android-drawable

问题 Background I know it's possible to create a rotated version of a Drawable (or Bitmap), as such (written about it here) : @JvmStatic fun getRotateDrawable(d: Drawable, angle: Int): Drawable { if (angle % 360 == 0) return d return object : LayerDrawable(arrayOf(d)) { override fun draw(canvas: Canvas) { canvas.save() canvas.rotate(angle.toFloat(), (d.bounds.width() / 2).toFloat(), (d.bounds.height() / 2).toFloat()) super.draw(canvas) canvas.restore() } } } The problem I wanted to have

问题 I have a custom progress bar that looks like this: Here's the .xml code I've used to create it: background_drawable.xml <?xml version="1.0" encoding="UTF-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:innerRadius="@dimen/progress_bar_radial_inner_radius" android:thickness="@dimen/progress_bar_radial_thickness" android:shape="ring" android:useLevel="false" > <solid android:color="@color/main_color_alpha"/> </shape> progress_drawable.xml <?xml version="1.0"

问题 in android i have read a few articles on how drawables share a constant state. so if you make a change to a drawable it affects all the same bitmaps. for example lets say you had a list of star drawables. changing the alpha on one will change all the star drawables alpha. but you can use mutate to get your own copy of a drawable with no shared state. The article i was reading is here Now onto my question: What is the difference between the following two calls in android: Drawable clone =

问题 I have found this question and the solution was this code : <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" > <solid android:color="#ffffff" /> <corners android:bottomLeftRadius="8dp" android:bottomRightRadius="8dp" android:topLeftRadius="8dp" android:topRightRadius="8dp" /> </shape> This code doesn't work on my PC (no rounded corners). And you ? There has been changes ? EDIT 1: I have an error when I build the project : AAPT: error: XML or text

问题 I have found this question and the solution was this code : <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" > <solid android:color="#ffffff" /> <corners android:bottomLeftRadius="8dp" android:bottomRightRadius="8dp" android:topLeftRadius="8dp" android:topRightRadius="8dp" /> </shape> This code doesn't work on my PC (no rounded corners). And you ? There has been changes ? EDIT 1: I have an error when I build the project : AAPT: error: XML or text

问题 I'm setting android:drawable of a RadioButton programatically like this: Drawable unchecked = getResources().getDrawable(R.drawable.ic_room_car); Drawable d= getResources().getDrawable(R.drawable.ic_room_car); Shape circle = ?????; ??? checked = combine circle and d SateListDrawable states= new StateListDrawable(); states.addState(new int[] {android.R.attr.state_checked}, checked); states.addState(new int[] {}, unchecked); ((RadioButton)findViewById(R.id.icon_1)).setButtonDrawable(states);

问题 Somehow I have Drawable image from Drawable folder like as Drawable thumb = mContext.getResources().getDrawable(R.drawable.image_name); i try like this String image_name =thumb.getCurrent().toString(); But my need image name that means image_name from thumb; How it is possible? Any suggestion, comment, consults; provide useful links are highly appreciate. Advance Thanks 回答1: You can try like this: int imageid = getResources().getIdentifier("image_name", "drawable", getPackageName()); String

问题 Somehow I have Drawable image from Drawable folder like as Drawable thumb = mContext.getResources().getDrawable(R.drawable.image_name); i try like this String image_name =thumb.getCurrent().toString(); But my need image name that means image_name from thumb; How it is possible? Any suggestion, comment, consults; provide useful links are highly appreciate. Advance Thanks 回答1: You can try like this: int imageid = getResources().getIdentifier("image_name", "drawable", getPackageName()); String

问题 I have an android application, In which home page comprises of 8 ImageViews, they act as menu options for users, So where should I put the multi-density images for these ImageViews in custom drawable folders(ldpi,mdpi,hdpi,xhdpi,xxhdpi,xxxhpi) or drawableV21 or drawableV24 ? 回答1: It changes due to your need. For images you can design it for the highest resolution and put it in xxxhpi folder. Android will automatically downscale of resolution for other devices. Also you can put different

问题 I have an android application, In which home page comprises of 8 ImageViews, they act as menu options for users, So where should I put the multi-density images for these ImageViews in custom drawable folders(ldpi,mdpi,hdpi,xhdpi,xxhdpi,xxxhpi) or drawableV21 or drawableV24 ? 回答1: It changes due to your need. For images you can design it for the highest resolution and put it in xxxhpi folder. Android will automatically downscale of resolution for other devices. Also you can put different