ViewPager的界面滑動（初學試用）

import java.util.ArrayList;

import java.util.List;

import android.app.Activity;

import android.os.Bundle;

import android.support.v4.view.PagerAdapter;

import android.support.v4.view.ViewPager;

import android.support.v4.view.ViewPager.OnPageChangeListener;

import android.view.LayoutInflater;

import android.view.Menu;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Button;

public class MainActivity extends Activity {

private List<View> listView = new ArrayList<View>();

private ViewPager viewPager;

private Button title1;

private Button title2;

private Button title3;

private Button title4;

private Button title5;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

initView();

initAdapter();

}

                //加載控件

private void initView() {

title1 = (Button) findViewById(R.id.bt_title1);

title2 = (Button) findViewById(R.id.bt_title2);

title3 = (Button) findViewById(R.id.bt_title3);

title4 = (Button) findViewById(R.id.bt_title4);

title5 = (Button) findViewById(R.id.bt_title5);

}

public void clickTitle1(View v) {

                //修改未選中按鈕背景顏色

title2.setBackgroundResource(R.drawable.kfa);

title3.setBackgroundResource(R.drawable.kfa);

title4.setBackgroundResource(R.drawable.kfa);

title5.setBackgroundResource(R.drawable.kfa);

                //修改選中按鈕背景顏色

title1.setBackgroundResource(R.drawable.fasd);

                //跳轉到對應界面

viewPager.setCurrentItem(0);

}

                //Button點擊事件

public void clickTitle2(View v) {

title1.setBackgroundResource(R.drawable.kfa);

title3.setBackgroundResource(R.drawable.kfa);

title4.setBackgroundResource(R.drawable.kfa);

title5.setBackgroundResource(R.drawable.kfa);

title2.setBackgroundResource(R.drawable.fasd);

viewPager.setCurrentItem(1);

}

                //Button點擊事件

public void clickTitle3(View v) {

title1.setBackgroundResource(R.drawable.kfa);

title2.setBackgroundResource(R.drawable.kfa);

title4.setBackgroundResource(R.drawable.kfa);

title5.setBackgroundResource(R.drawable.kfa);

title3.setBackgroundResource(R.drawable.fasd);

viewPager.setCurrentItem(2);

}

                //Button點擊事件

public void clickTitle4(View v) {

title1.setBackgroundResource(R.drawable.kfa);

title2.setBackgroundResource(R.drawable.kfa);

title3.setBackgroundResource(R.drawable.kfa);

title5.setBackgroundResource(R.drawable.kfa);

title4.setBackgroundResource(R.drawable.fasd);

viewPager.setCurrentItem(3);

}

                //Button點擊事件

public void clickTitle5(View v) {

title1.setBackgroundResource(R.drawable.kfa);

title2.setBackgroundResource(R.drawable.kfa);

title3.setBackgroundResource(R.drawable.kfa);

title4.setBackgroundResource(R.drawable.kfa);

title5.setBackgroundResource(R.drawable.fasd);

viewPager.setCurrentItem(4);

}

private void initAdapter() {

// 獲取頁面

LayoutInflater inflater = LayoutInflater.from(this);

View v1 = View.inflate(getApplicationContext(),

R.layout.activity_title1, null);

View v2 = View.inflate(getApplicationContext(),

R.layout.activity_title2, null);

View v3 = View.inflate(getApplicationContext(),

R.layout.activity_title3, null);

View v4 = View.inflate(getApplicationContext(),

R.layout.activity_title4, null);

View v5 = View.inflate(getApplicationContext(),

R.layout.activity_title5, null);

// 將頁面添加到集合中

listView.add(v1);

listView.add(v2);

listView.add(v3);

listView.add(v4);

listView.add(v5);

PagerAdapter pagerAdapter = new PagerAdapter() {

// PagerAdapter只緩存2個要顯示的tab，如果滑動的tab超出了緩存的范圍，就會調用這個方法，將tab銷毀

@Override

public void destroyItem(ViewGroup view, int position, Object object) {

view.removeView(listView.get(position));

}

// 當要顯示的tab可以進行緩存的時候，會調用這個方法進行顯示圖片的初始化，我們將要顯示的tab加入到ViewGroup中，然后作為返回值返回即可

@Override

public Object instantiateItem(ViewGroup view, int position) {

view.addView(listView.get(position));

return listView.get(position);

}

// 獲取要滑動的控件的數量，在這里我們以tab為例，那么這里就應該是展示tab數量

@Override

public int getCount() {

return listView.size();

}

// 來判斷顯示的是否是同一tab，這里我們將兩個參數相比較返回即可

@Override

public boolean isViewFromObject(View arg0, Object arg1) {

return arg0 == arg1;

}

};

viewPager = (ViewPager) findViewById(R.id.vp_body);

viewPager.setAdapter(pagerAdapter);

/**

* 標題欄響應界面滑動事件

*/

viewPager.setOnPageChangeListener(new OnPageChangeListener() {

@Override

public void onPageSelected(int arg0) {

title1.setBackgroundResource(R.drawable.kfa);

title2.setBackgroundResource(R.drawable.kfa);

title3.setBackgroundResource(R.drawable.kfa);

title4.setBackgroundResource(R.drawable.kfa);

title5.setBackgroundResource(R.drawable.kfa);

switch (viewPager.getCurrentItem()) {

case 0:

title1.setBackgroundResource(R.drawable.fasd);

break;

case 1:

title2.setBackgroundResource(R.drawable.fasd);

break;

case 2:

title3.setBackgroundResource(R.drawable.fasd);

break;

case 3:

title4.setBackgroundResource(R.drawable.fasd);

break;

case 4:

title5.setBackgroundResource(R.drawable.fasd);

break;

}

}

@Override

public void onPageScrolled(int arg0, float arg1, int arg2) {

}

@Override

public void onPageScrollStateChanged(int arg0) {

}

});

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

getMenuInflater().inflate(R.menu.main, menu);

return true;

}

}