我有一个图片的URL,想要在ImageView中显示这张图片,但我无法做到。
如何实现这个功能呢?
我有一个图片的URL,想要在ImageView中显示这张图片,但我无法做到。
如何实现这个功能呢?
我试过的最佳方法,而不使用任何库
public Bitmap getbmpfromURL(String surl){
try {
URL url = new URL(surl);
HttpURLConnection urlcon = (HttpURLConnection) url.openConnection();
urlcon.setDoInput(true);
urlcon.connect();
InputStream in = urlcon.getInputStream();
Bitmap mIcon = BitmapFactory.decodeStream(in);
return mIcon;
} catch (Exception e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
return null;
}
}
public class MainActivity extends Activity {
Bitmap b;
ImageView img;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
img = (ImageView)findViewById(R.id.imageView1);
information info = new information();
info.execute("");
}
public class information extends AsyncTask<String, String, String>
{
@Override
protected String doInBackground(String... arg0) {
try
{
URL url = new URL("http://10.119.120.10:80/img.jpg");
InputStream is = new BufferedInputStream(url.openStream());
b = BitmapFactory.decodeStream(is);
} catch(Exception e){}
return null;
}
@Override
protected void onPostExecute(String result) {
img.setImageBitmap(b);
}
}
}
dependencies {
// RxAndroid
compile 'io.reactivex.rxjava2:rxandroid:2.0.0'
compile 'io.reactivex.rxjava2:rxjava:2.0.0'
// Utilities
compile 'org.apache.commons:commons-lang3:3.5'
}
public void setImageFromUrl(final ImageView imageView, final String urlString) {
Observable.just(urlString)
.filter(new Predicate<String>() {
@Override public boolean test(String url) throws Exception {
return StringUtils.isNotBlank(url);
}
})
.map(new Function<String, Drawable>() {
@Override public Drawable apply(String s) throws Exception {
URL url = null;
try {
url = new URL(s);
return Drawable.createFromStream((InputStream) url.getContent(), "profile");
} catch (final IOException ex) {
return null;
}
}
})
.filter(new Predicate<Drawable>() {
@Override public boolean test(Drawable drawable) throws Exception {
return drawable != null;
}
})
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<Drawable>() {
@Override public void accept(Drawable drawable) throws Exception {
imageView.setImageDrawable(drawable);
}
});
}
loadImage("http://relinjose.com/directory/filename.png");
给你
void loadImage(String image_location) {
URL imageURL = null;
if (image_location != null) {
try {
imageURL = new URL(image_location);
HttpURLConnection connection = (HttpURLConnection) imageURL
.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream inputStream = connection.getInputStream();
bitmap = BitmapFactory.decodeStream(inputStream);// Convert to bitmap
ivdpfirst.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
} else {
//set any default
}
}
ivdpfirst
是什么? - Big McLargeHuge试试这个:
InputStream input = contentResolver.openInputStream(httpuri);
Bitmap b = BitmapFactory.decodeStream(input, null, options);
private void loadImage(String pUrl) {
Thread imageDataThread = new Thread(() -> {
try {
URL tUrl = new URL(pUrl);
Bitmap imageBitmap = BitmapFactory.decodeStream(tUrl.openConnection().getInputStream());
runOnUiThread(() -> image_preview.setImageBitmap(imageBitmap));
} catch(IOException pExc) {
showToast("Error loading image for this question!");
pExc.printStackTrace();
}
});
imageDataThread.start();
}