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RecyclerView实现水波纹点击效果

2019-03-28 11:04 507 查看

本文实例为大家分享了RecyclerView实现水波纹点击效果的具体代码，供大家参考，具体内容如下

效果图

item.xml

这里就是主要设置background为我们后面写的一个selector

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:background="@drawable/recycler_item_selector"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="40sp"
android:text="aaaa"/>
</LinearLayout>

drawable-v21/recycler_item_selector.xml (v21版本以上)

<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="@color/colorPrimary">
<item android:drawable="@color/write"/>
</ripple>

drawable/recycler_item_selector.xml (v21版本以下的没有水波纹效果)

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@color/colorPrimary" android:state_pressed="true"/>
<item android:drawable="@color/colorPrimary" android:state_focused="true"/>
<item android:drawable="@color/write"/>
</selector>

接下来是MyAdapter

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {

private OnRvItemClick mOnRvItemClick;
private Context mContext;
String[] strings;

public MyAdapter(Context ctx, String[] strings, OnRvItemClick onRvItemClick) {
mContext = ctx;
this.mOnRvItemClick = onRvItemClick;
this.strings = strings;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(mContext).inflate(R.layout.item, parent, false);
return new ViewHolder(view);
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.setData(position);
}

@Override
public int getItemCount() {
return 20;
}

public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
@BindView(R.id.textView)
TextView textView;

public ViewHolder(View itemView) {
super(itemView);
ButterKnife.bind(this,itemView);
itemView.setOnClickListener(this);
}

public void setData(int position) {

textView.setText("position" + position);
}

@Override
public void onClick(View view) {
if (mOnRvItemClick != null)
mOnRvItemClick.onItemClick(view, getAdapterPosition());
}

}

/**
* item点击接口
*/
public interface OnRvItemClick {
void onItemClick(View v, int position);
}
}

MainActivity

public class MainActivity extends AppCompatActivity {

@BindView(R.id.RecyclerView)
RecyclerView mRecyclerView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
MyAdapter myAdapter = new MyAdapter(this, null, new MyAdapter.OnRvItemClick() {
@Override
public void onItemClick(View v, int position) {
Toast.makeText(getApplicationContext(), "click" + position, Toast.LENGTH_SHORT)
.show();
}
});
mRecyclerView.setLayoutManager(new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false));

mRecyclerView.setAdapter(myAdapter);
}
}

github ：RecyclerView水波纹效果

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。

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