Android RecyclerView使用详解（一）

一、前言 RecyclerView是谷歌V7包下新增的控件,用来替代ListView的使用,在RecyclerView标准化了ViewHolder类似于ListView中convertView用来做视图缓.

先来说说RecyclerView的有点就是,他可以通过设置LayoutManager来快速实现listview、gridview、瀑布流的效果，而且还可以设置横向和纵向显示，添加动画效果也非常简单(自带了ItemAnimation，可以设置加载和移除时的动画，方便做出各种动态浏览的效果),也是官方推荐使用的.以下是官方的说明:

RecyclerView is a more advanced and flexible version of ListView. This widget is a container for large sets of views that can be recycled and scrolled very efficiently. Use the RecyclerView widget when you have lists with elements that change dynamically. 简单说就是当你需要动态展示一组数据的时候就会需要用到它。

讲了这么多虚的，接下来我们看看在代码中怎么来实现.

##二、实现

首先要用这个控件，你需要在gradle文件中添加包的引用（配合官方CardView使用）

[代码]xml代码：

1 2	`compile 'com.android.support:cardview-v7:21.0.3'` `compile 'com.android.support:recyclerview-v7:21.0.3'`

然后是在XML文件用使用它

[代码]xml代码：

<android.support.v7.widget.recyclerview xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/recycler_view" android:layout_centervertical="true" android:layout_centerhorizontal="true"></android.support.v7.widget.recyclerview>

接着在Activity中设置它

[代码]java代码：

public class MainActivity extends ActionBarActivity {

@InjectView(R.id.recycler_view)

RecyclerView mRecyclerView;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

ButterKnife.inject(this);

mRecyclerView.setLayoutManager(new LinearLayoutManager(this));//这里用线性显示类似于listview

//        mRecyclerView.setLayoutManager(new GridLayoutManager(this, 2));//这里用线性宫格显示 类似于grid view

//        mRecyclerView.setLayoutManager(new StaggeredGridLayoutManager(2, OrientationHelper.VERTICAL));//这里用线性宫格显示 类似于瀑布流

mRecyclerView.setAdapter(new NormalRecyclerViewAdapter(this));

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

getMenuInflater().inflate(R.menu.menu_main, menu);

return true;

}

@Override

public boolean onOptionsItemSelected(MenuItem item) {

int id = item.getItemId();

if (id == R.id.action_settings) {

return true;

}

return super.onOptionsItemSelected(item);

}

然后是适配器代码

[代码]java代码：

public class NormalRecyclerViewAdapter extends RecyclerView.Adapter<normalrecyclerviewadapter.normaltextviewholder> {

private final LayoutInflater mLayoutInflater;

private final Context mContext;

private String[] mTitles;

public NormalRecyclerViewAdapter(Context context) {

mTitles = context.getResources().getStringArray(R.array.titles);

mContext = context;

mLayoutInflater = LayoutInflater.from(context);

}

@Override

public NormalTextViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

return new NormalTextViewHolder(mLayoutInflater.inflate(R.layout.item_text, parent, false));

}

@Override

public void onBindViewHolder(NormalTextViewHolder holder, int position) {

holder.mTextView.setText(mTitles[position]);

}

@Override

public int getItemCount() {

return mTitles == null ? 0 : mTitles.length;

}

public static class NormalTextViewHolder extends RecyclerView.ViewHolder {

@InjectView(R.id.text_view)

TextView mTextView;

NormalTextViewHolder(View view) {

super(view);

ButterKnife.inject(this, view);

view.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

Log.d("NormalTextViewHolder", "onClick--> position = " + getPosition());

}

});

}

}</normalrecyclerviewadapter.normaltextviewholder>

##三、效果图

LinearLayoutManager样式

GridLayoutManager样式

最后给出代码下载地址–>Demo Code