Please forgive me if this is a duplicate post but I tried and could not find anything on this subject.
I have a blank ImageView in a layout and now I want to put an image there dynamically. Since there is
TextView txt = (TextView) findViewById(R.id.textView1);
txt.setText("my text");
is there a way to do it for an ImageView like the way you would do it for a TextView?
ie...
ImageView image = (ImageView) v.findViewById(R.id.pPicture);
image.setImage(R.drawable.myImage); // I know this isn't correct.
Any help is much appreciated.
Try this
image.setImageResource(R.drawable.yourimage);
or
image.setImageDrawable(getResources().getDrawable(R.drawable.yourimage);
image.setImageResource(int resId)
If you want to display an image file on the phone, you can do this:
private ImageView imgView;
imgView = (ImageView) findViewById(R.id.imageViewId);
imgView.setImageBitmap(BitmapFactory.decodeFile("pathToImageFile"));
If you want to display an image from your drawable resources, do this:
private ImageView imgView;
imgView = (ImageView) findViewById(R.id.imageViewId);
imgView.setImageResource(R.drawable.imageFileId);
To avoid every problem you can use the sure way
Resources res = getActivity().getResources();
Drawable drawable= res.getDrawable(R.drawable.myImage);
image.setImageDrawable(drawable);
Related
So i have this program which create my list of cards which are relative layouts and they look like this.
Here is the code of it creation. Ps its in a for loop
LayoutInflater mInflater = (LayoutInflater) atv.getSystemService(atv.LAYOUT_INFLATER_SERVICE);
LinearLayout relativeLayoutz = (LinearLayout) mInflater.inflate(R.layout.rtl_enterprise, parent);
RelativeLayout rl = (RelativeLayout) relativeLayoutz.findViewById(R.id.rl_empresa);
rl.setId(i);
ImageView img = (ImageView) rl.getChildAt(0);
//
//Performance bottleneck needs fixing/ not loading all images and overloading thread
//
//loadImageByUrl(atv, enterprises.getEnterprises().get(k).getPhoto().toString(), img);
TextView txt = (TextView) rl.getChildAt(1);
txt.setText(enterprises.getEnterprises().get(i).getEnterpriseName());
TextView txt2 = (TextView) rl.getChildAt(2);
txt2.setText(enterprises.getEnterprises().get(i).getEnterpriseType().getEnterpriseTypeName());
TextView txt3 = (TextView) rl.getChildAt(3);
txt3.setText(enterprises.getEnterprises().get(i).getCountry());
LinearLayout relativeLayout = (LinearLayout) mInflater.inflate(R.layout.rtl_enterprise, parent);
relativeLayout.setId(i);
everything there works kinda ok, but i have a problem, i need to create a
onClick listener
Why?
I would call a method which needs some info about the card that has been clicked, and then redirect to a new activity which contains the info about the card that he clicked.
But i would need that onclick listener for each of these relative layouts, and i assume it would need to be initialized when the card is created since it create + 50 cards, but i have no idea of how to setup each listener.
Why do you create it like that?
a better solution to use RecyclerView.
and in the adapter, you can listen for the item click. write the code one time and when any item clicked. you will know the position of the clicked item.
see this tutorial
https://developer.android.com/guide/topics/ui/layout/recyclerview
https://www.androidhive.info/2016/01/android-working-with-recycler-view/
how to convert an image from drawable file to an Image view
because this won't work
ImageView image= R.drawable.pic;
Try this
ImageView imageview = findViewById(R.id.imageView);
imageview.setImageDrawable(ContextCompat.getDrawable(this, R.drawable.pic));
Try this
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
fab.setImageDrawable(getResources().getDrawable(R.drawable.pic,this.getTheme()));
}else {
fab.setImageDrawable(getResources().getDrawable(R.drawable.pic));
Try this
ImageView image = new ImageView(this);
image.setImageResource(R.drawable.pic);
or
ImageView image = new ImageView(this);
image.setImageDrawable(getResources().getDrawable(R.drawable.pic));
So I have two objects on my activity, a TextView, and a Button. I did change the font of both of these using a font style from my assets folder. The project would load fine no problems. However now all of a sudden changing the TextView font makes the game crash and not load. I can't understand what could have caused this and how to solve it other than maybe using a button to display text, which is in practical.
My java code:
public class Main_Menu extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main__menu);
Button n=(Button) findViewById(R.id.start_button);
Typeface typeface = Typeface.createFromAsset(getAssets(), "Stencil WW.ttf");
n.setText("Start");
n.setTypeface(typeface);
Typeface typeface2 = Typeface.createFromAsset(getAssets(), "Stencil WW.ttf");
TextView title = (TextView) findViewById(R.id.title);
title.setTypeface(typeface2);
//sets screen orientation on created
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
MediaPlayer mMediaPlayer = new MediaPlayer();
mMediaPlayer = MediaPlayer.create(this, R.raw.sound1);
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mMediaPlayer.setLooping(true);
mMediaPlayer.start();
}
}
I did use the typeface to change both texts fonts but I tried just making it again with typeface2 and it still crashes. Not sure if I need to show any other part of my project but will if you wish to see it. Thank you for the help.
It seems like you forgot "setText" to the title
I need to convert TextView into ImageView so I will be able to save the ImageView as an image in the sd card.
How do I convert TextView into ImageView?
Thanks.
(I saw the other questions but them are not realy answer my question).
Yes there is a way to do this, by two ways.
You can create an Bitmap of any View using buildDrawingCache() and getDrawingCache()
TextView tv = (TextView)findViewById(R.id.textview);
tv.buildDrawingCache();
ImageView img = (ImageView)findViewById(R.id.imageview);
img.setImageBitmap(tv.getDrawingCache());
You can also check this answer for further reference.
In the other way , you can take your whole rootview as a screen shot and you can save it into disc.
This will help to achieve the above How to programatically take a screenshot on Android?
public static Bitmap convertViewToBitmap(View view)
{
view.measure(
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED)
);
view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
view.buildDrawingCache();
Bitmap bitmap = view.getDrawingCache();
return bitmap;
}
There very well may be a duplicate question, but I have yet to find it. I am doing thing all programmatically, not using the xml. Basically what I am trying to do is to have an EditText appear below an image. I am using RelativeLayout with an ImageView and and EditText.
These are the parameters that I am setting up for the ImageView and EditText:
RelativeLayout.LayoutParams editTextParams = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
editTextParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
editTextParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
editTextParams.width=500;
RelativeLayout.LayoutParams imageParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
imageParams.addRule(RelativeLayout.ALIGN_PARENT_TOP);
imageParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
imageParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
imageParams.addRule(RelativeLayout.ABOVE, editText.getId());
Which I have verified correctly places the EditText in the bottom right corner and the image above. What I run into is if the picture it "too tall" then it covers the EditText. I also tried using
imageView.setScaleType(ImageView.ScaleType.FIT_XY);
and it stretches it over the EditText as well.
The full code that I am using is this
RelativeLayout layout = (RelativeLayout) findViewById(R.id.mainLayout);
ImageView imageView = new ImageView(this);
EditText editText = new EditText(this);
RelativeLayout.LayoutParams editTextParams = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
editTextParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
editTextParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
editTextParams.width=500;
RelativeLayout.LayoutParams imageParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
imageParams.addRule(RelativeLayout.ALIGN_PARENT_TOP);
imageParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
imageParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
imageParams.addRule(RelativeLayout.ABOVE, editText.getId());
imageView.setLayoutParams(imageParams);
imageView.setScaleType(ImageView.ScaleType.FIT_XY);
editText.setLayoutParams(editTextParams);
Bitmap image = getImage();
imageView.setImageBitmap(image);
layout.addView(editText);
layout.addView(imageView);
Thanks. Any suggestions would be greatly appreciated.
Create a LinearLayout and then add the two components in it (ImageVIew and EditText)
Here is what you should do;
Set the orientation to vertical for the horizontal layout and width to whatever you need
Set the with of both components to 0 and weights to 1 each
After that, you should have the two items one above the other;
I hope this helps
One thing you can do is fix the imageview width and height. This way you can control the maximum size without the imaging going over the edit text.
RelativeLayout.LayoutParams imageParams = new RelativeLayout.LayoutParams(256, 256);
Hopefully this helps.
Your editText has a vertical MATCH_PARENT. Shouldn't it be WRAP_CONTENT?
(I am not sure if this helps, but it might help, as the MATCH_PARENT contradicts your planned layout, and your screenshot indicates that the editText is vertically centered.)