Get Height and Width of a Layout Programmatically

Get height and width of a layout programmatically

The view itself, has it's own life cycle which is basically as follows:

• Attached

• Measured

• Layout

• Draw

So, depending on when are you trying to get the width/height you might not see what you expect to see, for example, if you are doing it during onCreate, the view might not even been measured by that time, on the other hand if you do so during onClick method of a button, chances are that by far that view has been attached, measured, layout, and drawn, so, you will see the expected value, you should implement a ViewTreeObserver to make sure you are getting the values at the proper moment.

LinearLayout layout = (LinearLayout)findViewById(R.id.YOUR VIEW ID);
ViewTreeObserver vto = layout.getViewTreeObserver(); 
vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() { 
    @Override 
    public void onGlobalLayout() { 
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
                this.layout.getViewTreeObserver().removeGlobalOnLayoutListener(this);
            } else {
                this.layout.getViewTreeObserver().removeOnGlobalLayoutListener(this);
            } 
        int width  = layout.getMeasuredWidth();
        int height = layout.getMeasuredHeight(); 

    } 
});

How to get programmatically width and height of Relative - Linear layout in android?

Well I have implemented by this way:

LinearLayout linearLayout = (LinearLayout)findViewById(R.id.layout);
ViewTreeObserver viewTreeObserver = linearLayout.getViewTreeObserver(); 
viewTreeObserver.addOnGlobalLayoutListener(new OnGlobalLayoutListener() { 
    @Override 
    public void onGlobalLayout() { 
        linearLayout.getViewTreeObserver().removeGlobalOnLayoutListener(this); 
        int width  = linearLayout.getMeasuredWidth();
        int height = linearLayout.getMeasuredHeight(); 

    } 
});

This example is for Linear layout, for Relative layout follow same process.

Hope this would help you.

Android Get height of the visible layout programmatically

Sorry for Disturb , I solved my question for getting some ideas through other answer but i see some deprecated method which is suggested to solve it.

for actionbar And tabbar height

     int tabHeight = mTabHost.getTabWidget().getHeight();
     int actionbarheight = getSupportActionBar().getHeight();//getActionbar() insted of for Api greater 13 than 

height of statusbar

public int getStatusBarHeight() { 
      int result = 0;
      int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
      if (resourceId > 0) {
          result = getResources().getDimensionPixelSize(resourceId);
      } 
      return result;
} 

 int statusbarheight = getStatusBarHeight();

for getting screen size

     Display display = getWindowManager().getDefaultDisplay(); 

    if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.HONEYCOMB_MR2)
    {

        width = display.getWidth();  // deprecated
        height = display.getHeight()- (tabHeight + actionbarheight + statusbarheight ); 
    }
    else {

        Point size1 = new Point();
        display.getSize(size1);
        width = size1.x;
        height = size1.y - (tabHeight + actionbarheight + statusbarheight);//visible layout height
    }

View's getWidth() and getHeight() returns 0

You are calling getWidth() too early. The UI has not been sized and laid out on the screen yet.

I doubt you want to be doing what you are doing, anyway -- widgets being animated do not change their clickable areas, and so the button will still respond to clicks in the original orientation regardless of how it has rotated.

That being said, you can use a dimension resource to define the button size, then reference that dimension resource from your layout file and your source code, to avoid this problem.

Get height of view programmatically when it is set to Wrap_content

Just give like

viewObj.getHeight():

Instead of this

layout.getLayoutParams().height

It will be work

Finding the Value of a Layout's Height and Width

when onCreate is executed in your Activity, the UI has not been drawn to the screen yet, so nothing has dimensions yet since they haven't been laid out on the screen.
When setContentView is called, a message is posted to the UI thread to draw the UI for your layout, but will happen in the future after onCreate finishes executing.
Posting a Runnable to the UI thread will put the Runnable at the end of the message queue for the UI thread, so will be executed after the screen has been drawn,thus everything has dimensions. (that's why you got a NullPointerException from Niza Siwale answer)

btn.post(new Runnable() {
        @Override
        public void run() {
            TableLayout myTableLayout = findViewById(R.id.idOfTheTableLayout);
            int width = myTableLayout.getWidth();
            int height = myTableLaout.getHeight();

            ViewGroup.LayoutParams params = btn.getLayoutParams();
            params.height = height;
            params.width = width;
            btn.setLayoutParams(params);
        }
}

hope it works.

How to get correct height of Linear layout programmatically?

first of all you need a method to convert px to dp :

public float convertPixelsToDp(float px, Context context){
    return px / ((float) context.getResources().getDisplayMetrics().densityDpi / DisplayMetrics.DENSITY_DEFAULT);
}

then you can get height of your LinearLayout like this and show that in a Toast:

final LinearLayout layout = findViewById(R.id.container);

    ViewTreeObserver vto = layout.getViewTreeObserver();
    vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {
            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
                layout.getViewTreeObserver().removeGlobalOnLayoutListener(this);
            } else {
                layout.getViewTreeObserver().removeOnGlobalLayoutListener(this);
            }
            int width  = layout.getMeasuredWidth(); // this method return px value
            int height = layout.getMeasuredHeight(); // this method return px value

            Toast.makeText(MainActivity.this, "height is : " + convertPixelsToDp(height, MainActivity.this), Toast.LENGTH_LONG).show();
        }
    });

How can I set layout height and width programmatically which support all screen size in Android?

You can get the device density like this:

float scaledDensity = getResources().getDisplayMetrics().scaledDensity;
LinearLayout.LayoutParams params=new LinearLayout.LayoutParams(20 * scaledDensity,20 * scaledDensity);
        param1.weight=1;

How to get height of Layout, fiiled with elements programmatically

It takes some time for the linear layout to measure, pass to its children & correctly get its height. So you have to wait until its complete. Here is the code

TRIED IT & WORKING: JAVA CODE

    linearLayout.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {

            int height = linearLayout.getMeasuredHeight();

            if( Build.VERSION.SDK_INT > 15){
                linearLayout.getViewTreeObserver().removeOnGlobalLayoutListener(this);
            } else {
                linearLayout.getViewTreeObserver().removeGlobalOnLayoutListener(this);
            }
        }
    });

You set-up a listener for the layout, after getting the height, unregister the GlobalOnLayoutListener

You can either use linearLayout.getHeight() or linearLayout.getMeasuredHeight(). Both provided the same values in my test

XAMARIN CODE

  ViewTreeObserver vto = _linearLayout.ViewTreeObserver;       
  vto.GlobalLayout += (sender, args) => {      
    var ht = linearLayout.Height;
   };

How to get height in pixels of LinearLayout with layout_weight

try with ll.getHeight() should work

if not, it's because android has not yet calculed its bounds, then:

//inside of onCreate method should work
ll.post(new Runnable() {
    @Override
    public void run() {
        //maybe also works height = ll.getLayoutParams().height;

        height  = ll.getHeight();

    }
});

---

Related Topics