"Android Advanced Light"--dagger2

NO1:

Project's Build.gradle file add

buildscript{    dependencies{...        classpath ' com.neenbedankt.gradle.plugins:android-apt:1.8 '}    

Module:app's Build.gradle add

Apply plugin: ' com.neenbedankt.android-apt ' ... dependencies{...    Apt ' com.google.dagger:dagger-compiler:2.7 '    compile ' com.google.dagger:dagger:2.7 '}

No2:

@Inject, @Component

 Public class watch{    @Inject    public  Watch () {    }    publicvoid  Work () {    }}

@Component  Public Interface mainactivitycomponent{    void  inject (mainactivity activity);}

Call

 Public class extends appcompatactivity{    SuperonCreate (savedinstancestate);    Setcontentview (r.layout.activity_main);    Daggermainactivitycomponent.create (). Inject (this); // 2     watch.work ();}

No3:

@Module, @Provides

@InjectGson Gson;

@Module  Public class gsonmodule{    @Provides    public  Gson Providegson () {        returnNew  Gson ();    }}

@Component (modules = Gsonmodule.  Class)publicinterface  mainactivitycomponent{    void  Inject (mainactivity activity);}

Call

 Public class extends appcompatactivity{    @Inject    gson Gson;    @Override    protectedvoid  onCreate (Bundle savedinstancestate) {          Super. OnCreate (savedinstancestate);        Setcontentview (r.layout.activity_main);        Daggermainactivitycomponent.create (). Inject (this);         = "{' name ': ' Zhangwuji ', ' Age ':"} ";         = Gson.fromjson (Jsondata,man.class);}    }

No4:

@Named, @Qualifier

@Module  Public class enginemodule{    @Provides    @Named ("Gasoline")    public  Engine Providegasoline () {        returnnew  gasolineengine ();    }    @Provides    @Named ("Diesel")    public  Engine Providediesel () {         return New dieselengine ();    }}

Call

 Public class car{    private  engine engine;    @Inject    Public Car (@Named ("Diesel") engine engine) {        this. Engine =   engine;    }      Public String Run () {        return  engine.work ();    }}

-------------------------------------

  @Qualifier @retention (RUNTIME)  public  @interface   gasoline{}@ Qualifier@retention (RUNTIME)  public  @ Interface   diesel{}  

  @Module  public  class   enginemodule{@Provides @Gasonline  public Engine Providegasoline () { return  new   Gasolineengine (); @Provides @Diesel  public   Engine provide Diesel () { return  new   Dieselengine (); }}

 Public class car{    private  engine engine;    @Inject    public  Car (@Gasoline engine) {        this. Engine = engine;    }      Public String Run () {        return  engine.work ();    }}

NO5:

@Singleton, @Scope

@InjectGson Gson; @InjectGson gson1;

@Module  Public class gsonmodule{    @Singleton    @Provides    public  Gson Providegson () {          Returnnew  Gson ();}    }

= Gsonmodule. class )publicinterface  mainactivitycomponent{     void  Inject (Mainactiviy activity);}

Call

 Public class extends appcompatactivity{    privatestaticfinal String tag= "Dagger2";    @Inject    Gson Gson;    @Inject    Gson gson1;    @Override    protectedvoid  onCreate (Bundle savedinstancestate) {         Super . OnCreate (savedinstancestate);        Setcontentview (r.layout.activity_main);        Daggermainactivitycomponent.create (). Inject (this);}    }

-----------------------------

@Scope @documented@retention (RUNTIME)  public @interface singleton{}

@Scope @rentention (RUNTIME)  public @interface applicationscope{}

@Module  Public class gsonmodule{    @ApplicationScope    @Provides    public  Gson Providegson () {         returnnew  Gson ();}    }

@ApplicationScope @component (modules=gsonmodule. class )publicinterface  activitycomponent{    void  inject ( Mainactivity activity);     void inject (secondactivity activity);}

 Public classAppextendsapplication{activitycomponent activitycomponent; @Override Public voidonCreate () {Super. OnCreate (); Activitycomponent=Daggeractivitycomponent.builder (). build (); }     Public StaticAPP Get (Context context) {return(APP) context.getapplicationcontext (); } activitycomponent getactivitycomponent () {returnactivitycomponent; }}

Call

 Public classMainactivityextendsappcompatactivity{Private Static FinalString tag= "Dagger2"; PrivateButton Bt_jump;    @Inject Gson Gson;    @Inject Gson Gson1; @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.layout.activity_main); App.get (mainactivity. This). Getactivitycomponent (). Inject ( This);    OnClick (); }    Private voidOnClick () {bt_jump=(Button) Findviewbyid (r.id.bt_jump); Bt_jump.setonclicklistener (NewView.onclicklistener () {@Override Public voidOnClick (view view) {Intent Intent=NewIntent (mainactivity. This, Secondactivity.class);            StartActivity (Intent);    }        }); }}

NO6:

@Component

 public  class   swordsman{@Inject  public   swordsman{}  public   String    Fighting () { return  "for the tree, MO and grass contend" ; }}

  @Module  public  class   swordsmanmodule{@Provides  public   Swordsman Provideswordsman () { return  new   Swordsman (); }} @Component (Modules  = Swordsmanmodule. class  )  public   Interface   swordsmancomponent{swordsman Getswordsman ();}  

= Gsonmodule. class, dependencies = swordsmancomponent. class )publicinterface  activitycomponent{    void  inject ( Mainactivity activity);     void inject (secondactivity activity);}

 Public classAppextendsapplication{activitycomponent activitycomponent; @Override Public voidonCreate () {Super. OnCreate (); Activitycomponent=Daggeractivitycomponent.builder ();    Swordsmancomponent (Daggerswordsmancomponent.builder (). Build ()). build (); }     Public StaticAPP Get (Context context) {return(APP) context.getapplicationcontext (); } activitycomponent getactivitycomponent () {returnactivitycomponent; }}

Call

 Public class extends appcompatactivity{    @Inject    Swordsman Swordsman;    @Override    protectedvoid  onCreate (Bundle savedinstancestate) {          Super. OnCreate (savedinstancestate);        Setcontentview (R.layout.activity_second);        App.get (secondactivity. this). Getactivitycomponent (). Inject (this);         = swordsman.fighting (;    }}

No7:

Lazy Loading: When the @inject is not initialized, but when used, call the Get method to get the instance

 Public classSecondactivityextendsappcompatactivity{Private Static FinalString tag= "Dagger2"; @Inject Lazy<Swordsman>Swordsmanlazy; @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.layout.activity_second); App.get (secondactivity. This). Getactivitycomponent (). Inject ( This); Swordsman Swordsman=Swordsmanlazy.get ();        Swordsman.fighting (); String SD1=swordsman.fighting (); }}

"Android Advanced Light"--dagger2