Android(安卓)UI控件之ListView实现圆角效果

今天在Android群里面有人再求圆角ListView的实现方式，正好自己以前实现过。因此就共享了

现在将其实现方式写在博客中共他人学习。给出实现方式之前顺带加点自己的想法，感觉上android

中方形的ListView还是太“硬性”，没有圆角的有亲和力。连Apple也为了“圆角”这个设计去申请专利

看来圆角确实比较适合现在人们的喜好吧。

照老规矩先上两张效果图吧：

第一张：

第二张：

该方式主要就是需要重新去实现自己的ListView代码如下：

package com.kiritor.corner_listview;   import android.content.Context; import android.util.AttributeSet; import android.view.MotionEvent; import android.widget.AdapterView; import android.widget.ListView;  /***  * 自定义listview  *   * @author Kiritor  *   */ public class MyListView extends ListView { public MyListView(Context context) { super(context); }  public MyListView(Context context, AttributeSet attrs) { super(context, attrs); }  /****  * 拦截触摸事件  */ @Override public boolean onTouchEvent(MotionEvent ev) { switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: int x = (int) ev.getX(); int y = (int) ev.getY(); int itemnum = pointToPosition(x, y); if (itemnum == AdapterView.INVALID_POSITION) break; else { if (itemnum == 0) { if (itemnum == (getAdapter().getCount() - 1)) { // 只有一项数据，设置背景设置为圆角的 setSelector(R.drawable.list_round); } else { // 第一项，设置为上面为圆角的 setSelector(R.drawable.list_top_round); } } else if (itemnum == (getAdapter().getCount() - 1)) // 最后一项，设置为下面为圆角的 setSelector(R.drawable.list_bottom_round); else { // 中间项，不用设置为圆角 setSelector(R.drawable.list_center_round); } } break; case MotionEvent.ACTION_UP: break; } return super.onTouchEvent(ev); } }

MainActivity

package com.kiritor.corner_listview;  import java.util.ArrayList; import java.util.HashMap; import java.util.Map;    import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.ViewGroup; import android.view.Window; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ArrayAdapter; import android.widget.ListAdapter; import android.widget.ListView; import android.widget.SimpleAdapter; import android.widget.Toast;  public class MainActivity extends Activity implements OnItemClickListener { private MyListView listView_1, listView_2, listView_3; private ArrayList> listData, listData2, listData3; private SimpleAdapter adapter;  @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.main); listView_1 = (MyListView) findViewById(R.id.mylistview_1); listView_2 = (MyListView) findViewById(R.id.mylistview_2); listView_3 = (MyListView) findViewById(R.id.mylistview_3);  listView_1.setAdapter(getSimpleAdapter_1()); listView_2.setAdapter(getSimpleAdapter_2()); listView_3.setAdapter(getSimpleAdapter_3());  listView_1.setOnItemClickListener(this); listView_2.setOnItemClickListener(this); listView_3.setOnItemClickListener(this);  setListViewHeightBasedOnChildren(listView_1); setListViewHeightBasedOnChildren(listView_2); setListViewHeightBasedOnChildren(listView_3); }  /**  * 设置第一列数据  */ private SimpleAdapter getSimpleAdapter_1() { listData = new ArrayList>();  Map map = new HashMap(); map.put("text", "天气动画"); listData.add(map);  map = new HashMap(); map.put("text", "通知栏天气"); listData.add(map);  return new SimpleAdapter(MainActivity.this, listData, R.layout.list_item, new String[] { "text" }, new int[] { R.id.tv_list_item });  }  /**  * 设置第二列数据  */ private SimpleAdapter getSimpleAdapter_2() { listData2 = new ArrayList>();  Map map = new HashMap(); map.put("text", "桌面插件"); listData2.add(map);  map = new HashMap(); map.put("text", "绑定微博"); listData2.add(map);  map = new HashMap(); map.put("text", "天气分享"); listData2.add(map);  map = new HashMap(); map.put("text", "通知与提示"); listData2.add(map);  map = new HashMap(); map.put("text", "定时播报"); listData2.add(map);  return new SimpleAdapter(MainActivity.this, listData2, R.layout.list_item, new String[] { "text" }, new int[] { R.id.tv_list_item });  }  /**  * 设置第三列数据  */ private SimpleAdapter getSimpleAdapter_3() { listData3 = new ArrayList>();  Map map = new HashMap(); map.put("text", "检查新版本"); listData3.add(map);  map = new HashMap(); map.put("text", "发送建议"); listData3.add(map);  map = new HashMap(); map.put("text", "帮助"); listData3.add(map);  map = new HashMap(); map.put("text", "关于"); listData3.add(map);  return new SimpleAdapter(MainActivity.this, listData3, R.layout.list_item, new String[] { "text" }, new int[] { R.id.tv_list_item });  }  /***  * 动态设置listview的高度  *   * @param listView  */ public void setListViewHeightBasedOnChildren(ListView listView) { ListAdapter listAdapter = listView.getAdapter(); if (listAdapter == null) { return; } int totalHeight = 0; for (int i = 0; i < listAdapter.getCount(); i++) { View listItem = listAdapter.getView(i, null, listView); listItem.measure(0, 0); totalHeight += listItem.getMeasuredHeight(); } ViewGroup.LayoutParams params = listView.getLayoutParams(); params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1)); // params.height += 5;// if without this statement,the listview will be // a // little short // listView.getDividerHeight()获取子项间分隔符占用的高度 // params.height最后得到整个ListView完整显示需要的高度 listView.setLayoutParams(params); }  @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) {  if (parent == listView_1) { Map map = listData.get(position); Toast.makeText(MainActivity.this, map.get("text"), 1).show(); } else if (parent == listView_2) { Map map = listData2.get(position); Toast.makeText(MainActivity.this, map.get("text"), 1).show(); } else if (parent == listView_3) { Map map = listData3.get(position); Toast.makeText(MainActivity.this, map.get("text"), 1).show(); }  }  }

差不多也就是这样了，还有相关资源文件

这里就不一一给出了

完整源码部分：

http://download.csdn.net/detail/kiritor/5176655

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