Develop Reference

Adding Dynamically ImageViews to horizontal scrollview in android

I'm trying to show images dynamically by string as ID and want to display it in Horizontal scroll-view as i have 13 cards which can't be fit on screen
Here is my code its working fine but i want it in Horizontal Scroll View
int resID = getResources().getIdentifier(resourceName, "id", getPackageName());
ImageView im = (ImageView) findViewById(resID);
Context context = im.getContext();
int id = context.getResources().getIdentifier(resourceName, "drawable", context.getPackageName());
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(im.getLayoutParams());
lp.setMargins(counter * 43, 0, 0, 0);//left,right,top,bottom
im.setLayoutParams(lp);
im.setImageResource(id);
im.setOnClickListener(this);
counter++;
}
mp = MediaPlayer.create(getApplicationContext(), R.raw.clicksound);
}![enter image description here][2]

As per your requirement I will suggest you to RecyclerView which comes with library which you will have to add and use RecyclerView with horizontal orientation refer to link below.
https://developer.android.com/training/material/lists-cards.html
Or you can do it dynamically as below
here what you can do add Linear horizontal layout inside scrollview say id is imgcontainer then you can do is
create image view dynamically and add to linear layout.
for(int i=0;i<10;i++)
{
//create imageview here and setbg
ImageView imageView = new ImageView(this);
imageView.setImageResource(R.drawable.ic_launcher);
((LinearLayout) findViewById(R.id.imgcontainer)).addView(
imageView, i);
}

int[] image_array = new int[]{R.drawable.image1, R.drawable.image2, ... R.drawable.image10};
LinearLayout ll = (LinearLayout) findViewById (R.id.ll_images);
for (int i=0 ; i<10; i++){
ImageView img = new ImageView (this);
img .setBackgroundResource (image_array [i]);
ll .addView(img );
}

Change property of multiple image button

My activity has 9 image buttons, I would like to change certain properties of multiple image buttons like disable all the image buttons in a certain situation & then enable them back. I think may be i can use loop something like this....
// int [] ids = { R.id.imgBtn1, R.id.imgBtn2......, R.id.imgBtn9 };
// for (int i=0; i<=ids.length; i++){
// ids[i].setEnabled(true);
// }
Thank you all

define one list like follow:
List<ImageView> images = new ArrayList<>();
ImageView iv1 = (ImageView)findViewById(R.id.image1);
ImageView iv2 = (ImageView)findViewById(R.id.image2);
ImageView iv3 = (ImageView)findViewById(R.id.image3);
ImageView iv4 = (ImageView)findViewById(R.id.image4);
ImageView iv5 = (ImageView)findViewById(R.id.image5);
ImageView iv6 = (ImageView)findViewById(R.id.image6);
ImageView iv7 = (ImageView)findViewById(R.id.image7);
//.....
and put all in one list,
images.add(iv1);
images.add(iv2);
// add other view
then work with this list and do what you want like:
for (ImageView iv : images)
{
// your code
}

// Add views from array of ids
ArrayList<View> views = new ArrayList<>();
int [] ids = { R.id.imgBtn1, R.id.imgBtn2, R.id.imgBtn9 };
for (int i=0; i<ids.length; ++i){
views.add(findViewById(ids[i]));
}
// Loop each view and enable it
for (View view : views) {
view.setEnabled(true);
}

Android passing R.layout.extra_layout to View.inflate dynamically

I'm trying to programmatically pass the id of a layout.xml file to the View.inflate method but am not sure how I could go about that. I have a test bit of code that I'm tring to get working and, as you'll see I've tried passing this in as a String but that doesn't work.
Any ideas? My thanks.
LinearLayout main = (LinearLayout) findViewById(R.id.mainLayout);
for (int i = 0; i < 3; i++) {
String boxToInflate="R.layout.box"+Integer.toString(i);
LinearLayout ll = (LinearLayout) View.inflate(MainActivity.this, boxToInflate, null);
main.addView(ll);
}
Edit: A few minutes later.
I think I may be making some progress with this test code:
// Get outer relative layout
LinearLayout main = (LinearLayout) findViewById(R.id.mainLayout);
for (int i = 0; i < 3; i++) {
// String boxToInflate="R.layout.box"+Integer.toString(i);
int resID = getResources().getIdentifier("box" + i, "id",
getPackageName());
LinearLayout ll = (LinearLayout) View.inflate(MainActivity.this,
resID, null);
main.addView(ll);
}

int layoutId = getResources().getIdentifier("box"+i, "layout", getPackageName());
It also works for other things like drawables ("drawable" instead of "layout"), etc. Just replace the second parameter.
EDIT : Saw your edit, just replace "id" with "layout" and you're good.

Add images to a HorizontalScrollView

I want to create a HorizontalScrollView which reads the images from drawable folder. The name of the images are "image1" "image2" ... "image20". I don´t know how I can use the numbers to read them. Here is what I have:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
LinearLayout sv = (LinearLayout) findViewById (R.id.images);
for (int i=1 ; i<20; i++){
ImageView iv = new ImageView (this);
iv.setBackgroundResource (R.drawable.image1);
sv.addView(iv);
}
}

You can do that in two ways.
First one is to create array with the id's of images you want to use and in your for cycle, just add the images to your layout:
int[] images = new int[]{R.drawable.image1, R.drawable.image2, ... R.drawable.image20};
LinearLayout sv = (LinearLayout) findViewById (R.id.images);
for (int i=0 ; i<20; i++){
ImageView iv = new ImageView (this);
iv.setBackgroundResource (images[i]);
sv.addView(iv);
}
Or the second way, you can create something similar to this:
for (int i=1 ; i<=20; i++){
String uri = "drawable/image"+i;
// int imageResource = R.drawable.image1;
int imageResource = getResources().getIdentifier(uri, null, getPackageName());
ImageView iv = new ImageView (this);
iv.setBackgroundResource (imageResource);
sv.addView(iv);
}
I didn't tested the codes, but I think they should work.

If you wish to use drawables without an array list, you can do this:
getResources().getIdentifier("Name of the Drawable", "drawable", "Your Package Name");
So your code will be:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
LinearLayout sv = (LinearLayout) findViewById (R.id.images);
for (int i=1 ; i<20; i++){
ImageView iv = new ImageView (this);
int myImage = getResources().getIdentifier("image"+i, "drawable", "Your Package Name");
iv.setBackgroundResource(myImage);
sv.addView(iv);
}
}

A lot of examples like this show building a list of your images first. And then you can use your code and iterate through the list.
So something like
List<Drawable> imagesToAdd = Arrays.asList(R.drawable.image1,R.drawable.image2, .... R.drawable.image20);
Then you can even use the foreach loop to iterate through this.
for (Drawable image in imageToAdd) {
etc...
}

android- Placing two programatically created imageView next to each other in a RelativeLayout

I have created two imageViews promatically as shown below:
public void createImageViews(Integer count){
ImageView[] imageViewArray = new ImageView[count];
for (int i = 0; i < count; i++ ) {
imageViewArray[i] = new ImageView(getBaseContext());
imageViewArray[i].setId(i); // unique property for every imageView
if(i==0){
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,RelativeLayout.LayoutParams.WRAP_CONTENT);
params.addRule(RelativeLayout.ALIGN_PARENT_TOP);
params.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
imageViewArray[i].setLayoutParams(params);
imageViewArray[i].setBackgroundResource(imagesForIv[i]);
_UIRLParent.addView(imageViewArray[i]);
Log.v("first", "first"+i);
}
else if(i < 3){
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
params.addRule(RelativeLayout.RIGHT_OF,imageViewArray[i].getId());
imageViewArray[i].setBackgroundResource(imagesForIv[i]);
_UIRLParent.addView(imageViewArray[i],params);
Log.v("second", "second"+i);
}
}
I just need to place the second imageView toRightOf first imageView. Can someone help me. This is eating away a lot of my time.

try https://stackoverflow.com/a/5191159/1436931
you are using wrong index values.
at line
params.addRule(RelativeLayout.RIGHT_OF,imageViewArray[i].getId());
you aligning current image RIGHT of current image. :)
you need to track the index of last imageView id i.e left Image view
you need something like this
params.addRule(RelativeLayout.RIGHT_OF,imageViewArray[i-1].getId());