I want to create a dynamic decodeResource to use very images in the object.
This is my code:
for(int i=42; i<55; i++) {
bitmap = BitmapFactory.decodeResource(context.getResources(),
Integer.parseInt("R.drawable.a"+i));
}
I want to get the files
R.drawable.a43 to a54
Its possible to create a loop for decodeResource?
To retrieve the resource ID for 'R.drawable.a##' dynamically we can use Resources.getIdentifier as follows:
final String pkg = context.getPackageName();
final Resources resources = context.getResources();
...
int num = ...; /* between 43 and 54 */
final int id = resources.getIdentifier("a" + num, "drawable", pkg);
You can store these in a List using a loop much like the one you have now, only with slightly modified bounds:
final String pkg = context.getPackageName();
final Resources resources = context.getResources();
final List<Bitmap> bitmaps = new ArrayList<Bitmap>();
for (int i = 43; i <= 54; ++i) {
/* decode bitmap with id R.drawable.a{i} */
final Bitmap bitmap = BitmapFactory.decodeResource(resources,
resources.getIdentifier("a" + i, "drawable", pkg));
bitmaps.add(bitmap);
}
/* now bitmaps contains the Bitmaps */
Related
I have an image(.jpg) available in my drawable folder. I need the Image.getPlanes() information of it for my image classification project. So how do we read that image and get the getPlanes information out of it?
Existing Code:
private byte[][] yuvBytes;
final Plane[] planes = **image**.getPlanes(); // How to create this image object?
fillBytes(planes, yuvBytes);
/* */
protected void fillBytes(final Plane[] planes, final byte[][] yuvBytes) {
for (int i = 0; i < planes.length; ++i) {
final ByteBuffer buffer = planes[i].getBuffer();
if (yuvBytes[i] == null) {
yuvBytes[i] = new byte[buffer.capacity()];
}
buffer.get(yuvBytes[i]);
}
}
Need an Image object, that reads the image present in the Drawable folder.
I have an array which contains several drawables needed by my main java code I use this to call them when needed:
mImagesArray = new int[]{R.drawable.img_0, R.drawable.img_1, R.drawable.img_2,...,R.drawable.img_m}
this direct implementation method works but imagine if i have an array containing +100 images, I would call each drawable value from img_1 to the final img_100 which is pretty frustrating.
What I need is a function which use an increment int i value that is defined by (for i=0;i<m;i++) so this function would look much simpler than the previous one that I used.. something like mImagesArray = new int[]{R.drawable.img_i} maybe ?
I hope you understood my question, basically I want an all-set function which requires only mImagesArray's number of elements..
edit ** mImagesArray is used in:
private void drawImage(Canvas canvas) {
//Get the image and resize it
Bitmap image = BitmapFactory.decodeResource(getResources(),
mImagesArray_ar[mImagesArrayIndex]);
//Draw background
// customWallpaperHelper.setBackground(canvas);
//Scale the canvas
PointF mScale = customWallpaperHelper.getCanvasScale(mImageScale, image.getWidth(), image.getHeight());
canvas.scale(mScale.x, mScale.y);
//Draw the image on screen
Point mPos = customWallpaperHelper.getImagePos(mScale, image.getWidth(), image.getHeight());
canvas.drawBitmap(image, mPos.x, mPos.y, null);
}
THANKS.
Add this method to your code:
protected final static int getResourceID
(final String resName, final String resType, final Context ctx)
{
final int ResourceID =
ctx.getResources().getIdentifier(resName, resType,
ctx.getApplicationInfo().packageName);
if (ResourceID == 0)
{
throw new IllegalArgumentException
(
"No resource string found with name " + resName
);
}
else
{
return ResourceID;
}
}
And use it like this:
int myID =
getResourceID("your_resource_name", "drawable", getApplicationContext());
Note: no path nor extension, in case of images.
You can even not use the mImagesArray array: just use int myID = getResourceID("img_" + i, "drawable", getApplicationContext());, where i is an integer (the same integer you would use as your array index).
Like this:
Bitmap image =
BitmapFactory.decodeResource(getResources(),
getResourceID("img_" + mImagesArrayIndex, "drawable", getApplicationContext()));
I would rather suggest you to just create a string array with all the drawable names and then extract the drawable from the names.
I mean to say similar to this:-
String[] drawables=new String[100]
for(int i=0;i<100;i++)
drawables[i]="img"+i;
Then finally when you want it you get by name like this:-
int drawableResourceId = this.getResources().getIdentifier(drawables[i], "drawable", this.getPackageName());
Had the same problem.
int x,i=0;
While(i<100){
ImageView view = new ImageView(this);
name="img_"+i;
x=getResources().getIdentifier(name, "drawable, getPackageName());
view.setImageResurse(x);
mainActivity.addView(view);
i++;
}
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*Update - solved**
What I was looking for was how to get the Resource ID. It's difficult to formulate a question when you don't know what you don't know, but the two guys that answered it within a matter of minutes seemed to understand. Thanks, guys.
Here is the code I was finally able to use without having to load all 32 bitmaps while using a String to identify which specific one I was after.
StartCalc session = new StartCalc(context);
int findDate = session.findDate();
for (int i = 0; i < daysTil.length; i++) {
String numbers = "numbers" + i;
int resId = getResources().getIdentifier(numbers, "drawable", getPackageName());
if (i == findDate) {
ivNumbers.setImageBitmap(BitmapFactory.decodeResource(getResources(), resId));
}
}
*Original question**
I'm trying to use a for loop to fill an array of Bitmaps, from 0 to 32, but I can't figure out how to use the String "numbers" (identified on line 3) to populate the address required by the BitmapFactory (referenced on line 5). Here's the code of me filling the array two ways. The long way has issues taking up too much memory, and since I only need one of these images based on the date, I'm hoping there's a way to do this.
private void setNumbers() {
for (int i = 0; i < 33; i++) {
String numbers = "R.drawable.numbers" + i;
Log.e(TAG, numbers);
daysTil[i] = BitmapFactory.decodeResource(getResources(), numbers);
}
daysTil[0] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers0);
daysTil[1] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers1);
daysTil[2] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers2);
daysTil[3] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers3);
daysTil[4] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers4);
daysTil[5] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers5);
daysTil[6] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers6);
daysTil[7] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers7);
daysTil[8] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers8);
daysTil[9] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers9);
daysTil[10] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers10);
daysTil[11] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers11);
daysTil[12] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers12);
daysTil[13] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers13);
daysTil[14] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers14);
daysTil[15] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers15);
daysTil[16] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers16);
daysTil[17] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers17);
daysTil[18] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers18);
daysTil[19] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers19);
daysTil[20] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers20);
daysTil[21] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers21);
daysTil[22] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers22);
daysTil[23] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers23);
daysTil[24] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers24);
daysTil[25] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers25);
daysTil[26] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers26);
daysTil[27] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers27);
daysTil[28] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers28);
daysTil[29] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers29);
daysTil[30] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers30);
daysTil[31] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers31);
daysTil[32] = BitmapFactory.decodeResource(getResources(), R.drawable.numbers32);
}
You should use this method to find the resource id of the drawable:
String numbers = "numbers" + i;
int resId = getResources().getIdentifier(numbers, "drawable", getPackageName());
Reference: getIdentifier
The Resources class has this method:
public int getIdentifier (String name, String defType, String defPackage)
So the complete statement could look somewhat like this:
for (int i = 0; i < 33; i++) {
String numbers = "R.drawable.numbers" + i;
Log.e(TAG, numbers);
Resources resources = <context>.getResources();
daysTil[i] = BitmapFactory.decodeResource(getResources(),
resources.getIdentifier ("numbers" +i, "drawable",
<context>.getPackageName());
}
(note: this code is untested - it's just for demonstration)
Must be a way looping through this code:
private void loadSprites() {
this.sprites[0] = BitmapFactory.decodeResource(getResources(), R.drawable.ic_boom01);
this.sprites[1] = BitmapFactory.decodeResource(getResources(), R.drawable.ic_boom02);
this.sprites[2] = BitmapFactory.decodeResource(getResources(), R.drawable.ic_boom03);
this.sprites[3] = BitmapFactory.decodeResource(getResources(), R.drawable.ic_boom04);
this.sprites[4] = BitmapFactory.decodeResource(getResources(), R.drawable.ic_boom05);
this.sprites[5] = BitmapFactory.decodeResource(getResources(), R.drawable.ic_boom06);
this.sprites[6] = BitmapFactory.decodeResource(getResources(), R.drawable.ic_boom07);
}
Thanks!
If I am understand your question, you want something like,
int[] drawables = {R.drawable.ic_boom01,R.drawable.ic_boom02,R.drawable.ic_boom03,R.drawable.ic_boom04,R.drawable.ic_boom05,R.drawable.ic_boom06,R.drawable.ic_boom07}
private void loadSprites() {
for(int i=0; i<this.sprites.length; i++)
this.sprites[i] = BitmapFactory.decodeResource(getResources(), drawables[i]);
}
You should place your images in the assets folder. From their you can access them via their file name. See http://developer.android.com/reference/android/content/res/AssetManager.html.
Please look at below code for that.
First make int array
int[] mImgArray = { R.drawable.ic_boom01, R.drawable.ic_boom02,
R.drawable.ic_boom03, R.drawable.ic_boom04, R.drawable.ic_boom05,
R.drawable.ic_boom06, R.drawable.ic_boom07 };
or Set this Image to ImageView using below code
mImgView1.setImageResource(mImgArray[0]);
And you can convert this image directly to bitmap and store into bitmap array using below code.
Bitmap mBmpArray=new Bitmap[mImgArray.length];
for(int i=0; i<mImgArray.length; i++)
mBmpArray[i] = BitmapFactory.decodeResource(getResources(), mImgArray[i]);
}
This works for me
//Bitmap of images for fly asset
private Bitmap fly[] = new Bitmap[8];
//Initialize array of images
for(int i = 0; i < fly.length; i++){
this.fly[i] = BitmapFactory.decodeResource( getResources(), getResources().getIdentifier("fly_frame" + i, "drawable", context.getPackageName() ) );
}
You can do that in a simple for loop.. and start from the first id and increment it by 1 at each loop.. though I don't recommend you to do this..
I need to add an image into "item". item is an xml file with TextView...
item = new ArrayList<String>();
item.add("an image");
Try this code
ArrayList<Bitmap> mBit = new ArrayList<Bitmap>(9);
for (int i = 0; i < 9; i++)
{
mBit.add(Bitmap.createBitmap(bitmapOrg, (i % 3) * newWidth, (i / 3) * newHeight, newWidth, newHeight));
}
Collections.shuffle(mBit);
for (int i = 0; i < 10; i++)
{
Bitmap bitmap = mBit.get(i));
//Do something here
}
You should create an ArrayList of objects and you can put everything you want in it and manipulate like this :
ArrayList<Object> array = new ArrayList<Object>();
array.put(0,"A string");
array.put(1,yourbitmap);
String string = (String) array.get(0);
Bitmap bitmap = (Bitmap) array.get(1);
You must cast when you get get because it is an object array.
If by image, you mean an image File and not Image object. Then use
add(fileObject.toString())
and while retrieving recreate File object using that object String.
new File(array.get(0)).getPath()