Questions tagged as 'android'

Tagged questions
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Intent on android

People I have this little problem with an intent that I do not know because the app when I try it closes. I have this in the MainActivity public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInst...
asked by 17.11.2018 / 22:38
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The position of the List Element Changes with SearchView and I have an unexpected view

Good day !!! The result of Searchview is fine, but when I click on the Recycler to start another activity on with the product data it changes. Example: when I look for an example product "Oil", it shows the result of "Beer", because the position...
asked by 18.11.2018 / 13:13
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Problem changing background of a LinearLayout after adding an Android Studio intersitial

I have created four buttons with LinearLayout , my user must select one, when they are not selected they have a gray background and when you click on one your background changes to red and the one selected previously passes to gray. Everythi...
asked by 18.11.2018 / 17:01
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Read and upload a JSON file from URL

With the Volley library I can load a JSON from a URL and add it to a ListView, the test of the article I saw works well. This is the code: public class MainActivity extends AppCompatActivity { ListView fruitsList; String url = "ht...
asked by 18.11.2018 / 12:01
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Android Studio delete item from Recycler View

I'm trying to delete items from a Recycler View, which I upload to a SQLite database. Selecting the "Delete" button deletes the record from the SQLite database, until it's all right, but it does not erase the element itself from the Recycler Vie...
asked by 25.11.2018 / 19:23
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React native expo detach, error running in Android Studio

Well I did the detach and I created the Android folder, when I do the build it sends me an error: El sistema no puede encontrar la ruta especificada. :app:exponentPrebuildStep FAILED :app:exponentPrebuildStep (Thread[Task worker for ':',5,mai...
asked by 16.11.2018 / 18:54
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How to restore some files from the SD to the Databases?

I've been stuck with this for some time and I do not see any solution. I have managed to make a copy of the database of the Databases folder that is inside my project making a backup in the SD, but the problem is that I can not restore these fil...
asked by 16.11.2018 / 21:32
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Efficiently manage the MediaPlayer class

I try to show a series of audios in a list, with their corresponding buttons play, pause and stop each one .. That I have done, not in the best way possible but I do not mind doing it by hand .. The fact is that when I play an audio, when pla...
asked by 15.11.2018 / 21:15
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How to unmark a RadioButton on android? (only one, without radio group)

How to unmark a RadioButtom on android? I click on it and it is marked but I can not uncheck it, try putting a click listener but it did not work for me rdbBiopsiaCon.setOnClickListener(new View.OnClickListener() { @Override p...
asked by 18.11.2018 / 06:19
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Error running compositeDisposable in an Android fragment

I hope you can help me :) I've been stuck in this and some time. I am running an app that fills Mysql with data and when I try the method in an Activity it works normally, but when I execute it in a fragment it gives me an error when I execute i...
asked by 15.11.2018 / 15:52