我可以使用json通过url从服务器数据库中获取所有图像。我在列表视图如何可以给图像的高度和宽度如何设置图片高度和宽度从服务器?
显示所有图像这是main.java
JSONArray json = jArray.getJSONArray("names");
list=(ListView)findViewById(R.id.list);// calls main.xml
adapter=new ImageAdapter(this, json);
list.setAdapter(adapter);
Imageadapter.java
public class ImageAdapter extends BaseAdapter {
Bitmap bmp;
private static LayoutInflater inflater = null;
private ImageView[] mImages;
String[] itemimage;
TextView[] tv;
String itemname;
HashMap<String, String> map = new HashMap<String, String>();
public ImageAdapter(Context context, JSONArray imageArrayJson) {
this.mImages = new ImageView[imageArrayJson.length()];
String qrimage;
try {
for (int i = 0; i < imageArrayJson.length(); i++) {
JSONObject image = imageArrayJson.getJSONObject(i);
qrimage = image.getString("itemimage");
itemname = image.getString("itemname");
map.put("itemname", image.getString("itemname"));
System.out.println(itemname);
byte[] qrimageBytes = Base64.decode(qrimage.getBytes());
bmp = BitmapFactory.decodeByteArray(qrimageBytes, 0,
qrimageBytes.length);
mImages[i] = new ImageView(context);
mImages[i].setImageBitmap(bmp);
}
} catch (Exception e) {
// TODO: handle exception
}
}
public int getCount() {
return mImages.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
return mImages[position];
}
}
My xml view
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
上述代码是显示从服务器数据库中的图像到Android到列表视图。 如何设置这些图像的高度和宽度?
使用ImageView,只需设置宽度和高度属性?除非你在谈论缩放位图,在这种情况下,你可以使用BitmapFactor类来获得这个 – Mimminito 2012-03-26 09:00:29
** IS是一个好主意,从服务器设置高度/宽度?* – 2012-03-26 10:10:44