Android 圆角Listview
使Listview更加好看些，新浪微博，腾讯的都是圆角的，最基本的技能了
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ffffff"
android:orientation="vertical" >
<com.xzq.roundlistview.CornerListView
android:id="@+id/listview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="10dip"
android:background="@drawable/shape_bg_listview"
android:cacheColorHint="#00000000" />
</LinearLayout>
list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TextView
android:id="@+id/textview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingBottom="10dip"
android:paddingLeft="10dip"
android:paddingTop="10dip"
android:textColor="#000000"
android:textSize="16dip" />
</RelativeLayout>
app_list_corner_round_bottom.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<gradient
android:angle="270"
android:endColor="#76D37B"
android:startColor="#B5E7B8" />
<corners
android:bottomLeftRadius="4dip"
android:bottomRightRadius="4dip" />
</shape>
app_list_corner_round_top.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<gradient
android:angle="270"
android:endColor="#76D37B"
android:startColor="#B5E7B8" />
<corners
android:topLeftRadius="4dip"
android:topRightRadius="4dip" />
</shape>
app_list_corner_round.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<gradient
android:angle="270"
android:endColor="#76D37B"
android:startColor="#B5E7B8" />
<corners
android:bottomLeftRadius="4dip"
android:bottomRightRadius="4dip"
android:topLeftRadius="4dip"
android:topRightRadius="4dip" />
</shape>
app_list_corner_shape.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<gradient
android:angle="270"
android:endColor="#76D37B"
android:startColor="#B5E7B8" />
</shape>
shape_bg_listview.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<gradient
android:angle="180"
android:endColor="#FFCCCCCC"
android:startColor="@android:color/white" />
<stroke
android:width="1px"
android:color="@color/gray" />
<solid android:color="@android:color/white" />
<corners
android:bottomLeftRadius="10px"
android:bottomRightRadius="10px"
android:topLeftRadius="10px"
android:topRightRadius="10px" />
</shape>
MainActivity.java
package com.xzq.roundlistview;
import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.view.Window;
public class MainActivity extends Activity {
private CornerListView listview;
private ArrayList<String> listData;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main);
listview = (CornerListView) findViewById(R.id.listview);
setListData();
listview.setAdapter(new CornerAdapter(this, listData));
}
/**
* 设置列表数据
*/
private void setListData() {
listData = new ArrayList<String>();
listData.add("下载目录");
}
}
package com.xzq.roundlistview;
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.AdapterView;
import android.widget.ListView;
/**
* 圆角Listview
*
*
*/
public class CornerListView extends ListView {
public CornerListView(Context context) {
super(context);
}
public CornerListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public CornerListView(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
int x = (int) ev.getX();
int y = (int) ev.getY();
int itemnum = pointToPosition(x, y);//将坐标点转换为列表中的位置
if (itemnum == AdapterView.INVALID_POSITION) {
break;
} else {
if (itemnum == 0) {//第一个位置
if (itemnum == (getAdapter().getCount() - 1)) {
setSelector(R.drawable.app_list_corner_round);
} else {
setSelector(R.drawable.app_list_corner_round_top);
}
} else if (itemnum == (getAdapter().getCount() - 1)) {//最后一个位置
setSelector(R.drawable.app_list_corner_round_bottom);
} else {//中间的位置
setSelector(R.drawable.app_list_corner_shape);
}
}
break;
case MotionEvent.ACTION_UP:
break;
}
return super.onInterceptTouchEvent(ev);
}
}
package com.xzq.roundlistview;
import java.util.ArrayList;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
class CornerAdapter extends BaseAdapter {
private ArrayList<String> listData;
private LayoutInflater inflater;
public CornerAdapter(Context context, ArrayList<String> listData) {
this.listData = listData;
inflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
return listData.size();
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (null == convertView) {
convertView = inflater.inflate(R.layout.list_item, null);
}
TextView textview = (TextView) convertView.findViewById(R.id.textview);
textview.setText(listData.get(position));
return convertView;
}
}