newActivity.java file for starting camera/file chooser intent

newActivity.java

package io.flutter.plugins.webviewflutter;

import android.app.Activity;
import android.app.Dialog;
import android.content.ClipData;
import android.content.ComponentName;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.AssetFileDescriptor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Parcelable;
import android.provider.MediaStore;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.webkit.ValueCallback;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class newActivity extends Activity {
    private static ValueCallback<Uri[]> mUploadMessages;
    private Object Utils;
    private File outputFile;
    private Uri mOutputFileUri;
    private Uri image;

    public static void getfilePathCallback(ValueCallback<Uri[]> filePathCallback){
        mUploadMessages = filePathCallback;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

        openImageIntent();
    }


    private Uri outputFileUri;

    private void openImageIntent() {
        try {
            outputFile = File.createTempFile("tmp", ".jpg", getCacheDir());
        } catch (IOException pE) {
            pE.printStackTrace();
        }
        File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "FolderName");

        if (!imageStorageDir.exists()) {
            imageStorageDir.mkdirs();
        }
        File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");
        mOutputFileUri = Uri.fromFile(file);

        // Camera.
        final Intent captureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, mOutputFileUri);

        // Filesystem.
        final Intent fileIntent = new Intent();
        fileIntent.setType("*/*");
        fileIntent.setAction(Intent.ACTION_OPEN_DOCUMENT);
        fileIntent.addCategory(Intent.CATEGORY_OPENABLE);

        // Chooser of filesystem options.
        final Intent chooserIntent = Intent.createChooser(fileIntent, "Select Source");

        // Add the camera options.
        chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Parcelable[]{captureIntent});
        startActivityForResult(chooserIntent, 42);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
        super.onActivityResult(requestCode, resultCode, intent);
        Uri[] results = null;
        try {
            if (resultCode != RESULT_OK) {
                results = null;
            } else {
                if (intent != null) {
                    String dataString = intent.getDataString();
                    ClipData clipData = intent.getClipData();
                    if (clipData != null) {
                        results = new Uri[clipData.getItemCount()];
                        for (int i = 0; i < clipData.getItemCount(); i++) {
                            ClipData.Item item = clipData.getItemAt(i);
                            results[i] = item.getUri();
                        }
                    }
                    if (dataString != null) {
                        results = new Uri[]{Uri.parse(dataString)};
                    }
                } else {
                    results = new Uri[]{mOutputFileUri};
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        mUploadMessages.onReceiveValue(results);
        mUploadMessages = null;
        finish();
    }
}