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How to get the height and width of the android.widget.ImageView?
This example demonstrates how do I get the height and width of the android.widget.ImageView 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:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:gravity="center_horizontal" android:layout_marginTop="30dp" tools:context=".MainActivity"> <ImageView android:id="@+id/imageView" android:layout_width="match_parent" android:layout_height="200dp" android:src="@drawable/image"/> <Button android:id="@+id/btnCheckSize" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="20sp" android:textSize="12sp" android:textStyle="bold" android:text="Check ImageView size"/> <TextView android:id="@+id/textView" android:layout_marginTop="10dp" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="" android:textSize="16sp" android:textStyle="bold"/> </LinearLayout>
Step 3 − Add the following code to src/MainActivity.java
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
TextView textView;
Button button;
ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = findViewById(R.id.imageView);
textView = findViewById(R.id.textView);
button = findViewById(R.id.btnCheckSize);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
textView.setText(String.format("Size of ImageView:
Height: %s
Width: %s", String.valueOf(imageView.getWidth()), String.valueOf(imageView.getHeight())));
}
});
}
}Step 4 − Add the following code to androidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
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 
icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen –
Click here to download the project code.
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