How to enable image upload in webview using AIDE

To enable uploading image from webview in android app, follow the steps given below.

1. Open your project in AIDE app. If you are using Sketchware, export source code and then decompress it in a folder. Open the folder containing decompressed code using AIDE.

2. In app level build.gradle file, add the following library to dependencies:
compile 'com.android.support:appcompat-v7:+'

In MainActivity.java

3. Import the following:

import android.annotation.SuppressLint;
import android.provider.MediaStore;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import java.io.File;
import java.io.IOException;

4. Add the following code after the line private webview webview1;

private static final String TAG = MainActivity.class.getSimpleName();
    private String mCM;
    private ValueCallback <Uri> mUM;
    private ValueCallback <Uri[]> mUMA;
    private final static int FCR=1;

5. Add the following code before onCreate event:

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent intent){
        super.onActivityResult(requestCode, resultCode, intent);
        if(Build.VERSION.SDK_INT >= 21){
            Uri[] results = null;
            //Check if response is positive
            if(resultCode== Activity.RESULT_OK){
                if(requestCode == FCR){
                    if(null == mUMA){
                        return;
                    }
                    if(intent == null){
                        //Capture Photo if no image available
                        if(mCM != null){
                            results = new Uri[]{Uri.parse(mCM)};
                        }
                    }else{
                        String dataString = intent.getDataString();
                        if(dataString != null){
                            results = new Uri[]{Uri.parse(dataString)};
                        }
                    }
                }
            }
            mUMA.onReceiveValue(results);
            mUMA = null;
        }else{
            if(requestCode == FCR){
                if(null == mUM) return;
                Uri result = intent == null || resultCode != RESULT_OK ? null : intent.getData();
                mUM.onReceiveValue(result);
                mUM = null;
            }
        }
    }

    @SuppressLint({"SetJavaScriptEnabled", "WrongViewCast"})


6. Add following code in private void initialize() method, just before closing bracket } :

webview1.setWebChromeClient(new WebChromeClient(){
public boolean onShowFileChooser(
WebView webView, ValueCallback <Uri[]> filePathCallback,
WebChromeClient.FileChooserParams fileChooserParams){
if(mUMA != null){
mUMA.onReceiveValue(null);
}
mUMA = filePathCallback;
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if(takePictureIntent.resolveActivity(MainActivity.this.getPackageManager()) != null){
File photoFile = null;
try{
photoFile = createImageFile();
takePictureIntent.putExtra("PhotoPath", mCM);
}catch(IOException ex){
Log.e(TAG, "Image file creation failed", ex);
}
if(photoFile != null){
mCM = "file:" + photoFile.getAbsolutePath();
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile));
}else{
takePictureIntent = null;
}
}
Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
contentSelectionIntent.setType("image/*");
Intent[] intentArray;
if(takePictureIntent != null){
intentArray = new Intent[]{takePictureIntent};
}else{
intentArray = new Intent[0];
}

Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);
chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);
startActivityForResult(chooserIntent, FCR);
return true;
}
});

This code enables only image upload. In order to enable upload of all types of files, in the code above, replace
contentSelectionIntent.setType("image/*");
With
contentSelectionIntent.setType("*/*");

7. Add following code just before private void initializeLogic() method:

private File createImageFile() throws IOException{
@SuppressLint("SimpleDateFormat") String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "img_"+timeStamp+"_";
File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
return File.createTempFile(imageFileName,".jpg",storageDir);
}

8. Save and check for errors. Run the project if there are no errors.