Enable Upload Button in WebView Android App - Android Studio WebView
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Source Code
AndroidManifest.xml
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
Variables
private static String file_type = "*/*";
private String cam_file_data = null;
private ValueCallback<Uri> file_data;
private ValueCallback<Uri[]> file_path;
private final static int file_req_code = 1;
Inside onCreate Class in WebChromeClient
public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) {
if(file_permission() && Build.VERSION.SDK_INT >= 21) {
file_path = filePathCallback;
Intent takePictureIntent = null;
Intent takeVideoIntent = null;
boolean includeVideo = false;
boolean includePhoto = false;
paramCheck:
for (String acceptTypes : fileChooserParams.getAcceptTypes()) {
String[] splitTypes = acceptTypes.split(", ?+");
for (String acceptType : splitTypes) {
switch (acceptType) {
case "*/*":
includePhoto = true;
includeVideo = true;
break paramCheck;
case "image/*":
includePhoto = true;
break;
case "video/*":
includeVideo = true;
break;
}
}
}
if (fileChooserParams.getAcceptTypes().length == 0) {
includePhoto = true;
includeVideo = true;
}
if (includePhoto) {
takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(MainActivity.this.getPackageManager()) != null) {
File photoFile = null;
try {
photoFile = create_image();
takePictureIntent.putExtra("PhotoPath", cam_file_data);
} catch (IOException ex) {
Log.e(TAG, "Image file creation failed", ex);
}
if (photoFile != null) {
cam_file_data = "file:" + photoFile.getAbsolutePath();
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile));
} else {
cam_file_data = null;
takePictureIntent = null;
}
}
}
if (includeVideo) {
takeVideoIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
if (takeVideoIntent.resolveActivity(MainActivity.this.getPackageManager()) != null) {
File videoFile = null;
try {
videoFile = create_video();
} catch (IOException ex) {
Log.e(TAG, "Video file creation failed", ex);
}
if (videoFile != null) {
cam_file_data = "file:" + videoFile.getAbsolutePath();
takeVideoIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(videoFile));
} else {
cam_file_data = null;
takeVideoIntent = null;
}
}
}
Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
contentSelectionIntent.setType(file_type);
Intent[] intentArray;
if (takePictureIntent != null && takeVideoIntent != null) {
intentArray = new Intent[]{takePictureIntent, takeVideoIntent};
} else if (takePictureIntent != null) {
intentArray = new Intent[]{takePictureIntent};
} else if (takeVideoIntent != null) {
intentArray = new Intent[]{takeVideoIntent};
} else {
intentArray = new Intent[0];
}
Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);
chooserIntent.putExtra(Intent.EXTRA_TITLE, "File chooser");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);
startActivityForResult(chooserIntent, file_req_code);
return true;
} else {
return false;
}
}
Outside onCreate Class
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent){
super.onActivityResult(requestCode, resultCode, intent);
if(Build.VERSION.SDK_INT >= 21){
Uri[] results = null;
if (resultCode == Activity.RESULT_CANCELED) {
file_path.onReceiveValue(null);
return;
}
if(resultCode== Activity.RESULT_OK){
if(null == file_path){
return;
}
ClipData clipData;
String stringData;
try {
clipData = intent.getClipData();
stringData = intent.getDataString();
}catch (Exception e){
clipData = null;
stringData = null;
}
if (clipData == null && stringData == null && cam_file_data != null) {
results = new Uri[]{Uri.parse(cam_file_data)};
}else{
if (clipData != null) {
final int numSelectedFiles = clipData.getItemCount();
results = new Uri[numSelectedFiles];
for (int i = 0; i < clipData.getItemCount(); i++) {
results[i] = clipData.getItemAt(i).getUri();
}
} else {
try {
Bitmap cam_photo = (Bitmap) intent.getExtras().get("data");
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
cam_photo.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
stringData = MediaStore.Images.Media.insertImage(this.getContentResolver(), cam_photo, null, null);
}catch (Exception ignored){}
results = new Uri[]{Uri.parse(stringData)};
}
}
}
file_path.onReceiveValue(results);
file_path = null;
}else{
if(requestCode == file_req_code){
if(null == file_data) return;
Uri result = intent == null || resultCode != RESULT_OK ? null : intent.getData();
file_data.onReceiveValue(result);
file_data = null;
}
}
}
@Override
public void onConfigurationChanged(Configuration newConfig){
super.onConfigurationChanged(newConfig);
}
public boolean file_permission(){
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && (checkSelfPermission(WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_DENIED || checkSelfPermission(CAMERA) == PackageManager.PERMISSION_DENIED)) {
ActivityCompat.requestPermissions(MainActivity.this, new String[]{WRITE_EXTERNAL_STORAGE, CAMERA}, 1);
return true;
}else{
return false;
}
}
private File create_image() throws IOException{
@SuppressLint("SimpleDateFormat") String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "img_"+timeStamp+"_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
return File.createTempFile(imageFileName,".jpg",storageDir);
}
private File create_video() throws IOException {
@SuppressLint("SimpleDateFormat")
String file_name = new SimpleDateFormat("yyyy_mm_ss").format(new Date());
String new_name = "file_"+file_name+"_";
File sd_directory = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
return File.createTempFile(new_name, ".3gp", sd_directory);
}
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