我正在使用 Jake 的ViewPageIndicator并希望像滑动图库一样显示图像。我可以开始的任何参考链接。我已经实现了基本的viewpager,现在想实现如下的图像viewpaper
9 回答
在 Jake 的 ViewPageIndicator 中,他实现了 View pager 以显示一个字符串数组(即
["this","is","a","text"]
),您将其从 YourAdapter.java(扩展 FragmentPagerAdapter)传递到 YourFragment.java,后者将 View 返回给 viewpager。
为了显示不同的内容,您只需更改传递的上下文类型。在这种情况下,您希望传递图像而不是文本,如下面的示例所示:
这是您设置 Viewpager 的方式:
public class PlaceDetailsFragment extends SherlockFragment {
PlaceSlidesFragmentAdapter mAdapter;
ViewPager mPager;
PageIndicator mIndicator;
public static final String TAG = "detailsFragment";
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_place_details,
container, false);
mAdapter = new PlaceSlidesFragmentAdapter(getActivity()
.getSupportFragmentManager());
mPager = (ViewPager) view.findViewById(R.id.pager);
mPager.setAdapter(mAdapter);
mIndicator = (CirclePageIndicator) view.findViewById(R.id.indicator);
mIndicator.setViewPager(mPager);
((CirclePageIndicator) mIndicator).setSnap(true);
mIndicator
.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageSelected(int position) {
Toast.makeText(PlaceDetailsFragment.this.getActivity(),
"Changed to page " + position,
Toast.LENGTH_SHORT).show();
}
@Override
public void onPageScrolled(int position,
float positionOffset, int positionOffsetPixels) {
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
return view;
}
}
your_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<com.viewpagerindicator.CirclePageIndicator
android:id="@+id/indicator"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="10dip" />
</LinearLayout>
你的适配器.java
public class PlaceSlidesFragmentAdapter extends FragmentPagerAdapter implements
IconPagerAdapter {
private int[] Images = new int[] { R.drawable.photo1, R.drawable.photo2,
R.drawable.photo3, R.drawable.photo4
};
protected static final int[] ICONS = new int[] { R.drawable.marker,
R.drawable.marker, R.drawable.marker, R.drawable.marker };
private int mCount = Images.length;
public PlaceSlidesFragmentAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
return new PlaceSlideFragment(Images[position]);
}
@Override
public int getCount() {
return mCount;
}
@Override
public int getIconResId(int index) {
return ICONS[index % ICONS.length];
}
public void setCount(int count) {
if (count > 0 && count <= 10) {
mCount = count;
notifyDataSetChanged();
}
}
}
你的片段.java
// 你需要从这里返回图像而不是文本。//
public final class PlaceSlideFragment extends Fragment {
int imageResourceId;
public PlaceSlideFragment(int i) {
imageResourceId = i;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ImageView image = new ImageView(getActivity());
image.setImageResource(imageResourceId);
LinearLayout layout = new LinearLayout(getActivity());
layout.setLayoutParams(new LayoutParams());
layout.setGravity(Gravity.CENTER);
layout.addView(image);
return layout;
}
}
你应该从上面的代码中得到一个这样的视图寻呼机。
我做了一个名为AndroidImageSlider的库,你可以试试。
Image Viewer with ViewPager Implementation,查看这个项目https://github.com/chiuki/android-swipe-image-viewer
另请参阅此讨论使用 viewpager 滑动图像(不是布局)
只需使用这个https://gist.github.com/8cbe094bb7a783e37ad1使周围的页面可见,并使用http://viewpagerindicator.com/这个作为指标。太酷了,我正在用它来做画廊。
呵呵..用Gallery来实现这个应该很容易,用ViewPager就难多了。但我仍然鼓励使用 ViewPager,因为 Gallery 确实有很多问题,并且自 android 4.2 以来已被弃用。
在 PagerAdapter 中有一个方法 getPageWidth() 来控制页面大小,但只有这样你才能达到你的目标。
尝试阅读以下 2 篇文章寻求帮助。
你可以使用自定义画廊控制..检查这个https://github.com/kilaka/ImageViewZoom 使用来自这个的galleryTouch类..
嗨,如果您正在寻找带有圆形指示器的简单 android 图像滑动,您可以从这里下载完整代码http://javaant.com/viewpager-with-circle-indicator-in-android/#.VysQQRV96Hs。请查看现场演示,这将给出清晰的想法。
enter code here public Timer timer;
public TimerTask task;
public ImageView slidingimage;
private int[] IMAGE_IDS = {
R.drawable.home_banner1, R.drawable.home_banner2, R.drawable.home_banner3
};
enter code here @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home_screen);
final Handler mHandler = new Handler();
// Create runnable for posting
final Runnable mUpdateResults = new Runnable() {
public void run() {
AnimateandSlideShow();
}
};
int delay = 2000; // delay for 1 sec.
int period = 2000; // repeat every 4 sec.
Timer timer = new Timer();
timer.scheduleAtFixedRate(new TimerTask() {
public void run() {
mHandler.post(mUpdateResults);
}
}, delay, period);
enter code here private void AnimateandSlideShow() {
slidingimage = (ImageView)findViewById(R.id.banner);
slidingimage.setImageResource(IMAGE_IDS[currentimageindex%IMAGE_IDS.length]);
currentimageindex++;
Animation rotateimage = AnimationUtils.loadAnimation(this, R.anim.custom_anim);
slidingimage.startAnimation(rotateimage);
}
一个很棒的 One Image 滑块:https ://github.com/daimajia/AndroidImageSlider检查它