Recent questions tagged Android

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android - How can I clean my react-native project to back it up?

I'm developing a mobile app using React-Native, and as I'm the only developer of it, I don't want to use ... if I want to make regular backups? 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 - Picasso Load Image into Target

I'm using Picasso to download various images. Usually, I just display these in an ImageView but in this situation ... here? Thanks for any 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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344 views

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android - Should I be using something other than getResource().getStringArray() to populate a large array?

Following the Android sample for populating a ListView, I query an array from my strings.xml using Activity. ... missing something obvious here. 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 - FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS excludes whole application, not only the Activity

I have a Notification which starts an Activity. After a long press on home button and selecting my app, I ... the main Activity started? Regards 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 - How does quantized density affect image resource selection and scaling?

Each Android device has a physical pixel density and a 'quantized density'. Sources state that the quantized density ... scaled to what size? See Question&Answers more detail:os...

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

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327 views

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android - Animate ActionBarDrawerToggle icon programmatically

I want to animate the drawer icon from a burger to an arrow and vice versa manually, not only ... .ActionBarDrawerToggle which would helpful. See Question&Answers more detail:os...

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

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266 views

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android - java events,handlers and listeners question

Edit: I was actually able to get this to work and form, in my oppinion, a good example. The accepted answer is ... need more info let me know. See Question&Answers more detail:os...

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

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300 views

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android - Most efficient way for Dynamic Text Color Change in TextView

I want to change color of parts of a text several times with a timer. Simplest way is this: SpannableStringBuilder ... and won't change never. See Question&Answers more detail:os...

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

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368 views

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android - Using a WiFi without Internet Connection

In my app I am connecting to a device that has it's own WiFi network. In android 6 and above the ... to disable his Cellular data. 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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525 views

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android - How can I extrapolate farther along a road?

Given realtime location data of a moving device over a short period of time, how can I get a lat/long pair ... will be in an Android app. See Question&Answers more detail:os...

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

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439 views

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android - How to improve the performance of ViewFlipper/ViewAnimator

I'm using a ViewAnimator (parent class of ViewFlipper) to make some kind of interactive book. The hierarchy is ... stuck... can you 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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289 views

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android - How can I return data from a RecyclerView adapter?

I have a RecyclerView in which in each object of the RecyclerView I have a checkbox. Each time one of the ... set it? 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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272 views

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android - Showing a list of files in a ListView

I'm wondering how to show files from a directory in a ListView`. The files can be listed with: File dir ... get the usage of the ArrayAdapter. See Question&Answers more detail:os...

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

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346 views

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android - Picasso first run not call onBitmapLoaded in for loop

I have problem with get bitmap use Picasso in for loop. it is not called onBitmapLoaded in first run. second run ... imageview. Thank you. :D See Question&Answers more detail:os...

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

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301 views

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android - App is incompatible with all devices after publishing to the Market but same was working when moved directly to the device

I have developed an app using PhoneGap and tested the same in different version of emulator and also in my Motorola ... . 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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628 views

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android - AlarmManager not working in sleep mode

I have set an AlarmManagr with a repeat time. Here is my method by which I am setting it: public void ... manager running even in sleep mode? See Question&Answers more detail:os...

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

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301 views

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android connect to internet event

Is there a event which tells me that the device has connected to INTERNET (3G or wifi)? I need to start some ... to support Android 2.1. 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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315 views

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android - Nearby Connections 2.0: Both sides request connections, but don't successfully connect

I'm trying to use the new Android Nearby Connections v2.0 API with the P2P_CLUSTER connection strategy. The ... after a bunch of errors. See Question&Answers more detail:os...

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

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253 views

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android - Align-Center SlidingTabLayout

After I moved my app to 5.0, I had to move from the basic tabs to the slidingTabLayout that a google ... /LinearLayout> Thank you very much ! See Question&Answers more detail:os...

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

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311 views

1 answer

android - OnTouch in MapView only fires the first time

I'm trying to implement a double-tap zoom like function in my MapView. The event always fires the first ... not in my previous implementation. See Question&Answers more detail:os...

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

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337 views

1 answer

android - Want to display a dialog only once after the app been installed

How can I make my dialog appear only once after my Android app is installed on the device? See Question&Answers more detail:os...

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

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276 views

1 answer

android - Validation on Edit Text

I would like to know how to make a validation on EditText. For example, I have one EditText that should only ... please include a code snippet. See Question&Answers more detail:os...

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

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350 views

1 answer

android - How to restart the onCreate function

I have an application and there are certain conditions when I want my activity to be recreated or the ... some suggestions. Thanks alot See Question&Answers more detail:os...

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

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266 views

1 answer

android - How to show&handle contact details intents of apps?

Background Not sure how it's called, but when you open the contact-details screen of the contacts app, you see ... screen of the contacts app ? See Question&Answers more detail:os...

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

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389 views

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android - Ellipsize individual lines of a SpannableString in a TextView

I have a TextView storing an address that is two lines long. The street goes on the first line and is bold. ... Ex: 3 Main Street Atlanta GA See Question&Answers more detail:os...

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

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305 views

1 answer

android - ProgressDialog created from onCreateDialog stops animating on second run

I create a ProgressDialog in onCreateDialog() like so: protected Dialog onCreateDialog(int id) { if (id == ... good solution to my 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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584 views

1 answer

android - Menu item animation, rotate indefinitely its custom icon

I have a menu item with an icon (imagine for example a clock with a single lancet), I would like to make ... I manage this effect? 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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401 views

1 answer

android - Difference between getApplicationContext and classname.this

When I'm using list view and I have a custom Base Adapter class, I get different text color in list view when ... Can anyone explain it for 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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