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Created April 24, 2017 11:42
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RecyclerView recycle test
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/recycler"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:layoutManager="LinearLayoutManager"
tools:context="com.fitivision.iot.p2p.ui.TheActivity"/>
<?xml version="1.0" encoding="utf-8"?>
<ImageView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/image"
android:padding="12dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="@mipmap/ic_launcher"/>
<?xml version="1.0" encoding="utf-8"?>
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/text"
android:padding="12dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
package com.fitivision.iot.p2p.ui;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import com.fitivision.iot.p2p.R;
public class Main2Activity extends AppCompatActivity {
private static final String TAG = "RVTestActivity";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
RecyclerView rv = (RecyclerView) findViewById(R.id.recycler);
rv.setAdapter(new TheAdapter());
}
public static class TheAdapter extends RecyclerView.Adapter<TheAdapter.ViewHolder> {
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if (viewType == R.layout.item_image)
return new ImageViewHolder(LayoutInflater.from(parent.getContext()).inflate(viewType, parent, false));
else
return new TextViewHolder(LayoutInflater.from(parent.getContext()).inflate(viewType, parent, false));
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.bind(position);
}
@Override
public int getItemCount() {
return 100;
}
@Override
public int getItemViewType(int position) {
if (position == 3)
return R.layout.item_image;
else
return R.layout.item_text;
}
@Override
public void onViewRecycled(ViewHolder holder) {
super.onViewRecycled(holder);
holder.recycle();
}
public static abstract class ViewHolder extends RecyclerView.ViewHolder {
public ViewHolder(View itemView) {
super(itemView);
}
public abstract void bind(int position);
public void recycle() {
Log.d(TAG, getClass().getSimpleName() + ".recycle(): " + getAdapterPosition());
}
}
public static class TextViewHolder extends ViewHolder {
private final TextView text;
public TextViewHolder(View itemView) {
super(itemView);
text = (TextView) itemView.findViewById(R.id.text);
}
@Override
public void bind(int position) {
text.setText("pos = " + position);
}
}
public static class ImageViewHolder extends ViewHolder {
private final ImageView image;
public ImageViewHolder(View itemView) {
super(itemView);
image = (ImageView) itemView.findViewById(R.id.image);
}
@Override
public void bind(int position) {
}
}
}
}
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