我有一个android galleryview的问题,在我的应用程序中我有很多图片。我想通过画廊展示它们并使它们可以选择。我想出了将它们显示为水平可滚动并使它们可以用Galleryview选择,但我一次需要在屏幕上显示一个图像,在用户水平滚动滚动条之后,必须显示另一个图像。我的测试代码如下所示,屏幕上显示3张图片,来自http://www.androidpeople.com/android-gallery-example:
package com.projects.cards;
import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;
public class GaleryTestActivity extends Activity {
private Gallery gallery;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.galery);
gallery = (Gallery) findViewById(R.id.examplegallery);
gallery.setAdapter(new AddImgAdp(this));
gallery.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View v, int position, long id) {
// Displaying the position when the gallery item in clicked
Toast.makeText(GaleryTestActivity.this, "Position=" + position, Toast.LENGTH_SHORT).show();
}
});
}
public class AddImgAdp extends BaseAdapter {
int GalItemBg;
private Context cont;
// Adding images.
private Integer[] Imgid = {
R.drawable.a_1, R.drawable.a_2, R.drawable.a_3, R.drawable.a_4, R.drawable.a_5, R.drawable.a_6, R.drawable.a_7
};
public AddImgAdp(Context c) {
cont = c;
TypedArray typArray = obtainStyledAttributes(R.styleable.GalleryTheme);
GalItemBg = typArray.getResourceId(R.styleable.GalleryTheme_android_galleryItemBackground, 0);
typArray.recycle();
}
public int getCount() {
return Imgid.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 imgView = new ImageView(cont);
imgView.setImageResource(Imgid[position]);
// Fixing width & height for image to display
imgView.setLayoutParams(new Gallery.LayoutParams(200, 160));
imgView.setScaleType(ImageView.ScaleType.FIT_XY);
imgView.setBackgroundResource(GalItemBg);
return imgView;
}
}
}
我该如何解决这个问题?
提前致谢..
答案 0 :(得分:0)
您可以尝试使用填充父级返回视图作为其宽度,其中包含来自适配器的图像视图getView()...
或者你也可以这样做
getview功能
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater iteminflater = LayoutInflater.from(cont);
View gallaryitem = iteminflater .inflate(R.layout.gallaryitem, null);
ImageView imgView= (ImageView ) gallaryitem .findViewById(R.id.image);
imgView.setImageResource(Imgid[position]);
gallaryitem .setBackgroundResource(GalItemBg);
return gallaryitem ;
}
gallaryitem.xml
<LinearLayout android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android" >
<LinearLayout android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center_horizontal"
xmlns:android="http://schemas.android.com/apk/res/android" >
<ImageView android:layout_width="wrap_content"
android:id="@+id/image"
android:layout_height="wrap_content"
android:src="@drawable/icon"
xmlns:android="http://schemas.android.com/apk/res/android" >
</ImageView>
</LinearLayout>
</LinearLayout>
答案 1 :(得分:0)
我已经实现了画廊视图,如下面链接中提到的那样。请尝试:Android gallery with caption
答案 2 :(得分:0)
据我了解,您希望当前聚焦的图像占用所有屏幕空间。您可以通过设置ImageView的宽度来将其绑定到Gallery(在getView中)来实现此目的。尝试设置图像的宽度以匹配设备屏幕的宽度。
请注意,您还可以使用gallery.setSpacing(...)方法设置图库中项目之间的间距。
我无法告诉你如何显示滚动条,抱歉。