How to Show Text in Lower Case in Android

Cannot lower case button text in android studio

You could add android:textAllCaps="false" to the button.

The button text might be transformed to uppercase by your app's theme that applies to all buttons. Check themes / styles files for setting the attribute android:textAllCaps.

Check upper case,lower case, length and symbols on text change edittext

you can check password using this methods:

private static boolean hasLength(CharSequence data) {
return String.valueOf(data).length() >= 8;
}

private static boolean hasSymbol(CharSequence data) {
String password = String.valueOf(data);
return !password.matches("[A-Za-z0-9 ]*");
}

private static boolean hasUpperCase(CharSequence data) {
String password = String.valueOf(data);
return !password.equals(password.toLowerCase());
}

private static boolean hasLowerCase(CharSequence data) {
String password = String.valueOf(data);
return !password.equals(password.toUpperCase());
}

then addTextChangedListener will be like this:

pass_word.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) 
{
        }
        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            if(pass_word.getText().toString().length() > 0){

                if(hasLength(pass_word.getText().toString())){
                    check_length.setChecked(true);
                }else{
                    check_length.setChecked(false);
                }

                if(hasSymbol(pass_word.getText().toString())){
                    check_symbol.setChecked(true);
                }else{
                    check_symbol.setChecked(false);
                }

                if(hasUpperCase(pass_word.getText().toString())){
                    check_upper.setChecked(true);
                }else{
                    check_upper.setChecked(false);
                }

                if(hasLowerCase(pass_word.getText().toString())){
                    check_lower.setChecked(true);
                }else{
                    check_lower.setChecked(false);
                }
            }else{
                check_lower.setChecked(false);
                check_upper.setChecked(false);
                check_length.setChecked(false);
                check_symbol.setChecked(false);
            }
        }
        @Override
        public void afterTextChanged(Editable s) {

        }
    });

Android tab titles lowercase

As no solution worked for me, finally I solved it like this:

In my styles.xml to <style name="Base.Widget.Design.TabLayout" parent="@android:style/Theme.Holo">

i just put

 <item name="android:actionBarTabTextStyle">@style/My.TabText.Style</item>

and then below:

 <style name="My.TabText.Style" parent="@android:style/Widget.Holo.ActionBar.TabText">
    <item name="android:textAllCaps">false</item>
</style>

This is the only solution that works for me!

So the point was to add android:actionBarTabTextStyle and not tabTextAppearance

How do I include lowercase characters in the text on a button using Android API 10?

Step #1: Open app/src/main/res/values/styles.xml. This should show a stub custom theme, inheriting from a Theme.AppCompat-based theme, given your symptoms.

Step #2: Add a new <style> to that file:

<style name="MixedCaseButton" parent="Widget.AppCompat.Button">
  <item name="textAllCaps">false</item>
</style>

You will notice that this references textAllCaps. The native implementation of textAllCaps is new to API Level 14. This theme is using the backport of textAllCaps supplied by appcompat-v7, which you are using, given your symptoms.

Step #3: Add this element to your custom theme, the one that already existed in the styles.xml file:

<item name="buttonStyle">@style/MixedCaseButton</item>

This will give you an overall styles.xml file resembling:

<resources>

  <!-- Base application theme. -->
  <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
    <item name="buttonStyle">@style/MixedCaseButton</item>
  </style>

  <style name="MixedCaseButton" parent="Widget.AppCompat.Button">
    <item name="textAllCaps">false</item>
  </style>

</resources>

(though the other contents of the pre-existing style resource may vary somewhat)

Step #4: Run your app, and you will see the button appear in mixed case. Please note that this violates the Material Design aesthetic.

Replacing upper-case with upper-case and lower-case with lower-case

Actually you are replacing original text with searchText, and by using (?i) replace function works case-insensitive.

If I want to do this, I prefer to use SpannableString like bellow:

String originalText = "Your original text";
Spannable wordToSpan = new SpannableString(originalText);
originalText = originalText.toLowerCase();
searchText = searchText.toLowerCase();
int length = searchText.length();
int index = originalText.indexOf(searchText);
while (index >= 0) {
    wordToSpan.setSpan(new ForegroundColorSpan(Color.BLUE), index, index + length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    index = originalText.toLowerCase().indexOf(searchText, index + length);
}
txtV.setText(wordToSpan);

How to make com.google.android.material.button.MaterialButton text lower case

You need to set both textAllCaps and android:textAllCaps to false to disable all capitalize setting.

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