Mixing
Ionic 4 back button callback method executing twice
I am using ionic platform backbutton to over ride the hardware back button functionality. Its working fine to load the previous page but its calling the callback method of backbutton subscribeWithPriority twice. So if i display the pop up in callback method, that pop up is displaying twice which is very annoying. Below is the code i have added in constructor of my app module.
I am only using this back button subscription at one place in my app and that is the main app module as i wanted to show the exit popup msg to user when back button is pressed.
Below is the code for back button subscription:
this.backBtnSubscriber = this.platform.backButton
.subscribeWithPriority(9999,
() => {
this.alertDialogService.presentAlert();
});
Details about my ionic version are below:
Ionic:
ionic (Ionic CLI) : 4.3.1
Ionic Framework : @ionic/angular 4.0.0-rc.0
@angular-devkit/build-angular : 0.7.2
@angular-devkit/schematics : 0.7.2
@angular/cli : 6.1.1
@ionic/angular-toolkit : 1.2.0
Cordova:
cordova (Cordova CLI) : 8.1.2 (cordova-lib@8.1.1)
Cordova Platforms : android 7.0.0, ios 4.5.5
Cordova Plugins : cordova-plugin-ionic-keyboard 2.1.3, cordova-plugin-ionic-webview 2.3.1, (and 15 other plugins)
System:
Android SDK Tools : 26.1.1
NodeJS : v10.4.1
npm : 6.1.0
OS : Windows 10
angular ionic-framework ionic-native asked Jan 1 at 14:26
umair yasinumair yasin
841113
add a comment |
I am using ionic platform backbutton to over ride the hardware back button functionality. Its working fine to load the previous page but its calling the callback method of backbutton subscribeWithPriority twice. So if i display the pop up in callback method, that pop up is displaying twice which is very annoying. Below is the code i have added in constructor of my app module.
I am only using this back button subscription at one place in my app and that is the main app module as i wanted to show the exit popup msg to user when back button is pressed.
Below is the code for back button subscription:
this.backBtnSubscriber = this.platform.backButton
.subscribeWithPriority(9999,
() => {
this.alertDialogService.presentAlert();
});
Details about my ionic version are below:
Ionic:
ionic (Ionic CLI) : 4.3.1
Ionic Framework : @ionic/angular 4.0.0-rc.0
@angular-devkit/build-angular : 0.7.2
@angular-devkit/schematics : 0.7.2
@angular/cli : 6.1.1
@ionic/angular-toolkit : 1.2.0
Cordova:
cordova (Cordova CLI) : 8.1.2 (cordova-lib@8.1.1)
Cordova Platforms : android 7.0.0, ios 4.5.5
Cordova Plugins : cordova-plugin-ionic-keyboard 2.1.3, cordova-plugin-ionic-webview 2.3.1, (and 15 other plugins)
System:
Android SDK Tools : 26.1.1
NodeJS : v10.4.1
npm : 6.1.0
OS : Windows 10
asked Jan 1 at 14:26
umair yasinumair yasin
841113
add a comment |
I am using ionic platform backbutton to over ride the hardware back button functionality. Its working fine to load the previous page but its calling the callback method of backbutton subscribeWithPriority twice. So if i display the pop up in callback method, that pop up is displaying twice which is very annoying. Below is the code i have added in constructor of my app module.
I am only using this back button subscription at one place in my app and that is the main app module as i wanted to show the exit popup msg to user when back button is pressed.
Below is the code for back button subscription:
this.backBtnSubscriber = this.platform.backButton
.subscribeWithPriority(9999,
() => {
this.alertDialogService.presentAlert();
});
Details about my ionic version are below:
Ionic:
ionic (Ionic CLI) : 4.3.1
Ionic Framework : @ionic/angular 4.0.0-rc.0
@angular-devkit/build-angular : 0.7.2
@angular-devkit/schematics : 0.7.2
@angular/cli : 6.1.1
@ionic/angular-toolkit : 1.2.0
Cordova:
cordova (Cordova CLI) : 8.1.2 (cordova-lib@8.1.1)
Cordova Platforms : android 7.0.0, ios 4.5.5
Cordova Plugins : cordova-plugin-ionic-keyboard 2.1.3, cordova-plugin-ionic-webview 2.3.1, (and 15 other plugins)
System:
Android SDK Tools : 26.1.1
NodeJS : v10.4.1
npm : 6.1.0
OS : Windows 10
asked Jan 1 at 14:26
umair yasinumair yasin
841113
I am using ionic platform backbutton to over ride the hardware back button functionality. Its working fine to load the previous page but its calling the callback method of backbutton subscribeWithPriority twice. So if i display the pop up in callback method, that pop up is displaying twice which is very annoying. Below is the code i have added in constructor of my app module.
I am only using this back button subscription at one place in my app and that is the main app module as i wanted to show the exit popup msg to user when back button is pressed.
Below is the code for back button subscription:
this.backBtnSubscriber = this.platform.backButton
.subscribeWithPriority(9999,
() => {
this.alertDialogService.presentAlert();
});
Details about my ionic version are below:
Ionic:
ionic (Ionic CLI) : 4.3.1
Ionic Framework : @ionic/angular 4.0.0-rc.0
@angular-devkit/build-angular : 0.7.2
@angular-devkit/schematics : 0.7.2
@angular/cli : 6.1.1
@ionic/angular-toolkit : 1.2.0
Cordova:
cordova (Cordova CLI) : 8.1.2 (cordova-lib@8.1.1)
Cordova Platforms : android 7.0.0, ios 4.5.5
Cordova Plugins : cordova-plugin-ionic-keyboard 2.1.3, cordova-plugin-ionic-webview 2.3.1, (and 15 other plugins)
System:
Android SDK Tools : 26.1.1
NodeJS : v10.4.1
npm : 6.1.0
OS : Windows 10
asked Jan 1 at 14:26
umair yasinumair yasin
841113
asked Jan 1 at 14:26
umair yasinumair yasin
841113
asked Jan 1 at 14:26
umair yasinumair yasin
841113
asked Jan 1 at 14:26
umair yasinumair yasin
841113
asked Jan 1 at 14:26
umair yasinumair yasin
841113
841113
add a comment |
add a comment |
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