I would like to know how works a turn of Android device (from the point of view of the OS). I'm interested in this action, because my Android program can not save and RIGHT restore its state after any turn of device (I use it with OnSave... and OnRestore... methods), I've learned almost all tutorials, but in spite of that, I can't find the mistake. Thank you.
A very detailed information on this matter is located in Android documentation here.
You most likely need this section:
Retaining an Object During a Configuration Change
Related
I was working on a project in android studio and suddenly I found a man type logo
I hover my mouse on in for a second then it shows me
Current Inspection profile: Project default.
Click to configure highlightening for the file.
When i clicked on this button it shows me
Now I want to know what is the use of this option or is this is important or not?
It may can be stupid question but I asked this question just to increase my own knowledge becuse this option seems bit important
Thanks In advance!
Happy Coding!
This has little to do with code inspection, but one can only define what is being highlighted. One could call it the visual representation of the inspection results, as it clearly read "highlighting level". This option only is of use, when you have to work with an old crappy computer, but rather irrelevant on current hardware.
As the name suggest, it inspects your code for issues, errors, incompatibility etc. and may recommends better options. If your system is low on resources (RAM, Battery, CPU) you can select None and also you can choose the PowerSave mode.
I have to estimate the time it takes to update a specific application made for Android 4.4 to Android 10 and I need to see all the methods that are deprecated or not working. Is there any way to see the methods without going file by file? (I'm using Android Studio with Java)
When I build the application I only get one or two types of error at a time, when I correct them I get another one and so on.
Thanks and best regards.
P.S: How long does it take you to update something like that? I'm a junior and I'm a little lost doing this.
Here, go to Analyze -> Inspect code. After inspecting check maturity there you will have depreciated methods. (Don't forget to change minSdk)
After you will do that it give you method with a warning and you can filter it by having API not support warning
For every WiFiP2pDevice, there is an internal field called secondaryDeviceType. It's a string. I'm looking for a way to update it so that when other devices find the said device, they should be able to see the manually set value of secondaryDeviceType.
I've tried to do it with reflections and called wifiP2pDevice.update() but it didn't work. I couldn't see the change from other devices.
So, to answer this question for anyone in the future. It's just not possible. Turns out that the WiFi-Direct API for Android doesn't allow that level of flexibility.
I'm in an activity and I can't find a particular view. ie findViewById(R.layout.someId) is returning null. So I would just like to see for the current activity what the actual view hierarchy is at runtime. How can I do this?
This perfectly well-worded question has been down-voted for reasons I cannot understand.
And the perfectly straightforward answer:
Yes, you can use the SDK HierarchyViewer tool to see your whole layout tree at runtime
is hidden behind a youtube link that keeps getting poked into answers that say something else or comments to the original question.
Here's a link to the current documentation for HV:
https://developer.android.com/tools/debugging/debugging-ui.html
Note that the YouTube video says this can only be used with the app running in the emulator but the documentation says it will also work on "devices running a developer version of the Android system." I certainly don't run my own Android phone, which I use for most of my dev testing, with a dev version of the OS, so I think the YouTube video is effectively correct if not technically correct.
I believe findViewById requires a parameter of R.id.someid and it cannot take layouts. For a layout you must use setContentView(R.layout.someId);
http://www.youtube.com/watch?v=PAgE7saQUUY
I want to use a SlidingDrawer in an activity, and I would love to just use the built-in tray handle, rather than try to find or create my own. I found it online thanks to CommonsWare but I assume that they got it from the Android platform itself, so I figure it will benefit me in the long run to know where to find it, rather than just use their copy of it. I looked for it in my Android SDK installation, under platforms/android-8/android.jar/res/ but with no success.
Where can I find the above image, in the Android SDK itself, rather than just downloading it?
Look in the launcher app: ~\platform\packages\apps\Launcher\res\drawable\handle.xml
It uses all the drawables: tray_handle_normal, tray_handle_pressed, tray_handle_selected.
may be you can type android.R.drawable... in eclipse and let the intelli-sense display all the built in drawables.
but I think it's not there cause I searched for it and didn't find it too
thanks
Be carefull with using images that come with the system. Google itself states that they will not guarantee that these images will be included in the system in every release (the name may change). Also the design of your app will change if the user uses something like Blur or Sense that overrides a lot of the standard design items. If you use a copy of the drawable itself you now how your app will look and you can be sure that your app will keep working even if the manufacturer or Google changes the images that come with a device.