android-ui

问题 I am having problem differentiating layout folders for samsung galaxy s4 and samsung galaxy s3. I have tried layout-sw360dp, layout-sw360dp-xxhdpi, layout-sw360dp-xhdpi etc. All the time galaxy s4 and galaxy s3 both picks from layout-sw360dp-xhdpi. So what should be the correct layout folder for both of these devices ? 回答1: I am using some specific resolution values in my projects in order to differentiate these from other layouts and screens. You can create layouts with exact minimum height

问题 How I can make my ImageButton change its color when I click it? I want to do something like this : Button(Blue) -> Click -> Button(Red) -> Click -> Button(Blue) -> Click -> Button(Red) when I click it switch color and when I click again it goes back to original. I've tried to do like this: mTrashFlag = !mTrashFlag; ImageButton bt = (ImageButton)findViewById(R.id.trash_button); if(!mTrashFlag) { bt.setBackgroundColor(0x4CB8FB); } else { bt.setBackgroundColor(0xff0000); } but it didnt work. It

问题 I read article (Android Developers) on 9patch PNG in Android. But I'm not getting what is the real use of it ? If i use Gradient Image then it is going to behave same as 9Patch PNG. I had discussion with my graphics designer, he was telling me that it is same as Image Repeat used in CSS. Is it so ? -Thanks 回答1: No it's not the same. Think about a button you want to give a new look. With the 9patch way you simply design your button's design in a image editing program like e.g. Photoshop and

问题 I've implemented a DrawerLayout with this tutorial and everything works fine. @Override public boolean onPrepareOptionsMenu(Menu menu) { // if nav drawer is opened, hide the action items boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList); menu.findItem(R.id.action_settings).setVisible(!drawerOpen); return super.onPrepareOptionsMenu(menu); } onPrepareOptionsMenu simply toggles the menu visibility in one shot. But I'd like to slowly animate the alpha value of my menu items as the

问题 I am using Eclipse IDE. Here is my code for uiautomator testcase: public class caltest extends UiAutomatorTestCase { public void testDemo() throws UiObjectNotFoundException, IOException { //mytesstcode } } To run this test i have to issue following commands from command line: /tools/android create uitest-project -n -t 1 -p Go to the project directory where your build.xml file is located and build your test JAR. ---> ant build Deploy your generated test JAR file to the test device by using the

问题 I know that the UI elements (View hierarchy) may only be manipulated from the UI thread. For a background operation, the AsyncTask can be used, which offers event handlers to reach the UI thread. To be brief, is it allowed to instantiate a View (tied to getApplicationContext() ) in a non-UI thread? This custom View descendant -- once instantiated -- is added to the view hierarchy from the UI thread . So only the constructor call is done inside an Asynctask.doInBackground() ; it's attaching (

问题 I am building an Android application, in which i've a spinner item. The spinner entry is a category, and there are sub category in each category. I want to implement a UI, such that, when i click a spinner entry, i must get another spinner, showing the sub-categories for that category. (Something like how Windows Program menu works). Here's and image of what it must look like - Consider the drop down as a spinner. I figured out these many ways - Implementing Spinner of Spinners. Populating

问题 Can somebody please help me out in designing vertical tabs like in the given pic(taken from hello sms app) I'm not asking for a code snippet , so please don't ditch this question as a homework type. What I would want to know is the approach that I should take. Do I have extend the stock TabLayout or an existing tablayout with a few styles and UI customizations? Your pointers to the right resource would be of great help. Thanks 回答1: you can achieve this using multipane layout in android. on

问题 I'm trying to create a custom EditText that has both rounded corners and an inner shadow. I made a layer list that creates the inner shadow, <layer-list xmlns:android="http://schemas.android.com/apk/res/android"> <item > <shape android:shape="rectangle"> <solid android:color="#6C6C6C" /> </shape> </item> <item> <shape android:shape="rectangle"> <solid android:color="@color/ashes" /> </shape> </item> <!-- White Top color --> <item android:top="3px" android:left="3px"> <shape android:shape=

问题 I am in an app which requires stackview. But I have to implement horizontal swiping to switch between stackview items and UI looks as that of as normal one. Please help me to make it. I have already checked this link. But in it UI is just a cover flow. I want to make the UI look same as stackview. 回答1: iam create a custom stack-view public class custom_stackview extends StackView{ float x1, x2, y1, y2, dx, dy; public custom_stackview(Context context, AttributeSet attrs) { super(context, attrs