在Recycler View中无法从一个活动转到另一个活动 [英] Cant go from one activity to another in Recycler View
问题描述
Hello Every One我正在尝试使用针对Recycler视图的适配器类中的意图从一个活动转移到另一个活动但我得到了son = me这样做的错误,以下是错误:
1.PakistaniActivity不是一个封闭的课程。
2.Cannot resolve方法StatrActivity();
Hello Every One I am trying to move from one activity to another using intent in adaptor class of recycler view but I am getting son=me errors in doing so, Following are the errors: 1.PakistaniActivity is not a Enclosing class. 2.Cannot resolve method StatrActivity();
这是我的代码:
PakistaniActivity。 Java
PakistaniActivity.Java
package com.recycler.hp.navigationbar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
public class PakistaniActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pakistani);
RecyclerView rl=findViewById(R.id.list);
rl.setLayoutManager(new LinearLayoutManager(this));
String[] languges={"Badnamiyan", "song2","song3","song4","Song5","song6","song7","song8","song9"};
rl.setAdapter(new Adaptor(languges));
}
}
Adaptor.java
Adaptor.java
package com.recycler.hp.navigationbar;
import android.content.Intent;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.io.IOException;
import java.net.URL;
public class Adaptor extends RecyclerView.Adapter<Adaptor.viewholder> {
private String[] data;
public Adaptor(String[] data) {
this.data = data;
}
@Override
public viewholder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View view = inflater.inflate(R.layout.list_item1, parent, false);
return new viewholder(view);
}
@Override
public void onBindViewHolder(viewholder holder, final int position) {
String title = data[position];
holder.t.setText(title);
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
long x;
x=getItemId(position);
if(x==0)
{
Intent intent=new Intent(PakistaniActivity.this,Revival_Activity.class);
startActivity(intent);
}
}
});
}
@Override
public int getItemCount() {
return data.length;
}
public class viewholder extends RecyclerView.ViewHolder {
ImageView i;
TextView t;
public viewholder(View itemView) {
super(itemView);
i = itemView.findViewById(R.id.img1);
t = itemView.findViewById(R.id.main1);
}
}
}
推荐答案
尝试不在适配器内启动活动。您可以使用此适配器:
Try not starting activities inside the adapter. You can use this adapter:
public abstract class ClickableAdapter<VH extends RecyclerView.ViewHolder> extends RecyclerView.Adapter<VH> {
private ClickItemListener clickItemListener;
public void setClickItemListener(ClickItemListener clickItemListener) {
this.clickItemListener = clickItemListener;
}
@Override
public void onBindViewHolder(@NonNull final VH holder, int position) {
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (clickItemListener != null)
clickItemListener.onClickItem(holder.itemView, holder.getAdapterPosition());
else
throw new IllegalStateException("Click listener not set");
}
});
}
public interface ClickItemListener {
void onClickItem(View v, int position);
}
}
然后让你的适配器扩展我的:
Then make your adapter extend mine:
public class Adaptor extends ClickableAdapter<Adaptor.viewholder> {
private String[] data;
public Adaptor(String[] data) {
this.data = data;
}
@Override
public viewholder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View view = inflater.inflate(R.layout.list_item1, parent, false);
return new viewholder(view);
}
@Override
public void onBindViewHolder(viewholder holder, final int position) {
super.onBindViewHolder(holder,position);
String title = data[position];
holder.t.setText(title);
}
@Override
public int getItemCount() {
return data.length;
}
public class viewholder extends RecyclerView.ViewHolder {
ImageView i;
TextView t;
public viewholder(View itemView) {
super(itemView);
i = itemView.findViewById(R.id.img1);
t = itemView.findViewById(R.id.main1);
}
}
}
最后在您的活动可以设置适配器的行为:
Finally in your activity you can set the behaviour for the adapter:
Adaptor adapter = new Adaptor(languges)
rl.setAdapter(adapter);
adapter.setClickItemListener(new ClickableAdapter.ClickItemListener() {
@Override
public void onClickItem(View v, int position) {
if(position==0)
{
Intent intent=new Intent(PakistaniActivity.this,Revival_Activity.class);
startActivity(intent);
}
}
});
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