qq的滑动删除效果很不错,要实现这种效果,可以使用swipelistview。
1. 下载com.fortysevendeg.swipelistview这个项目(以前github上有,现在github上没有了,百度了很多次才下载到的),导入eclipse,右键单击,选择properties->android,选中library下面的islibrary。
2. 新建一个项目myswipelistview,加入swipelistview这个库。
3. 在主窗体里面放入一个swipelistview控件:
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:paddingbottom="@dimen/activity_vertical_margin" android:paddingleft="@dimen/activity_horizontal_margin" android:paddingright="@dimen/activity_horizontal_margin" android:paddingtop="@dimen/activity_vertical_margin" tools:context="com.hzhi.myswipelistview.mainactivity" > <com.fortysevendeg.swipelistview.swipelistview xmlns:swipe="http://schemas.android.com/apk/res-auto" android:id="@+id/exampleswipelistview" android:listselector="#00000000" android:layout_width="fill_parent" android:layout_height="wrap_content" swipe:swipebackview="@+id/back" swipe:swipecloseallitemswhenmovelist="true" swipe:swipedrawablechecked="@drawable/choice_selected" swipe:swipedrawableunchecked="@drawable/choice_unselected" swipe:swipefrontview="@+id/front" swipe:swipemode="both" swipe:swipeactionleft="reveal" swipe:swipeactionright="dismiss" swipe:swipeopenonlongpress="true" /> </linearlayout>
其中两个重要的属性:
swipe:swipefrontview:上面的view,即不滑动时显示的view。
swipe:swipebackview:下面的view,即滑动后显示的view。
这两个view都定义在swipelistview的行布局文件里面:
<?xml version="1.0" encoding="utf-8"?> <framelayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" > <linearlayout android:id="@+id/back" android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="#ffcccccc" android:gravity="right" android:tag="back" > <button android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/btn_delete" android:text="删除"/> <button android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/btn_update" android:text="更新"/> </linearlayout> <relativelayout android:orientation="vertical" android:id="@+id/front" android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="#ffffffff" > <imageview android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/example_row_iv_image"/> <textview android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_torightof="@id/example_row_iv_image" android:id="@+id/example_row_tv_title"/> <textview android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_torightof="@id/example_row_iv_image" android:layout_below="@id/example_row_tv_title" android:id="@+id/example_row_tv_description"/> </relativelayout> </framelayout>
swipelistview的行布局文件使用framelayout布局,framelayout里面所有的所有子元素都堆叠在framelayout的左上角。
4. swipelistview和其他listview一样,也需要adapter,使用方法也是一样的。这里就不详细讲了。
5. 在主窗体java文件中实现swipelistview的功能,代码如下:
package com.hzhi.myswipelistview; import android.support.v7.app.actionbaractivity; import android.util.log; import java.util.arraylist; import com.fortysevendeg.swipelistview.baseswipelistviewlistener; import com.fortysevendeg.swipelistview.swipelistview; import android.os.bundle; @suppresswarnings("deprecation") public class mainactivity extends actionbaractivity { protected static final string tag = "myswipelistview"; private arraylist<string> mlist; private myadapter madapter; private swipelistview mswipelistview; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); initdata(); mswipelistview = (swipelistview) findviewbyid(r.id.exampleswipelistview); madapter = new myadapter(this, mlist, mswipelistview); mswipelistview.setadapter(madapter); mswipelistview.setswipelistviewlistener(new baseswipelistviewlistener(){ @override public void onchoicechanged(int position, boolean selected) { log.d(tag, "onchoicechanged:" + position + ", " + selected); } @override public void onchoiceended() { log.d(tag, "onchoiceended"); } @override public void onchoicestarted() { log.d(tag, "onchoicestarted"); } @override public void onclickbackview(int position) { log.d(tag, "onclickbackview:" + position); } @override public void onclickfrontview(int position) { log.d(tag, "onclickfrontview:" + position); } @override public void onclosed(int position, boolean fromright) { log.d(tag, "onclosed:" + position + "," + fromright); } @override public void ondismiss(int[] reversesortedpositions) { log.d(tag, "ondismiss"); } @override public void onfirstlistitem() { log.d(tag, "onfirstlistitem"); } @override public void onlastlistitem() { log.d(tag, "onlastlistitem"); } @override public void onlistchanged() { log.d(tag, "onlistchanged"); mswipelistview.closeopeneditems(); } @override public void onmove(int position, float x) { log.d(tag, "onmove:" + position + "," + x); } @override public void onopened(int position, boolean toright) { log.d(tag, "onopened:" + position + "," + toright); } @override public void onstartclose(int position, boolean right) { log.d(tag, "onstartclose:" + position + "," + right); } @override public void onstartopen(int position, int action, boolean right) { log.d(tag, "onstartopen:" + position + "," + action + "," + right); } }); } private void initdata(){ mlist = new arraylist<string>(); for (int i = 0; i <= 10; i++) mlist.add("这是第" + i +"条数据!"); } }
最主要的代码即mswipelistview.setswipelistviewlistener(new baseswipelistviewlistener(){}),通过这行代码,为swipelistview控件设置了listener,可以根据自己的需要重载baseswipelistviewlistener的各种方法。
运行结果:
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