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Upload Image/File From Gallery Or Camera In Webview In Android

Android Webview Logo

Android Webview is a system component used to display web pages or HTML content in an application. It is a part of the Android operating system and can be used in any Android application. Webview provides a simple way to display web pages or HTML content without the need for an external browser. In this article, we will learn how to upload an image/file from the gallery or camera in Webview in Android.

What is Webview in Android?

Android Webview

Webview is a system component of the Android operating system that allows you to embed web pages or HTML content into your Android application. It provides a way to display web content without the need for an external browser. It is built on the same technology as the Android web browser, and it supports all the same features and capabilities as the Android web browser.

How to Upload Image/File From Gallery or Camera in Webview in Android?

Upload Image File

To upload an image/file from the gallery or camera in Webview in Android, follow the steps below:

  1. Create a new Android project and add WebView in the layout file.
  2. Enable JavaScript in the WebView by calling the setJavaScriptEnabled() method.
  3. Create a JavaScript interface between WebView and Android application using the addJavascriptInterface() method.
  4. Create a file chooser method in the interface to open the gallery or camera.
  5. Override the onActivityResult() method to retrieve the selected image or file.

Step 1: Create a New Android Project and Add WebView in the Layout File

Create Android Project

To create a new Android project and add WebView in the layout file, follow the steps below:

  1. Open Android Studio and click on "Start a new Android Studio project".
  2. Fill in the project details and click on "Finish".
  3. In the activity_main.xml file, add a WebView as shown below:
<WebViewandroid:id="@+id/webview"android:layout_width="match_parent"android:layout_height="match_parent" />

Step 2: Enable JavaScript in the WebView

Enable Javascript

To enable JavaScript in the WebView, add the following code in the onCreate() method of MainActivity:

WebView webView = findViewById(R.id.webview);WebSettings webSettings = webView.getSettings();webSettings.setJavaScriptEnabled(true);

Step 3: Create a JavaScript Interface Between WebView and Android Application

Javascript Interface

To create a JavaScript interface between WebView and Android application, add the following code in the onCreate() method of MainActivity:

webView.addJavascriptInterface(new WebAppInterface(this), "Android");

This code creates a new JavaScript interface named "Android" and associates it with the WebAppInterface class.

Step 4: Create a File Chooser Method in the Interface to Open the Gallery or Camera

File Chooser

To create a file chooser method in the interface to open the gallery or camera, add the following code in the WebAppInterface class:

public void openFileChooser() {Intent intent = new Intent(Intent.ACTION_GET_CONTENT);intent.setType("*/*");startActivityForResult(Intent.createChooser(intent, "Select File"), 1);}

This code creates an intent to open the gallery or camera and allows the user to select a file. The selected file will be returned in the onActivityResult() method.

Step 5: Override the onActivityResult() Method to Retrieve the Selected Image or File

Override Onactivityresult

To override the onActivityResult() method to retrieve the selected image or file, add the following code in the MainActivity class:

@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (resultCode == RESULT_OK && requestCode == 1) {Uri uri = data.getData();webView.loadUrl("javascript:uploadFile('" + uri.toString() + "');");}}

This code retrieves the selected image or file and passes it to the uploadFile() JavaScript function in Webview.

Conclusion

Android Webview Conclusion

In this article, we learned how to upload an image/file from the gallery or camera in Webview in Android. We went through the steps to create a new Android project, add WebView in the layout file, enable JavaScript, create a JavaScript interface, create a file chooser method and override the onActivityResult() method to retrieve the selected image or file. With this knowledge, you can now implement image/file upload functionality in your Android WebView application.

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