How to get the dimensions of a view in Android?

AndroidMobile DevelopmentProgramming

There are so many cases, we should create dynamic view rather than creating view in XML. In that scenario, we should need to get the dimensions of a view. So here is a simple solution to get the dimensions of a view in android.

To get the height of any view use the following code

int width = view.getMeasuredHeight();

To get the width of any view use the following code

int height = view.getMeasuredWidth();

Before get the width and height, we should assign default measure for a view as shown below

view.measure(0, 0);

In the above code view is like either textview ,editText, button ..etc. Here is an example demonstrate about how to find dimensions of a view in android

Step 1 − Create a new project in Android Studio,go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools"
   android:id="@+id/rootview"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:orientation="vertical"
   tools:context=".MainActivity">
</LinearLayout>

In the above example we don't have any view, we have created a root view /parent view. we can add child view in java as shown below −

import android.os.Bundle;
import android.support.constraint.ConstraintLayout;
import android.support.v7.app.AppCompatActivity;
import android.view.Gravity;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
   ConstraintLayout constraintLayout;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      TextView msg = new TextView(this);
      msg.setText("sample text for checking diemnsions");
      msg.setPadding(10, 10, 10, 10);
      msg.measure(0, 0);
      LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
      params.setMargins(5, 15, 0, 0);
      msg.setLayoutParams(params);
      msg.setGravity(Gravity.CENTER);
      LinearLayout layout = (LinearLayout) findViewById(R.id.rootview);
      layout.addView(msg);
      int width = msg.getMeasuredHeight();
      int height = msg.getMeasuredWidth();
      Toast.makeText(this, "width " + String.valueOf(width) + " height " + String.valueOf(height), Toast.LENGTH_LONG).show();
   }
}

In the above example we have create a dynamic textview and added textview properties like setText(),setPadding(),SetGravity(). We given layout params for the textview as shown below.

LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
params.setMargins(5, 15, 0, 0);
msg.setLayoutParams(params);

Now we have to append text view to parent view as shown below −

LinearLayout layout = (LinearLayout) findViewById(R.id.rootview);
layout.addView(msg);

Finally we have used getMeasuredHeight(); and getMeasuredWidth(); to find the height and width of text view as shown below −

int width = msg.getMeasuredHeight();
int height = msg.getMeasuredWidth();
Toast.makeText(this, "width " + String.valueOf(width) + " height " + String.valueOf(height), Toast.LENGTH_LONG).show();

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run Play Icon  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen −

Sample Dimensions

In the above screen we got dimensions of the textview in Toast.

Click here to download the project code

raja
Published on 05-Dec-2018 17:27:32
Advertisements