drawable

问题 W would like to have a drawable which has background and gradient on the left that is about 10dp wide. Image of what I would like to achieve: Red gradient on the left Background on the rest How I can achieve that? I've tried layer-list with two shapes but with no luck. Item background: <layer-list xmlns:android="http://schemas.android.com/apk/res/android" > <item android:drawable="@drawable/background" /> <item android:drawable="@drawable/gradient" /> </layer-list> Background drawable: <shape

问题 I'm trying to create an input stream by doing this InputStream is = (InputStream) getResources().openRawResource(R.drawable.image1); but I'm met with the error "Expected resource of type raw" with respect to my drawable file (R.drawable.image1). image1 is a png and in my res/drawable folder. Any ideas??? 回答1: @Broatian I don't currently have a res/raw folder. I found an alternative solution: is = context.getResources().openRawResource(+ R.drawable.image1); The + shows additional folders.

问题 Is it valid to use drawable-swdp- like drawable-sw720dp-xhdpi? Below is my scenario: My Acer iconia tab A501 (10") has a resolution of 1280x800 and density mdpi(160dp). It is expected to take the resource from drawable-sw720dp-mdpi. But the resource is being taken from drawable-sw720dp-xhdpi. I have following folders: drawable-sw720dp drawable-sw720dp-mdpi drawable-sw720dp-hdpi drawable-sw720dp-xhdpi is this the way this qualifier is to be used? or Is the density already considered while

问题 I am using attr to create a selector drawable for my project so that once i change theme colors, i dont have to make any change in the drawable file. I am using following libs: compile 'com.android.support:appcompat-v7:+' compile 'com.android.support:cardview-v7:+' compile 'com.android.support:design:22.2.0' Here is the source code for drawable: <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="?attr

问题 I have some clickable views and I want to set the default available background that is present on list click (in ICS is a blue color). I have tried putting as background this: android:background="@android:drawable/list_selector_background" but it is not the default blue I have by default (the one I used is orange). What is the drawable used by default on android as click selector? Thanks 回答1: It's list_selector_holo_dark or the equivalent holo light version; and these are the defaults in

问题 I have been searching on how to save file from Drawable into sd card OR phone's internal storage. All examples such as this one showed only for PNG type, I want to get GIF file from my drawable and save it into phone sd, and later remove it from sd after usage. Anybody please help with the code? I appreciate it! 回答1: As far as i know there isn't such a native function on Android (maybe related to patent issues). You may try this library for your purpose. Usually its meant to create animated

问题 So in API Level 11 Google introduced the ability to rotate an ImageView (Yay, after they introduced the possibility to Animate such a rotation, yay smart thinking, yay!) But how should I go about to rotate an ImageView using e.g. API level 8? I can't use setRotation() as described above. 回答1: RotationAnimation was present since Api level 1 RotateAnimation animation = new RotateAnimation(from, to, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f); animation.setInterpolator

问题 So in API Level 11 Google introduced the ability to rotate an ImageView (Yay, after they introduced the possibility to Animate such a rotation, yay smart thinking, yay!) But how should I go about to rotate an ImageView using e.g. API level 8? I can't use setRotation() as described above. 回答1: RotationAnimation was present since Api level 1 RotateAnimation animation = new RotateAnimation(from, to, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f); animation.setInterpolator

问题 I have full resolution images in drawable folder need to resize according to phone screen size how to do that ? 回答1: Do it like this /************************ Calculations for Image Sizing *********************************/ public Drawable ResizeImage (int imageID) { //Get device dimensions Display display = getWindowManager().getDefaultDisplay(); double deviceWidth = display.getWidth(); BitmapDrawable bd=(BitmapDrawable) this.getResources().getDrawable(imageID); double imageHeight = bd

问题 I need to change background of the activity dynamically , by selecting an image from an other activity. and passing the selected image back to the calling activity , but when i try to get the image , it is null. here is my code. public class SelectGoalBackground extends OrmLiteBaseActivity<DatabaseHelper> {// implements{ GridView gridview ; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.select_goal_background); final String from =