前言
網上listview上下拖動的例子有，效果也很好，但是項目要橫着拖的，隻要硬着頭皮自己寫（主要是沒找到合适的），參考文章1修改而來，分享一下。
聲明
歡迎轉載，但請保留文章原始出處:)
部落格園：http://www.cnblogs.com
農民伯伯： http://over140.cnblogs.com
正文
截圖
代碼
java
public class hodragactivity extends activity {
private linearlayout main;
private gesturedetector mgesturedetector;
@override
public void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.main_cc);
main = (linearlayout) findviewbyid(r.id.main);
binddraplistener(r.id.myimage1);
binddraplistener(r.id.myimage2);
binddraplistener(r.id.myimage3);
binddraplistener(r.id.myimage4);
binddraplistener(r.id.myimage5);
binddraplistener(r.id.myimage6);
binddraplistener(r.id.myimage7);
binddraplistener(r.id.myimage8);
binddraplistener(r.id.myimage9);
binddraplistener(r.id.myimage10);
binddraplistener(r.id.myimage11);
binddraplistener(r.id.myimage12);
mgesturedetector = new gesturedetector(this, new drapgesturelistener());
}
private view mdrapview;
private void binddraplistener(int id) {
view v = findviewbyid(id);
v.setontouchlistener(montouchlistener);
v.setondraglistener(mondraglistener);
private ontouchlistener montouchlistener = new ontouchlistener() {
@override
public boolean ontouch(view v, motionevent event) {
mdrapview = v;
if (mgesturedetector.ontouchevent(event))
return true;
switch (event.getaction() & motionevent.action_mask) {
case motionevent.action_up:
break;
}
return false;
}
};
private ondraglistener mondraglistener = new ondraglistener() {
public boolean ondrag(view v, dragevent event) {
switch (event.getaction()) {
case dragevent.action_drag_started:
// do nothing
case dragevent.action_drag_entered:
v.setalpha(0.5f);
case dragevent.action_drag_exited:
v.setalpha(1f);
case dragevent.action_drop:
view view = (view) event.getlocalstate();
for (int i = 0, j = main.getchildcount(); i < j; i++) {
if (main.getchildat(i) == v) {
// 目前位置
main.removeview(view);
main.addview(view, i);
break;
}
}
case dragevent.action_drag_ended:
default:
return true;
private class drapgesturelistener extends simpleongesturelistener {
public boolean onsingletapconfirmed(motionevent e) {
return super.onsingletapconfirmed(e);
public void onlongpress(motionevent e) {
super.onlongpress(e);
clipdata data = clipdata.newplaintext("", "");
mydragshadowbuilder shadowbuilder = new mydragshadowbuilder(
mdrapview);
mdrapview.startdrag(data, shadowbuilder, mdrapview, 0);
public boolean ondown(motionevent e) {
private class mydragshadowbuilder extends view.dragshadowbuilder {
private final weakreference<view> mview;
public mydragshadowbuilder(view view) {
super(view);
mview = new weakreference<view>(view);
public void ondrawshadow(canvas canvas) {
canvas.scale(1.5f, 1.5f);
super.ondrawshadow(canvas);
public void onprovideshadowmetrics(point shadowsize,
point shadowtouchpoint) {
// super.onprovideshadowmetrics(shadowsize, shadowtouchpoint);
final view view = mview.get();
if (view != null) {
shadowsize.set((int) (view.getwidth() * 1.5f),
(int) (view.getheight() * 1.5f));
shadowtouchpoint.set(shadowsize.x / 2, shadowsize.y / 2);
} else {
// log.e(view.view_log_tag,
// "asked for drag thumb metrics but no view");
}
代碼說明
1、 mydragshadowbuilder主要用于縮放拖拽的imageview，這裡放大了1.5倍，而又不至于影響原控件，這裡是放大兩倍
2、這裡是通過長按來喚起拖拽操作，是以監聽了onlongpress
3、注意拖拽ondraglistener是android 3.0才新增的api
文章
下載下傳
結束
歡迎交流！想做成拖動插入時自動兩邊擠開的效果，沒弄出來，出來是抖動的效果。
轉載：http://www.cnblogs.com/over140/p/3599319.html