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https://github.com/litongjava/android-view-inject

适用与嵌入式设备的控件注入框架
https://github.com/litongjava/android-view-inject

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适用与嵌入式设备的控件注入框架

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# android-view-inject

## 简介

适用与嵌入式设备的控件注入框架

## 概述

传统的项目中，为了从XML文件找到各个控件，需要使用方法findViewById,太多的findViewId,使我们的代码变得繁琐，

获取，强转，千篇一律的重复着某种机制，其实内心也是蛮崩溃的。

当然了，为了解决不必要的findViewById，有很多出色的第三方，如ButterKnife，AndroidAnotations，还有XUtils,等等，这些第三方不可否认，

是特别的优秀，功能也是非常的强大，使用起来也是非常的简单，但是，也有一定的负面影响，

显而可见，这些第三方，不仅仅有注解功能，还有联网，请求数据库等等其它很多功能，

而我们只需要一个注解功能，这不等于，我需要一个苹果，你一下给了我一车水果，无形中增加了内存的容量

其实说的通俗点就是，第三方很多冗余的代码，会占去我们的内存，基于这样的一个原因，不就是一个注解功能吗，我们何不自己实现呢?

## 主要功能

### 参考工程

AndroidViewInjectTest

### 安装工程到本地

这是一个maven工程,使用maven将工程安装到本地

### 添加依赖

在build.gradle中添加mavenLocal()

```

buildscript {



  repositories {

    mavenLocal()

    google()

    jcenter()

  }

  dependencies {

    classpath 'com.android.tools.build:gradle:3.1.3'



    // NOTE: Do not place your application dependencies here; they belong

    // in the individual module build.gradle files

  }

}



allprojects {

  repositories {

    mavenLocal()

    google()

    jcenter()

  }

}



task clean(type: Delete) {

  delete rootProject.buildDir

}



```

添加构件

```

  implementation 'com.litongjava:android-view-inject:1.0.1'

```

### 整合Activity

* @FindViewByIdLayout 查找布局文件并注入到当前Activity,用于替换setContentView

* @FindViewById 查看控件id,注入到成员变量

* @OnClick 添加单击事件



测试代码

```

package com.litongjava.android_view_inject_test;



import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.TextView;

import android.widget.Toast;



import com.litongjava.android.view.inject.annotation.FindViewById;

import com.litongjava.android.view.inject.annotation.FindViewByIdLayout;

import com.litongjava.android.view.inject.annotation.OnClick;

import com.litongjava.android.view.inject.utils.ViewInjectUtils;



@FindViewByIdLayout(R.layout.activity_main)

public class MainActivity extends AppCompatActivity {



  @FindViewById(R.id.tv)

  private TextView mText;



  @Override

  protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    //setContentView(R.layout.activity_main);

    ViewInjectUtils.injectActivity(this, this);

    mText.setText("Annotation");

  }



  @OnClick(R.id.tv)

  public void onClick(View view) {

    Toast.makeText(this, "on click", Toast.LENGTH_LONG).show();

  }

}

```



### Fragment

布局文件

fragment_async.xml

```



  



```

测试类如下

```

package com.litongjava.android_view_inject_test.fragment;



import android.os.Bundle;

import android.support.annotation.NonNull;

import android.support.annotation.Nullable;

import android.support.v4.app.Fragment;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.Toast;



import com.litongjava.android.view.inject.annotation.FindViewById;

import com.litongjava.android.view.inject.annotation.OnClick;

import com.litongjava.android.view.inject.utils.ViewInjectUtils;

import com.litongjava.android_view_inject_test.R;



public class AsyncTaskFragment extends Fragment{



  @FindViewById(R.id.btn1)

  private Button button1;



  public static Fragment newInstance() {

    return new AsyncTaskFragment();

  }



  @Nullable

  @Override

  public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.fragment_async, container, false);

    ViewInjectUtils.injectViewAndOnClick(view,this);

    return view;

  }



  @OnClick(R.id.btn1)

  public void button1OnClick(){

    Toast.makeText(this.getActivity(),"button 1 click",Toast.LENGTH_LONG).show();

  }

}



```

### RecyclerView

fragment_photo_gallery.xml

```



```

使用RecyclerView代码

```

package com.litongjava.android_view_inject_test.fragment;



import android.os.Bundle;

import android.support.annotation.NonNull;

import android.support.annotation.Nullable;

import android.support.v4.app.Fragment;

import android.support.v7.widget.GridLayoutManager;

import android.support.v7.widget.RecyclerView;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;



import com.litongjava.android.view.inject.annotation.FindViewById;

import com.litongjava.android.view.inject.utils.ViewInjectUtils;

import com.litongjava.android_view_inject_test.R;



public class PhotoGalleryFragment extends Fragment {

  @FindViewById(R.id.fragment_photo_gallery_recycler_view)

  private RecyclerView mPhotoRecyclerView;



  public static Fragment newInstance() {

    return new PhotoGalleryFragment();

  }



  @Nullable

  @Override

  public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.fragment_photo_gallery, container, false);

    //mPhotoRecyclerView = (RecyclerView)view.findViewById(R.id.fragment_container);

    ViewInjectUtils.injectView(view, this);

    mPhotoRecyclerView.setLayoutManager(new GridLayoutManager(getActivity(), 3));

    return view;

  }

}

```

### ViewHolder

在ViewHolder 中使用ViewUtils.inject

```

private class CrimeHolder extends RecyclerView.ViewHolder {



  @FindViewById(R.id.list_item_crime_date_text_view)

  private TextView mTittleTextView;



  public CrimeHolder(View itemView) {

    super(itemView);

    ViewInjectUtils.injectView(itemView,this);

  }

}

```