2 lidaming and LiDaming_and 于 2012.11.06 17:16 提问

android-在GridView视图中设置水平滚动的图像布局

我想以gridview的视图显示图像缩略图,要求这些图像排成一列以水平滚动条的形式显示。我设置了很多参数,但是检查不出哪里出错了。显示出来的图像根本不是按照原计划显示的。请大家帮忙纠错,谢谢!
mian.xml

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

    <GridView
        android:layout_width="500dp"
        android:layout_height="400dp"
        android:id="@+id/grid"
        android:columnWidth="300dp"
        android:padding="5dp"
        android:horizontalSpacing="10dp"
        android:verticalSpacing="10dp"
        android:scrollbars="horizontal"
        android:stretchMode="spacingWidthUniform">
    </GridView>
</LinearLayout>

Activity 代码:

//---显示图像---
Integer[] imageIDs = {
        R.drawable.library,
        R.drawable.library,
        R.drawable.library,
        R.drawable.library,
        R.drawable.library,
        R.drawable.library,
        R.drawable.library                   
};

/** 当activity第一次创建时,调用以下方法 */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    GridView gridView = (GridView) findViewById(R.id.grid);
    gridView.setAdapter(new ImageAdapter(this));
    gridView.setNumColumns(imageIDs.length);

}

public class ImageAdapter extends BaseAdapter
{
    private Context context;

    public ImageAdapter(Context c)
    {
        context = c;
    }

    public int getCount() {
        return imageIDs.length;
    }

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

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

    public View getView(int position, View convertView, ViewGroup parent)
    {
        ImageView imageView;
        if (convertView == null) {
            imageView = new ImageView(context);
            imageView.setLayoutParams(new GridView.LayoutParams(100, 100));
            imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
        } else {
            imageView = (ImageView) convertView;
        }
        imageView.setImageResource(imageIDs[position]);
        return imageView;
    }
}

3个回答

nana4ever
nana4ever   2012.11.07 10:12
已采纳
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;

public class Test2Activity extends Activity {   
    /** Called when the activity is first created. */   
     public Integer[] imageIDs = {   
                R.drawable.library,   
                R.drawable.library,   
                R.drawable.library,      
                R.drawable.library,      
                R.drawable.library,   
                R.drawable.library,           
                R.drawable.library                         
    };

    @Override
    public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
            setContentView(R.layout.main);

            GridView gridView = (GridView) findViewById(R.id.grid);
            gridView.setAdapter(new ImageAdapter(this, imageIDs));
            gridView.setNumColumns(imageIDs.length);

    }

    class ImageAdapter extends BaseAdapter
    {
        private Context context;
        Integer[] imageIDs;

        public ImageAdapter(Context c, Integer[] imageIDResults)
        {
            context = c;
            imageIDs = imageIDResults;
        }

        public int getCount() {
            return imageIDs.length;
        }

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

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

        public View getView(int position, View convertView, ViewGroup parent)
        {
            ImageView imageView;
            if (convertView == null) {
                imageView = new ImageView(context);
                imageView.setLayoutParams(new GridView.LayoutParams(100, 100));
                imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
            } else {
                imageView = (ImageView) convertView;
            }
            imageView.setImageResource(imageIDs[position]);
            return imageView;
        }
    }
}
nana4ever
nana4ever 哦,还得改XML文件。
大约 5 年之前 回复
nana4ever
nana4ever 我运行这段代码好用啊。改变了adapter的构造函数,从activity中传值到adapter。
大约 5 年之前 回复
LiDaming_and
LiDaming_and 代码很好,我试过了不能以水平滚动条的形式显示。
大约 5 年之前 回复
nana4ever
nana4ever 试一下这个方法能实现不,告诉我啊~·~
大约 5 年之前 回复
ce_la_vie
ce_la_vie   2012.11.08 13:55

试试下面的代码:

    <LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical">
 <HorizontalScrollView 
       android:id="@+id/horizontalScrollView1" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content"
       android:fillViewport="true"
       android:scrollbars="none" >
    <GridView
        android:layout_width="500dp"
        android:layout_height="400dp"
        android:id="@+id/grid"
        android:columnWidth="300dp"
        android:padding="5dp"
        android:horizontalSpacing="10dp"
        android:verticalSpacing="10dp"
        android:scrollbars="horizontal"
        android:stretchMode="spacingWidthUniform">
    </GridView>
     </HorizontalScrollView>
</LinearLayout>
clcurie_11
clcurie_11   2012.11.12 14:04
<HorizontalScrollView 
   android:id="@+id/horizontalScrollView1" 
   android:layout_width="fill_parent" 
   android:layout_height="wrap_content"
   android:fillViewport="true"
   android:scrollbars="horizontal" >

<GridView
    android:layout_width="500dp"
    android:layout_height="400dp"
    android:id="@+id/grid"
    android:columnWidth="300dp"
    android:padding="5dp"
    android:horizontalSpacing="100dp"
    android:verticalSpacing="10dp"
    android:scrollbars="horizontal"
    android:stretchMode="spacingWidthUniform">
</GridView>
</HorizontalScrollView>
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