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安卓桌面分页

2024-07-20 12:17:39   217人阅读

1.适配器：

package com.example.adapter;import java.util.ArrayList;import android.annotation.SuppressLint;import android.app.ActionBar.LayoutParams;import android.support.v4.view.PagerAdapter;import android.view.View;import android.view.ViewGroup;public class MyViewPagerAdapter extends PagerAdapter{    private ArrayList<View>mlist;    public MyViewPagerAdapter(ArrayList<View>mlist){        super();        this.mlist=mlist;    }    @Override    public int getCount() {        // TODO Auto-generated method stub        return this.mlist==null?0:this.mlist.size();    }    @Override    public boolean isViewFromObject(View arg0, Object arg1) {        // TODO Auto-generated method stub        return arg0==arg1;    }    public void destroyItem(ViewGroup container,int position,Object object){        container.removeView(this.mlist.get(position));    }    @SuppressLint("NewApi")    public Object instantiateItem(ViewGroup container,int position){        LayoutParams lp=new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT);        container.addView(this.mlist.get(position),lp);        return this.mlist.get(position);    }}
2.activity：
package com.example.adapter;import java.util.ArrayList;import android.app.Activity;import android.os.Bundle;import android.support.v4.view.ViewPager;import android.text.Layout;import android.view.View;import android.view.ViewGroup.LayoutParams;import android.widget.ImageView;import android.widget.ImageView.ScaleType;public class ViewPageActivity extends Activity{    private int[]imgs={            R.drawable.bbe609315da7a9bfa65df713e7c168e0,            R.drawable.bc494385774b8343123c5697ebeaeb9,            R.drawable.dd6709ab53006f11f393e58f2ba614c4,            R.drawable.e8d145de5ffdf97a4407ab4c5dd33513,            R.drawable.eecfd0d328203e8a15366658231c3174    };    @Override    protected void onCreate(Bundle savedInstanceState) {        // TODO Auto-generated method stub        super.onCreate(savedInstanceState);        setContentView(R.layout.viewpagelayout);        ViewPager viewPager=(ViewPager) findViewById(R.id.myPager);        ArrayList<View>mlist=new ArrayList<View>();        for(int i=0;i<imgs.length;i++){            ImageView imgView=new ImageView(this);            imgView.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT));            imgView.setScaleType(ScaleType.FIT_XY);            imgView.setImageResource(imgs[i]);            mlist.add(imgView);        }        MyViewPagerAdapter adapter=new MyViewPagerAdapter(mlist);        viewPager.setAdapter(adapter);    }    }
 


 
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