i am new to Android Studio . I want to increase or decrease textView's line spacing on click. currently i am using this one and it works but i want when user click than line spacing increased and decreased for - .
here is my code.
textView.setLineSpacing(0,1.1f);
i have tried this but not works
private int textSpace = (int) 1.0f;
private int diff = (int) 0.1f;
and than this
textSize = textSpace diff;
textView.setLineSpacing(0,textSize);
same for minus, but its not working , please help
CodePudding user response:
Here is a checked example. I hope everything is well described
// Here put ids of your views
TextView textView = findViewById(R.id.textView);
Button plusButton = findViewById(R.id.plus);
Button minusButton = findViewById(R.id.minus);
// The multiplier may be unchanged
final float multiplier = textView.getLineSpacingMultiplier();
// Set the appropriate offset
final float offset = 1f;
plusButton.setOnClickListener(view -> textView.setLineSpacing(textView.getLineSpacingExtra() offset, multiplier));
minusButton.setOnClickListener(view -> textView.setLineSpacing(textView.getLineSpacingExtra() - offset, multiplier));
CodePudding user response:
I suppose you want to achieve something like this:
private int textSize = 20;
button.setOnClickListerner {
textSize = diff;
textView.setLineSpacing(0, textSize);
}