How to auto size textview dynamically according to the length of the text in android?

Question

I am taking data of variable sizes from the server and setting to a textView and i wanted the textview to resize according to the length of the text set.

It is given in

Answer 1

addTextChangedListener is a listener for Edit Tex. this listener watch the changes of editText and it has three different states.

EditText edt = someEditText;
edt.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        /*watch the editText on every input and changes, then mange the size by if statements and editText length*/
        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            if (edt.getText().toString().length() > 10){
                edt.setTextSize(TypedValue.COMPLEX_UNIT_SP, textSizeSmall);
            }
            else if (edt.getText().toString().length() > 5){
                edt.setTextSize(TypedValue.COMPLEX_UNIT_SP, textSizeMedium);
            }
        }

        @Override
        public void afterTextChanged(Editable s) {
        }
    });

Updated: According to question you can create a component(custom view) and extend it from AppCompatTextView name as you want; in its initialization you can add below code:

public class CustomTextView extends AppCompatTextView {
Context ctx;

public CustomTextView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    ctx = context;
    init();
}

public CustomTextView(Context context, AttributeSet attrs) {
    super(context, attrs);
    ctx = context;
    init();
}

public CustomTextView(Context context) {
    super(context);
    ctx = context;
    init();
}

public void init() {
    setOnTouchListener(null);
    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 (getText().toString().length() > 10){
                setTextSize(TypedValue.COMPLEX_UNIT_SP, textSizeSmall);
            }
            else if (getText().toString().length() > 5){
                setTextSize(TypedValue.COMPLEX_UNIT_SP, textSizeMedium);
            }
        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    });
}

}

you must use it in xml instead of the usual textView