目前我有一个RecyclerView,可以打开Activity2
/ activity2.xml
。 activity2.xml
有一个textview。
我的问题是:如何根据我在Recyclerview中点击的项目,在activity2.xml
中设置文字?我也想设置一个图像,但现在可以等了。
我使用实现RecyclerView.ViewHolder
的{{1}}。
这是我的View.OnClickListener
RecyclerPracticeAdapter.java
RecyclerView.Adapter
activity2.xml
public class RecyclerPracticeAdapter extends RecyclerView.Adapter<MyViewHolder> {
Context c;
ArrayList<Category> category;
public RecyclerPracticeAdapter(Context c, ArrayList<Category> category) {
this.c = c;
this.category = category;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.model, null);
MyViewHolder holder = new MyViewHolder(v);
return holder;
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
holder.nameTxt.setText(category.get(position).getName());
holder.img.setImageResource(category.get(position).getImage());
//Listners
//THIS IS WHERE YOU CAN CHOOSE TO OPEN A ACTIVITY WHEN USER CLICK ON A CARDVIEW!!
holder.setItemClickListener(new ItemClickListener() {
@Override
public void onItemClick(View v, int pos) {
switch (pos) {
case 0:
// Open New Activity......
// THIS IS WHERE I WANT TO CHANGE TEXT activity2.xml
Intent intent=new Intent(v.getContext(),Activity2.class);
v.getContext().startActivity(intent);
break;
case 1:
Intent intent=new Intent(v.getContext(),Activity2.class);
v.getContext().startActivity(intent);
break;
}
}
});
}
@Override
public int getItemCount() {
return category.size();
}
}
有人可以指出我正确的方向吗?
EDIT :::
MyViewHolder:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Update Text"
android:id="@+id/txt_update"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_gravity="center_horizontal" />
</RelativeLayout>
类别:
public class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public ImageView img;
public TextView nameTxt;
ItemClickListener itemClickListener;
public MyViewHolder(View itemView) {
super(itemView);
nameTxt= (TextView) itemView.findViewById(R.id.nameTxt);
img= (ImageView) itemView.findViewById(R.id.ppImage);
itemView.setOnClickListener(this);
}
public void setItemClickListener(ItemClickListener ic){
this.itemClickListener=ic;
}
@Override
public void onClick(View v) {
this.itemClickListener.onItemClick(v,getLayoutPosition());
}
}
答案 0 :(得分:2)
1.意图在onClick of item中传递数据。
Intent intent=new Intent(v.getContext(),Activity2.class);
intent.putExtra("YOUR_KEY", category.get(pos).getName());
v.getContext().startActivity(intent);
2.获取Activity2
。
Bundle bundle = getIntent().getExtras();
if(bundle!=null){
String text = bundle.getString("YOUR_KEY");
if(text!=null)
YOUR_TEXT_VIEW.setText(text);
}
答案 1 :(得分:0)
您只需要传递数据
Intent intent=new Intent(v.getContext(),Activity2.class);
intent.putExtra("value",category.get(pos).getName());
v.getContext().startActivity(intent);
在Activity2中你需要取值
String updatevalue = getIntent()。getExtras()。getString(&#34; value&#34;); TextView.setText(updatevalue);