public class MainActivity extends AppCompatActivity {
RecyclerView recyclerView;
BaseAdapter adapter1,adapter2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = $(R.id.recyclerView);
recyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));
adapter1 = new BaseAdapter(Source.get("left"));
adapter2 = new BaseAdapter(Source.get("right"));
Button button1 = $(R.id.button1);
Button button2 = $(R.id.button2);
recyclerView.setAdapter(adapter1);
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
recyclerView.swapAdapter(adapter1,false);
}
});
button2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
recyclerView.swapAdapter(adapter2,false);
}
});
}
@SuppressWarnings("unchecked")
public <T> T $(int resId) {
return (T) findViewById(resId);
}
class BaseAdapter extends RecyclerView.Adapter{
List<String> data;
public BaseAdapter(List<String> data) {
super();
this.data = data;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new BaseViewHolder(new TextView(parent.getContext()));
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
((BaseViewHolder) holder).render(data.get(position));
}
@Override
public int getItemCount() {
return data.size();
}
class BaseViewHolder extends RecyclerView.ViewHolder{
TextView textView;
public BaseViewHolder(View itemView) {
super(itemView);
textView = ((TextView) itemView);
}
public void render(String name){
textView.setText(name);
}
}
}
static class Source{
public static List<String> get(String name){
List<String> list = new ArrayList<>();
int size = (int) (10 + Math.random() * 100);
for (int i = 0; i < size; i++) {
list.add(name + i);
}
return list;
}
}
}
demo for swapAdapter
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平台声明:文章内容(如有图片或视频亦包括在内)由作者上传并发布,文章内容仅代表作者本人观点,简书系信息发布平台,仅提供信息存储服务。
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