android-custom-view

问题 I want to test my Custom component UI rendering performance. I used the following test case to check the rendering performance. private long getLayoutTime(int layoutRes) { final Context targetContext = getInstrumentation().getTargetContext(); final LayoutInflater layoutInflater = LayoutInflater.from(targetContext); final long startTime = System.currentTimeMillis(); for (int i = 0; i < 1000; i++) { final View view = layoutInflater.inflate(layoutRes, null); view.setLayoutParams(new ViewGroup

问题 I want to show my custom notification by support both small and large layout as screenshots above when user collapse or expand the notification. But the result it shows expanded notification by default. I want to show it as collapsed notification by default and only show expanded notification when user expand it. Please check my code bellow: private fun initCustomNotification() { // Get the layouts to use in the custom notification val notificationLayout = RemoteViews(packageName, R.layout

问题 I have to build a more complex custom view in Android. The final layout should look like this: <RelativeLayout> <SomeView /> <SomeOtherView /> <!-- maybe more layout stuff here later --> <LinearLayout> <!-- the children --> </LinearLayout> </RelativeLayout> However, in the XML files I just want do define this (without defining SomeView, SomeOtherView etc.): <MyCustomView> <!-- the children --> </MyCustomView> Is this possible in Android, and if yes: What would be the cleanest way to do it?

问题 Questions Q1 : Has anyone managed to get custom string/enum attribute working in xml selectors? I got a boolean attribute working by following [1], but not a string attribute. EDIT: Thanks for answers. Currently android supports only boolean selectors. See accepted answer for the reason. I'm planning to implement a little complex custom button, whose appearance depends on two variables. Other will be a boolean attribute (true or false) and another category-like attribute (has many different

问题 Questions Q1 : Has anyone managed to get custom string/enum attribute working in xml selectors? I got a boolean attribute working by following [1], but not a string attribute. EDIT: Thanks for answers. Currently android supports only boolean selectors. See accepted answer for the reason. I'm planning to implement a little complex custom button, whose appearance depends on two variables. Other will be a boolean attribute (true or false) and another category-like attribute (has many different

问题 I need to have a view which contains textview and edittext. Example: Yay! you made it to ______ We should hang out! feel ____ to follow me. Above "_____" could be of any length and it should feel like a paragraph in the end. Rest of the text given above is not changeable. Just like fill in the blanks. 回答1: From my perspective, a fill-in-the-blank widget should do the following: Allow only certain identified portions of the text to be changed. The rest of the text is locked. Not allow cursor

问题 I need to have a view which contains textview and edittext. Example: Yay! you made it to ______ We should hang out! feel ____ to follow me. Above "_____" could be of any length and it should feel like a paragraph in the end. Rest of the text given above is not changeable. Just like fill in the blanks. 回答1: From my perspective, a fill-in-the-blank widget should do the following: Allow only certain identified portions of the text to be changed. The rest of the text is locked. Not allow cursor

问题 I have been using data binding for the past few weeks and now am trying to use a two way data binding for a custom view with a 'value' attribute. My problem is that I get the following error when building. Cannot find a getter for <com.twisthenry8gmail.dragline.DraglineView app:value> that accepts parameter type 'long' Now it was my understanding that the binding library will automatically use my public setters and getters however the most confusing part is adding a redundant inverse binding

问题 I'm trying to make a custom WebView that is completely identical to a regular WebView except that it has rounded corners. The rounded corners need to be transparent because I'd like to put this WebView in a Dialog. I tried making my custom class like so: public class RoundedWebView extends WebView { private Context context; private int width; private int height; public RoundedWebView(Context context) { super(context); initialize(context); } public RoundedWebView(Context context, AttributeSet

问题 I'm trying to make a custom WebView that is completely identical to a regular WebView except that it has rounded corners. The rounded corners need to be transparent because I'd like to put this WebView in a Dialog. I tried making my custom class like so: public class RoundedWebView extends WebView { private Context context; private int width; private int height; public RoundedWebView(Context context) { super(context); initialize(context); } public RoundedWebView(Context context, AttributeSet