本文实例讲述了android编程实现仿qq发表说说，上传照片及弹出框效果。分享给大家供大家参考，具体如下：
代码很简单,主要就是几个动画而已,图标什么的就随便找了几个,效果图:
动画说明:
1.点击右上角按钮,菜单从顶部下拉弹出,同时背景变暗;
2.再次点击右上角按钮,点击返回键,或者点击空白区域(也就是变暗的部分),菜单向上收回;
3.点击菜单上的按钮响应事件,同时菜单收回(效果同2)
重要说明：动画结束后必须clearanimation，否则隐藏状态的view依然能响应点击事件
主体代码:
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public class mainactivity extends activity {
//添加数据按钮
private imageview adddataiv;
//下拉功能菜单
private linearlayout dropdownview;
private view bgview;
//当前下拉菜单是否为显示状态
private boolean showitems = false;
@override
protected void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.activity_main);
adddataiv = (imageview) findviewbyid(r.id.main_newdata);
dropdownview = (linearlayout) findviewbyid(r.id.dropdownview);
bgview = findviewbyid(r.id.main_bg);
adddataiv.setonclicklistener(new view.onclicklistener() {
@override
public void onclick(view v) {
if (!showitems) {
showview();
} else {
dismissview();
}
}
});
//点击空白隐藏弹出框
bgview.setonclicklistener(new view.onclicklistener() {
@override
public void onclick(view v) {
if (showitems) {
dismissview();
}
}
});
//下拉功能菜单上按钮的点击事件
view.onclicklistener l = new onclickimpl();
findviewbyid(r.id.dropdown_item1).setonclicklistener(l);
findviewbyid(r.id.dropdown_item2).setonclicklistener(l);
findviewbyid(r.id.dropdown_item3).setonclicklistener(l);
findviewbyid(r.id.dropdown_item4).setonclicklistener(l);
}
//显示下拉菜单
private void showview() {
showitems = true;
adddataiv.startanimation(animationutils.loadanimation(mainactivity.this, r.anim.rotate_open));
dropdownview.startanimation(animationutils.loadanimation(this, r.anim.drop_down));
dropdownview.setvisibility(view.visible);
bgview.startanimation(animationutils.loadanimation(mainactivity.this, r.anim.fade_dark));
bgview.setvisibility(view.visible);
}
//隐藏下拉菜单
private void dismissview() {
showitems = false;
adddataiv.startanimation(animationutils.loadanimation(mainactivity.this, r.anim.rotate_close));
animation dropupanim = animationutils.loadanimation(this, r.anim.drop_up);
dropupanim.setanimationlistener(new animlistenerimpl(dropdownview));
dropdownview.startanimation(dropupanim);
dropdownview.setvisibility(view.invisible);
animation fadelightanim = animationutils.loadanimation(mainactivity.this, r.anim.fade_light);
fadelightanim.setanimationlistener(new animlistenerimpl(bgview));
bgview.startanimation(fadelightanim);
bgview.setvisibility(view.invisible);
}
//点击返回键时，如果下拉菜单是显示状态，则隐藏它
@override
public void onbackpressed() {
if (showitems) {
dismissview();
return;
}
super.onbackpressed();
}
private class onclickimpl implements view.onclicklistener {
@override
public void onclick(view v) {
if (!showitems) {
return;
}
int id = v.getid();
switch (id) {
case r.id.dropdown_item1:
toast.maketext(mainactivity.this, "item1 onclick", toast.length_short).show();
dismissview();
break;
case r.id.dropdown_item2:
toast.maketext(mainactivity.this, "item2 onclick", toast.length_short).show();
dismissview();
break;
case r.id.dropdown_item3:
toast.maketext(mainactivity.this, "item3 onclick", toast.length_short).show();
dismissview();
break;
case r.id.dropdown_item4:
toast.maketext(mainactivity.this, "item4 onclick", toast.length_short).show();
dismissview();
break;
default:
break;
}
}
}
//动画结束后必须clearanimation，否则隐藏状态的view依然能响应点击事件
private class animlistenerimpl implements animation.animationlistener {
private view view;
public animlistenerimpl(view view) {
this.view = view;
}
@override
public void onanimationstart(animation animation) {
}
@override
public void onanimationend(animation animation) {
view.clearanimation();
}
@override
public void onanimationrepeat(animation animation) {
}
}
}
完整实例代码点击此处。
更多关于android相关内容感兴趣的读者可查看本站专题：《android开发动画技巧汇总》、《android编程之activity操作技巧总结》、《android视图view技巧总结》、《android布局layout技巧总结》、《android开发入门与进阶教程》、《android资源操作技巧汇总》及《android控件用法总结》
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