android-custom-view

问题 I created a table view in list view adapter programmatically. For that first i created a Adapter layout as : <?xml version="1.0" encoding="utf-8"?> <TableLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@android:color/black" android:stretchColumns="*" android:id="@+id/tablelayout" > </ableLayout> Then what I have done in the adapter is: public class DemoAdapter extends ArrayAdapter

问题 I want to make an app which shows cardio graph in real time. That means i want to measure heart bit and want to show the bit rate in graph in my application. But i wondering to draw the cardio graph. I have gone through many sample graph codes but dint get any clue to draw cardio graph. Is there any clue from any body? 回答1: For this specific application, you may want to draw the graph "by hand" using Path and a SurfaceView. Get a Paint instance ready during initialization: Paint paint = new

问题 I want to have a simple gauge view where i will define the start value and the end value and have a pointer to show given variable value. So i can show a given value like speedmeter. For example if my the value of a textView is 1300, then next to the textview i want to have this custom meter view animation like this! It is possible? Any existing example code? 回答1: Another one i found at Evelina Vrabie's blog, used it and worked perfect! Look at Evelina Vrabie's GitHub. It has a gauge library

问题 I am looking for a CalendarView that can be used in a dialog something like this: I plan to use android.widget.CalendarView but it is available from API level 11. That's an issue considering there are still lot of users, using android 2.3.3 (but not a major one can let go those set of user). Which of these options should I use? 1) libraries that are available and use them accordingly. 2) customize the android.widget.CalendarView ? If #2, then are there any examples for it? 回答1: Hi visit all

问题 I'm writing a few custom views which share some same-named attributes. In their respective <declare-styleable> section in attrs.xml I'd like to use the same names for attributes: <?xml version="1.0" encoding="utf-8"?> <resources> <declare-styleable name="MyView1"> <attr name="myattr1" format="string" /> <attr name="myattr2" format="dimension" /> ... </declare-styleable> <declare-styleable name="MyView2"> <attr name="myattr1" format="string" /> <attr name="myattr2" format="dimension" /> ... <

问题 I am trying to make a custom view and have declared the styled attributes like the below:- <resources> <declare-styleable name="NewCircleView"> <attr name="radius" format="integer"/> <attr name="circlecolor" format="color"/> </declare-styleable> </resources> in the constructor of the customview , these values are obtained like below:- circleradius=a.getInt(R.styleable.NewCircleView_radius, 0);//global var circlecolor=a.getColor(R.styleable.NewCircleView_circlecolor, 0);//global var and a is

问题 I want to implement a List layout similar to Google Play which have menu for every individual Row. Please help me to create this. Do I need to create a Popup Menu or there is any option available to achieve this. Thanks 回答1: Looks like you are trying to do exactly the way in the image shown. I am just giving an example of how I am trying to achieve this. Here's how I am doing this. Not very difficult. Just straight implementation of Popup Menu. Step 1 : My Adapter public class ListAdapter

问题 I want to implement a List layout similar to Google Play which have menu for every individual Row. Please help me to create this. Do I need to create a Popup Menu or there is any option available to achieve this. Thanks 回答1: Looks like you are trying to do exactly the way in the image shown. I am just giving an example of how I am trying to achieve this. Here's how I am doing this. Not very difficult. Just straight implementation of Popup Menu. Step 1 : My Adapter public class ListAdapter

问题 I need to build my own custom TextView so I have been learning about StaticLayout to draw text on a canvas. This is preferable to using Canvas.drawText() directly, or so the documentation says. However, the documentation doesn't give any examples for how do it. There is only a vague reference to StaticLayout.Builder being the newer way to do it. I found an example here but it seems a little dated. I finally worked though how to do it so I am adding my explanation below. 回答1: StaticLayout

问题 I have a FragmentActivity which shows a Fragment by defualt. The fragment consists of an EditText , a TextView and a Custom DropDown, made by extending AutoCompleteTextView . If my custom AutoCompleteTextView is focused or the drop down list is open and I change the orientation of the device. I get following exception: Failed Looking up window java.lang.IllegalArgumentException: Requested window null does not exist It works if the custom AutoCompleteTextView is not in focused state. I've