I am using WizarDroid library, and creating a simple Wizard.
What I am trying to do is at the final step I want to disable Back button at the bottom. I have searched every where and the documentation is not helping me.
Here is my Basic Wizard code:
public class FormWizard extends BasicWizardLayout
{
public FormWizard()
{
super();
}
#Override
public WizardFlow onSetup()
{
return new WizardFlow.Builder()
/*
* Mark this step as 'required', preventing the user from advancing to the
* next step without selecting one option.
*/
.addStep(Form1.class, true)
.addStep(Form2.class, true)
.addStep(Form3.class)
.create();
}
#Override
public void onWizardComplete()
{
super.onWizardComplete();
// Terminate the wizard
getActivity().finish();
}
}
The Form1,Form2 and Form3 are simply extending WizardStep and showing some data to user.
In the documentation the wizard.goNext(); method is defined but it is not available in my scenario.
I simply want to disable the user to go back after they reach at Form3 or final step.
If you are talking about disabling the software/hardware (next to the home button and menu button) then you simply have to handle the onPress yourself. Example:
//FOR API 5-
#Override
public void onBackPressed() {
Toast.makeText(getApplicationContext(), "Can't go back", Toast.LENGTH_LONG).show();
}
//FOR API 6+
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
Toast.makeText(getApplicationContext(), "Can't go back", Toast.LENGTH_LONG).show();
return true;
} else {
return super.onKeyDown(keyCode, event);
}
}
Related
I am trying to disabling the physical device back in android only in some screens. Trying the below code is not working. Any idea?
import { RouterExtensions } from "nativescript-angular";
import * as application from "application";
import { AndroidApplication, AndroidActivityBackPressedEventData } from "application";
import { isAndroid } from "platform";
export class ItemComponent implements OnInit {
constructor(private router: Router) {}
ngOnInit() {
if (!isAndroid) {
return;
}
application.android.on(AndroidApplication.activityBackPressedEvent, (data: AndroidActivityBackPressedEventData) => {
data.cancel = true; // prevents default back button behavior
});
}
}
#Override
public void onBackPressed() {
if (!shouldAllowBack()) {
doSomething();
} else {
super.onBackPressed();
}
}
Add this code in your activity-
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// Your Code Here. Leave empty if you want nothing to happen on back press.
}
For more information visit this link.
Back button is controlled at Activity level, NativeScript uses one single Activity and all your pages / routes are fragments inside that.
So you don't have to call it on every page / component. Add the listener to your app component and check the router to know which page you are at and cancel the back event.
Use location and check if location consists the desired path(as mentioned in routing file) where you want to use your custom function.
import { Location } from '#angular/common';
constructor(private _location: Location
){}
if (application.android) {
application.android.on(AndroidApplication.activityBackPressedEvent, (data: AndroidActivityBackPressedEventData) => {
const path = this._location.path();
console.log(`path i s--> ${path}`);
switch (path) {
case '/Screen 1':
data.cancel = true;
break;
case '/Screen 2':
//do something else
break;
});
}
I have an android application which contains only one web view , I have loaded the url(which was developed by .net using javascript)in web view , It has facebook login , when user click on that facebook button,it opens the facebook dialog,if user don't want to login,he will click on go back on android but that facebook dialog still appears,how to go back fom facebook dialog to main web view?
I tried this code
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
if (mainWebView.canGoBack()) {
mainWebView.goBack();
Log.d("webview<---", "going_back");
} else if (newWebView != null && newWebView.isFocusable()) {
FBWebView.removeAllViews();
FBWebView.clearHistory();
FBWebView.getParent();
FBWebView=null;
//FBWebView.addView(mWebView);
// FBWebView.loadUrl(url);
//startActivity(new Intent(MainActivity.this, MainActivity.class).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP));
Log.d("fb_webview<---", "finish");
}
return true;
}
}
return super.onKeyDown(keyCode, event);
}
still no use,Can Anyone suggest that how to go back from fb dialog to main web view ,here FBWebview is created dynamically in this activity and mainWebview is intialised through xml , how to close fbWebView to appear the mainwebview?
Write below code in before return statement under KeyEvent.KEYCODE_BACK case:
/* Closing newly created popup window */
if (Build.VERSION.SDK_INT < 18) {
newWebView.clearView();
} else {
newWebView.loadUrl("about:blank");
}
We have a launcher application that works fine on older versions of Android. We have a device that is running Android 5.1, and are running into issues.
When pressing the back button from within the application, we allow the user to go to the settings page. Pressing the home key re-launches the application. Pressing the back button on other devices also relaunches the application.
On the new device, pressing the back button allows us to navigate to the Android home page. It does not launch the application.
We are overriding the back button like so:
#override
public void onBackPressed() {
// Display the password prompt if required
if (PreferencesManager.isPasswordPresent()) {
LeaveApplicationPasswordDialogFragment dialog = LeaveApplicationPasswordDialogFragment.getInstance();
dialog.show(getSupportFragmentManager(), "password");
}
else {
// Prompt whether we are about to leave the app
LeaveApplicationDialogFragment dialog = null;
MyApplication application = (MyApplication )
getApplication();
if (application.isDefaultLauncher()) {
dialog = LeaveApplicationDialogFragment.getInstance("Are you sure you want to leave ** to access the device's settings?");
}
else {
dialog = LeaveApplicationDialogFragment.getInstance("Are you sure you want to leave ***");
}
dialog.show(getFragmentManager(), "leaving");
}
}
In the dialog fragment, we accept the confirmation and process it like so:
public void exitToSettings() {
GUIAndroidTouchBaseActivity.this.startActivity(new Intent(android.provider.Settings.ACTION_SETTINGS));
shutdownOperations();
finish();
}
Per some research and other threads, I worked with our exit method like so:
public void exitToSettings() {
Intent intent = new Intent(android.provider.Settings.ACTION_SETTINGS);
intent.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP );
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
GUIAndroidTouchBaseActivity.this.startActivity(intent);
shutdownOperations();
finish();
}
No dice. Same behavior.
What am I missing? Is there something in OS 5.1 that's overriding our launcher? Again, pressing the home button launches the app as expected. Navigating to the home page from the settings page by pressing the back button does not.
What we have works on other devices and OSs. We've had no issue with 4.1 and 6.1.
We are also overriding the back button like so:
#Override
public boolean onKeyDown(int keyCode, KeyEvent KEvent) {
int deviceid = KEvent.getDeviceId();
//Making sure not processing same key again
if (KEvent.getRepeatCount() != 0) {
return true;
}
if (!SettingsOpened) {
int keyaction = KEvent.getAction();
// "Esc" key can not be stooped id diveceid is non zero because it can be back key of android
if (KEvent.getKeyCode() == KeyEvent.KEYCODE_BACK && deviceid != 0) {
return super.onKeyDown(keyCode, KEvent);
}
if (keyaction == KeyEvent.ACTION_DOWN) {
String key = KeyEvent.keyCodeToString(keyCode); //wont work in version 11 or less
if (keyCode != KeyEvent.KEYCODE_ENVELOPE) {
Matcher matcher = KEYCODE_PATTERN.matcher(key);
if (matcher.matches() || ExternalKeyboard.keyMatches(KEvent)) {
int keyunicode = KEvent.getUnicodeChar(KEvent.getMetaState());
char character = (char) keyunicode;
//toast.makeText(this, "onKeyDown" + _lastChar + repeatcount, toast.LENGTH_SHORT).show();
_lastChar = character;
_actionDown = true;
ExternalKeyboard.KeyboardAddChar(character);
}
}
}
return true;
}
else {
return super.onKeyDown(keyCode, KEvent);
}
}
Thanks!
Adding
android:stateNotNeeded="true"
android:clearTaskOnLaunch="false"
to my manifest took care of it.
Currently I'm actually making a mobile app for my website (wordpress) using Webview in Android Studio.
But while navigating into the different pages of it, when I want to go to the previous page using the back button of my android device, my app just close.
How can I solve this?
try this
#Override
public void onBackPressed() {
if(webView.canGoBack()){
webView.goBack();
} else {
super.onBackPressed();
}
}
To implement Back Navigation for WebViews, As from documentation, you can override onBackPressed() and and proxy to the WebView if it has history state as:
#Override
public void onBackPressed() {
if (mWebView.canGoBack()) {
mWebView.goBack();
return;
}
// Otherwise defer to system default behavior.
super.onBackPressed();
}
Or, you can check the event was Back button and if there's history, then you can also use:
public boolean onKeyDown(int keyCode, KeyEvent event) {
// Check if the key event was the Back button and if there's history
if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
webView.goBack();
return true;
}
// If it wasn't the Back key or there's no web page history, show default behavior
// system behavior (probably exit the activity)
return super.onKeyDown(keyCode, event);
}
THe problem is little difficult to convey, The Actual scenario will be help you guys to understand the real problem.
In the Android Application.
I have a lot of the Jquery Mobile Page append to the android Webview.
When i select one Page (E.g) Profile , the page opens properly and if i press the back button, the application moves to the main page, if i again select profile and press back the application goes to the login page.
if i select some other page and select the profile this is not happening. this issue is not only with the single page. in all the page i have the same issue. Can some one guide me what should i have do?
The Source code of the Key Press event,
enter code here
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK && webview.isEnabled()
&& !this.onLogin) {
webview.loadUrl("javascript:handleDeviceBack()");
return true;
} else if (keyCode == KeyEvent.KEYCODE_BACK && this.onLogin) {
moveTaskToBack(true);
}
if (keyCode == KeyEvent.KEYCODE_HOME) {
webview.loadUrl("javascript:handleDeviceHome()");
return true;
}
return false;
}
In my web view,
enter code here
handleDeviceBack = function(status) {
mHealth.util.logMessage('On device Back');
var historyBack = {
"home" : "page",
"loginPage" : "page",
"welcomeMsg" : "page"
};
var moduleIndex = {
"assessNotFound" : "../../home/view/home.html",
"showActivity" : "../../home/view/home.html",
"showMessage" : "../../home/view/home.html",
"show_tracker" : "../../home/view/home.html",
"settingsPage" : "../../home/view/home.html"
};
var graphPages = {
"singlehealthdatapage" : "page",
"multiplehealthdatapage" : "page"
};
var otherShortcuts = {
"show_tracker_view" : "../../trackers/view/showtracker.html",
"detailMessage" : "../../messages/view/showmessage.html",
"alfrescoDIV" : "../../messages/view/showmessage.html"
};
// var exitAppCriteria={ "home" : "page","loginPage" : "page","welcomeMsg" :
// "page"};
if($('.ui-page-active').attr('id')=="condition_index")
{
$.mobile.changePage("../../home/view/history.html");
}
else if (historyBack[$('.ui-page-active').attr('id')]
|| $('body').children().is('#tandcPage')) {
Android.finishActivity();
} else if (moduleIndex[$('.ui-page-active').attr('id')]) {
Android.highlightHome();
$('.ui-alert-wallpaper').detach();
$.mobile.changePage(moduleIndex[$('.ui-page-active').attr('id')]);
} else if (graphPages[$('.ui-page-active').attr('id')]) {
Android.showTab();
Android.pageHistory();
} else if (otherShortcuts[$('.ui-page-active').attr('id')]) {
$.mobile.changePage(otherShortcuts[$('.ui-page-active').attr('id')]);
} else {
$('.dw').detach();
$('.dwo').detach();
$('.dw').detach();
$('.ui-alert-wallpaper').detach();
Android.showTab();
Android.pageHistory();
}
};
I found the problem is with the Android.pageHistory();
enter code here
public void pageHistory() {
this.activity.runOnUiThread(new Runnable() {
#Override
public void run() {
// TODO Auto-generated method stub
WebContainerActivity.webview.goBack();
}
});
}
Where First time its running properly but if the function called repeatly the web view.go back to the first page.
In your activity override backpressed method like this
#Override
public void onBackPressed() {
webview.loadUrl(sameurl);
}
Hard coded the URL by their ID and solved the issue temporarily.