2. 程式人生 > >ViewPager 側拉 多條目載入

ViewPager 側拉 多條目載入

阿新 • • 發佈：2018-12-20

MainActivity裡

package com.example.week02;

import android.os.Environment; import android.support.annotation.NonNull; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.view.ViewPager; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.RadioGroup; import android.widget.Toast;

import com.bwie.xlistviewlibrary.view.XListView; import com.nostra13.universalimageloader.core.DisplayImageOptions; import com.nostra13.universalimageloader.core.ImageLoader;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity { String urlBitmap = “http://img.my.csdn.net/uploads/201407/26/1406383265_8550.jpg

”; String ss=Environment.getExternalStorageDirectory()+"/c.jpg"; ArrayList flist = new ArrayList(); private ViewPager view_pager; private RadioGroup radio_group; ArrayList alist = new ArrayList(); private ListView list_view; private DrawerLayout drawer; private LinearLayout linear; private ImageView img1;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

// ViewPager img1 = findViewById(R.id.img1);

    ImageLoader instance = ImageLoader.getInstance();
    DisplayImageOptions options=ImageloaderUtils.getdisplay();
    //設定圓角圖片
    //sd卡里  instance.displayImage("file://"+R.drawable.f,img1,options);
    //網路裡 instance.displayImage(urlBitmap,img1,options);
    //drawable裡 instance.displayImage("drawable://"+R.drawable.f,img1,options);
    instance.displayImage("drawable://"+R.drawable.f,img1,options);

    linear = findViewById(R.id.linear);
    list_view = findViewById(R.id.list_view);
    drawer = findViewById(R.id.drawer);
    view_pager = findViewById(R.id.view_pager);
    radio_group = findViewById(R.id.radio_group);
    flist.add(new Fragment01());
    flist.add(new Fragment02());
    flist.add(new Fragment03());
    MyFadapter myFadapter = new MyFadapter(getSupportFragmentManager());
    view_pager.setAdapter(myFadapter);
    view_pager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
        @Override
        public void onPageScrolled(int i, float v, int i1) {
            radio_group.check(radio_group.getChildAt(i).getId());
        }

        @Override
        public void onPageSelected(int i) {

        }

        @Override
        public void onPageScrollStateChanged(int i) {

        }
    });
    list_view.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            switch (position) {
                case 0:
                    Toast.makeText(MainActivity.this, "點", Toast.LENGTH_SHORT).show();
                    view_pager.setCurrentItem(0);
                    drawer.closeDrawers();
                    break;
                case 1:
                    view_pager.setCurrentItem(1);
                    drawer.closeDrawers();
                    break;
                case 2:
                    view_pager.setCurrentItem(2);
                    drawer.closeDrawers();
                    break;
            }
        }
    });

    radio_group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(RadioGroup group, int checkedId) {
            switch (checkedId) {
                case R.id.btn1:
                    view_pager.setCurrentItem(0,false);
                    break;
                case R.id.btn2:
                    view_pager.setCurrentItem(1,false);
                    break;
                case R.id.btn3:
                    view_pager.setCurrentItem(2,false);
                    break;
            }
        }
    });
    initData();

    drawer.addDrawerListener(new DrawerLayout.DrawerListener() {
        @Override
        public void onDrawerSlide(@NonNull View view, float v) {

        }

        @Override
        public void onDrawerOpened(@NonNull View view) {

        }

        @Override
        public void onDrawerClosed(@NonNull View view) {
            //Toast.makeText(MainActivity.this, "關閉了", Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onDrawerStateChanged(int i) {

        }
    });
   /* list_view.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
        @Override
        public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {

            return true;
        }
    });*/
}

private void initData() {
    for (int i = 1; i < 10; i++) {
        alist.add("fragment0" + i);
    }
    ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, alist);
    list_view.setAdapter(arrayAdapter);
}

private class MyFadapter extends FragmentPagerAdapter {
    public MyFadapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int i) {
        return flist.get(i);
    }

    @Override
    public int getCount() {
        return flist.size();
    }
}

}

Fragment01裡的

package com.example.week02;

import android.os.AsyncTask; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.support.v4.widget.DrawerLayout; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast;

import com.bwie.xlistviewlibrary.utils.NetWordUtils; import com.bwie.xlistviewlibrary.view.XListView; import com.google.gson.Gson; import com.nostra13.universalimageloader.core.DisplayImageOptions; import com.nostra13.universalimageloader.core.ImageLoader;

import java.util.ArrayList; import java.util.List;

public class Fragment01 extends Fragment { String urlString = “http://api.expoon.com/AppNews/getNewsList/type/1/p/”; ArrayList<Goods.DataBean> alist=new ArrayList<Goods.DataBean>(); private XListView xls; private MyBadapter badapter; private ImageLoader instance; int page;

@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment01, container, false);
    xls = view.findViewById(R.id.xls);
    return view;
}

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    badapter = new MyBadapter();
    instance = ImageLoader.getInstance();
    xls.setAdapter(badapter);
    erinitData(page);
    xls.setPullLoadEnable(true);
    xls.setXListViewListener(new XListView.IXListViewListener() {
        @Override
        public void onRefresh() {
            alist.clear();
            erinitData(0);
        }

        @Override
        public void onLoadMore() {
        page++;
        erinitData(page);
        }
    });
}

private void erinitData(int page) {
    String murl=urlString+page;
    new MAsyncTask().execute(murl);
}


private class MyBadapter extends BaseAdapter {
    ImageView imageView;
    TextView textView;
    View view1;

    @Override
    public int getItemViewType(int position) {
        return position%2;
    }

    @Override
    public int getViewTypeCount() {
        return 2;
    }

    @Override
    public int getCount() {
        return alist.size();
    }

    @Override
    public Object getItem(int position) {
        return alist.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        int itemViewType = getItemViewType(position);
        switch (itemViewType){
            case 0:
                view1= View.inflate(getActivity(), R.layout.item2, null);
                imageView=view1.findViewById(R.id.img2);
                textView=view1.findViewById(R.id.text2);
                textView.setText(alist.get(position).getNews_title());
                DisplayImageOptions options=ImageloaderUtils.getdisplay();
                instance.displayImage(alist.get(position).getPic_url(),imageView,options);
                break;
            case 1:
                view1= View.inflate(getActivity(), R.layout.item2, null);
                imageView=view1.findViewById(R.id.img2);
                textView=view1.findViewById(R.id.text2);
                textView.setText(alist.get(position).getNews_title());
                imageView.setVisibility(View.GONE);
                break;
        }
        return view1;
    }

}

private class MAsyncTask extends AsyncTask<String,Void,String>{
    @Override
    protected String doInBackground(String... strings) {
        return NetWordUtils.getNetjson(strings[0]);
    }

    @Override
    protected void onPostExecute(String s) {
        super.onPostExecute(s);
        Gson gson = new Gson();
        Goods goods = gson.fromJson(s, Goods.class);
        List<Goods.DataBean> data = goods.getData();
        alist.addAll(data);
        badapter.notifyDataSetChanged();
        UIcomplete();
    }
}
public void UIcomplete(){
    xls.setRefreshTime("剛剛");
    xls.stopLoadMore();
    xls.stopRefresh();
}

}

activity_main.xml里布局

<?xml version="1.0" encoding="utf-8"?>

<android.support.v4.widget.DrawerLayout xmlns:android=“http://schemas.android.com/apk/res/android” android:id="@+id/drawer" android:layout_width=“match_parent” android:layout_height=“match_parent”>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>

<android.support.v4.view.ViewPager
    android:id="@+id/view_pager"
    android:layout_weight="9"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

<RadioGroup
    android:id="@+id/radio_group"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:orientation="horizontal">

    <RadioButton
        android:id="@+id/btn1"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:background="@drawable/dian"
        android:button="@null"
        android:checked="true"
        android:gravity="center"
        android:text="首頁" />

    <RadioButton
        android:id="@+id/btn2"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:background="@drawable/dian"
        android:button="@null"
        android:gravity="center"
        android:text="視訊" />

    <RadioButton
        android:id="@+id/btn3"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:background="@drawable/dian"
        android:button="@null"
        android:gravity="center"
        android:text="我的" />
</RadioGroup>

    <ImageView
        android:id="@+id/img1"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:src="@drawable/f" />

    <ListView
        android:id="@+id/list_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></ListView>

</LinearLayout>

</android.support.v4.widget.DrawerLayout>

fragment01佈局

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.ConstraintLayout xmlns:android=“http://schemas.android.com/apk/res/android” android:layout_width=“match_parent” android:layout_height=“match_parent”> <com.bwie.xlistviewlibrary.view.XListView android:id="@+id/xls" android:layout_width=“match_parent” android:layout_height=“match_parent”>

</com.bwie.xlistviewlibrary.view.XListView>

</android.support.constraint.ConstraintLayout>

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