隐藏ion-nav-back-button的文字

app.config(function ($stateProvider,$ionicConfigProvider) {
$ionicConfigProvider.backButton.text("");
$ionicConfigProvider.backButton.previousTitleText(false);
$stateProvider
.state(‘home‘,{
templateUrl:‘home.html‘
})
.state(‘music‘,{
templateUrl:‘music.html‘
});