to SPANNABLE:
in code:
myTextView.setText(myText, TextView.BufferType.SPANNABLE);
or using xml property android:bufferType on your TextView.
Then cast the getText() to Spannable, after which I concat the extra text with existing text:
Spannable currentText = (Spannable) tvTitle.getText();
CharSequence indexedText = TextUtils.concat(String.format("%d. ", index), currentText);
myTextView.setText(indexedText);
As far as I can tell all functions are available from API level 1.

Then use the string you want to append say "hello" to the textview as
textview.setText("hello"+textView.getText())

How to change color of a text using HTML tag in Android

I have a string which contain three words. I want to show the three words in same textview but in different line. For this I have used <br> tag. Now I want to show the last word in red color. I tried so many codes but nothing worked for me.
My code snippet is
viewHolder.cutomerinfo.setText(
customerDetail[0]+Html.fromHtml("<br>")+
customerDetail[1]+Html.fromHtml("<br>")+
Html.fromHtml("<font color='#ff0000'>")+
customerDetail[2]+Html.fromHtml("</font>"));

Do like that:
code:
String toshowstring = customerDetail[0]+customerDetail[1]+
"<font color='red'>"+customerDetail[2]+"</font>";
viewHolder.cutomerinfo.setText(Html.fromHtml(toshowstring));
That's all you want.
^-^

//only one Html.fromHtml() method is enough
viewHolder.cutomerinfo.setText(
customerDetail[0]+Html.fromHtml("<br>"+customerDetail[1]+
"<br><font color='#ff0000'>"+
customerDetail[2]+"</font>"));
for Ref:

How To capitalize the letters in AutoCompleteTextView dynamically?

I am developing the application which consists of AutoCompleteTextView,here is my problem,How I can upper case the letters entering in AutoCompleteTextView.
I Don't want in xml: android:capitalize="characters"
I want to declare in Java code.

You can try like this..In your text watcher in ontextchanged change the text to upper case..and check if the new string in edittext is the old string which you converted to upper case...in order to avoid stackoverflow error..
String upper = mytextview.getText().toString().toUpperCase()
mytextview.setText(upper);

Try this in your code there are some other flags also which you can check and try.
tv.setInputType(InputType.TYPE_TEXT_FLAG_CAP_CHARACTERS);