angular - background mode plugin_not_installed , even background mode plugin is already installed in ionic project

Question

background mode "plugin_not_installed", even background mode plugin is already installed in ionic project

error Showing in console

 {
[ng]   "error": "plugin_not_installed"
[ng] 

}

my package.json details

//   "@ionic-native/background-mode": "^5.30.0",
//  "@angular/core": "^8.2.14",
// "@ionic-native/core": "5.0.0-beta.15",

Answer 1

Note :- platform.ready() is the trick , put the code inside platform.ready() function

constructor(private platform: Platform,private backgroundMode: BackgroundMode){

     platform.ready().then(() => {
          console.log("background mode off")
          this.backgroundMode.enable();
          console.log("background mode check",this.backgroundMode.isActive(), this.backgroundMode.isEnabled(),this.backgroundMode.isScreenOff);
    
          // this.backgroundMode.enable();
    
          console.log("-------------------->", this.backgroundMode.isEnabled());
          console.log("-------------------->", this.backgroundMode.isActive());
    
          this.backgroundMode.on("activate").subscribe(()=>{
                    
            console.log("background mode on");
            
          });
        });

}