Recent questions tagged Android

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android - Detect if my accessibility service is enabled

I was wondering how could I detect if my own service is enabled. So I could check if my service is not enabled, then tell the user to enable 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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324 views

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android - onActivityResult do not fire if launch mode of activity is singleInstance

I have an Activity which is basically my main activity and its launch mode is single instance. But because of ... this callback is not working? See Question&Answers more detail:os...

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

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151 views

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android - How to use view flipper with three layouts?

I am currently using ViewFlipper for my main activity with two different layouts. I want to use a third ... a third layout using ViewFlipper? See Question&Answers more detail:os...

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

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408 views

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android - How can we handle different response type with Retrofit 2?

I have a webservice that returns either a list of serialized MyPOJO objects: [ { //JSON MyPOJO ... is created using GsonConverterFactory See Question&Answers more detail:os...

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

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566 views

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android - How to detect Bluetooth state change using a broadcast receiver?

I am trying to make an app that shows a toast when the device's Bluetooth turned on. I wanna do that ... do? Which permissions should I use? See Question&Answers more detail:os...

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

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444 views

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android - Push Listview when keyboard appears without adjustPan

I am trying to create an activity with a listview and a send message at bottom. The problem is that when ... myself, not really easy.. 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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239 views

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android - What is the use of List<NameValuePair> or ArrayList<NameValuePair>

I want to know about What is the use of List<NameValuePair> or ArrayList<NameValuePair> in android? Specially ... services using AsyncTask<...> See Question&Answers more detail:os...

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

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635 views

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android - Changing size of seekbar thumb

I'm using a drawable for seekbar thumb with android:thumb="@drawable/thumb" How can I set the size of this ... with 12dip height and width. See Question&Answers more detail:os...

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

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567 views

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android - How to change the border color(un-focused) of an EditText?

I changed the background color of the EditText to transperant. Now the EditText looks invisible when not focused. ... XML attribute 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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234 views

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android - java comparator, how to sort by integer?

Im trying to learn comparator in java and I have found this great example online, my question is how would this code be ... ) + ", "); } } See Question&Answers more detail:os...

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

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162 views

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android - Mediaplayer error (-19,0) after repeated plays

I have a game in which a sound plays when a level is completed. Everything works fine to start with but after ... how I can fix this problem? See Question&Answers more detail:os...

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

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170 views

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android - Fragment duplication on Fragment Transaction

Ok, whenever I try to replace a fragment in my application, it only adds the fragment inside of the container ... the original fragment is 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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307 views

1 answer

android - Why implement onDestroy() if it is not guaranteed to be called?

According to the android Activity Lifecycle, the only callback guaranteed to be called (if an activity ever leaves ... to implement onDestroy()? See Question&Answers more detail:os...

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

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291 views

1 answer

android - ScrollView doesn't scroll to the bottom

I have a certain problem in my Activity. The ScrollView doesn't scroll down to the bottom. I have a screenshot for ... > How can 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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209 views

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android - Define buildconfigfield for an specific flavor AND buildType

I have 2 flavors, lets say Vanilla and Chocolate. I also have Debug and Release build types, and I need Vanilla ... It is possible to do 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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154 views

1 answer

android - Show ImageView programmatically

How can I make an ImageView appear in the middle of the screen when the user clicks a button? I have placed ... (R.drawable.gameover)); 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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267 views

1 answer

android - How to fix getActionBar method may produce java.lang.NullPointerException

I am using a toolbar as my actionbar in an activity. I am trying to add the method getActionBar().setDisplayHomeAsUpEnabled( ... ); } }); } } See Question&Answers more detail:os...

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

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198 views

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android - Extract substring from a string

what is the best way to extract a substring from a string in android? See Question&Answers more detail:os...

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

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440 views

1 answer

android - Apostrophe not preceded by

I have a string defined in an android application: <string name="search_occurs">'{string}' occurs {times}</string> ... error. What am I missing? See Question&Answers more detail:os...

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

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360 views

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android - Expand and give focus to SearchView automatically

I'm developing an application where the user presses the "Search" icon in the ActionBar and a SearchView is made ... How should this be solved? See Question&Answers more detail:os...

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

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431 views

1 answer

android - Manually installing an updated APK fails with "signatures do not match the previously installed version"

I've built a silly app to share among a few friends. No need to put it up on the app-store. I built the ... Is there any way I can verify that? See Question&Answers more detail:os...

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

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426 views

1 answer

android - Scroll to top in RecyclerView with LinearLayoutManager

I have a fragment in which there is RecyclerView with LinearLayoutManager in which there are CardView items. There is a floating ... (); } }); } See Question&Answers more detail:os...

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

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287 views

1 answer

android - Animating and rotating an image in a Surface View

I would like to animate movement on a SurfaceView . Ideally I would like to also be notified once the animation had ... (ie. a walk cycle) See Question&Answers more detail:os...

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

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956 views

1 answer

android - Different tab width for TabLayout

I'm using TabLayout & ViewPager. I am trying to change the size of the Tab, like Whatsapp (camera icon). ... (equal across all tabs). 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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186 views

1 answer

android - How to set foreground attribute to other non FrameLayout view

I would like to know how to apply or emulate foreground effect in a view different from FrameLayout, as ... RelativeLayout> Thanks in advance!! See Question&Answers more detail:os...

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

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251 views

1 answer

android - Do not change TextInputLayout background on error

I would like to have an EditText with the background as a "normal" EditText but with the error handling of a ... is set to a TextView/EditText? See Question&Answers more detail:os...

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

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169 views

1 answer

android - Placing ViewPager as a row in ListView

I try to use ViewPager as a row ins ListView but a get a bizarre behaviuor - Only the first row works, but when ... { return mHabits.size(); } } See Question&Answers more detail:os...

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

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196 views

1 answer

android - Getting mobile data usage history using NetworkStatsManager

I want to know the data usage history and noticed the "new" android-6 NetworkStatsManager which seems positive (I've ... how do I do just that? See Question&Answers more detail:os...

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

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