imageview

问题 Background I have a ViewPager (of images pages), which needs to show its content inside an image that should keep its aspect ratio. The problem Problem is, when I just set a 9-patch for any kind of ViewGroup (including the ViewPager), the image just stretches (not keeping the aspect-ratio), and for some reason, it doesn't even respect the content bounding box I've set to it (in the 9-patch). It occurs even if I put the ViewPager in a FrameLayout that has the 9-patch background instead. What I

问题 I am generating pie chart on image view, I want to send it via email. How to convert image view's image to email attachment, as its not available in resources? 回答1: Call getDrawingCache() on your image view. This returns the cache bitmap of the view. Read documentation here. Save the bitmap as PNG, create a mail and attach and send. Bitmap bmp = imgView.getDrawingCache(); FileOutputStream fos = openFileOutput(FILENAME, Context.MODE_WORLD_READABLE); bmp.compress(Bitmap.CompressFormat.PNG, 0,

问题 When I trying to render a bitmap in imageview mImageView.setImageBitmap(mBitmap); I would see Bitmap too large to be uploaded into a texture in log. Ok, I know there is limit on OpenGl that would throw this warning message. But can I know whether the image is rendered success or not? 回答1: You should check maximum texture size by getting value of GL_MAX_TEXTURE_SIZE environment value. You can review this value for various Android devices on site of GLBEnchmark: http://www.glbenchmark.com

问题 i have 2 image views , the first imageview have bitmap with 600 px size second image view have 1024 px bitmap , and i am scaling rotating and moving first image view with matrix , once the user hit a button second image view should have the same size scale and rotation, but because the second imageview have a bigger bitmap i cannot just use imageview2.setimagematrix(ImageView1Matrix) it gives different results, is there anyway i can apply same operations(resize,rotate , translate) on the

问题 I'm trying to fake some kind of progress bar. I have X images and want an ImageView to show them with a certain delay. I've tried to do something like this: for(i=2;i<X;i++) { Handler handler = new Handler(); handler.postDelayed(new Runnable() { @Override public void run() { drawable = getResources().getDrawable(getResources() .getIdentifier("img_"+i, "drawable", getPackageName())); imgPayment.setImageDrawable(drawable); }}, DELAY); } But the for loop doesn't wait for the run() to end. I just

问题 I Want to know how do we handle click on Imageview on a Custom Listview with Image and Textview. I Even made Imageview Clickable. Here is my code for CustomAdapter.java public class CustomAdapter extends ArrayAdapter<RowItem> { Context mcontext; ArrayList<RowItem> rowItem = new ArrayList<RowItem>(); private RowItem row; RowItem data; public CustomAdapter(Context context, int resourceId, ArrayList<RowItem> items) { super(context, resourceId, items); this.mcontext = context; this.rowItem =items

问题 I want to compare current imageView with image from R.drawable. I guess I tried everything but I can't solve this one. I tried everything form stack overflow. XML: <ImageView android:layout_width="match_parent" android:src="@drawable/red" android:id="@+id/imageview1" android:clickable="true" android:layout_height="match_parent" /> Android: final ImageView test = (ImageView) findViewById(R.id.imageview1); test.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v

问题 Hello Im using a function for fit to screen on this topic Android image view matrix scale + translate float imageWidth = imageDetail.getDrawable().getIntrinsicWidth(); float imageHeight = imageDetail.getDrawable().getIntrinsicHeight(); RectF drawableRect = new RectF(0, 0, imageWidth, imageHeight); RectF viewRect = new RectF(0, 0, imageDetail.getWidth(), imageDetail.getHeight()); matrix.setRectToRect(drawableRect, viewRect, Matrix.ScaleToFit.CENTER); imageDetail.setImageMatrix(matrix);

问题 So I'm working on making a design for my app and I need to put a imagebutton directly below an imageview. But since my imageview has a border around it with a drop shadow I need to hide (shift up) maybe 10 pixels of my imagebutton behind my imageview. Here is a quick drawing of what I want. I hope that makes sense. I've been messing around with all kinds of different arrangements but I cant get what I want. Any help would be greatly appreciated. 回答1: First of all use a RelativeLayout . Add

问题 I'm working on animating an ImageView in Android (API 19), using ObjectAnimator . I've got everything working well, and it displays perfectly on a Galaxy S3, but on my Nexus 7 (2013 WiFi model) it's causing issues. The goal is to have an image do a full 360° rotation around its Y-axis using rotateY . However, on the Nexus 7, between 75° and 105°, the image disappears. My drawable was created from a PNG, and the relevant code is below. View: <ImageView android:id="@+id/login_logo" android