How to get free size of internal/external memory in Android App?

AndroidApps/ApplicationsMobile Development

This example demonstrates how do I get the free size of internal/external memory in android app.

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"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:padding="16dp"
   android:orientation="vertical" >
   <TextView
      android:id="@+id/textView"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:textSize="24sp"
      android:textStyle="bold" />
</LinearLayout>

Step 3 − Add the following code to src/MainActivity.java

import android.os.Bundle;
import android.os.Environment;
import android.os.StatFs;
import android.util.Log;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;
public class MainActivity extends AppCompatActivity {
   TextView textView;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      textView = findViewById(R.id.textView);
      StatFs stat = new StatFs(Environment.getExternalStorageDirectory().getPath());
      long bytesAvailable;
      bytesAvailable = stat.getBlockSizeLong() * stat.getAvailableBlocksLong();
      long megAvailable = bytesAvailable / (1024 * 1024);
      textView.setText("Available Internal/External free Space: " + megAvailable + "MB");
   }
}

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 the android studio, open one of your project's activity files and click the Run Play Iconicon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen −

raja
Published on 30-Oct-2019 10:25:17
Advertisements