为你的RecyclerView的item点击事件
前言
本文用作个人笔记，也供同行参考，共同进步。
正题
我们都知道RecyclerView的强大，替代listView，gridView也能实现瀑布流效果等。个人习惯用新控件，不断进步。所以在我需要listView的情况下我就会使用RecyclerView。简单说下使用步骤。
进入栗子环节
//和listView使用步骤相同，初始化控件,数据源
@BindView(R.id.rv) RecyclerView mRecyclerView;
String[] datas = {"个人资料","消息推送","帐号管理","连接健康","帮助与反馈","清空缓存"};
//初始化适配器，RecyclerView的适配器要重写RecyclerView.Adapter重点
ListView lv = null;
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView parent, View view, int position, long id) {
}
});RecyclerView并不能设置OnItemClickListener。不过没关系，山不就我，我去就山。我们可以为RecyclerView的每个item设置点击事件。
先来看看RecyclerView专用适配器的结构
public class SettingAdapter extends RecyclerView.Adapter<SettingAdapter.MyViewHolder>{
@Override
public SettingAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
//初始化布局文件
View v = LayoutInflater.from(context).inflate(R.layout.x, parent, false);
//在onCreateViewHolder方法中设置holder
SettingAdapter.MyViewHolder holder = new SettingAdapter.MyViewHolder(v);
return holder;
}
@Override
public void onBindViewHolder(SettingAdapter.MyViewHolder holder, int position) {
//在onBindViewHolder做操作
holder.tv1.setText("test");
}
@Override
public int getItemCount() {
//返回数据源长度
return datas.length;
}
public class MyViewHolder extends RecyclerView.ViewHolder {
@BindView(R.id.recyclerview_tv1) TextView tv1;
public MyViewHolder(View itemView) {
super(itemView);
ButterKnife.bind(this,itemView);
}
}
}从适配器上入手，我们应该在onCreateViewHolder方法中为每个布局（item）设置点击事件就可以了。但在设置点击事件的时候，我们应该知道 item的position，所以我们可以通过在onBindViewHolder绑定方法中 对对应的item设置 tag属性来区别。
举个栗子
第一步，创建接口,让适配器实现，并重写
public interface OnRecyclerItemClick {
//回调方法,view是点击的item布局，tagPois就是item的position
void onItemClick(View view , int tagPois);
}
//重写onItemClick
@Override
public void onItemClick(View view, int tag) {
Intent itent = null;
switch(tag){
case 0:
itent = new Intent(instance,PersonalInfoSetActivity.class);
break;
}
if (itent!=null){
instance.startActivity(itent);
}else {
Toast.makeText(context, "还没设置点击事件 item"+tag, Toast.LENGTH_SHORT).show();
}
} 第二步，设置tag
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
//设置tag为position
holder.itemView.setTag(position);
｝ 第三步，设置点击事件
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
//设置点击事件
View v = LayoutInflater.from(context).inflate(R.layout.personal_setting_recyclerview, parent, false);
v.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onItemClick(v,(int) v.getTag());
}
});
｝流程就是这样了，最后附上个人完整代码
public class SettingAdapter extends RecyclerView.Adapter<SettingAdapter.MyViewHolder> implements OnRecyclerItemClick{
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(context).inflate(R.layout.personal_setting_recyclerview, parent, false);
MyViewHolder holder = new MyViewHolder(v);
v.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onItemClick(v,(int) v.getTag());
}
});
return holder;
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
//设置tag为position
holder.itemView.setTag(position);
holder.tv1.setText(datas[position]);
if (position==0){
holder.tv2.setVisibility(View.VISIBLE);
holder.tv2.setText("修改个人资料");
holder.iv1.setVisibility(View.VISIBLE);
//1.头像的加载
}
if (position==1){
holder.tv2.setVisibility(View.VISIBLE);
holder.tv2.setText("评论，＋关注，系统通知开关");
holder.iv2.setVisibility(View.INVISIBLE);
holder.tb.setVisibility(View.VISIBLE);
holder.tb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
//通知开关
if (isChecked){
Toast.makeText(context, "打开通知", Toast.LENGTH_SHORT).show();
}else {
Toast.makeText(context, "关闭通知", Toast.LENGTH_SHORT).show();
}
}
});
}
if (position==datas.length-1){
holder.tv3.setVisibility(View.VISIBLE);
// 缓存
holder.tv3.setText(CacheMannger.getCacheSize(context));
}
}
@Override
public int getItemCount() {
return datas.length;
}
@Override
public void onItemClick(View view, int tag) {
Intent itent = null;
switch(tag){
case 0:
itent = new Intent(instance,PersonalInfoSetActivity.class);
break;
case 1:
break;
case 2:
break;
case 3:
break;
case 4:
break;
case 5:
break;
}
if (itent!=null){
instance.startActivity(itent);
}else {
Toast.makeText(context, "还没设置点击事件 item"+tag, Toast.LENGTH_SHORT).show();
}
}
public class MyViewHolder extends RecyclerView.ViewHolder {
@BindView(R.id.recyclerview_tv1) TextView tv1;
@BindView(R.id.recyclerview_tv2) TextView tv2;
@BindView(R.id.recyclerview_tv3) TextView tv3;
@BindView(R.id.recyclerview_iv1) ImageView iv1;
@BindView(R.id.recyclerview_iv2) ImageView iv2;
@BindView(R.id.toggleButton) ToggleButton tb;
public MyViewHolder(View itemView) {
super(itemView);
ButterKnife.bind(this,itemView);
}
}
}