DataBinding在listview中的使用
- xml布局(这里以GridView为例)
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="tsou.cn.databinding.DynamicActivity">
<GridView
android:id="@+id/gridView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:numColumns="3" />
</FrameLayout>
</layout>
- 构建Adapter
package tsou.cn.databinding.adapter;
import android.content.Context;
import android.databinding.DataBindingUtil;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import java.util.ArrayList;
import java.util.List;
import tsou.cn.databinding.BR;
import tsou.cn.databinding.R;
import tsou.cn.databinding.databinding.ItemmBinding;
/**
* Created by 黄家三少 on 2018/5/30.
*/
public class MMyAdapter extends BaseAdapter{
private LayoutInflater inflater;
private List<String> mlist;
public View.OnClickListener itemClickListener;
private ItemmBinding binding;
public MMyAdapter(Context context) {
inflater = LayoutInflater.from(context);
mlist = new ArrayList<String>();
for (int i = 0; i < 100; i++) {
mlist.add(i, "item" + i);
}
}
@Override
public int getCount() {
return mlist == null ? 0 : mlist.size();
}
@Override
public Object getItem(int position) {
return mlist.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
binding = DataBindingUtil.inflate(inflater, R.layout.itemm, parent, false);
convertView = binding.getRoot();
convertView.setTag(binding);
} else {
binding = (ItemmBinding) convertView.getTag();
}
binding.setVariable(BR.item, mlist.get(position));
binding.setMyAdapter(this);
return convertView;
}
public void setOnclickListener(View.OnClickListener itemClickListener) {
this.itemClickListener = itemClickListener;
}
}
- item布局
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<data>
<variable
name="item"
type="String" />
<variable
name="myAdapter"
type="tsou.cn.databinding.adapter.MMyAdapter" />
</data>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
app:text="@{item}"
app:onClickListener="@{myAdapter.itemClickListener}"/>
</LinearLayout>
</layout>
- activity中调用
package tsou.cn.databinding;
import android.databinding.DataBindingUtil;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Toast;
import tsou.cn.databinding.adapter.MMyAdapter;
import tsou.cn.databinding.databinding.ActivityDynamicBinding;
public class DynamicActivity extends AppCompatActivity implements View.OnClickListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ActivityDynamicBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_dynamic);
MMyAdapter adapter = new MMyAdapter(getBaseContext());
adapter.setOnclickListener(this);
binding.gridView.setAdapter(adapter);
}
@Override
public void onClick(View v) {
Toast.makeText(getBaseContext(), v.getClass().getSimpleName(), Toast.LENGTH_SHORT).show();
}
}
- 效果
Demo地址:https://download.csdn.net/download/huangxiaoguo1/10454497