com.android.ide.common.process.ProcessException: Failed to execute aapt! What can I do?
just put this code inside build.gradle on the last part
android
Extending from two classes
You can only Extend a single class. And implement Interfaces from many sources. Extending multiple classes is not available. The only solution I can think of is not inheriting either class but instead having an internal variable of each class and doing more of a proxy by redirecting the requests to your object to the … Read more
Android auth firebase error: Local module descriptor class for com.google.firebase.auth not found
I’m trying to build an app with login/register capabilities through Firebase. I’m working on it with a partner (he’s on Linux, I’m on Mac), and he’s able to get the authentication working but for some reason I am not. We have all the same code, SDK tools checked in the SDK manager, running the same … Read more
How to pause / sleep thread or process in Android?
One solution to this problem is to use the Handler.postDelayed() method. Some Google training materials suggest the same solution. However, some have pointed out that the solution above causes a memory leak because it uses a non-static inner and anonymous class which implicitly holds a reference to its outer class, the activity. This is a … Read more
What is Dalvik and dalvik-cache?
Dalvik is the virtual machine that is used by Android. It is generally thought of as a Java virtual machine, although this is not precisely correct. It uses an object model that is identical to Java, and its memory model is also nearly equivalent. But the dalvik VM is a register based VM, as opposed … Read more
What is semi-join in database?
Simple example. Let’s select students with grades using left outer join: Now the same with left semi-join: The latter is much more efficient.
Android – Package Name convention
Android follows normal java package conventions plus here is an important snippet of text to read (this is important regarding the wide use of xml files while developing on android). The reason for having it in reverse order is to do with the layout on the storage media. If you consider each period (‘.’) in … Read more
How do we use runOnUiThread in Android?
Below is corrected Snippet of runThread Function.
“cannot resolve symbol R” in Android Studio
In every instance in all of my classes where I reference R.id.something, the R is in red and it says “cannot resolve symbol R”. Also every time there is R.layout.something it is underlined in red and says “cannot resolve method setContentView(?)”. The project always builds fine. It is annoying to see this all the time. … Read more
Variable is accessed within inner class. Needs to be declared final
If you don’t want to make it final, you can always just make it a global variable.