ionic2/3注册安卓返回

如果使用了

this.app.getRootNav().push()以及this.navCtrl.push();

则在注册安卓返回键的时候

registerBackButtonAction() {

if (!this.nativeService.isAndroid()) {

return;

}

this.platform.registerBackButtonAction(() => {

if (this.keyboard.isOpen()) {//如果键盘开启则隐藏键盘

this.keyboard.close();

return;

}

//点击返回按钮隐藏toast或loading或Overlay

this.ionicApp._toastPortal.getActive() ||this.ionicApp._loadingPortal.getActive()|| this.ionicApp._overlayPortal.getActive();

//隐藏modal

let activePortal = this.ionicApp._modalPortal.getActive();

if (activePortal) {

activePortal.dismiss();

return;

}

//页面返回

if(this.app.getRootNav().canGoBack()){

//this.showExit() this.nativeService.minimize()

return this.app.goBack()

}else{

return this.showExit();

}

}, 10);

}

//双击退出提示框

showExit() {

if (this.backButtonPressed) { //当触发标志为true时，即2秒内双击返回按键则退出APP

this.platform.exitApp();

} else {

this.nativeService.showToast('再按一次退出应用');

this.backButtonPressed = true;

setTimeout(() => { //2秒内没有再次点击返回则将触发标志标记为false

this.backButtonPressed = false;

}, 2000)

}

巴特西