I have a view that I am drawing to a bitmap, saving to disk and then putting in an ImageView via setImageURI. However, when the image is displayed in the ImageView it is not being shown at the correct size. It is about 1/3 smaller than it should be. I'm guessing that this is a density issue, but I can't figure out what's going wrong (my emulator is WVGA).
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I can't seem to get my ImageView to display its source image in its original size. The ImageView looks like this:
<ImageView android:id="@+id/Logo"
android:src="@drawable/logo" android:layout_width="wrap_content"
android:layout_height="wrap_content" > </ImageView>
The source image is 140 pixels wide, yet on the Nexus One's screen, which is 480 pixels wide it uses up half of the width. Using absolute values in px or dp for the width and height changes nothing. The image also looks very antialiased from the upscaling. Why is this happening and how can I prevent it?
I'm using ImageView.setImageURI() to render an image that has been previously downloaded from the Internet. It works fine, but I haven't understood whether the call is blocking or not. In my code, I've implemented a background thread to download the bits, in the meantime a placeholder is rendered, and as soon as a download is complete, setImageURI() is called. This approach is used both for a Gallery with thumbnails and for a single, large rendered with ImageView. The thing is working, but I see that the application freezes for a while when a download has been completed and setImageURI() is called. Which make me wonders whether I'm using it properly.
For the record, I know that the images I'm downloading are larger than I need (at least initially); that is, they are much larger than the thumbnail and the large viewer. Since images, once downloaded, are stored locally forever, I should probably create some smaller-size previews in background and then pass them to Gallery and ImageView? Would that make the UI really more responsive?
I'm having a problem with setImageURI on my ImageView objects. I was using setimageResource(R.drawable.x), which was working fine, but now I'm trying to change over to using URIs so that I can be more flexible about my image source (not constrained to pre-packaged images).
I'm using ImageView.setImageURI(uri), where uri is (for example android.resource://com.example.hellogridview/2130837520, which I created by doing Uri.pars ("android.resource:// com.example.hellogridview/" + R.drawable.x). I took this method from my MediaPlayer, where I created URIs for R.raw wav files from this path.
It's not throwing any errors that I can see, but it's just displaying blank images. The images are ~150px each way and I'm displaying them about half size - would that cause a problem?
I am displaying images and some text in a list view with an adapter. The images are pulled from the web, then cached locally and displayed. The images are already small (60px square), and I know their size, so I'm using the advice from here suggesting I use setImageURI instead of decoding the bitmap. The class that does the work is a modified version of Fedor's ImageLoader
The code attaches a stub drawable to the ImageView until the desired image is downloaded from the web, then loads the cached file from the sdcard. In Android 2.2 this works just fine. It's fast, and I don't get OOM crashes. On 2.1, though, I get the following error:
CODE:...............
The ImageLoader class is as follows:
Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
CODE:.....................
Is related to: http://stackoverflow.com/questions/2307374/need-suggetsion-about-a-mixed-uri-int-id-images-ambient
My problem is:
CODE:......................
Does NOT work. why?
I know that
CODE:........................
work.
But that does NOT solve my problem. because I want to set the image with an uri independenty if this come from a resource or come from the camera ACTION_PICK intent...
Can you make an ImageView load an image from a remote server through the ImageView.setImageURI(URI uri) method?
View 2 Replies View RelatedI am running into a very weird thing. I have an ImageView, and when I call setImageURI with an image, it seems to change the size of the image view.
CODE:..............
The default image is 195 x 195, i am trying to set the image to be 200 x 200, after setting the image using setImageURI, i get the dimensions back and it says it's 48 x 48.
I have tried a bunch of different android:scaleType parameters, and I couldn't find anything that worked.
I also tried explicitly setting the size (layout_width="200px") and it seems to work.
Is there a way to load an image file into an ImageView object, and then define a transparent color for this object?
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View 2 Replies View RelatedI'm wondering..
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3)How would I run a check to see if the space is taken up by another Imageview (must specifically be an imageview)
4) How would I make the Imageview "clickable" e.g if the user clicks the image it'll do something?
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How can we removed image displayed in Imageview?
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