TextView尺寸-手机和平板电脑

Question

I am familiar with setting different - different dimensions for Android Phones and Tablets

for an example I have used below dimens.xml in values:

<dimen name="text_size">18sp</dimen>

structure:

res/values/dimens.xml

res/values-small/dimens.xml

res/values-normal/dimens.xml

res/values-large/dimens.xml

res/values-xlarge/dimens.xml

Now I just want to know, Is there any logic (calculation) to give text sizes in dimens.xml for all android devices, like:

If I have provided 18sp in values/dimens.xml then how could I understand that I have to use 30sp for tablets, 14sp for small devices, 16sp for normal devices

Answer 1

Is there any logic (calculation) to give text sizes in dimens.xml for all android devices ?

You can use DisplayMetrics logic .

A structure describing general information about a display, such as its size, density, and font scaling.

  DisplayMetrics metrics = getResources().getDisplayMetrics(); int DeviceTotalWidth = metrics.widthPixels; int DeviceTotalHeight = metrics.heightPixels; 

Now

    TextView Tv_App_Title = (TextView)findViewById(R.id.App_Title);
    Tv_App_Title.setTextSize(DeviceTotalHeight/8);

Edit

Tv_App_Title.getMeasuredHeight(); //get height
Tv_App_Title.getMeasuredWidth();  // get Width

float size = TvObj.getTextSize();

public float getTextSize ()

Added in API level 1 Returns the size (in pixels) of the default text size in this TextView.

Now according to your question add logic

if(size>)
{
}
else{
}