Error: error:0308010C:digital envelope routines::unsupported

Problem:  

Error: error:0308010C:digital envelope routines::unsupported

    at new Hash (node:internal/crypto/hash:79:19)

    at Object.createHash (node:crypto:139:10)

    at module.exports (E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\webpack\lib\util\createHash.js:90:53)        

    at NormalModule._initBuildHash (E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\webpack\lib\NormalModule.js:401:16)

    at handleParseError (E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\webpack\lib\NormalModule.js:449:10)        

    at E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\webpack\lib\NormalModule.js:481:5

    at E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\webpack\lib\NormalModule.js:342:12

    at E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\loader-runner\lib\LoaderRunner.js:373:3

    at iterateNormalLoaders (E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\loader-runner\lib\LoaderRunner.js:214:10)

    at iterateNormalLoaders (E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\loader-runner\lib\LoaderRunner.js:221:10)

    at E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\loader-runner\lib\LoaderRunner.js:236:3

    at runSyncOrAsync (E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\loader-runner\lib\LoaderRunner.js:130:11)    

    at iterateNormalLoaders (E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\loader-runner\lib\LoaderRunner.js:232:2)

    at Array.<anonymous> (E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\loader-runner\lib\LoaderRunner.js:205:4)  

    at Storage.finished (E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\enhanced-resolve\lib\CachedInputFileSystem.js:55:16)

    at E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\enhanced-resolve\lib\CachedInputFileSystem.js:91:9

E:\WebPublish\MyTutorial\Learning\ReactJS\crud-app\node_modules\react-scripts\scripts\start.js:19

  throw err;

  ^

Answer:

Add below codes in package.json

"scripts": {

    "start": "react-scripts --openssl-legacy-provider start",

    "build": "react-scripts --openssl-legacy-provider build",     

   

  },

Write a program to check if a number is divisible by 3 and 5

 number = int(input("Which number do you want to check? "))

if number % 3 == 0 and number % 5 == 0:

  print("This number is divisible by 3 and 5.")

elif number % 3 == 0 and number % 5 != 0:

  print("This number is divisible by 3 but not 5.")

elif number % 3 != 0 and number % 5 == 0:

  print("This number is divisible by 5 but not 3.")  

else:

  print("This number is not divisible by 3 or 5.")

To use the code you provided to increase the touch area of an ImageButton in an Android Activity, follow these steps

 To use the code you provided to increase the touch area of an ImageButton in an Android Activity, follow these steps:

1. Copy the provided `setupTouchDelegate` method and add it to your Activity class.

```java

public class YourActivity extends AppCompatActivity {

    // Your existing code

    public void setupTouchDelegate(View parentView, ImageButton btnImgBack) {

        // The code you provided

    }

}

```

2. In your Activity's `onCreate` method, find the parent view (e.g., RelativeLayout, LinearLayout, etc.) that contains the ImageButton you want to increase the touch area for.

```java

@Override

protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView(R.layout.your_activity_layout);

    // Find the parent view

    View parentView = findViewById(R.id.parent_view_id);

}

```

3. In the same `onCreate` method, find the ImageButton you want to increase the touch area for.

```java

// Find the ImageButton

ImageButton btnImgBack = findViewById(R.id.btn_img_back_id);

```

4. Call the `setupTouchDelegate` method with the parent view and ImageButton you found in steps 2 and 3.

```java

// Use the setupTouchDelegate method to increase the touch area

setupTouchDelegate(parentView, btnImgBack);

```

Here's the complete example:

```java

public class YourActivity extends AppCompatActivity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.your_activity_layout);

        // Find the parent view

        View parentView = findViewById(R.id.parent_view_id);

        // Find the ImageButton

        ImageButton btnImgBack = findViewById(R.id.btn_img_back_id);

        // Use the setupTouchDelegate method to increase the touch area

        setupTouchDelegate(parentView, btnImgBack);

    }

    public void setupTouchDelegate(View parentView, ImageButton btnImgBack) {

        // The code you provided

    }

}

```

Make sure to replace `YourActivity`, `your_activity_layout`, `parent_view_id`, and `btn_img_back_id` with the appropriate names for your Activity and views.

===================================================================

How to increase touch area in Activity Android java?

public void IncreaseTouchArea(View parentView, ImageButton btnImgBack) {

    // Create a Rect object to store the desired touch area

    final Rect touchArea = new Rect();

    // Get the current touch area (bounds) of the button

    btnImgBack.getHitRect(touchArea);

    // Increase the touch area by the desired amount (e.g., 200dp)

    int extraPadding = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 200,getApplicationContext().getResources().getDisplayMetrics());

    touchArea.top -= extraPadding;

    touchArea.bottom += extraPadding;

    touchArea.left -= extraPadding;

    touchArea.right += extraPadding;

    // Create a TouchDelegate and set it on the parent view

    parentView.setTouchDelegate(new TouchDelegate(touchArea, btnImgBack));

}

===================================================================

Error maxTag: java.lang.RuntimeException: Can't create handler inside thread Thread[AsyncTask #5,5,main] that has not called Looper.prepare()

 The error message you are encountering, java.lang.RuntimeException: Can't create handler inside thread Thread[AsyncTask #5,5,main] that has not called Looper.prepare(), typically occurs when you try to update the UI from a background thread without using the proper mechanism.

In Android, UI updates should be performed on the main (UI) thread. In your case, it seems like you're trying to update the UI directly from the doInBackground method of an AsyncTask, which runs on a background thread.

To fix this issue, you should move the UI-related code to the onPostExecute method of the AsyncTask. This method is called on the main thread after the background processing is complete. Here's an example:

private class RFIDScanTask extends AsyncTask<Void, Void, Void> {

    @Override

    protected Void doInBackground(Void... voids) {

        // Simulate RFID scanning logic

        for (int i = 0; i < 10; i++) {

            if (isCancelled()) {

                // Break out of the loop if the task is cancelled

                break;

            }

            // Perform RFID scanning here

            // Simulate delay

            try {

                Thread.sleep(1000);

            } catch (InterruptedException e) {

                e.printStackTrace();

            }

        }

        return null;

    }

    @Override

    protected void onPostExecute(Void aVoid) {

        // RFID scanning completed

        isScanning = false;

        // Update UI from the main thread

        updateUIAfterScanning();

    }

}

private void updateUIAfterScanning() {

    runOnUiThread(new Runnable() {

        @Override

        public void run() {

            // Update UI elements here

            stopScanning();

        }

    });

}

In this example, I've introduced the updateUIAfterScanning method, which is called from the onPostExecute method. This method uses runOnUiThread to ensure that the UI updates are performed on the main thread.

Make sure to replace the stopScanning method call with the actual UI updates you want to perform after the RFID scanning is complete.

If you're not using an AsyncTask or have a different threading mechanism, the key is to ensure that any UI updates are done on the main (UI) thread.