imageview

问题 I'm trying to return the width and height of my ImageView but keep being returned 0. I'm calling ImageView.getWidth() and ImageView.getHeight() in OnCreate() and I believe the ImageView hasn't had enough time to initialize, thus the error I'm getting: java.lang.IllegalArgumentException: width and height must be > 0 My question is: Where is a good place to retrieve the width and height of my ImageView so I know it has enough time to be initialized properly? Note: I've tried

问题 Currently I'm developing a game. This is the details of my game: User should choose the correct image object. I want the images to accelerate from left to right. and when they reach the end, they should re-appear on the activity again. This is the screenshot of what I'm working on: I have 5 imageviews and they should accelerate. Do you have sample code for this type of animation? Any help is truly appreciated. Thanks in advance! EDIT: Tried doing this: <?xml version="1.0" encoding="utf-8"?>

问题 Currently I'm developing a game. This is the details of my game: User should choose the correct image object. I want the images to accelerate from left to right. and when they reach the end, they should re-appear on the activity again. This is the screenshot of what I'm working on: I have 5 imageviews and they should accelerate. Do you have sample code for this type of animation? Any help is truly appreciated. Thanks in advance! EDIT: Tried doing this: <?xml version="1.0" encoding="utf-8"?>

问题 I tried almost all methods possible to set image to a image-view from stored file path. None of them work. The images were selected from gallery in other activity and imagepath stored into database. Images are of type .jpg .jpeg .png Image paths stored in database with paths without any extensions eg. /external/storage/media/carimagename when I try to set image to imageview using this code there is no error but image is not set. for(int i=0;i<n;i++) { Bitmap pic = BitmapFactory.decodeFile

问题 I have an imageView with a set image in xml. However when I try to change the image the ImageView never displays the second image. Instead it displays a blank screen. I have tried the code with and without invalidate() and there is no change. ImageView image; String imgPath=Environment.getExternalStorageDirectory()+"/Music/Evanescence - Discography - 1998-2011 (320 kbps)/Album's/2000 Origin (Limited Edition) (320 kbps)/Scans covers/06.jpg"; @Override protected void onCreate(Bundle

问题 In my activity I have an ImageView. I want ,when user click on it, a dialog opens (like intent dialogs) that show list of apps which can open image than user can choose a app and show the image with that app. my activity code : @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ImageView iv = (ImageView) findViewById(R.id.imageid); iv.setImageResource(R.drawable.dish); iv.setOnClickListener(new View.OnClickListener

问题 Im working on changing the image being shown when I have my ImageView Clicked. Im trying to use a similar code that I used for accomplishing this with a TextView but I can't seem to find the right terms to get it to work. Here is my current code. Thanks electronconfiguration.setOnClickListener(new View.OnClickListener() { public void onClick(View drawable) { if (drawable.equals(R.drawable.element_el)) electronconfiguration.setImageDrawable(R.drawable.aluminum_el); else if (drawable.equals(R

问题 I am getting a imagefile from Parse, basically user's profile image. But now I am having trouble to display this in the NavDrawer, reason being that it is not a imageview and I am getting is a Image, Here is my Mainactivity.xml public class MainActivity extends AppCompatActivity { private Toolbar mToolbar; private RecyclerView mRecyclerView; private RecyclerView.LayoutManager mLayoutManager; private DrawerLayout Drawer; private RecyclerView.Adapter mAdapter; private ActionBarDrawerToggle

问题 My android app takes some time to initialize, and I'd like to show a splash image before the loading screen appears and hide it afterwards. I searched through stackoverflow and found some solutions. I tried to follow this tutorial, that explains how to implement a proper splash screen that starts within a splash activity, but it didn't solve my problem, because there was still a several seconds black screen between the splash screen and the loading screen (which renders from a separate thread

问题 I have this CustomAdapter, to fill a list with my data. The problem is that the Imageview is downloaded and drawed a lot of times. Example: I search to my server a list of videos: (Video1) Title 1 Description 1 (Video2) Title 2 Description 2 (Video3) Title 3 Description 3 .. When this loads, the image from the Video1 loads, then on the same Imageview, the Video2Image load, and again for each video on the list, same times how videos are on the list. When I scroll the adapter, this download all