dagger | 易学教程

Difference between Dagger and ButterKnife Android

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问题 Can anyone point out the difference between Dagger and Butterknife? I know that Butterknife is a view injection library and Dagger is a dependency injection library. But the documentation online seems a bit overhead for me. According to Butterknife documentation, you can do non-activity injections as well, which is what Dagger does? Or did I misunderstand something? 回答1: ButterKnife is targeted to inject views only. Non-activity injection just means that you can provide your own view root to

关于数组，对象，构造器的写法以及事件的使用

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1 常用的数组方法，push（）结尾添加元素法，unshifi开头添加元素法，pop删除最后一个元素，shift删除第一个元素，a[i]=value更改元素数组转字符串toString,arr.indexOf包含某个元素， arr.splice(arg1,arg2,[arg3,arg4]);第一个参数定义添加/删除元素位置，第二个参数应删除多少个元素，arr.concat(arr1,arr2);合并多个数组，生成一个新的数组；sort()以字母顺序对数组进行排序； reverse()反转数组中的元素； 2 获取属性值方式：person[‘name’]； person.name ；对象定义好后可以修改：person.name=”joney”; 可以继续添加值：person.height= 180; 删除属性：delete person.height; var ars=[21,55,38,99,45,76,56,18,67,88]; // for(i=0;i<ars.length;i++){ for(j=0;j<ars.length-i;j++){ if(ars[j]>ars[j+1]){ var t=ars[j+1]; ars[j+1]=ars[j]; ars[j]=t; } console.log(ars); } } 　　数列中按照开头数字大小进行排列

Dagger 2 Third part Injection Android

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问题 Hi im trying to figure out how to do a clean third party injection. I want to inject Otto bus properly into my services and activities. Iv seen that you can use inject on constructor, but since I dont have any constructor with Android, i wonder how I can then inject my bus. Iv created a module which provides a new instance of the bus. Iv also created a component which has an interface for the Bus object. But how can I get this injected and where should I initiate my graph? Since the

Pass Context or Activity to adapter using Dagger 2

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问题 I inject an Adapter using Dagger 2 without context and it is working, but I am not able to do when I am passing context parameter. Error is coming like this error: android.content.Context cannot be provided without an @Provides-annotated method. Dagger Component @PerActivity @Component(dependencies = ApplicationComponent.class, modules = MainFragmentModule.class) public interface MainFragmentComponent { void inject(MainFragment mainFragment); @ActivityContext Context provideContext(); }

Dagger dependencies when overriding graph with mock module causes NoClassDefFoundError

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问题 I am am migrating project to dagger 1.2.2. I'd like to override some dependencies for functional tests. For that I included the dagger-compiler as a dependency of the androidTest-build(?) as well: apt "com.squareup.dagger:dagger-compiler:$daggerVersion" compile "com.squareup.dagger:dagger:$daggerVersion" androidTestApt "com.squareup.dagger:dagger-compiler:$daggerVersion Now the compiler complains that he cannot find a class (I guess because both builds now contain the transitive dependencies

HashMap of Retrofit Classes with Dagger

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问题 I'm kinda new to Dependency Injection and I have a doubt. In my app I have a HashMap to store built classes (like a cache) for RetroFit, but now I'm moving to DI with Dagger and I'd like to know how can I achieve the same behaviour. My code: private Map<String, Object> restInstances; public <T> T getRestClient(Class<T> clazz) { T client = null; if ((client = (T) restInstances.get(clazz.getCanonicalName())) != null) { return client; } client = restAdapter.create(clazz); restInstances.put(clazz

Dagger2 Inherited subcomponent multibindings

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问题 Hope to find some help here after days and days researching about this very interested subject "Inherited subcomponent multibindings which you can find here Inherited subcomponent multibindings which is the last subject in that page. According to the official documentation: subComponent can add elements to multibound sets or maps that are bound in its parent. When that happens, the set or map is different depending on where it is injected. When it is injected into a binding defined on the

How to inject the creation of a BroadcastReceiver object in Fragment using Dagger2?

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问题 I need to inject the creation of NetReceiver object into my Fragment but I get the following error: error: [Dagger/MissingBinding] com.example.myapp.NetReceiver.OnNetCallback cannot be provided without an @Provides-annotated method. Let me show you what I have tried. This is my NetReceiver class: public class NetReceiver extends BroadcastReceiver { private OnNetCallback onNetCallback; @Inject public NetReceiver(OnNetCallback onNetCallback) { this.onNetCallback = onNetCallback; } @Override

Dagger2 not generating Daggercomponent classes

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问题 Dagger2 is not generating any component classes in android studio i know its a known problem while i have gone through almost all ways to implement in my android studio and have tried on various tutorials but every time i got struck here, it fails to build the daggercomponent class . I have also tried to rebuild ,clean gradles and invalidate caches but it does not help . Here is my one of sample project build.gradle buildscript { repositories { jcenter() } dependencies { classpath 'com

Android functional testing with Dagger

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问题 I’m trying to test an Activity with Mockito & Dagger. I have been able to inject dependencies to Activity in my application but when testing the Activity, I have not been able to inject mock to the Activity. Should I inject Activity to test or let getActivity() create it? public class MainActivityTest extends ActivityInstrumentationTestCase2<MainActivity> { @Inject Engine engineMock; private MainActivity mActivity; private Button mLogoutBtn; public MainActivityTest() { super(MainActivity