ListView的注册点击事件2
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ListView的注册点击事件2
使用接口回调和使用抽象类回调
接口回调
Adapter
public class ContentAdapter extends BaseAdapter implements OnClickListener { private static final String TAG = "ContentAdapter"; private List<String> mContentList; private LayoutInflater mInflater; private Callback mCallback; /** * 自定义接口,用于回调按钮点击事件到Activity * @author Ivan Xu * 2014-11-26 */ public interface Callback { public void click(View v); } public ContentAdapter(Context context, List<String> contentList, Callback callback) { mContentList = contentList; mInflater = LayoutInflater.from(context); mCallback = callback; } @Override public int getCount() { Log.i(TAG, "getCount"); return mContentList.size(); } @Override public Object getItem(int position) { Log.i(TAG, "getItem"); return mContentList.get(position); } @Override public long getItemId(int position) { Log.i(TAG, "getItemId"); return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { Log.i(TAG, "getView"); ViewHolder holder = null; if (convertView == null) { convertView = mInflater.inflate(R.layout.list_item, null); holder = new ViewHolder(); holder.textView = (TextView) convertView .findViewById(R.id.textView1); holder.button = (Button) convertView.findViewById(R.id.button1); convertView.setTag(holder); } else { holder = (ViewHolder) convertView.getTag(); } holder.textView.setText(mContentList.get(position)); holder.button.setOnClickListener(this); holder.button.setTag(position); return convertView; } public class ViewHolder { public TextView textView; public Button button; } //响应按钮点击事件,调用子定义接口,并传入View @Override public void onClick(View v) { mCallback.click(v); }}Activity类
public class MainActivity extends Activity implements OnItemClickListener, Callback { // 模拟listview中加载的数据 private static final String[] CONTENTS = { "北京", "上海", "广州", "深圳", "苏州", "南京", "武汉", "长沙", "杭州" }; private List<String> contentList; private ListView mListView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); init(); } private void init() { mListView = (ListView) findViewById(R.id.listview); contentList = new ArrayList<String>(); for (int i = 0; i < CONTENTS.length; i++) { contentList.add(CONTENTS[i]); } // mListView.setAdapter(new ContentAdapter(this, contentList, this)); mListView.setOnItemClickListener(this); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } /** * 响应ListView中item的点击事件 */ @Override public void onItemClick(AdapterView<?> arg0, View v, int position, long id) { Toast.makeText(this, "listview的item被点击了!,点击的位置是-->" + position, Toast.LENGTH_SHORT).show(); } /** * 接口方法,响应ListView按钮点击事件 */ @Override public void click(View v) { Toast.makeText( MainActivity.this, "listview的内部的按钮被点击了!,位置是-->" + (Integer) v.getTag() + ",内容是-->" + contentList.get((Integer) v.getTag()), Toast.LENGTH_SHORT).show(); }}
抽象类回调
adapter
public class ContentAdapter extends BaseAdapter { private static final String TAG = "ContentAdapter"; private List<String> mContentList; private LayoutInflater mInflater; private MyClickListener mListener; public ContentAdapter(Context context, List<String> contentList, MyClickListener listener) { mContentList = contentList; mInflater = LayoutInflater.from(context); mListener = listener; } @Override public int getCount() { Log.i(TAG, "getCount"); return mContentList.size(); } @Override public Object getItem(int position) { Log.i(TAG, "getItem"); return mContentList.get(position); } @Override public long getItemId(int position) { Log.i(TAG, "getItemId"); return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { Log.i(TAG, "getView"); ViewHolder holder = null; if (convertView == null) { convertView = mInflater.inflate(R.layout.list_item, null); holder = new ViewHolder(); holder.textView = (TextView) convertView .findViewById(R.id.textView1); holder.button = (Button) convertView.findViewById(R.id.button1); convertView.setTag(holder); } else { holder = (ViewHolder) convertView.getTag(); } holder.textView.setText(mContentList.get(position)); holder.button.setOnClickListener(mListener); holder.button.setTag(position); return convertView; } public class ViewHolder { public TextView textView; public Button button; } /** * 用于回调的抽象类 * @author Ivan Xu * 2014-11-26 */ public static abstract class MyClickListener implements OnClickListener { /** * 基类的onClick方法 */ @Override public void onClick(View v) { myOnClick((Integer) v.getTag(), v); } public abstract void myOnClick(int position, View v); }}Activity
public class MainActivity extends Activity implements OnItemClickListener { // 模拟listview中加载的数据 private static final String[] CONTENTS = { "北京", "上海", "广州", "深圳", "苏州", "南京", "武汉", "长沙", "杭州" }; private List<String> contentList; private ListView mListView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); init(); } private void init() { mListView = (ListView) findViewById(R.id.listview); contentList = new ArrayList<String>(); for (int i = 0; i < CONTENTS.length; i++) { contentList.add(CONTENTS[i]); } //实例化ContentAdapter类,并传入实现类 mListView.setAdapter(new ContentAdapter(this, contentList, mListener)); mListView.setOnItemClickListener(this); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } //响应item点击事件 @Override public void onItemClick(AdapterView<?> arg0, View v, int position, long id) { Toast.makeText(this, "listview的item被点击了!,点击的位置是-->" + position, Toast.LENGTH_SHORT).show(); } /** * 实现类,响应按钮点击事件 */ private MyClickListener mListener = new MyClickListener() { @Override public void myOnClick(int position, View v) { Toast.makeText( MainActivity.this, "listview的内部的按钮被点击了!,位置是-->" + position + ",内容是-->" + contentList.get(position), Toast.LENGTH_SHORT) .show(); } };}
本人只会这几种,其他的就不知道了,希望大家多多交流,可以帮助你......
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