I'm currently looking for a way to use a black and white bitmap to mask the alpha channel of another bitmap or Drawable on Android. I'm curious as to what the best way to do this is. I certainly have a couple of ideas for how to do this, but they are not optimal.
I need to be able to apply a new mask to the image every so often (the black and white bitmap will change every few seconds).
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How do I convert a Drawable into a Bitmap?
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View 2 Replies View RelatedI'm trying to use the in-built Media app but am finding it rather poor for two main reasons.
One is that it scans my entire SD card for music to play, which I really don't want it to do as it finds my podcasts downloaded by acast and the tags in those MP3 files are all over the place so make a mess of the Music Player lists. I've tried adding a .nomedia file to the podcast directory as suggested on another site but HTC's app doesn't pay any attention to that.
The second issue is that despite my files having MP3 track number tags, the Music Player app usually ignores those and sorts the tracks into alphabetical order which just doesn't work for a lot of my albums. It's not consistent with sorting, e.g. if I pick an album off the Albums list the tracks are in order and play in order in the track list for that album so I can hit the first track and it plays in order, but if I go back up to the albums screen and add the whole album to a playlist, sometimes it puts the tracks in order, other times it re-orders them in alphabetical order of track name. If I go to a particular artist or composer and select an album, it normally sorts the tracks by alphabetical order this time instead of tagged track order.. This is all with the same album too so it's not that some albums have track number ID3 tags and others don't.
I copy the MP3s across the USB link, I'm not using HTC Sync as it won't run on my desktop computer (a linux box), so I don't know if HTC Sync can help out here or not.
I am running my application in the emulator using a high density skin (like WVGA800). However the ressources in my application are loaded from the drawable- mdpi folder instead of drawable-hdpi ... what else should I do so that android use the correct folder ?
View 4 Replies View RelatedI have a very large image and I only want to display a section the size of the display (no scaling), and the section should just be the center of the image. Because the image is very large I cannot read the entire image into memory and then crop it. This is what I have so far but it will give OutOfMemory for large images. Also I don't think inSampleSize applies because I want to crop the image, not lower the resolution.
Uri data = getIntent().getData();
Input Stream is = getContentResolver().openInputStream(data);
Bitmap bitmap = BitmapFactory.decodeStream(is, null, null);
Any help would be great?
I am 1) taking a picture and 2) then draw another Bitmap on top of it 3) then I store it
I am doing it as follows and it works on the emulator.
On the device I get a OutOfMemoryError: bitmap size exceeds VM budget android.graphics.Bitmap.nativeCopy(Native Method) android.graphics.Bitmap.copy(Bitmap.java:199) in the line copy the Bitmap to get a mutable Bitmap.
CODE:...........
What I am asking:
a) Is there a better way to do what I am doing? 1) take a picture 2) draw another Bitmap on top of it 3) then I store it
b) What is the best way to create a mutable Bitmap from the picture I just took with the camera?
In my app, resolution is not an issue. If it works better for small photos that would be fine.
I have two questions actually:
Is it better to draw an image on a bitmap or create a bitmap as resource and then draw it over a bitmap? Performance wise... which one is better?
If I want to draw something transparent over a bitmap, how would I go about doing it?
If I want to overlay one transparent bitmap over another, how would I do it?
My goal is the draw a bitmap onto another bitmap but rotated 90 degress. whats the most efficient way to do that. My current method is as follows which is horribly bad because it creates a new bitmap every time.
CODE:.....................
I want to draw a shape(many circles particularly) into a Specific Bitmap. I have never used canvas / 2D graphs etc. As i see it i create a Drawable put the bitmap in it then "canvas-it" to the shapes i want etc.
View 1 Replies View RelatedI am new application development. I am using Eclipse for making applications. When trying to create new project using Eclipse It is not creating simple res/drawable/ instead its creating three drawable folder. i.e. 1] drawable-hdpi 2] drawable-ldpi, 3]drawable-mdpi What is this all three for? General scenario as per Google it needs res/drawable/ to save icon image. Now on Eclise where to save icons? On all folder or?
View 4 Replies View RelatedAccording to official documentation Google says that "Once you've defined your Drawable in XML, save the file in the res/drawable/ directory of your project." is the way to add a XML drawable to the project. But when I created the project ADT created 3 different drawable folders for mdpi, hdpi, and ldpi. So when I wanted to create my XML drawable, I right click on my drawable-hdpi folder and select "Add new Android XML file", and there I have to select what kind of XML file I want to create, but there isn't "drawable" to select. If I create new text file and save it as button_drawable.xml Eclipse says that there is an Error in the file and that It can't build my project.
View 3 Replies View RelatedWhen i have an ImageButton and a drawable and i want to do something like the Drawer or Twitter where when i press the button and the corner of the image is highlighted over the edge, in drawer its yellow, in twitter its white. Like the one below.How do i set my drawable without using a lot of images?
View 1 Replies View RelatedIn this linked image , I see the button on the right quite often in a lot of apps. On my Moto Droid, it is used extensively in the settings app. It is also used as the default AlertDialog icon. Can I use this via a android.r.drawable?
View 2 Replies View RelatedI created a new Drawable with: Drawable dx = resources.getDrawable(R.drawable.mydaysminipic_ov); dx.setColorFilter(0xff00ff00, Mode.SRC_ATOP);
and for: updateViews.setImageViewResource(predefinedDraw, --> ID from dx); I need the ID from it... but how to get?
Or any other Idea how to assign my Drawable dx to the above predefinedDraw?
I want to make a Drawable touchable for a component I am creating, does anyone know how to do that? code...
View 2 Replies View RelatedIs it possible to convert a Canvas to Drawable?I may be really off in my solution, so if you have a better suggestion, please do tell me. This is what I'm trying to do.I'm trying to create a custom RadioButton. to set different states of the radio button, I need to use this parameter and one of the parameter to addState is Drawable. I know I can easily provide an image file and use it as a Drawable, but I want to do some image manipulation to the image before using it.There is a tutorial in ApiDemo called AlphaBitmap. It uses the onDraw method of a View to change a PNG file to full red and draw something with a gradient. So I customized it to shade an icon with gradient. So the problem now is that this is a View, and the View works perfectly fine if I add this View to the main view. But i want to convert this View to Drawable so I can use it as one of the parameter in addState. What I really want to achieve is to have different colour shades for different state of the RadioButton without providing different images to do so.
View 6 Replies View RelatedMy app has loads of images in the drawable folder, and I want to organize them into sub folders to make them more manageable. When I create a new folder, and move the images, they are no longer found (and not compiled into the R.java file). Can this be done, or do all my hundreds of images have to sit directly in the drawable folder?
View 9 Replies View RelatedI have a gridView generated using BaseAdaptor. (and implementing methods getView() , getCount() ,...) My problem is that i want to specify a drwable image for each ImageView created using BaseAdaptor.
i tried this line: myBaseAdapterInstance.getView(i, null, gridview).setImageDrawable(R.drawable.myimage);
where i is the position of the ImageView that i want.
But myImage isnt displayed on the gridView.
I tried replacing scrollbar image with another drawable,setting scrollbar to a listview,but scrollbar image is appearing very weird,it is stretched vertically. I am setting to list view as android:scrollbarThumbVertical="@drawable/scrollbar" android:scrollbarTrackVertical="@drawable/scrollbar"
Is there any other attribute i need to set to make image appear properly.
I am trying to setup a selector drawable in my asset file like this: * 2 different images for 'on'/'off' mode in rest mode (i.e. it does not has focus) * another 2 different images for 'on'/'off' mode in focus mode (i.e. it has the focus). In my case, the rest mode works, but the 'focus' mode does not. Can you please tell me what am I missing in the focus mode? Code...
View 4 Replies View RelatedI have built android 2.1 on freescale's i.MX platform. But after running Gallery3D, it will crash with the log of failed to load resource. I found that the whole drawable-hdpi/ (it really contains in the Gallery3D source code res/) is not in the apk package, and cause lack of drawable-hdpi/icon_cancel.png. The apk only contains drawable-mdpi/ and drawable/. My question is why the drawable-hdpi/ resource is dropped when building apk? Per my understanding is that, which drawable-* resource loading is determined on runtime, and all the drawable-* should be in the apk package.
View 7 Replies View RelatedIs there a way to detect whether a image was pulled from the folder res/drawable or res/drawable-hdpi?I am trying to save space and have a program that is using some hdpi bitmaps and some mdpi bitmaps. When an image is placed in drawable-hdpi it automatically replaces the mdpi version. I need to know when this happens beacuseI am using bitamp.resize() to fix the image sizes.The problem is that the getDensity() method (in the if statment after the && ) returns the screen density and I need the original bitmap density. This allays matched the screenDPI and returns false. I have a lot of artwork and do not want to duplicate everything for every size screen. I am trying to just create hdpi bitmaps for the ones that don't look good when re-sized.
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View 1 Replies View RelatedI really appreciate if someone can help me with using how to use shape drawable as my background xml for my view. This is what I tried: But I never get the color. Android always gives me black text on white background, regardless what color attribute I put.
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<stroke android:width="1dip" android:color="#FBBB" />
<solid android:color="#6000"/>
</shape>.............................
The Notification API allows to set a drawable resource id for the icon of a notification. This drawable resource id is used to put the icon in the status bar and in the expanded window shade.This is a limitation if the icon images are to be represented by a Drawable or from a content provider at runtime. I propose that the Notification class adds fields (or methods) that would allow to set a Drawable or an Uri for the notification icon. This Drawable or Uri would then be used by the system notification service to put the icon in the status bar and in the expanded window shade.
View 2 Replies View RelatedI was trying to get hold of 2D graphics in Android.As a example i want to implement a custom drawable and show it in my Activity But when i run the app i see no rectangle on the activity, can anyone help me out? Where am i going wrong?
View 2 Replies View RelatedI need to use some inbuild drawable I found in
http://developer.android.com/reference/android/R.drawable.html
I set drawable @drawable/ic_input_add to a button in my layout xml file. The add icon appears on the button of layout editor. But there is a error of that xml file said that
Description Resource Path Location Type ERROR Error: No resource found that matches the given name (at 'drawableLeft' with value '@drawable/ic_input_add'). spend_list.xml / AccountBook/res/layout line 5 Android AAPT Problem. How to use a inbuild drawable?