从URL的Android填充的ImageView [英] Android fill ImageView from URL
本文介绍了从URL的Android填充的ImageView的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
你好我试图将图像从我曾尝试加载它作为一个位图，但没有呈现出URL添加到一个ImageView的。因此，没有人知道该怎么做这个最好的方法是什么，或我做错了？
我的继承人code
@覆盖
保护无效的onCreate（捆绑savedInstanceState）{
// TODO自动生成方法存根
super.onCreate（savedInstanceState）;
//检查preferences这台UI
的setContentView（R.layout.singlenews）;
TextView的HEADERTEXT =（的TextView）findViewById（R.id.header_text）;
headerText.setText（最新消息）;
PostTask posttask;
posttask =新PostTask（）;
posttask.execute（）;
}公共无效loadNews（）{ newsStr = getIntent（）getStringExtra（singleNews）;
尝试{
JSONObject的OBJ =新的JSONObject（newsStr）;
内容= obj.getString（内容）;
标题= obj.getString（标题）;
全名= obj.getString（全名）;
创建= obj.getString（创建）;
NewsImageURL = obj.getString（image_primary）;
标语= obj.getString（标语）; 元=发表：+全名++创建的;
网址aURL =新的URL（NewsImageURL）;
康涅狄格州的URLConnection = aURL.openConnection（）;
conn.connect（）;
InputStream为= conn.getInputStream（）;
/ *缓冲总是好的性能加分。 * /
二BufferedInputStream为=新的BufferedInputStream（是）;
/ *德code URL数据为位图。 * /
BM = BitmapFactory.de codeStream（之二）;
bis.close（）;
is.close（）;
/ *将位图到将要返回的ImageView的。 * /
Log.v（LC，CONTENT =+内容）;
Log.v（LC，标题=+称号）;
Log.v（LC，全名=+全名）;
Log.v（LC，创建=+创建）;
Log.v（LC，NewsImage =+ NewsImageURL）;
Log.v（LC，元=+间位）;
Log.v（LC，标语=+标语）;}赶上
（JSONException E）{
// TODO自动生成catch块
e.printStackTrace（）;
}赶上（IOException异常五）{
// TODO自动生成catch块
e.printStackTrace（）;
}}
公共类PostTask扩展的AsyncTask＆LT;无效，字符串，布尔值＆GT; { @覆盖
保护布尔doInBackground（虚空...... PARAMS）{
布尔结果= FALSE;
loadNews（）;
publishProgress（进步）;
返回结果;
} 保护无效onProgressUpdate（字符串...进度）{
StringBuilder的海峡=新的StringBuilder（）;
的for（int i = 1; I＆LT; progress.length;我++）{
str.append（进度[I] +）; }
} @覆盖
保护无效onPostExecute（布尔结果）{
super.onPostExecute（结果）;
Log.v（BGThread，开始FILLIN数据）; fillData（）; }
}公共无效fillData（）{ 新闻浏览= LayoutInflater.from（getBaseContext（））。膨胀（R.layout.newsdetailact，
空值）; TextView的标题=（TextView中）NewsView.findViewById（R.id.NewsTitle）;
Title.setText（职称）; TextView的标语=（TextView中）NewsView.findViewById（R.id.subtitle）;
Tagline.setText（标语）; TextView的元数据=（TextView中）NewsView.findViewById（R.id.meta）;
MetaData.setText（甲基）;
ImageView的NewsImage =（ImageView的）NewsView.findViewById（R.id.imageView2）;
NewsImage.setImageBitmap（BM）; TextView的日程地址搜索Maincontent =（TextView中）NewsView.findViewById（R.id.maintext）;
MainContent.setText（内容）; Log.v（BGThread，填充效果）;适配器=新MergeAdapter（）;adapter.addView（新闻浏览）;
setListAdapter（适配器）;
}}
解决方案
请使用code尖晶石URL图像转换为位图，并显示在图像视图。
网址URL =新的URL（http://image10.bizrate-images.com/resize?sq=60&uid=2216744464）;
BMP位图= BitmapFactory.de codeStream（url.openConnection（）的getInputStream（））;
imageView.setImageBitmap（BMP）;
T认为它帮助你。
感谢
Hi i'm trying to add an image to an ImageView from a URL i have tried loading it as a bitmap but nothing is showing. so does anyone know what the best method to do this is or what i'm doing wrong?
heres my code
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
//Check Preferences which sets UI
setContentView(R.layout.singlenews);
TextView headerText = (TextView) findViewById(R.id.header_text);
headerText.setText("Latest News");
PostTask posttask;
posttask = new PostTask();
posttask.execute();
}
public void loadNews(){
newsStr = getIntent().getStringExtra("singleNews");
try {
JSONObject obj = new JSONObject(newsStr);
content = obj.getString("content");
title = obj.getString("title");
fullName = obj.getString("fullname");
created = obj.getString("created");
NewsImageURL = obj.getString("image_primary");
tagline = obj.getString("tagline");
meta = "posted by: " + fullName + " " + created;
URL aURL = new URL("NewsImageURL");
URLConnection conn = aURL.openConnection();
conn.connect();
InputStream is = conn.getInputStream();
/* Buffered is always good for a performance plus. */
BufferedInputStream bis = new BufferedInputStream(is);
/* Decode url-data to a bitmap. */
bm = BitmapFactory.decodeStream(bis);
bis.close();
is.close();
/* Apply the Bitmap to the ImageView that will be returned. */
Log.v("lc", "content=" + content);
Log.v("lc", "title=" + title);
Log.v("lc", "fullname=" + fullName);
Log.v("lc", "created=" + created);
Log.v("lc", "NewsImage=" + NewsImageURL);
Log.v("lc", "Meta=" + meta);
Log.v("lc", "tagline=" + tagline);
} catch
(JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public class PostTask extends AsyncTask<Void, String, Boolean> {
@Override
protected Boolean doInBackground(Void... params) {
boolean result = false;
loadNews();
publishProgress("progress");
return result;
}
protected void onProgressUpdate(String... progress) {
StringBuilder str = new StringBuilder();
for (int i = 1; i < progress.length; i++) {
str.append(progress[i] + " ");
}
}
@Override
protected void onPostExecute(Boolean result) {
super.onPostExecute(result);
Log.v("BGThread", "begin fillin data");
fillData();
}
}
public void fillData(){
NewsView = LayoutInflater.from(getBaseContext()).inflate(R.layout.newsdetailact,
null);
TextView Title = (TextView) NewsView.findViewById(R.id.NewsTitle);
Title.setText(title);
TextView Tagline = (TextView) NewsView.findViewById(R.id.subtitle);
Tagline.setText(tagline);
TextView MetaData = (TextView) NewsView.findViewById(R.id.meta);
MetaData.setText(meta);
ImageView NewsImage = (ImageView)NewsView.findViewById(R.id.imageView2);
NewsImage.setImageBitmap(bm);
TextView MainContent = (TextView) NewsView.findViewById(R.id.maintext);
MainContent.setText(content);
Log.v("BGThread", "Filled results");
adapter = new MergeAdapter();
adapter.addView(NewsView);
setListAdapter(adapter);
}
}
解决方案
Please use this code spinet convert url images to bitmap and show it in image view .
URL url = new URL("http://image10.bizrate-images.com/resize?sq=60&uid=2216744464");
Bitmap bmp = BitmapFactory.decodeStream(url.openConnection().getInputStream());
imageView.setImageBitmap(bmp);
T think it help you.
Thanks
这篇关于从URL的Android填充的ImageView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
