Recent questions tagged Android

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android - Explain the difference between drawable, drawable-ldpi, drawable-mdpi and drawable-hdpi

I have a rough idea of what each of these directories are for, but I'm not really clear on the concept ... to the specific screens? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - How to highlight a button when is pressed?

I'm making an Andorid quiz and I want to highlight a button when it's clicked but when the user lets go of ... topRightRadius="6.5dp"/> </shape> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - Problems trying to create gradle build

We have recently migrated to Android Studio (from Intellij). I am currently trying to migrate our project to ... ideas would be appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - Override or disable settings menu

I'm making an application that should be used in a store that displays product information. I use an Android tablet ... only run in the stores. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - Why is LogCat showing all items as warnings (orange)?

Eclipse is acting strange. It shows every single log item as a warning (orange). Furthermore, each one's Time ... is also '?'. Screenshot below See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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442 views

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android - How to keep only one instance of a fragment, when switching with NavigationDrawer?

My App starts with a AddressFragment. From the NavigationDrawer I start (amongst others) a new AddressFragment with: ... , otherwise create one? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - proguard gradle debug build but not the tests

I enabled proguard for the debug build using: android { buildTypes { debug { runProguard true proguardFile 'proguard- ... not the test apk? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - How to handle FirebaseInstanceId.getInstance().getToken() = null

I have just migrated to FCM. I have added my class that extends from FirebaseInstanceIdService to receive a ... registration Id is received? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android studio java.lang.NoClassDefFoundError Gson

I've made pretty much a fresh project. I added in the gson library by google to my projects /libs directory and ... . What am I doing wrong? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - Upgraded to AppCompat v22.1.0 and now onKeyDown and onKeyUp are not triggered when menu key is pressed

I've just upgraded my app to use the newly released v22.1.0 AppCompat and now onKeyDown and onKeyUp are not triggered ... . How do I fix it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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375 views

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android - use camera without surfaceview or textureview

I have been trying to figure out if there is a way to use camera to take either video/pictures without defining ... in main layout xml file. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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306 views

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android get thumbnail of image stored on sdcard whose path is known

Say I have an image stores at path "/mnt/images/abc.jpg". How do I get the system generated thumbnail bitmap ... , but not from its file-path See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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184 views

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android - How to invoke the ActionBar's ContextMenu-like behavior?

In Android 3.0, when you select some text for example, the ActionBar switches to a ContextMenu-like mode, which ... t find this in the docs. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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425 views

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android - getting image width and height with picasso library

i'm using picasso library to download and load images into imageView. now i want to know how i can get ... image into one of the imageviews. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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165 views

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android - Sending Activity to background without finishing

How can I make an activity go to background without calling its finish() method and return to the Parent activity ... I would be very thankful. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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252 views

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android - How to disable AutoCompleteTextView's drop-down from showing up?

I use the following code to set text to an AutoCompleteTextView field. But I noticed that when I set certain text ... / doesn't help Thank you! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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231 views

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android - Recyclerview on Scrolling values changing from adapter

I am working on an app where I am trying to populate a list using RecyclerView and recycler adapter as well. But ... there a known fix for this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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368 views

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android - ERROR/Web Console: Uncaught TypeError: Cannot call method 'getItem' of null at http://m.youtube.com/:844

The following error comes from Android (WebView) and not directly from my own code: 04-28 12:36 ... WebSettings.setDomStorageEnabled(true) does. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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221 views

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android studio can't connect to debug devices

Android Studio can't connect to debug devices. When I click the debug button, the debug tab shows me Connecting to the ... long time. i use OS X See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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429 views

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android - How to Play audio through speaker even when headset is plugged in?

The title of the question might look repeated, but my problem is a sometimes problem and causes glitches. I ... speaker with headset plugged in. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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432 views

1 answer

android - how to make my viewpager swipe from right to left

I have a viewpager and it contains some information but it lets me swipe the pages from left to right how ... which means change its direction? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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447 views

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android - CoordinatorLayout and AppBarLayout elevation

I've created an AppBar layout like this <android.support.design.widget.AppBarLayout xmlns:app="http://schemas. ... show its shadow again? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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261 views

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android - Main difference between Manifest and Programmatic registering of BroadcastReceiver

I am trying to understand the main differences between registering a BroadcastReceiver in the Manifest and registering ... a broadcast thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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258 views

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android - Very simple code, but got error "Activity has been destroyed" when use Fragment

I made a very simple Activity which shows a simple ListFragment like below: My Activity: public class MyActivity ... " /> </LinearLayout> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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330 views

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android - FAB - square on pre Lollipop and without shadow on Lollipop

It looks like FloatingActionButton is not working ether on Android 4.0 and Lollipop. As you can see ... ="@drawable/abc_ic_clear_mtrl_alpha"/> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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185 views

1 answer

android - How to add "menu" indicator next to Action Bar's app icon?

At least Gmail and Youtube Android apps use a side menu (navigation drawer?) that opens by swiping, or ... () on the ActionBarDrawerToggle. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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184 views

1 answer

android - why is requestIdToken returning null?

I followed below steps as this link I downloaded google-services.json to my app folder. My project level ... Any help would be appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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216 views

1 answer

android - Opening a browser link through notification isn't working

My problem is the following: I'm posting a notification to the notifications bar, and i've put a URI ... greatly appreciated. Thanks, Rohan. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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