Recent questions tagged Android

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android - How to start an activity in background and show it afterwards?

I've two activities, one is the SplashActivity and the other is MainActivity, an activity containing a webview. ... the splash time expires. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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374 views

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android - repo init a particular commit

Im building the Cyanogenmod 9 (Android ICS) system for a Nexus S phone (samsung crespo). The problem is that ... a branch. Thanks in Advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android java opencv 2.4 convexhull convexdefect

Open-CV 2.4 Android-Java: i have searched for contours (list of MatofPoint) like this: Imgproc.findContours(roi_mat, contours ... 0,0, 255), 1); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - Ellipsize only a section in a TextView

I was wondering if it is possible to abbreviate only a portion of a string in a TextView. What I would like ... way of doing this? Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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899 views

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android - Prevent Swiping of ViewPager2 when onTouch of inner view

I have a ViewPager2 with a fragment inside, in the fragment, I have a custom view with certain touch logic ... still swipes to other pages. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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470 views

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android - Invisible SurfaceView for Camera Preview

I need to get camera preview data only, but not visible preview. Since I'm doing all this in a service, I had ... like to do it a bit better. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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537 views

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android - Recycleview scroll to a position not working inside Nestedscrollview

I have implemented a recycleview inside a nested scroll view. But recycle view scroll to position ... ).startSmoothScroll(smoothScroller); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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334 views

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android - "AndroidManifest.xml does not declare a Java package" error

This may be more of a Linux bug than a programming error, but I am not sure. The AndroidManifest.xml is somewhat ... ="1" /> </manifest> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - Why it is preferred to use GCM for push notifications?

I know, it's so. But I don't understand, why? Why not simply send queries to server periodically? Sure, ... anyone give me a clear explanation? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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636 views

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android - How to keep expanded SearchView on the right side of ActionBar (while using custom icon)?

My question is closely related to SearchView wrong alignment and SearchView positions when expanded in ActionBar but the ... ="19" /> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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549 views

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android - when i change the orientation from portrait to landscape my calculated result is disappearing. how to resolve it?

Hai, in my calculator app when i click on calculate button result is appearing normally, but when i ... calculated result is disappearing. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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594 views

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android - How to enable screen overlay permission by default

How can I enable screen overlay permission by default while install application. Now I facing some problem, when ... interaction. do needfull... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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334 views

1 answer

android - How to display a button in random screen position

How do I display a button in a random screen position in android? For example I have a button that is named GO. ... position. How can I do that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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546 views

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android onCreateOptionsMenu called twice when restoring state

Here's a simple android app I've created to demonstrate my problem: public class OptionMenuTest extends Activity { ... wrong. Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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302 views

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android - Can we still remove never-published apps from Google Play?

We develop and publish our own apps as well as apps for others to publish on Google Play. Back when Google ... want to allow such broad access. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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444 views

1 answer

android - Reference different assets based on build flavor

I am able to get the correct api_key.txt on debug builds because that is a buildType. However I am unable ... is greatly appreciated, thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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352 views

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android - How to turn on bluetooth on button click

In my application, I need to turn on bluetooth of my device on a button click. How can I achieve that? An ... in my mainfest.xml for the same? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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628 views

1 answer

android - Get maximum HorizontalScrollView scroll amount

I'm adding floating arrows to my HorizontalScrollView which will let the user know that there are more item's outside ... the Max in this case) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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584 views

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android - Implement Broadcast receiver inside a Service

I want to check Internet connection throughout the run time of my Android application. I tried using services ... use broadcast receivers alone? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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478 views

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android - How to migrate flutter project to androidx

How to migrate existing flutter project to Android X ? Are there any pro and cons? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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371 views

1 answer

android - Setting typeface of hint in TextEdit

Is it possible to set typeface of hint element of EditText view without changing the typeface of the EditText itself? Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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790 views

1 answer

android - How is the Firebase Remote Config rate limit counted?

I am using Firebase Remote Config to store a secret key for a mobile app ( I do not want to include in ... how is the limit counted? Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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679 views

1 answer

android - What path does "getApplicationContext().getFilesDir()" return?

I'm doing a simple app in Android and in a certain part of the app I would like to create an Excel file and ... me please? Thanks in advance :) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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404 views

1 answer

android - Lost messages over XMPP on device disconnected

I'm trying to develop a turn base game over XMPP. ( The only solution I found for multiplatform game ). I can ... but they didn't asnwer me... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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545 views

1 answer

android - findViewById returning null in fragment

I am replacing the existing fragment with new fragment and i am able to see my view but while setting on ... Thanks in advance for your help See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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340 views

1 answer

android - ActionBarSherlock + Maps + Loaders = java.lang.NoClassDefFoundError

Edit: For a detailed how-to, check out my answer. I'm struggling with it for two ... working in my MapCapableSherlockEnabledFragmentActivity? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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827 views

1 answer

android - notifyDataSetChanged not working

My app uses a MultiColumnListView (https://github.com/huewu/PinterestLikeAdapterView) and as its name says it helps creating ... } }); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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654 views

1 answer

android - Attempt to invoke virtual method com.google.firebase.iid.FirebaseInstanceId.getInstanceId()' on a null object reference

I am to using firebase-messaging library and trying to fetch the token using below method on app launch. ... What could be the problem? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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