如何在单个texview中将TextView更改为多个大小

Question

How to change my textview size to multi sizes when I select sample in my layout texview size should be change like this I need four different sizes, I google it I not found any solution for this so any please help me

here below my screen short

Answer 1

onClick(event you want), you can change textsize of textview you want programatically

EX: Do something like

radioButton.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {

                    text1.setTextSize(TypedValue.COMPLEX_UNIT_SP,14);
                    text2.setTextSize(TypedValue.COMPLEX_UNIT_SP,18);
                    text3.setTextSize(TypedValue.COMPLEX_UNIT_SP,22);
                    text4.setTextSize(TypedValue.COMPLEX_UNIT_SP,26);                   
                }
            });

Answer 2

Try this

you can save selected text size in shared preferece

  public void showDialog()
        {
            final CharSequence[] items={"Use device font size","Tiny","Small","Normal","Huge"};
            final CharSequence[] fontSize={"15","10","15","20","25"};
            AlertDialog.Builder builder=   new AlertDialog.Builder(this);
            builder.setTitle("Font size");
            builder.setPositiveButton("Cancel", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {

                }
            });
            int i=     sharedpreference.getInt("position", 0)  ;
            builder.setSingleChoiceItems(items,i, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    editor.remove("fontsize");
                    editor.remove("position");
                    editor.putFloat("fontsize",Float.parseFloat(fontSize[ which] .toString()));
                    editor.putInt("position", which);
                    editor.commit();
                    dialog.cancel();
                }
            });
            builder.create();
            builder.show();
        }

and size of textview set dianamically

textview.setTextSize(sharedpreference.getFloat("fontsize", 15));

Hope this helps you

Answer 3

Create a variable named int size = 12 ;

Implement onClick event of Done button of dialog interface and get which radio button is selected using if else ladder and set variable value to the size you want accordingly.

then set this size to TextView you want using text.setTextSize(size); .

It works in my case.