Android中ListView分页处理

分页处理的代码比较简单，下面粘贴代码：

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    tools:context=".MainActivity" >

   <ListView
     android:id="@+id/page"
     android:layout_height="600dp"
     android:layout_width="wrap_content" 
    />
   
   <LinearLayout
     android:orientation="horizontal" 
     android:layout_width="fill_parent"  
     android:layout_height="wrap_content">
     
     <Button
      android:id="@+id/forward"
      android:text="上一页"
      android:layout_width="wrap_content"  
      android:layout_height="wrap_content"
     />
     
     <Button
      android:id="@+id/backward"
      android:text="下一页"
      android:layout_width="wrap_content"  
      android:layout_height="wrap_content"
     />
     
     </LinearLayout>

</LinearLayout>

 

把Activity和adapter写在一起了，想增大功能的话，可以自己扩展，原理就这些了。

 

package com.example.oneone;

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

import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.view.Gravity;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends Activity {

	private ListView lv;
	private List mData;
	private Button forward, backward;
	private int index = 0; // 分页索引
	private int viewCount = 5; // 每页显示5条
	PageAdapter mPageAdapter;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		forward = (Button) this.findViewById(R.id.forward);
		backward = (Button) this.findViewById(R.id.backward);
		lv = (ListView) this.findViewById(R.id.page);

		 mData = getData();
		 mPageAdapter = new PageAdapter(this);
		 lv.setAdapter(mPageAdapter);

		
		
		
		forward.setOnClickListener(listener);
		backward.setOnClickListener(listener);

		checkButton();// 初始化没有上一页

	}

	private View.OnClickListener listener = new View.OnClickListener() {
		@Override
		public void onClick(View v) {
			switch (v.getId()) {
			case R.id.forward:
				to_Forward();
				break;
			case R.id.backward:
				to_Backward();
				break;
			}
		}
	};

	/**
	 * 上一页
	 */
	private void to_Forward() {
		index--;
		mPageAdapter.notifyDataSetChanged();
		checkButton();
	}

	/**
	 * 下一页
	 */
	private void to_Backward() {
		index++;
		mPageAdapter.notifyDataSetChanged();
		checkButton();
	}

	private void checkButton() {
		if (index <= 0) {
			forward.setEnabled(false);
		} else if (mData.size() - index * viewCount <= viewCount) {
			backward.setEnabled(false);
		} else {
			forward.setEnabled(true);
			backward.setEnabled(true);
		}

	}

	private List getData() {
		List list = new ArrayList();
		for (int i = 0; i < 17; i++) {
			list.add(i);
		}
		return list;
	}

	class PageAdapter extends BaseAdapter {

		private Context mContext;

		public PageAdapter(Context context) {
			this.mContext = context;
		}

		@Override
		public int getCount() {
			int temp = index * viewCount;
			if ((mData.size() - temp) < viewCount) {
				return (mData.size() - temp);
			} else {
				return viewCount;
			}
		}

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

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

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			TextView tv = new TextView(mContext);
			tv.setGravity(Gravity.CENTER);
			tv.setText(mData.get(position + index * viewCount) + "");
			return tv;
		}

	}

}

 

此代码比较简单，但是需要强大的功能还需要自己进行修改添加的