Develop Reference

How to disable Copy but enable Paste in a WebView?

I am using a WebView to show my website on my mobile Android app. I have disabled text selection in the WebView as I want to disable Copy.
I actually wish to allow the user to Paste a text but not Copy.
How can I do that please ?
public class MainActivity extends AppCompatActivity {
WebView webview;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
webview = findViewById(R.id.webView);
webview.setWebViewClient(new WebViewClient(){
public boolean shouldOverrideUrlLoading(WebView view, String url) {
String host = Uri.parse(url).getHost();
String domain = "www.google.fr";
if (host.equals(domain)) {
// This is my website, so do not override; let my WebView load the page
return false;
} else {
view.getContext().startActivity(
new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
return true;
}
}
});
webview.setOnLongClickListener(new View.OnLongClickListener() {
#Override
public boolean onLongClick(View v) {
return true;
}
});
WebSettings webSettings = webview.getSettings();
webSettings.setJavaScriptEnabled(true);
webview.loadUrl("https://www.google.fr");
}
#Override
public void onBackPressed() {
if (webview.canGoBack()) {
webview.goBack();
}
}
}

As you know to copy a text you need to long press it to select.
So please add a longClickListener to the webview which will show anything else on long click instead of copying the text.
mWebView.setOnLongClickListener(new OnLongClickListener() {
#Override
public boolean onLongClick(View v) {
return true;
}
});
mWebView.setLongClickable(false);
But this will also disable using PASTE so to paste content from clipboard. I will suggest add a small button beside it and add an onClickListener to it which will paste the copied content to wherever you want.
ClipboardManager mClipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
String pasteData = "";
if (!(mClipboard.hasPrimaryClip())) {
} else if (!(mClipboard.getPrimaryClipDescription().hasMimeType(MIMETYPE_TEXT_PLAIN))) {
} else {
ClipData.Item item = mClipboard.getPrimaryClip().getItemAt(0);
copiedText = item.getText().toString();
}

Can't see image and contents page in webview android on real Device

I have writing one app with WebView. My problem is the page can't load in real device. When I had run on an emulator, that page can see all images and contents. My code is looked like below.
My Activity
public class MyActivity extends AppCompatActivity {
private WebView myWebView;
private static final String TAG = "TaoBao";
//private ProgressDialog progressDialog;
FloatingActionMenu materialDesignFAM;
FloatingActionButton floatingActionButton1, floatingActionButton2;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.web_view);
// webview
myWebView = (WebView) findViewById(R.id.activity_webview);
final WebSettings webSettings = myWebView.getSettings();
//webSettings.setSupportMultipleWindows(true);
//webSettings.setJavaScriptCanOpenWindowsAutomatically(true);
myWebView.getSettings().setRenderPriority(WebSettings.RenderPriority.HIGH);
webSettings.setLoadWithOverviewMode(true);
webSettings.setUseWideViewPort(true);
if (Build.VERSION.SDK_INT >= 21) {
webSettings.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
}
webSettings.setJavaScriptEnabled(true);
// set javascript and zoom and some other settings
webSettings.setBuiltInZoomControls(true);
webSettings.setDisplayZoomControls(false);
webSettings.setAppCacheEnabled(true);
webSettings.setDatabaseEnabled(true);
webSettings.setDomStorageEnabled(true);
webSettings.setUseWideViewPort(true);
webSettings.setLoadWithOverviewMode(true);
myWebView.getSettings().setAllowFileAccess(true);
myWebView.getSettings().setAllowContentAccess(true);
myWebView.setScrollbarFadingEnabled(false);
// enable all plugins (flash)
webSettings.setPluginState(WebSettings.PluginState.ON);
// Floating Menu
materialDesignFAM = (FloatingActionMenu) findViewById(R.id.material_design_android_floating_action_menu);
floatingActionButton1 = (FloatingActionButton) findViewById(R.id.material_design_floating_action_menu_item1);
floatingActionButton2 = (FloatingActionButton) findViewById(R.id.material_design_floating_action_menu_item2);
final AlertDialog alertDialog = new AlertDialog.Builder(this).create();
final ACProgressFlower progressDialog = new ACProgressFlower.Builder(this)
.direction(ACProgressConstant.DIRECT_CLOCKWISE)
.themeColor(Color.WHITE)
.text("Loading...")
.fadeColor(Color.DKGRAY).build();
progressDialog.show();
myWebView.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Log.i(TAG, "Processing webview url click...");
// if( URLUtil.isNetworkUrl(url) ) {
// return false;
// }
// if (appInstalledOrNot(url)) {
// Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
// startActivity( intent );
//} else {
// do something if app is not installed
// }
// return true;
view.loadUrl(url);
return false;
}
public void onPageFinished(WebView view, String url) {
Log.i(TAG, "Finished loading URL: " + url);
super.onPageFinished(view, url);
if (progressDialog.isShowing()) {
progressDialog.dismiss();
}
}
public void onReceivedError(WebView webView, int errorCode, String description, String failingUrl) {
try {
webView.stopLoading();
} catch (Exception e) {
}
if (webView.canGoBack()) {
webView.goBack();
}
webView.loadUrl("about:blank");
AlertDialog alertDialog = new AlertDialog.Builder(TaoBao.this).create();
alertDialog.setTitle("Error");
alertDialog.setMessage("Check your internet connection and try again.");
alertDialog.setButton(DialogInterface.BUTTON_POSITIVE, "Try Again", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
finish();
startActivity(getIntent());
}
});
alertDialog.show();
super.onReceivedError(webView, errorCode, description, failingUrl);
}
});
myWebView.loadUrl("https://m.intl.taobao.com/");
}
#Override
public void onBackPressed() {
if (myWebView.canGoBack()) {
myWebView.goBack();
} else {
super.onBackPressed();
}
}enter code here
main_activity.xml
` <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:fab="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<WebView
android:id="#+id/activity_webview"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</RelativeLayout>`
`Here is My Screenshot
Test on Real Device Android 4.3
Test on Emulator Android 4.3
On real device can not see any photo and contents from the web. But on emulator can see image and content. How to fix it can see image and content on real device? Please help me.
Best Regards,
STP

Android WebView error for high density screens

I have an Android application which uses a WebView to render web page. In css I have set to show everything twice as big for high density screens (like Nexus 7 2013). If I open the web page from the browser, Everything shows as it should. But when I run the app, everything is very small.
Is there any way to determine why the application WebView shows content for lower density screens but browser (Chrome) shows as it should!
Device: Nexus 7 2013

// I used this class and my code is working fime at my side please try this may be it will help you
public class WebViewActivity extends Activity {
private WebView webview;
private static final String TAG = "Main";
private ProgressDialog progressBar;
private TextView header_maintext;
private TextView headeroptiontext;
private RelativeLayout back;
private String url_string="http://www.google.com";
private String header_maintext_string="Your text";
/** Called when the activity is first created. */
#SuppressLint("SetJavaScriptEnabled") #Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.webview_layout);
webview = (WebView)findViewById(R.id.webview01);
header_maintext= (TextView)findViewById(R.id.header_maintext);
header_maintext.setText(header_maintext_string);
headeroptiontext = (TextView)findViewById(R.id.headeroptiontext);
headeroptiontext.setVisibility(View.GONE);
WebSettings settings = webview.getSettings();
settings.setJavaScriptEnabled(true);
webview.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
webview.getSettings().setLoadWithOverviewMode(true);
webview.getSettings().setUseWideViewPort(true);
back = (RelativeLayout) findViewById(R.id.back_layout);
back.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0)
{
// TODO Auto-generated method stub
if(webview.canGoBack() == true)
{
webview.goBack();
}
else
{
finish();
}
}
});
final AlertDialog alertDialog = new AlertDialog.Builder(this).create();
progressBar = ProgressDialog.show(WebViewActivity.this, "My application", "Loading...");
webview.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
public void onPageFinished(WebView view, String url) {
Log.i(TAG, "Finished loading URL: " +url);
if (progressBar.isShowing()) {
progressBar.dismiss();
}
}
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
Toast.makeText(WebViewActivity.this, "Oh no! " + description, Toast.LENGTH_SHORT).show();
alertDialog.setTitle("Error");
alertDialog.setMessage(description);
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
return;
}
});
alertDialog.show();
}
});
webview.loadUrl(url_string);
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(event.getAction() == KeyEvent.ACTION_DOWN){
switch(keyCode)
{
case KeyEvent.KEYCODE_BACK:
if(webview.canGoBack() == true){
webview.goBack();
}else{
finish();
}
return true;
}
}
return super.onKeyDown(keyCode, event);
}
}

I think this article should help explain what you need to do: https://developers.google.com/chrome/mobile/docs/webview/pixelperfect
I suspect that the difference between Chrome and WebView boils down to the WebSettings that are being applied to the WebView.

How i can call webview form the other screen

i have 3 diferents screens: main(contains one image), dialog(contains another image) and browser(contains a webView) and one activity source, ok, in the activity source I call the dialog on click image in main layout, then the dialog shows another image and I want when click in the dialog image, the app change main layout for browser layout and then the browser load an specific URI and then close the dialog.
My code dont work becouse i dont know how i need use the webView in separate layout, for example, to call in dialog i need use dialog.findViewById(R.id.webView1) or in main only findViewById(R.id.webView1), but this not work now and the app crash...
My code:
ImageView imgMain = (ImageView)findViewById(R.id.imgMain1);
imgMain.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
final Dialog dialog = new Dialog(mainActivity.this);
dialog.setContentView(R.layout.dialog);
dialog.setTitle("Android");
dialog.setCancelable(true);
dialog.show();
//Boton de cerrar del dialog Android
Button closeDialog = (Button)dialog.findViewById(R.id.closeDialogBT);
closeDialog.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
dialog.cancel();
}
});
//click en imagen juegos del dialog android
ImageView imgDialog = (ImageView)dialog.findViewById(R.id.imgDialog1);
imgDialog.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
final WebView mWebView = (WebView)findViewById(R.id.webView1);
mWebView.loadUrl("http://www.example.com");
mWebView.setWebViewClient(new WebViewClient());
setContentView(R.layout.browser);
dialog.cancel();
}
});
}
});
Thank You!!!!

Why do you want to start WebView of one Activity from other activity.
It will be better to start activity containing WebView from your "imgDialog" with the intent.
and send URL string in that intent's extras.
in next step load webview with the URL string fetched from intent.

Try this. Hope this will help you
public class Example extends Activity {
private WebView mWebView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.translate);
mWebView = (WebView) findViewById(R.id.webview);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.loadUrl("http://www.example.com");
mWebView.setWebViewClient(new HelloWebViewClient());
}
private class HelloWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView webview, String url)
{
webview.loadUrl(url);
return true;
}
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event)
{
if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack())
{
mWebView.goBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
}

how to dismiss the progressbar before the loading using the back button?

I am using the progress bar for the web view.I need to stop progress bar before the page load.I press the back button but not working in between loading.
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.webview);
mWebView = (WebView) findViewById(R.id.webview);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
final AlertDialog alertDialog = new AlertDialog.Builder(this).create();
progressBar =new ProgressDialog(this);
progressBar.setCancelable(true);
progressBar.show();
mWebView.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Log.i("TEST", "Processing webview url click...");
view.loadUrl(url);
return true;
}
public void onPageFinished(WebView view, String url) {
Log.i("TEST", "Finished loading URL: " +url);
if (progressBar.isShowing()) {
progressBar.dismiss();
}
}
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
Log.e("TEST", "Error: " + description);
Toast.makeText(getApplicationContext(), "Oh no! " + description, Toast.LENGTH_SHORT).show();
alertDialog.setTitle("Error");
alertDialog.setMessage(description);
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
return;
}
});
alertDialog.show();
}
});
mWebView.loadUrl("http://www.google.com");
}
For back button test I use this
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
Toast.makeText(getApplicationContext(),"hi", Toast.LENGTH_LONG).show();
return true;
}
return super.onKeyDown(keyCode, event);
}

Hi
Please check this out
progressBar = new ProgressDialog(this);
progressBar.setCancelable(true);
progressBar.setOnCancelListener(new OnCancelListener() {
public void onCancel(DialogInterface arg0) {
if(progressBar.isShowing())
progressBar.dismiss();
finish();
}
});
progressBar.setMessage("Loading...");
progressBar.show();
Thanks to every one

If I were you, I would use AsyncTask to load the data of the URL, and show the ProgressDialog in between.
On start, spawn off a different thread which fetches the content of the URL
Start displaying the ProgressDialog
When you have the data of the URL that the thread returned, load it in the webView
Dismiss the ProgressDialog
For running things in different thread, check AsyncTask out.

Use Multithreading to implement progress and visual appearence using UIWorker Thread