Я показываю веб-сайт в моем приложении, используя веб-просмотр. там мне нужно выбрать изображения из файла или с камеры. Одиночные изображения составляют около 8 Мб. Здесь я хочу выбрать несколько изображений, но загрузка занимает так много времени, так как сжать несколько изображений перед загрузкой и что я должен сделать в следующем коде , Пожалуйста, предложите мне решение. На этот же вопрос не было недавних ответов, а также приведенный код отличается от кода, который я показал здесь, поэтому не знаю, как изменить. Заранее спасибо.
public class MainActivity extends AppCompatActivity {
private static final int FILECHOOSER_RESULTCODE = 1;
private ValueCallback<Uri> mUploadMessage;
private ValueCallback<Uri[]> mUploadMessages;
private Uri mCapturedImageURI = null;
private WebView mWebView;
Context context = this;
private SwipeRefreshLayout mySwipeRefreshLayout;
private ViewTreeObserver.OnScrollChangedListener mOnScrollChangedListener;
public ValueCallback<Uri[]> uploadMessage;
//to upload file from mobile
public static final int REQUEST_SELECT_FILE = 100;
//TO CHECK INTERNET CONNECTIVITY LIVE
final static String CONNECTIVITY_ACTION = "android.net.conn.CONNECTIVITY_CHANGE";
IntentFilter intentFilter;
MyReceiver receiver;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
intentFilter = new IntentFilter();
intentFilter.addAction(CONNECTIVITY_ACTION);
receiver = new MyReceiver();
if (checkForInternet()) {
loadData();
} else {
updateUI();
}
getWindow().setFeatureInt(Window.FEATURE_PROGRESS, Window.PROGRESS_VISIBILITY_ON);
mWebView = (WebView) findViewById(R.id.webView);
mWebView.getSettings().setDomStorageEnabled(true);
mWebView.getSettings().setJavaScriptEnabled(true);
//to refresh swipe down
mySwipeRefreshLayout = (SwipeRefreshLayout) this.findViewById(R.id.swipeContainer);
//to check internet connectivity
ConnectivityManager conMgr = (ConnectivityManager) getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = conMgr.getActiveNetworkInfo();
if (netInfo == null || !netInfo.isConnected() || !netInfo.isAvailable()) {
//Toast.makeText(getApplicationContext(), "No internet connection", Toast.LENGTH_SHORT).show();
Snackbar snackbar = Snackbar.make(findViewById(android.R.id.content), "OOPS! No internet", Snackbar.LENGTH_LONG);
snackbar.show();
return;
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
CookieManager cookieManager = CookieManager.getInstance();
cookieManager.setAcceptThirdPartyCookies(mWebView, true);
}
if (Build.VERSION.SDK_INT <= 18) {
mWebView.getSettings().setSavePassword(true);
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
// chromium, enable hardware acceleration
mWebView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
} else {
// older android version, disable hardware acceleration
mWebView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
}
//to upload file
WebSettings mWebSettings = mWebView.getSettings();
mWebSettings.setSupportZoom(false);
mWebSettings.setAllowFileAccess(true);
mWebSettings.setAllowFileAccess(true);
mWebSettings.setAllowContentAccess(true);
mWebView.loadUrl("http://www.mywebsite.net/login");
mWebView.setWebChromeClient(new WebChromeClient() {
// openFileChooser for Android 3.0+
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType){
mUploadMessage = uploadMsg;
openImageChooser();
}
private void openImageChooser() {
try {
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");
mCapturedImageURI = Uri.fromFile(file);
final Intent captureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI);
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
i.putExtra(Intent.EXTRA_ALLOW_MULTIPLE,true);
Intent chooserIntent = Intent.createChooser(i, "Image Chooser");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Parcelable[]{captureIntent});
startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);
} catch (Exception e) {
e.printStackTrace();
}
}
// For Lollipop 5.0+ Devices
public boolean onShowFileChooser(WebView mWebView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) {
mUploadMessages = filePathCallback;
openImageChooser();
return true;
}
// openFileChooser for Android < 3.0
public void openFileChooser(ValueCallback<Uri> uploadMsg){
openFileChooser(uploadMsg, "");
}
//openFileChooser for other Android versions
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
openFileChooser(uploadMsg, acceptType);
}
public void onProgressChanged(WebView view, int progress) {
//Make the bar disappear after URL is loaded, and changes string to Loading...
// pDialog.show();
setProgress(progress * 100);
if (progress == 100) {
// pDialog.dismiss();
findViewById(R.id.layout_splash).setVisibility(View.GONE);
//show webview
findViewById(R.id.webView).setVisibility(View.VISIBLE);
}
//setTitle(R.string.app_name);
}
});
// To refresh on slide down
mySwipeRefreshLayout.setOnRefreshListener(
new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
mWebView.reload();
}
}
);
//To download the file from webview
mWebView.setDownloadListener(new DownloadListener() {
public void onDownloadStart(String url, String userAgent,
String contentDisposition, String mimetype,
long contentLength) {
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
super.onActivityResult(requestCode, resultCode, intent);
if(requestCode==FILECHOOSER_RESULTCODE) {
if (null == mUploadMessage && null == mUploadMessages) {
return;
}
if (null != mUploadMessage) {
handleUploadMessage(requestCode, resultCode, intent);
} else if (mUploadMessages != null) {
handleUploadMessages(requestCode, resultCode, intent);
}
}
}
private void handleUploadMessage(int requestCode, int resultCode, Intent intent) {
Uri result = null;
try {
if (resultCode != RESULT_OK) {
result = null;
} else {
// retrieve from the private variable if the intent is null
result = intent == null ? mCapturedImageURI : intent.getData();
}
} catch (Exception e) {
e.printStackTrace();
}
mUploadMessage.onReceiveValue(result);
mUploadMessage = null;
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void handleUploadMessages(int requestCode, int resultCode, Intent 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[]{mCapturedImageURI};
}
}
} catch (Exception e) {
e.printStackTrace();
}
mUploadMessages.onReceiveValue(results);
mUploadMessages = null;
}
// onstart onstop for swipe refreshlayout
@Override
protected void onStart() {
super.onStart();
mySwipeRefreshLayout.getViewTreeObserver().addOnScrollChangedListener(mOnScrollChangedListener =
new ViewTreeObserver.OnScrollChangedListener() {
@Override
public void onScrollChanged() {
if (mWebView.getScrollY() == 0)
mySwipeRefreshLayout.setEnabled(true);
else
mySwipeRefreshLayout.setEnabled(false);
}
});
}
@Override
protected void onStop() {
super.onStop();
mySwipeRefreshLayout.getViewTreeObserver().removeOnScrollChangedListener(mOnScrollChangedListener);
}
@Override
public void onBackPressed() {
if (mWebView.canGoBack()) {
mWebView.goBack();
} else {
super.onBackPressed();
}
}
//code for check internet connectivity live
@Override
protected void onResume() {
super.onResume();
registerReceiver(receiver, intentFilter);
}
@Override
protected void onPause() {
super.onPause();
unregisterReceiver(receiver);
}
// Self explanatory method
public boolean checkForInternet() {
ConnectivityManager cm =
(ConnectivityManager) this.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
return activeNetwork != null &&
activeNetwork.isConnectedOrConnecting();
}
void loadData() {
// do sth
}
void updateUI() {
// No internet connection, update the ui and warn the user
Snackbar snackbar = Snackbar.make(findViewById(android.R.id.content), "OOPS! No internet", Snackbar.LENGTH_LONG);
snackbar.show();
}
private class MyReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String actionOfIntent = intent.getAction();
boolean isConnected = checkForInternet();
if (actionOfIntent.equals(CONNECTIVITY_ACTION)) {
if (isConnected) {
loadData();
} else {
updateUI();
}
}
}
}
//code ends internet connectivity live
}