PullToRefreshListView增加侧滑删除功能
直接上步骤：
一：使用PullToRefreshListView实现上拉加载和下拉刷新
首先下载PullToRefreshListView：下载源码（https://github.com/chrisbanes/Android-PullToRefresh）；
然后将该类库导入到项目中（导入方法就不再多说了）；
xml文件中添加代码：
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fadingEdge="none"
android:fastScrollEnabled="false"
android:headerDividersEnabled="false"
android:smoothScrollbar="true"
android:transcriptMode="normal"
android:divider="@null" />
在Activity代码中：
private PullToRefreshListView lv_message;//下拉刷新
lv_message = (PullToRefreshListView) findViewById(R.id.lv_groupconversation_message);
lv_message.setMode(PullToRefreshBase.Mode.BOTH);//设置上拉加载还是下拉刷新
lv_message.setOnRefreshListener(new RefreshForOldItemListener);//设置监听
lv_message.setAdapter(new BaseAdapter);//设置要显示的数据
// 监听下拉刷新的listener
private class ReFreshForOldItemListener implements
PullToRefreshBase.OnRefreshListener2<ListView> {
@Override
public void onPullDownToRefresh(PullToRefreshBase refreshView) {
//下拉刷新，相当于重新加载
}
@Override
public void onPullUpToRefresh(PullToRefreshBase refreshView) {
//上拉加载
}
} 二：添加侧滑删除
listview中每一个item的xml文件：
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:descendantFocusability="blocksDescendants"//这一句必须加上，否则删除按钮点击没有反应
android:layout_height="68dip" >
<LinearLayout
android:id="@+id/conversatinListview_back"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center|right"
android:orientation="horizontal" >
<Button
android:id="@+id/conversationlist_delete"
android:layout_width="70dip"
android:layout_height="60dip"
android:gravity="center"
android:text="删除"
android:background="#f70c34"
android:textColor="@color/white"
android:textSize="15sp" />//侧滑显示出来的删除按钮
LinearLayout>
<LinearLayout
android:id="@+id/conversatinListview_front"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#fff"
android:orientation="horizontal" >
<RelativeLayout
android:layout_width="50dip"
android:layout_height="50dip"
android:layout_gravity="center"
android:paddingLeft="10.0dip" >
<ImageView
android:id="@+id/conversationItem_img"
android:layout_width="40dip"
android:layout_height="40dip"
android:src="@drawable/bg_navigation"/>
RelativeLayout>
<RelativeLayout
android:layout_width="0dip"
android:layout_height="60dip"
android:layout_margin="10dip"
android:layout_marginTop="15dip"
android:layout_weight="8" >
<TextView
android:id="@+id/conversationItem_name"
android:layout_width="wrap_content"
android:layout_height="20dip"
android:singleLine="true"
android:layout_marginLeft="4dip"
android:text="曙光已在我眼前："/>
<TextView
android:id="@+id/atme"
android:layout_width="wrap_content"
android:layout_height="20dip"
android:maxWidth="70dip"
android:singleLine="true"
android:ellipsize="end"
android:textSize="15sp"
android:text="\@了你"
android:layout_toRightOf="@+id/conversationItem_name"
android:layout_alignBaseline="@+id/conversationItem_name"/>
RelativeLayout>
LinearLayout>
FrameLayout>在Activity的BaseAdapter中：
linearLayout = (LinearLayout) convertView.findViewById(R.id.conversatinListview_front);//获取需要滑动的item
linearLayout.setOnTouchListener(new View.OnTouchListener() {
private Point pointDownPoint;
private Point pointUpPoint;
private boolean isdelete;
boolean result = false;
boolean isOpen = false;
@Override
public boolean onTouch(View v, MotionEvent event) {
int bottomWidth = btn_delete.getWidth();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
// Log.i("", "ACTION_DOWN");
downX = (int) event.getRawX();
result = true;
break;
case MotionEvent.ACTION_MOVE:
// Log.i("", "ACTION_MOVE");
// if (isAniming)
// break;
int dx = (int) (event.getRawX() - downX);
// Log.i("", "dy___" + dx);
if (isOpen) {
// 打开状态
// 向右滑动
if (dx > 0 && dx < bottomWidth) {
v.setTranslationX(dx - bottomWidth);
// 允许移动，阻止点击
result = true;
}
} else {
// 闭合状态
// 向左移动
if (dx < 0 && Math.abs(dx) < bottomWidth) {
v.setTranslationX(dx);
// 允许移动，阻止点击
result = true;
}
}
break;
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_UP:
// Log.i("", "ACTION_UP" + v.getTranslationX());
// 获取已经移动的
float ddx = v.getTranslationX();
// 判断打开还是关闭
if (ddx <= 0 && ddx > -(bottomWidth / 2)) {
// 关闭
ObjectAnimator oa1 = ObjectAnimator.ofFloat(v, "translationX", ddx, 0).setDuration(100);
oa1.start();
oa1.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {
}
@Override
public void onAnimationRepeat(Animator animation) {
}
@Override
public void onAnimationEnd(Animator animation) {
isOpen = false;
result = false;
}
@Override
public void onAnimationCancel(Animator animation) {
isOpen = false;
result = false;
}
});
}
if (ddx <= -(bottomWidth / 2) && ddx > -bottomWidth) {
// 打开
ObjectAnimator oa1 = ObjectAnimator.ofFloat(v, "translationX", ddx, -bottomWidth)
.setDuration(100);
oa1.start();
result = true;
isOpen = true;
}
break;
}
return result;
}
});