I have an ImageView that contains a bitmap. Now the bitmap can change size within a known range. This makes the surrounding views to relocate which I want to prevent. I've tried setting margins and padding for the ImageView but without success.
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So I'm loading images from a web service, but the size of the images are sometimes smaller or bigger than other images and the visualization looks silly when I put them in a ListView in android. I'd like to fix the size of my ImageView so that it only shows a portion of the image if it's larger than a preset amount. I've tried everything I can think of setting the setMaxWidth/setMaxHeight, setting the scale type to centerCrop, using ClipableDrawable wrapping my BitmapDrawable, setting using Drawable.setBounds(). I've tried setting in the XML and programmatically, but neither worked. I'm very surprised setting max width/height didn't do anything. Below is the XML I'm using ImageView definition in my layout file
View 1 Replies View RelatedI would like to change the height and width of the image. Displays the image using the canvas: How to change the size of the bitmap?
View 1 Replies View RelatedThe default marquee scroll (i.e., three scrolls of text when list item is selected) in my application's List View works when the typeface is set to Typeface.NORMAL but not when set to Typeface.ITALIC. Is the marquee scroll implemented for TextViews with the ITALIC typeface?
View 2 Replies View RelatedIs the view aware of the orientation change in order to return updated size after a change in orientation? I'm handling the orientation myself (android:configChanges="orientation|keyboardHidden"). Does it means that I have to take into account the orientation state when querying for view.getHeight()? The view returns the same value as before the orientation change. It this the normal behavior or I should "notify" somehow the view to "refresh" its size.
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View 1 Replies View RelatedI have a View that I've placed into a ScrollView.The View paginates text.If the text changes, then the height of this view will also change (expand or contract, depending on whether the new text takes more vertical space or less).For debugging, I draw a rectangle around the view to show its current size. After I repaginate, I cannot get Android to cause the View to change its size -- I have tried calling measure() myself, calling requestLayout(), and calling forceLayout() -- even though my overloaded onMeasure gets called, and calls setMeasuredDimension() with the correct values, the view remains the same size as it was before repagination. What am I missing?
View 2 Replies View Relatedthis problem has been bothering me for days and I cannot figure out why on earth it is happening. I have a method that detects for a face, if a face is detected, the method will draw a rectangle on a canvas along the face.That part works fine.The problem is, when it displays to the image_view in my xml file, it will display on the far left middle of the image view, in a box, rather than in the center with the width as fill_parent.I thought of a possible workaround : to set the bitmap as a bitmapdrawable, but canvas only draws to bitmaps, so I can get the bitmapdrawable in the middle, but with no red box around it.I commented out my testing of bitmap drawable, and left it as what I have now...it only displays to my xml in the far left of the image_view.
View 1 Replies View RelatedI have a Imageview in main.xml, how to set the bitmap the to the imageView in main.xml i can assign bitmap to the local image view in the below code...
View 1 Replies View RelatedI'm working on an Android application that needs to download an image and display it inside an image view. The Bitmap is passed to the main java file and added to the image view like this:
CODE:.......
This works, except that the left side of the image disappears off the screen. The ImageView is in a ScrollView and the scroll view maintains the correct size. This means that there is black space to the right in the ScrollView and the image is cut off to the left.
The XML for the ImageView is this:
CODE:.......
Any idea why my image is being cut off?
I have a Bitmap image (bm) and a an ImageView (iv) of 50 by 50 when i do iv.setImageBitmap(bm) ... only a portion of the entire image is seen ..How can i see the whole image in the 50 dip by 50 dip ImageView...
View 9 Replies View RelatedI started a test project just to get this down. No changes to main.xml. I want to create a widget-sized ImageView (80x100) that contains a Bitmap converted from a TextView. Yes, that sounds very roundabout but this is just for testing; in the end I want the ImageView to have a background image and multiple TextViews. I'm not sure exactly what I'm doing wrong, but nothing is being pushed to the screen.
Is it a problem with declaring the TextView/ImageView and passing it "this" in the constructor? Is it a problem with my layoutParams? Here is the code:
package com.doaf.testproject;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView; Code...
I'm relatively new to Android, and pretty lost with this one.
I've read a lot of previous messages on this topic but couldn't find universal agreement on the whole. I can't reproduce this in house, but a customer got an OutOfMemoryError when using an icon chooser dialog.
This dialog is much like the Grid1 example - only it's in a dialog.
The bitmap memory seems to run out after running the dialog a few times for a customer, resulting in java.lang.OutOfMemoryError: bitmap size exceeds VM budget. Should I try to call recycle on the bitmap from an ImageView when I reuse the view? Or would the ImageView do that anyway?
But even if I do that, that's only a small portion of the bitmaps because most of them are seen without scrolling. The Adapter and the GridView are both local variables and therefore shouldn't be referenced after the dialog is dismissed.
I do believe that it should be possible to use many bitmaps in an app - Google Maps does it, Picture Gallery does it. But maybe I need to learn more rules. Some say you should call bitmap.recycle, some say you shouldn't have to. Many say calling gc.collect will make it worse, etc.
I have a ImageView acting as a top banner on top of a webview. The image of this banner is created in execution time dependending on the resolution of the device. The height of the banner is always the same for each resolution. The only thing that changes is the width, which changes according to the orientation. But, since the width changes and the height doesn't, I end up having sort of 2 images with different proportion. And this is way the scale down/up won't work out for me.
Another problem is that everytime the user rotates the screen, the banner image is created again but Android seems not to update the image and thus I have a banner missing part of it.
I thought about having a real big image that will fit for both landscape and portrait orientation. But this seems not to be a good idea since Android keeps resizing the image everytime so it will fit on the space of the ImageView.
I'm running out of ideas here. Can someone suggest something?
In my project I'm Multiple choice list....in this all text view in white color...i want to change text color. in program I'm use simple xml main.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#ffff00"> <List View android:id="@+id/android:list" android:layout_margin Top="2px" android:layout_marginLeft="2px" android:layout_marginRight="2px" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1"android:background="@drawable/shape_1"android:listSelector="@drawable/shape_3" android:textColor="#ffff00" android:layout_marginBottom="44px" /> </RelativeLayout> I'm ListActivity class setContentView(R.layout.main); setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_multiple_choice, GENRES)); listView =getListView();listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
I would like to set the size of a Bitmap, there are no setWidth() or setHeight() so I don't know how to do this...
View 2 Replies View RelatedI'm trying to get the real size of an image displayed in an image view. Actually my image is larger than the screen and the imageview is resizing the image to diplay it. I'm looking for this new size.I've tried to override the onDraw method of the ImageView in a custom view but I'm not getting the correct height and width.
View 8 Replies View RelatedI'm trying to draw an image in an ImageView, but i want it to be unscaled, with scrollbars as necessary. How can I accomplish this? Right now I just have a drawable set as the android:src of the ImageView in the XML. This autoscales the image to fit the screen width.
View 2 Replies View RelatedI'm trying to add a drawable to a layout, using an ImageView, but the drawable doesn't maintain its size and is rendered at 1dp x 1dp. I've called ImageView.setAdjustViewBounds as per the android documentation but this doesn't seem to help. The Drawable is only visible when the ImageView's height and width are set and the drawable is then rendered at those dimensions.
View 2 Replies View RelatedI am trying to inflate an ImageView that scales a Drawable that I can display in a GalleryView. My code to inflate the view seems to work fine, except that the attributes of the ImageView are not applied.Specifically, the inflated ImageView does not have the width/height that I set for it via the android:layout params in XML.Can someone show me what I'm doing wrong?I want to set the width/height of the image in dp, so that it is the correct size across multiple screen dpis and support Android 1.5+.
View 2 Replies View RelatedI'm writing a Music application and I have already gotten the album arts. However, they came up in various sizes. So, how do I standardized the size of the returned bitmap ?
View 1 Replies View RelatedI've problem with memory of the bitmaps, I'm creating a lot of bitmaps and then releasing them by recycle() and after many retries I get:
java.lang.OutOfMemoryError: bitmap size exceeds VM budget
How to get rid of this? The problem is that even if i close the activity (call onDestroy()), in next program run the bitmap memory is still allocated! (I've also android:clearTaskOnLaunch="true" in my manifest). This is horrible. Can anybody help me with that? I suspect that every application using BitmapFactory.decodeResource must get this exception in some call! Do you have any idea what's going on?
I have the following code which I tried to build a Bitmap from an input stream and I want my output bitmap to be 20 x 20:
BitmapFactory.Options opts = new BitmapFactory.Options(); opts.outHeight = 20; opts.outWidth = 20;
InputStream stream = // an input stream to my image Bitmap bm = BitmapFactory.decodeStream(stream, null, opts);
But when I tried it, I do get a bitmap from the inputstream, but it does not scale it to 20x20 which I specified in the BitmapFactory.Options.
It immediately has trouble with memory. In the LogCat this error is displayed, java.lang.OutOfMemoryError: bitmap size exceeds VM budget. I'm using recycle () and System.gc () but I get the same error. My application, is pressing a button switches to the next image and the images are 854x480 Loading images from the SD Card. show the images as follows
Bitmap imageB; ImageView imgV;
imageB = BitmapFactory.decodeFile ("sdcard / img.png"); imgV.setImageBitmap (imageB);
Release is as follow.
@ Override protected void onDestroy () { super.onPause (); imageBG = null; System.gc ();
}
How can I determine/calculate the byte size of a bitmap (after decoding with BitmapFactory)? I need to know how much memory space it occupies, because I'm doing memory caching/management in my app. (file size is not enough, since these are jpg/png files).
View 1 Replies View RelatedI am doing the following in my app, which at times results in the above error.
Action 1: Button on Main activity calls all pictures using ACTION_PICK (results in a thumbnail view of all pictures on my phone). User picked image (URI) is then passed over to next activity where the image is displayed (ImageView) full screen. When I hit back, I go back to the main activity. If I try to open all pictures and pick a picture again, I get a FORCE CLOSE and the logCat data says "OutofMemoryError: bitmap size exceeds VM budget.
Action 2: I get the same error and FORCE CLOSE when I try to rotate the full-sized picture by changing phone orientation back and forth.
What am I supposed to do to save memory? I can't change the use case of my app... the user has to follow the above steps. How can I free up memory without having to change anything in my app.
In my application i have a functionality where a user can take photo and poet it to a web server or select a photo from galerry and upload.
So initially i used to get below exception for the very* first time* i used to select a photo:
Android: OutofMemoryError: bitmap size exceeds VM budget. then i used:
*options.inSampleSize = 2;*
Now the problem is im still getting the same exception *the only difference is im getting exception after 2-3 times.*
i.e im able to upload 2-3 (one by one) photos and then i get the exception. any suggestions?
I would like to be able to alter the size of some of my ImageViews based on what Drawable they are showing. I've not yet decided on whether I'll get them to read the new dimensions from the Drawable or if I will just have an array/enum storing the heights of these, but what I need help with is the actual changing of the ImageView size.Which of the many many function for altering sizes of things should I be using to change the size of an ImageView while still retaining it's relative positioning in the RelativeLayout it is a part of? I can't work out if I should be changing the bounds of the Drawable or if I should be redefining the LayoutParams of the ImageView or some other method altogether. The drawables are always going to be the same width, but their height will change depending on what is in each tile of a map (which this is rendering).
View 1 Replies View RelatedI am using bitmap image that i have to rotate on fling. its actually a circular image that will act like a spin wheel. so image resolution is like 1000 x 1000 but when i rotate this image and redraw it android give me an exception " java.lang.OutOfMemoryError: bitmap size exceeds VM budget "
View 2 Replies View RelatedI'm writing game with a large amount of .png pictures. All worked fine. Than I added new activity with WebView and got memory shortage. After that I made some experiment - replace game .png images with ones that just fully filled with some color. As result memory shortage had gone.
But I suppose that Bitmap internally hold each pixel separately so such changes should have no effect. Maybe this because of initial images have alpha channel and my test images have not it?
But actually question is: Will decreasing .png images files sizes make some effect on decreasing usage of VM application heap or not?