Android实现悬浮对话框代码

先给大家展示下效果图，大家觉效果满意，请参考实现代码。

直接上代码：

private void setdialog(){
view view = getlayoutinflater().inflate(r.layout.dialog_country, null);
mdialog = new dialog(this);
mdialog.setcontentview(view, new layoutparams(layoutparams.fill_parent, layoutparams.wrap_content));
window window = mdialog.getwindow();
windowmanager.layoutparams wl = window.getattributes();
wl.x = 0;
wl.y = getwindowmanager().getdefaultdisplay().getheight();
wl.width = viewgroup.layoutparams.match_parent;
wl.height = viewgroup.layoutparams.wrap_content;
mdialog.onwindowattributeschanged(wl);
mdialog.setcanceledontouchoutside(true);
mdialog.show();
button btnchina = (button) view.findviewbyid(r.id.btnchina);
button btnusa = (button) view.findviewbyid(r.id.btnusa);
button btnuk = (button) view.findviewbyid(r.id.btnuk);
button btncancel = (button) view.findviewbyid(r.id.btncancel);
btnchina.setonclicklistener(new onclicklistener(){
@override
public void onclick(view v) {
// todo auto-generated method stub
mquery.id(r.id.btncountry).gettextview().settext("china");
mdialog.dismiss();
} 
});
btnusa.setonclicklistener(new onclicklistener(){
@override
public void onclick(view v) {
// todo auto-generated method stub
mquery.id(r.id.btncountry).gettextview().settext("usa");
mdialog.dismiss();
} 
});
btnuk.setonclicklistener(new onclicklistener(){
@override
public void onclick(view v) {
// todo auto-generated method stub
mquery.id(r.id.btncountry).gettextview().settext("uk");
mdialog.dismiss();
} 
});
btncancel.setonclicklistener(new onclicklistener(){
@override
public void onclick(view v) {
// todo auto-generated method stub
mdialog.dismiss();
} 
});
}

首先inflate一个xml文件，产生一个view；再创建一个dialog，设置dialog的view为inflate的view；然后通过windowmanager.layoutparams设置dialog的长度、宽度、显示的位置等等，最后setcanceledontouchoutside(true)，点击其他地方可以退出dialog。