在使用ListView的时候，我们通常会使用到其item的点击事件。而有些时候我们可能会用到item内部控件的点击操作，比如在item内部有个Button，当点击该Button时，删除所在的item。
效果图如下图所示
怎么实现这个操作呢？先来看下代码： 先看布局文件activity_main.xml 只有一个ListView
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <ListView android:id="@+id/listView" android:layout_width="match_parent" android:layout_height="wrap_content" /> </LinearLayout>再看ListView的item布局文件list_item.xml 包括了一个TextView和一个Button 其中Button添加了一个属性android:focusable=”false” 目的是为了不让Button强制获取item的焦点，否则item的点击事件就没用了
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal"> <TextView android:id="@+id/item_tv" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:text="this is text" android:textSize="24dp"/> <Button android:focusable="false" android:id="@+id/item_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="删除"/> </LinearLayout>自定义适配器MyAdapter.java 其中使用了接口回调，当点击删除按钮的时候，将点击item的position作为参数传出去
public class MyAdapter extends BaseAdapter { private Context mContext; private List<String> mList = new ArrayList<>(); public MyAdapter(Context context, List<String> list) { mContext = context; mList = list; } @Override public int getCount() { return mList.size(); } @Override public Object getItem(int i) { return mList.get(i); } @Override public long getItemId(int i) { return i; } @Override public View getView(final int i, View view, ViewGroup viewGroup) { ViewHolder viewHolder = null; if (view == null) { viewHolder = new ViewHolder(); view = LayoutInflater.from(mContext).inflate(R.layout.list_item, null); viewHolder.mTextView = (TextView) view.findViewById(R.id.item_tv); viewHolder.mButton = (Button) view.findViewById(R.id.item_btn); view.setTag(viewHolder); } else { viewHolder = (ViewHolder) view.getTag(); } viewHolder.mTextView.setText(mList.get(i)); viewHolder.mButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { mOnItemDeleteListener.onDeleteClick(i); } }); return view; } /** * 删除按钮的监听接口 */ public interface onItemDeleteListener { void onDeleteClick(int i); } private onItemDeleteListener mOnItemDeleteListener; public void setOnItemDeleteClickListener(onItemDeleteListener mOnItemDeleteListener) { this.mOnItemDeleteListener = mOnItemDeleteListener; } class ViewHolder { TextView mTextView; Button mButton; } }最后是MainActivity.java
public class MainActivity extends AppCompatActivity { private ListView listView; private List<String> mList = new ArrayList<>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initList(); this.listView = (ListView) findViewById(R.id.listView); final MyAdapter adapter = new MyAdapter(MainActivity.this, mList); listView.setAdapter(adapter); //ListView item的点击事件 listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) { Toast.makeText(MainActivity.this, "Click item" + i, Toast.LENGTH_SHORT).show(); } }); //ListView item 中的删除按钮的点击事件 adapter.setOnItemDeleteClickListener(new MyAdapter.onItemDeleteListener() { @Override public void onDeleteClick(int i) { mList.remove(i); adapter.notifyDataSetChanged(); } }); } /** * 初始化数据 */ private void initList() { for (int i = 0; i < 20; i++) { mList.add(i + ""); } } }当点击删除按钮时，删除mList中的数据，并调用notifyDataSetChanged()方法刷新item数据，达到点击item内部删除按钮，以删除当前item的效果。
