如何像Gallery一样实现Horizo​​ntalScrollView？

我想用Gallery的一些特性来实现Horizontal ScrollView ，

如果我们有三个图像显示在屏幕上，点击最后一个图像将安排在中心。

我将如何实现HorizontalSCrollView如上所述？

Answer 1

试试这个代码：

activity_main.xml中

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="100dip" tools:context=".MainActivity" > <HorizontalScrollView android:id="@+id/hsv" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:fillViewport="true" android:measureAllChildren="false" android:scrollbars="none" > <LinearLayout android:id="@+id/innerLay" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center_vertical" android:orientation="horizontal" > <LinearLayout android:id="@+id/asthma_action_plan" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" > <RelativeLayout android:layout_width="fill_parent" android:layout_height="match_parent" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/action_plan" /> <TextView android:layout_width="0.2dp" android:layout_height="fill_parent" android:layout_alignParentRight="true" android:background="@drawable/ln" /> </RelativeLayout> </LinearLayout> <LinearLayout android:id="@+id/controlled_medication" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" > <RelativeLayout android:layout_width="fill_parent" android:layout_height="match_parent" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/controlled" /> <TextView android:layout_width="0.2dp" android:layout_height="fill_parent" android:layout_alignParentRight="true" android:background="@drawable/ln" /> </RelativeLayout> </LinearLayout> <LinearLayout android:id="@+id/as_needed_medication" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" > <RelativeLayout android:layout_width="fill_parent" android:layout_height="match_parent" android:orientation="horizontal" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/as_needed" /> <TextView android:layout_width="0.2dp" android:layout_height="fill_parent" android:layout_alignParentRight="true" android:background="@drawable/ln" /> </RelativeLayout> </LinearLayout> <LinearLayout android:id="@+id/rescue_medication" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" > <RelativeLayout android:layout_width="fill_parent" android:layout_height="match_parent" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/rescue" /> <TextView android:layout_width="0.2dp" android:layout_height="fill_parent" android:layout_alignParentRight="true" android:background="@drawable/ln" /> </RelativeLayout> </LinearLayout> <LinearLayout android:id="@+id/your_symptoms" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" > <RelativeLayout android:layout_width="fill_parent" android:layout_height="match_parent" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/symptoms" /> <TextView android:layout_width="0.2dp" android:layout_height="fill_parent" android:layout_alignParentRight="true" android:background="@drawable/ln" /> </RelativeLayout> </LinearLayout> <LinearLayout android:id="@+id/your_triggers" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" > <RelativeLayout android:layout_width="fill_parent" android:layout_height="match_parent" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/triggers" /> <TextView android:layout_width="0.2dp" android:layout_height="fill_parent" android:layout_alignParentRight="true" android:background="@drawable/ln" /> </RelativeLayout> </LinearLayout> <LinearLayout android:id="@+id/wheeze_rate" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" > <RelativeLayout android:layout_width="fill_parent" android:layout_height="match_parent" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/wheeze_rate" /> <TextView android:layout_width="0.2dp" android:layout_height="fill_parent" android:layout_alignParentRight="true" android:background="@drawable/ln" /> </RelativeLayout> </LinearLayout> <LinearLayout android:id="@+id/peak_flow" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" > <RelativeLayout android:layout_width="fill_parent" android:layout_height="match_parent" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/peak_flow" /> <TextView android:layout_width="0.2dp" android:layout_height="fill_parent" android:layout_alignParentRight="true" android:background="@drawable/ln" /> </RelativeLayout> </LinearLayout> </LinearLayout> </HorizontalScrollView> <TextView android:layout_width="fill_parent" android:layout_height="0.2dp" android:layout_alignParentRight="true" android:layout_below="@+id/hsv" android:background="@drawable/ln" /> <LinearLayout android:id="@+id/prev" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_alignParentLeft="true" android:layout_centerVertical="true" android:paddingLeft="5dip" android:paddingRight="5dip" android:descendantFocusability="blocksDescendants" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:src="@drawable/prev_arrow" /> </LinearLayout> <LinearLayout android:id="@+id/next" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_alignParentRight="true" android:layout_centerVertical="true" android:paddingLeft="5dip" android:paddingRight="5dip" android:descendantFocusability="blocksDescendants" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:src="@drawable/next_arrow" /> </LinearLayout> </RelativeLayout> 

grid_item.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" > <ImageView android:id="@+id/imageView1" android:layout_width="fill_parent" android:layout_height="100dp" android:src="@drawable/ic_launcher" /> </LinearLayout> 

MainActivity.java

 import java.util.ArrayList; import android.app.Activity; import android.graphics.Rect; import android.os.Bundle; import android.os.Handler; import android.view.Display; import android.view.GestureDetector; import android.view.GestureDetector.SimpleOnGestureListener; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.widget.HorizontalScrollView; import android.widget.LinearLayout; import android.widget.LinearLayout.LayoutParams; public class MainActivity extends Activity { LinearLayout asthmaActionPlan, controlledMedication, asNeededMedication, rescueMedication, yourSymtoms, yourTriggers, wheezeRate, peakFlow; LayoutParams params; LinearLayout next, prev; int viewWidth; GestureDetector gestureDetector = null; HorizontalScrollView horizontalScrollView; ArrayList<LinearLayout> layouts; int parentLeft, parentRight; int mWidth; int currPosition, prevPosition; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); prev = (LinearLayout) findViewById(R.id.prev); next = (LinearLayout) findViewById(R.id.next); horizontalScrollView = (HorizontalScrollView) findViewById(R.id.hsv); gestureDetector = new GestureDetector(new MyGestureDetector()); asthmaActionPlan = (LinearLayout) findViewById(R.id.asthma_action_plan); controlledMedication = (LinearLayout) findViewById(R.id.controlled_medication); asNeededMedication = (LinearLayout) findViewById(R.id.as_needed_medication); rescueMedication = (LinearLayout) findViewById(R.id.rescue_medication); yourSymtoms = (LinearLayout) findViewById(R.id.your_symptoms); yourTriggers = (LinearLayout) findViewById(R.id.your_triggers); wheezeRate = (LinearLayout) findViewById(R.id.wheeze_rate); peakFlow = (LinearLayout) findViewById(R.id.peak_flow); Display display = getWindowManager().getDefaultDisplay(); mWidth = display.getWidth(); // deprecated viewWidth = mWidth / 3; layouts = new ArrayList<LinearLayout>(); params = new LayoutParams(viewWidth, LayoutParams.WRAP_CONTENT); asthmaActionPlan.setLayoutParams(params); controlledMedication.setLayoutParams(params); asNeededMedication.setLayoutParams(params); rescueMedication.setLayoutParams(params); yourSymtoms.setLayoutParams(params); yourTriggers.setLayoutParams(params); wheezeRate.setLayoutParams(params); peakFlow.setLayoutParams(params); layouts.add(asthmaActionPlan); layouts.add(controlledMedication); layouts.add(asNeededMedication); layouts.add(rescueMedication); layouts.add(yourSymtoms); layouts.add(yourTriggers); layouts.add(wheezeRate); layouts.add(peakFlow); next.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { new Handler().postDelayed(new Runnable() { public void run() { horizontalScrollView.smoothScrollTo( (int) horizontalScrollView.getScrollX() + viewWidth, (int) horizontalScrollView.getScrollY()); } }, 100L); } }); prev.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { new Handler().postDelayed(new Runnable() { public void run() { horizontalScrollView.smoothScrollTo( (int) horizontalScrollView.getScrollX() - viewWidth, (int) horizontalScrollView.getScrollY()); } }, 100L); } }); horizontalScrollView.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { if (gestureDetector.onTouchEvent(event)) { return true; } return false; } }); } class MyGestureDetector extends SimpleOnGestureListener { @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { if (e1.getX() < e2.getX()) { currPosition = getVisibleViews("left"); } else { currPosition = getVisibleViews("right"); } horizontalScrollView.smoothScrollTo(layouts.get(currPosition) .getLeft(), 0); return true; } } public int getVisibleViews(String direction) { Rect hitRect = new Rect(); int position = 0; int rightCounter = 0; for (int i = 0; i < layouts.size(); i++) { if (layouts.get(i).getLocalVisibleRect(hitRect)) { if (direction.equals("left")) { position = i; break; } else if (direction.equals("right")) { rightCounter++; position = i; if (rightCounter == 2) break; } } } return position; } } 

让我知道如果有任何问题享受…

Answer 2

这是我的布局：

  <HorizontalScrollView android:id="@+id/horizontalScrollView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:paddingTop="@dimen/padding" > <LinearLayout android:id="@+id/shapeLayout" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginTop="10dp" > </LinearLayout> </HorizontalScrollView> 

我用dynamiccheckbox填充代码。

Answer 3

这是一个很好的教程与代码。 让我知道，如果它适合你！ 这也是一个很好的教程。

编辑

在这个例子中，所有你需要做的就是添加这一行：

 gallery.setSelection(1); 

将适配器设置为图库对象之后，就是这一行：

 gallery.setAdapter(new ImageAdapter(this)); 

UPDATE1

好的，我解决了你的问题。 这个开源库是你的解决scheme。 我也用它来做我的一个项目。 希望这能最终解决你的问题。

UPDATE2：

我build议你通过这个教程 。 你可能会想法。 我想我得到了你的问题，你想水平滚动视图与pipe理单元 。 尝试使用谷歌关键字search或在这里，你可能会得到你的解决scheme。

Answer 4

我用水平variablesListView实现了一些类似的东西。唯一的缺点是，它只适用于Android 2.3及更高版本。

使用这个库就像使用相应的Adapter实现一个ListView一样简单。 图书馆也提供了一个例子

Answer 5

我已经在每一行ListView中创build了一个水平的ListView ，如果你想要单一的你可以做到以下几点

在这里，我只是创buildvideo缩略图的horizo​​ntalListView像这样

这个想法只是连续地将ImageView添加到Horizo​​ntalscrollView的LinearLayout的子项中

注意：记得点火.removeAllViews（）; 在下次加载之前其他的明智会加重孩子

 Cursor mImageCursor = db.getPlaylistVideoImage(playlistId); mVideosThumbs.removeAllViews(); if (mImageCursor != null && mImageCursor.getCount() > 0) { for (int index = 0; index < mImageCursor.getCount(); index++) { mImageCursor.moveToPosition(index); ImageView iv = (ImageView) imageViewInfalter.inflate( R.layout.image_view, null); name = mImageCursor.getString(mImageCursor .getColumnIndex("LogoDefaultName")); logoFile = new File(MyApplication.LOCAL_LOGO_PATH, name); if (logoFile.exists()) { Uri uri = Uri.fromFile(logoFile); iv.setImageURI(uri); } iv.setScaleType(ScaleType.FIT_XY); mVideosThumbs.addView(iv); } mImageCursor.close(); mImageCursor = null; } else { ImageView iv = (ImageView) imageViewInfalter.inflate( R.layout.image_view, null); String name = ""; File logoFile; name = mImageCursor.getString(mImageCursor .getColumnIndex("LogoMediumName")); logoFile = new File(MyApplication.LOCAL_LOGO_PATH, name); if (logoFile.exists()) { Uri uri = Uri.fromFile(logoFile); iv.setImageURI(uri); } } 

我的xml为Horizo​​ntalListView

 <HorizontalScrollView android:id="@+id/horizontalScrollView" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_below="@+id/linearLayoutTitle" android:background="@drawable/shelf" android:paddingBottom="@dimen/Playlist_TopBottom_margin" android:paddingLeft="@dimen/playlist_RightLeft_margin" android:paddingRight="@dimen/playlist_RightLeft_margin" android:paddingTop="@dimen/Playlist_TopBottom_margin" > <LinearLayout android:id="@+id/linearLayoutVideos" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="left|center_vertical" android:orientation="horizontal" > </LinearLayout> </HorizontalScrollView> 

还有我的图像查看每个孩子

 <?xml version="1.0" encoding="utf-8"?> <ImageView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/imageViewThumb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginRight="20dp" android:adjustViewBounds="true" android:background="@android:color/transparent" android:contentDescription="@string/action_settings" android:cropToPadding="true" android:maxHeight="200dp" android:maxWidth="240dp" android:padding="@dimen/playlist_image_padding" android:scaleType="centerCrop" android:src="@drawable/loading" /> 

要了解更多，你可以按照下面的链接，有一些简单的样本

1. http://www.dev-smart.com/?p=34
2. Android中的水平ListView？

Answer 6

您可以使用Horizo​​ntalScrollView来实现水平滚动。 码

 <HorizontalScrollView android:id="@+id/hsv" android:layout_width="fill_parent" android:layout_height="100dp" android:layout_weight="0" android:fillViewport="true" android:measureAllChildren="false" android:scrollbars="none" > <LinearLayout android:id="@+id/innerLay" android:layout_width="wrap_content" android:layout_height="100dp" android:gravity="center_vertical" android:orientation="horizontal" > </LinearLayout> </HorizontalScrollView> 

featured.xml：

 <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="160dp" android:layout_margin="4dp" android:layout_height="match_parent" android:orientation="vertical" > <RelativeLayout android:layout_width="fill_parent" android:layout_height="fill_parent" > <ProgressBar android:layout_width="15dip" android:layout_height="15dip" android:id="@+id/progress" android:layout_centerInParent="true" /> <ImageView android:id="@+id/image" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#20000000" /> <TextView android:id="@+id/textView1" android:layout_width="fill_parent" android:layout_height="30dp" android:layout_alignParentBottom="true" android:layout_alignParentRight="true" android:gravity="center" android:textColor="#000000" android:background="#ffffff" android:text="Image Text" /> </RelativeLayout> </LinearLayout> 

Java代码：

  LayoutInflater inflater; inflater=getLayoutInflater(); LinearLayout inLay=(LinearLayout) findViewById(R.id.innerLay); for(int x=0;x<10;x++) { inLay.addView(getView(x)); } View getView(final int x) { View rootView = inflater.inflate( R.layout.featured_item,null); ImageView image = (ImageView) rootView.findViewById(R.id.image); //Thease Two Line is sufficient my dear to implement lazyLoading AQuery aq = new AQuery(rootView); String url="http://farm6.static.flickr.com/5035/5802797131_a729dac808_s.jpg"; aq.id(image).progress(R.id.progress).image(url, true, true, 0, R.drawable.placeholder1); image.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { Toast.makeText(PhotoActivity.this, "Click Here Postion "+x, Toast.LENGTH_LONG).show(); } }); return rootView; } 

注意：要实现lazyloading，请使用此链接进行AQUIERY

https://code.google.com/p/android-query/wiki/ImageLoading