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Android開(kāi)發(fā)基于ViewPager+GridView實(shí)現(xiàn)仿大眾點(diǎn)評(píng)橫向滑動(dòng)功能

 更新時(shí)間:2016年09月20日 09:07:11   作者:安卓無(wú)憂(yōu)  
這篇文章主要介紹了Android開(kāi)發(fā)基于ViewPager+GridView實(shí)現(xiàn)仿大眾點(diǎn)評(píng)橫向滑動(dòng)功能,非常不錯(cuò),具有參考借鑒價(jià)值,需要的朋友可以參考下

先給大家展示下效果圖,如果大家大家感覺(jué)不錯(cuò),請(qǐng)參考實(shí)現(xiàn)思路及代碼

1 ViewPager類(lèi)提供了多界面切換的新效果。

新效果有如下特征:

[1] 當(dāng)前顯示一組界面中的其中一個(gè)界面。

[2] 當(dāng)用戶(hù)通過(guò)左右滑動(dòng)界面時(shí),當(dāng)前的屏幕顯示當(dāng)前界面和下一個(gè)界面的一部分。

[3]滑動(dòng)結(jié)束后,界面自動(dòng)跳轉(zhuǎn)到當(dāng)前選擇的界面中

2 介紹里面幾個(gè)比較重要的方法與接口

1,OnPageChangeListener ViewPager頁(yè)面進(jìn)行切換監(jiān)聽(tīng)接口 其中我們經(jīng)常要實(shí)現(xiàn)public void onPageSelected(int arg0),public void onPageScrolled(int arg0, float arg1, int arg

2),public void onPageScrollStateChanged(int arg0)著三個(gè)方面,其中第一個(gè)方法是更多的用到;

2,setCurrentItem(int item),來(lái)設(shè)置跳轉(zhuǎn)到當(dāng)前的頁(yè)面;

3,要顯示ViewPager,當(dāng)然還少不了PagerAdapter類(lèi),進(jìn)行適配;其中我們經(jīng)常也要實(shí)現(xiàn)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),具體的使用方法等會(huì)看例子就ok了

3 例子代碼

java代碼

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>();
///定義第一個(gè)GridView
GridView gridView1 =
(GridView) layoutInflater.inflate(R.layout.grid_fragment_home, null);
MyGridViewAdapter myGridViewAdapter1 = new MyGridViewAdapter(0, 8);
gridView1.setAdapter(myGridViewAdapter1);
///定義第二個(gè)GridView
GridView gridView2 = (GridView)
layoutInflater.inflate(R.layout.grid_fragment_home, null);
MyGridViewAdapter myGridViewAdapter2 = new MyGridViewAdapter(1, 8);
gridView2.setAdapter(myGridViewAdapter2);
///定義第三個(gè)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);
///定義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);
}
});
///注冊(cè)viewPager頁(yè)選擇變化時(shí)的響應(yīng)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;
}
}

以上所述是小編給大家介紹的Android開(kāi)發(fā)仿大眾點(diǎn)評(píng)基于ViewPager+GridView實(shí)現(xiàn)橫向滑動(dòng)功能,希望對(duì)大家有所幫助,如果大家有任何疑問(wèn)請(qǐng)給我留言,小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)腳本之家網(wǎng)站的支持!

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