I had one problem when migrated to ADT-22. I’ve renamed “lib” dir to “libs” and project compiled. And when I run project on Android device the “java.lang.VerifyError” error crashes my app. In the LogCat I saw that some of classes were rejected by Verifier: “Verifier rejected class …..” And I Read more…
As you can see there existing setAlpha() method in API-11. Using this method you can change Alpha for View. What we gonna do in API-10 and lower to change View Alpha? I’ve got one solution. The solution is AlphaAnimation Please take a look my code: package com.hrupin.samples.alpha; import com.hrupin.samples.halfopacitywidgets.R; import Read more…
Today I want to change default Android SDK path in Android Studio. To change default path to Android SDK you need do the next steps. I describe it via screenshots. 1. Open Android Studio. 2. Configure Android Studio. 3. Click Project Defaults. 4. Cofigure Android SDK path. Click to enlarge. Read more…
Recent I’ve this bug on my project. This bug comes when app awake from sleep. I’ve spent a lot of time to fix it. And finally I got the solution. My project is Activity with Fragments. The error text is: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3113) Read more…
I had this problem when updated to ADT-22 on Eclipse. To fix it you need download NEW additional component from google. This is “Android SDK Build-tools”. Open Your SDK Manager and download it. Restart Eclipse
As you can see in my previous post about ListView filtering in Android (How to create filter for ListView items in Android.) creating a filter is pretty simple if you’re have a list with Strings. Here I show you how to create a filter for your custom adapter with complex Read more…
This functionality is very needed if you have a lot of items and you need to delete one of them. For example: deleting one ATM from ATM’s overlay if user made some action on map. It can be implemented by creating remove(int) method in your ItemizedOverlay class. Here is MyItemizedOverlay Read more…
Please. have a look at screenshot. Here I want to show you how to create filter for ListView items. In this post my ListView contains simple strings. As you see there the EditText on the screen. User can type text in this EditText and ListView will filter using user’s text Read more…
Here is tutorial How to create custon groupIndicator for ExpandableListView in Andriod. Here is screenshot: To do it you need: 1. Create 9-patch images for normal and expanded state 2. Create selector with this 9-patch images <selector xmlns:android=”http://schemas.android.com/apk/res/android”> <item android:state_expanded=”true” android:drawable=”@drawable/group_indicator_expanded” /> <item android:drawable=”@drawable/group_indicator” /> </selector> 3. Set this selector Read more…
Here I want to share you a simple code. If you need to get sound effect for button click or some other event in your Android application you find what you need. Below you can download source code of this sample Android project Android SDK provide SoundPool class for it. Read more…