我可以使用json通過url從服務器數據庫中獲取所有圖像。我在列表視圖如何可以給圖像的高度和寬度如何設置圖片高度和寬度從服務器?
顯示所有圖像這是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>
上述代碼是顯示從服務器數據庫中的圖像到Android到列表視圖。 如何設置這些圖像的高度和寬度?
使用ImageView,只需設置寬度和高度屬性?除非你在談論縮放位圖,在這種情況下,你可以使用BitmapFactor類來獲得這個 – Mimminito 2012-03-26 09:00:29
** IS是一個好主意,從服務器設置高度/寬度?* – 2012-03-26 10:10:44