Recent questions tagged Android

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android - I write a file to Environment.DIRECTORY_DOWNLOADS, why can't I see it via the Downloads App?

I write (write, not download, to be precise it is the dump of a SQLite db of my App) a file on the ... shown in the Downloads App as well? 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 - Defining a RecyclerView's onCLickListener in an Activity

A RecyclerView is different from a ListView because it doesn't offer an onItemCLickListener class to handle click events ... 2." be implemented? See Question&Answers more detail:os...

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

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386 views

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android - Lost keystore file for app (but have Google Play App Signing enabled)

I have lost the original keystore file used to sign my app with. My app has Google Play App Signing enabled. ... if my assumption is correct. See Question&Answers more detail:os...

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

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803 views

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android - adb shell Logcat with Package Name

Is it possible to also display the Log's Package Name in each line? Using logcat -v long leaves exactly the ... wondering if it is possible. See Question&Answers more detail:os...

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

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344 views

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android - How to Programmatically Change TTS Default Engine

In addition to the Pico TTS engine that comes with Android, I have another TTS engine installed. I can change which ... would I go about 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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285 views

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android - the method getApplicationContext() is undefined

public void onProviderDisabled(String provider) { Toast.makeText(getApplicationContext(), "Gps Disabled", Toast. ... avoid this error 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

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android - How to fix flutter AndroidX incompatibility?

I just import webview_flutter plugin and found that the plugin has incompatible with my flutter environment. Then using ... 1 Exited (sigterm) See Question&Answers more detail:os...

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

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149 views

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android - Delete row in database table given one column value - which is a string

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

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403 views

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android - MediaPlayer stop playing after about 5 seconds

I'm currently developing a simple game and now it's time to add music and sound effect. I tried using ... . What is probable causing 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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508 views

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android - Sending JSON in POST request with Retrofit2

I'm using Retrofit to integrate my Web services and I do not understand how to send a JSON object to the server using ... : 42, "active": true } See Question&Answers more detail:os...

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

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141 views

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android - Activity in portrait or reverse portrait only

I want my activity to be available only in both portrait modes - portrait and reversePortrait. How can I achieve ... : API Level 11 and higher See Question&Answers more detail:os...

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

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886 views

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android - V/FA: Processing queued up service tasks: 1 followed by V/FA: Inactivity, disconnecting from AppMeasurementService

As it is visible in the console output below, the application usually needs 7-10 seconds to process the service and ... :firebase-ui:0.5.1' See Question&Answers more detail:os...

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

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140 views

1 answer

android - Adding rows into Cursor manually

I have an array of phone numbers and I want to get the corresponding contact names from the contacts ... ContactsContract.PhoneLookup.NUMBER }; See Question&Answers more detail:os...

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

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194 views

1 answer

android - How to change app default theme to a different app theme?

I have an Android app that has a default theme of Holo.Light but I want to change it to Theme.Black.I tried ... to take in changing the theme? See Question&Answers more detail:os...

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

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364 views

1 answer

android - Video is not showing on VideoView but I can hear its sound

On my button click I wrote the following code for playing video from my SDCARD (mp4). video_view = (VideoView) ... how can it solve 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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204 views

1 answer

android - Why does AndroidTestCase.getContext().getApplicationContext() return null?

UPDATE 2/13/2012: Accepted an answer, explained that this behavior is a bug, and noted that it appears to have ... maybe this is a good time. 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

1 answer

android - data in onActivityResult is null

I am trying do a simple application for Android. I have two Activities (A and B). In B I only want select a ... . How can i solve 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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266 views

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android - null keyevent and actionid = 0 in onEditorAction() (Jelly Bean / Nexus 7)

I have an edit text which functions as a search box in my application. In Jelly Bean on my Nexus 7 when I type ... ...Do some stuff(); } } 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

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android - ERROR No package identifier when getting value for resource number

Both activities are in the same package Second activity uses second layout file setContentView(R.layout.main2); Errors ... name=".ActivityTwo"/> See Question&Answers more detail:os...

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

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195 views

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android widget on click event

I have created widget in android and it successfully works, but now I want to use on click event of widget ... new activity from that. Help me See Question&Answers more detail:os...

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

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176 views

1 answer

android - Max thread number for one application?

I wanna know about max thread number for one application. You know Thread.activeCount() returns the number of ... response. 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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143 views

1 answer

android - Programmatically set google map fragment visibility (API2)

xml: <fragment xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/mapFragment" android ... do it like others fragment. 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

1 answer

android - Why to use strings.xml?

Could anyone please explain why having hard-coded strings is so bad? What issues should I expect if I ... such a time consuming activity. See Question&Answers more detail:os...

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

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707 views

1 answer

android - Could not identify launch Activity: Default Activity not found

I'm new to android and I have encounterded a problem. The console said that "Could not identify launch activity ... to use as launcher activity. See Question&Answers more detail:os...

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

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174 views

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android - Plural definition is ignored for zero quantity

I use plurals to compile a quantity string for an Android application. I follow exactly what one can find in ... way to force my definition? See Question&Answers more detail:os...

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

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254 views

1 answer

android - Remove the SearchIcon as hint in the searchView

I am doing an application where for example when i click on the image(it is a searchView) the search pad opens ! and ... type here..."); } } } See Question&Answers more detail:os...

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

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201 views

1 answer

android - onTabSelected Selected Not Called

I have just migrated my old ActionBar to new TabLayout ( Support Material Design ). Everything is ... tabLayout.setupWithViewPager(mViewPager); See Question&Answers more detail:os...

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

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217 views

1 answer

android - Shared Preferences - max length of a single value

I am storing String into shared preferences, but I wasn't able to find out maximal length of string I can store. Do you know this value? See Question&Answers more detail:os...

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

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