我試圖創建一個帶有小圖像的ImageView列表,並通過點擊來顯示大圖。我在AsyncTask中使用解析器從站點下載。只有右鍵使用HashMap中的值
第一步(「doInBackground」)解析器從小圖像讀取URL並將它們放到ArrayList<HashMap<String, String>>
。我使用密鑰「imgUrlSmall」
然後從大圖像讀取URL並放入相同的ArrayList。使用鍵「imgUrlBig」
在「onPostExecute」它創造了ImageViews並設置圖像imageViewArray[i].setImageDrawable(grabImageFromUrl(text));
然後將其設置在ClickListener,在通過點擊圖片就開始新的活動,並把那裏的大圖像的URL。
現在程序顯示所有圖像(大和小)。如何將imageViewArray放入只有值爲「imgUrlSmall」的值。並把正確的價值放在?
也許是一些驗證,就像如果map.containsKey?
對於第二部分,以使putExtra也許把所有的值與關鍵「imgUrlBig」以非標準ArrayList<String>
,然後通過點擊圖像使用v.getId()
?
對不起,我的英語
這裏的所有代碼:
doInBackground
protected ArrayList<HashMap<String, String>> doInBackground(String... params) {
ArrayList<HashMap<String, String>> imgItems = new ArrayList<HashMap<String, String>>();
/* --First Parser-- */
HtmlCleaner htmlCleaner = new HtmlCleaner();
URL url = new URL(BLOG_URL);
TagNode root = htmlCleaner.clean(url);
Object[] statsNode3 = root.evaluateXPath(XPATH_STATS3);
for (Object tag : statsNode3){
TagNode aTag = (TagNode) tag;
String href = aTag.getAttributeByName("src").trim();
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put("imgUrlSmall", href);
// adding HashList to ArrayList
imgItems.add(map);
}
/* --Second Parser-- */
HtmlCleaner htmlCleaner2 = new HtmlCleaner();
URL url2 = new URL(BLOG_URL);
TagNode root2 = htmlCleaner2.clean(url2);
Object[] statsNode_Full_Image = root2.evaluateXPath(XPATH_STATS4);
for (Object tag : statsNode_Full_Image){
TagNode aTag = (TagNode) tag;
String href = aTag.getAttributeByName("href").trim();
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put("imgUrlBig", href);
// adding HashList to ArrayList
imgItems.add(map);
}
return imgItems;
}
onPostExecute
protected void onPostExecute(ArrayList<HashMap<String, String>> imgItems) {
String text="";
int i=0;
ImageView[] imageViewArray = new ImageView[imgItems.size()];
for (HashMap<String, String> map : imgItems)
for (Entry<String, String> mapEntry : map.entrySet())
{
text = mapEntry.getValue();
// create ImageView
imageViewArray[i] = new ImageView(Test4.this);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(50,50);
imageViewArray[i].setImageDrawable(grabImageFromUrl(text));
imageViewArray[i].setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
System.out.println(v.getId());
Intent intent = new Intent(v.getContext(), Full_Image_Activity.class);
intent.putExtra("imgUrlBig", url); //Here i don`t know how to put the url
startActivityForResult(intent, 0);
}
});
// Let's get the root layout and add our ImageView
RelativeLayout layout = (RelativeLayout) findViewById(R.id.moreImages);
layout.addView(imageViewArray[i], params);
i++;
}
}