android viewpager 滑动分页以及禁止划屏（模拟新浪）

来源：互联网发布：印尼酒店网络怎么样编辑：程序博客网时间：2024/06/09 02:51

这一篇将之加工一下，模拟实现新浪里面的功能,vierpager 分页.

在新浪微博消息一栏中是这样的（注意看title）：

上部分页栏可以用gridview来实现，不过为了省事在这就用textview代替了.

贴出代码：

[java] view plaincopy

/***
* ViewPager
*
* @author zhangjia
*
*/
public class MainActivity extends ActivityGroup implements OnClickListener {
private LinearLayout layout;// title
private ViewPager pager;
private ArrayList<View> pageViews;
private LinearLayout layout2;
private ArrayList<ImageView> imageViews;
private LinearLayout linearLayout;
private String title[] = { "one", "two", "three" };
private TextView textView;
private ArrayList<View> arrayList;// 用于装载view
private final int linerlayout_height = 80;
/***
* init title and pageview
*/
void Init() {
arrayList = new ArrayList<View>();
// 获取屏幕宽度
int width = getWindowManager().getDefaultDisplay().getWidth()
/ title.length;
for (int i = 0; i < title.length; i++) {
textView = new TextView(this);
textView.setText(title[i]);
textView.setWidth(width);
textView.setHeight(linerlayout_height - 10);
textView.setTextSize(20);
textView.setTextColor(color.black);
textView.setGravity(Gravity.CENTER);
textView.setId(i);
textView.setPadding(5, 5, 5, 5);
textView.setOnClickListener(this);
linearLayout.addView(textView);
arrayList.add(textView);
}
pageViews = new ArrayList<View>();
View view00 = getLocalActivityManager().startActivity("activity01",
new Intent(this, NullActivity.class)).getDecorView();
View view01 = getLocalActivityManager().startActivity("activity01",
new Intent(this, MainActivity1.class)).getDecorView();
View view02 = getLocalActivityManager().startActivity("activity02",
new Intent(this, MainActivity2.class)).getDecorView();
View view03 = getLocalActivityManager().startActivity("activity02",
new Intent(this, MainActivity3.class)).getDecorView();
View view04 = getLocalActivityManager().startActivity("activity01",
new Intent(this, NullActivity.class)).getDecorView();
pageViews.add(view00);
pageViews.add(view01);
pageViews.add(view02);
pageViews.add(view03);
pageViews.add(view04);
}
void Init_Point() {
imageViews = new ArrayList<ImageView>();
ImageView imageView;
for (int i = 0; i < pageViews.size(); i++) {
imageView = new ImageView(this);
imageView.setLayoutParams(new LayoutParams(5, 5));
imageView.setBackgroundResource(R.drawable.d1);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
new ViewGroup.LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
layoutParams.leftMargin = 20;
layoutParams.rightMargin = 20;
layout2.addView(imageView, layoutParams);
// 第一个和最后一个让她消失
if (i == 0 || i == pageViews.size() - 1) {
imageView.setVisibility(View.GONE);
}
if (i == 1) {
imageView.setBackgroundResource(R.drawable.d2);
}
imageViews.add(imageView);
}
}
public void draw_Point(int index) {
for (int i = 1; i < imageViews.size(); i++) {
if (index == i) {
imageViews.get(i).setBackgroundResource(R.drawable.d2);
} else
imageViews.get(i).setBackgroundResource(R.drawable.d1);
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTitle("jjhappyforever...");
setContentView(R.layout.main);
pager = (ViewPager) findViewById(R.id.vp_contains);
layout2 = (LinearLayout) findViewById(R.id.iv_image);
linearLayout = (LinearLayout) findViewById(R.id.mian);
// 创建linerlayout的大小
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
new ViewGroup.LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.FILL_PARENT));
layoutParams.height = linerlayout_height;
linearLayout.setLayoutParams(layoutParams);
Init();
Init_Point();
pager.setAdapter(new myPagerView());
arrayList.get(0).setBackgroundResource(
R.drawable.renren_sdk_pay_repair_btn_down);
pager.setCurrentItem(1);
pager.setOnPageChangeListener(new OnPageChangeListener() {
@Override
public void onPageSelected(int arg0) {
draw_Point(arg0);// 描绘分页点，一定要写在这里.
// Toast.makeText(MainActivity.this, ""+arg0, 1000).show();
// 如果是第一屏或者是最后一屏禁止滑动，其实这里实现的是如果滑动的是第一屏则跳转至第二屏，如果是最后一屏则跳转到倒数第二屏.
if (arg0 == imageViews.size() - 1 || arg0 == 0) {
if (arg0 == 0) {
pager.setCurrentItem(arg0 + 1);// 第二屏会再次实现该回调方法实现跳转.
imageViews.get(1).setBackgroundResource(R.drawable.d2);
} else {
pager.setCurrentItem(arg0 - 1);// 倒数第二屏
imageViews.get(arg0 - 1).setBackgroundResource(
R.drawable.d2);
}
} else {
//一定要卸载else里面，viewpager挺变态的，写在外面，（在你在最左边往左拉的时候会执行两次，最右边也是.）
setBackgroud(arg0 - 1);
Toast.makeText(MainActivity.this, "" + arg0, 1000).show();
}
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
/***
* 对title 选项卡处理
* @param index
*/
public void setBackgroud(int index) {
for (int i = 0; i < arrayList.size(); i++) {
arrayList.get(i).setBackgroundDrawable(new BitmapDrawable());
if (i == index)
arrayList.get(index).setBackgroundResource(
R.drawable.renren_sdk_pay_repair_btn_down);
}
}
/***
* viewpager 的数据源
* @author zhangjia
*
*/
class myPagerView extends PagerAdapter {
// 显示数目
@Override
public int getCount() {
return pageViews.size();
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == arg1;
}
@Override
public int getItemPosition(Object object) {
// TODO Auto-generated method stub
return super.getItemPosition(object);
}
@Override
public void destroyItem(View arg0, int arg1, Object arg2) {
// TODO Auto-generated method stub
((ViewPager) arg0).removeView(pageViews.get(arg1));
}
/***
* 获取每一个item，类于listview中的getview
*/
@Override
public Object instantiateItem(View arg0, int arg1) {
((ViewPager) arg0).addView(pageViews.get(arg1));
return pageViews.get(arg1);
}
}
/***
* 点击事件
*/
@Override
public void onClick(View v) {
switch (v.getId()) {
case 0:
setBackgroud(0);
pager.setCurrentItem(1);
break;
case 1:
setBackgroud(1);
pager.setCurrentItem(2);
break;
case 2:
setBackgroud(2);
pager.setCurrentItem(3);
break;
default:
break;
}
}
}

上面就是所有的代码，其实看起来有点小多，不过都挺容易理解的.还有就是前面我写过一片关于viewpager的介绍，这里也就不过多讲解了.详细请下载源码看吧.

样本示例：

第一屏左垃第一屏滑向第二屏

第二屏第三屏第三屏右拉（会缩回）

源码下载

android viewpager 滑动分页以及禁止划屏 （模拟新浪）

android viewpager 滑动分页以及禁止划屏（模拟新浪）