Android开发基于ViewPager+GridView实现仿大众点评横向滑动功能

先给大家展示下效果图，如果大家大家感觉不错，请参考实现思路及代码

1 viewpager类提供了多界面切换的新效果。

新效果有如下特征：

[1] 当前显示一组界面中的其中一个界面。

[2] 当用户通过左右滑动界面时，当前的屏幕显示当前界面和下一个界面的一部分。

[3]滑动结束后，界面自动跳转到当前选择的界面中

2 介绍里面几个比较重要的方法与接口

1,onpagechangelistener viewpager页面进行切换监听接口 其中我们经常要实现public void onpageselected(int arg0)，public void onpagescrolled(int arg0, float arg1, int arg

2),public void onpagescrollstatechanged(int arg0)着三个方面，其中第一个方法是更多的用到;

2,setcurrentitem(int item),来设置跳转到当前的页面;

3,要显示viewpager,当然还少不了pageradapter类，进行适配;其中我们经常也要实现以下方法才可以:public void destroyitem(view arg0, int arg1, object arg2),public int getcount(),public object instantiateitem(view arg0, int arg1),public boolean isviewfromobject(view arg0, object arg1),具体的使用方法等会看例子就ok了

3 例子代码

java代码

package mm.shandong.com.testviewpagergrid;
import android.content.res.typedarray;
import android.support.v4.view.pageradapter;
import android.support.v4.view.viewpager;
import android.support.v7.app.appcompatactivity;
import android.os.bundle;
import android.view.layoutinflater;
import android.view.view;
import android.view.viewgroup;
import android.widget.baseadapter;
import android.widget.gridview;
import android.widget.imageview;
import android.widget.radiobutton;
import android.widget.radiogroup;
import android.widget.textview;
import android.widget.toast;
import java.util.arraylist;
import java.util.list;
import mm.shandong.com.testviewpagergrid.entity.catogray;
public class testviewpagergridactivity extends appcompatactivity {
viewpager viewpagerhomefragment;
list<catogray> catogarys;
string[] catogary_names;
int[] catogary_resourceids;
layoutinflater layoutinflater;
list<view> gridviews;
radiogroup radiogroup_index_fragment;
@override
protected void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.activity_test_viewpager_grid);
catogary_names = getresources().getstringarray(r.array.catogary_names);
typedarray typedarray = getresources().obtaintypedarray(r.array.catogary_resourceids);
catogary_resourceids = new int[typedarray.length()];
for (int i = 0; i < typedarray.length(); i++) {
catogary_resourceids[i] = typedarray.getresourceid(i, 0);
}
catogarys = new arraylist<catogray>();
viewpagerhomefragment = (viewpager) findviewbyid(r.id.viewpagerhomefragment);
layoutinflater = getlayoutinflater();
radiogroup_index_fragment =
(radiogroup) findviewbyid(r.id.radiogroup_index_fragment);
for (int i = 0; i < catogary_names.length; i++) {
catogray catogary = new catogray();
catogary.setname(catogary_names[i]);
catogary.setimage_source(catogary_resourceids[i]);
catogarys.add(catogary);
}
initviewpager();
}
public void initviewpager() {
gridviews = new arraylist<view>();
///定义第一个gridview
gridview gridview1 =
(gridview) layoutinflater.inflate(r.layout.grid_fragment_home, null);
mygridviewadapter mygridviewadapter1 = new mygridviewadapter(0, 8);
gridview1.setadapter(mygridviewadapter1);
///定义第二个gridview
gridview gridview2 = (gridview)
layoutinflater.inflate(r.layout.grid_fragment_home, null);
mygridviewadapter mygridviewadapter2 = new mygridviewadapter(1, 8);
gridview2.setadapter(mygridviewadapter2);
///定义第三个gridview
gridview gridview3 = (gridview)
layoutinflater.inflate(r.layout.grid_fragment_home, null);
mygridviewadapter mygridviewadapter3 = new mygridviewadapter(2, 8);
gridview3.setadapter(mygridviewadapter3);
gridviews.add(gridview1);
gridviews.add(gridview2);
gridviews.add(gridview3);
///定义viewpager的pageradapter
viewpagerhomefragment.setadapter(new pageradapter() {
@override
public boolean isviewfromobject(view arg0, object arg1) {
// todo auto-generated method stub
return arg0 == arg1;
}
@override
public int getcount() {
// todo auto-generated method stub
return gridviews.size();
}
@override
public void destroyitem(viewgroup container, int position,
object object) {
// todo auto-generated method stub
container.removeview(gridviews.get(position));
//super.destroyitem(container, position, object);
}
@override
public object instantiateitem(viewgroup container, int position) {
// todo auto-generated method stub
container.addview(gridviews.get(position));
return gridviews.get(position);
}
});
///注册viewpager页选择变化时的响应事件
viewpagerhomefragment.setonpagechangelistener(new viewpager.onpagechangelistener() {
@override
public void onpagescrollstatechanged(int position) {
// todo auto-generated method stub
}
@override
public void onpagescrolled(int arg0, float arg1, int arg2) {
// todo auto-generated method stub
}
@override
public void onpageselected(int position) {
// todo auto-generated method stub
radiobutton radiobutton = (radiobutton)
radiogroup_index_fragment.getchildat(position);
radiobutton.setchecked(true);
}
});
}
///定影gridview的adapter
public class mygridviewadapter extends baseadapter {
private int page;
private int count;
public mygridviewadapter(int page, int count) {
this.page = page;
this.count = count;
}
@override
public int getcount() {
// todo auto-generated method stub
return 8;
}
@override
public catogray getitem(int position) {
// todo auto-generated method stub
return catogarys.get(page * count + position);
}
@override
public long getitemid(int position) {
// todo auto-generated method stub
return 0;
}
@override
public view getview(int position, view convertview, viewgroup parent) {
// todo auto-generated method stub
viewholder viewholder = null;
final catogray catogary = catogarys.get(page * count + position);
if (convertview == null) {
viewholder = new viewholder();
convertview = layoutinflater.inflate(r.layout.grid_fragment_home_item, null);
viewholder.grid_fragment_home_item_img =
(imageview) convertview.findviewbyid(r.id.grid_fragment_home_item_img);
viewholder.grid_fragment_home_item_txt =
(textview) convertview.findviewbyid(r.id.grid_fragment_home_item_txt);
convertview.settag(viewholder);
} else {
viewholder = (viewholder) convertview.gettag();
}
viewholder.grid_fragment_home_item_img.setimageresource(catogary.getimage_source());
viewholder.grid_fragment_home_item_txt.settext(catogary.getname());
viewholder.grid_fragment_home_item_img.
setonclicklistener(new view.onclicklistener() {
@override
public void onclick(view view) {
// todo auto-generated method stub
toast.maketext(testviewpagergridactivity.this,
catogary.getname(), toast.length_short).show();
}
});
return convertview;
}
}
public class viewholder {
public imageview grid_fragment_home_item_img;
public textview grid_fragment_home_item_txt;
}
}

以上所述是小编给大家介绍的android开发仿大众点评基于viewpager+gridview实现横向滑动功能，希望对大家有所帮助