Questions tagged as 'android'

Tagged questions
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How to share audio from the app to Whatsapp?

My code is able to open Whatsapp, but when you select the person you do not send anything and back to Whatsapp, how can I share the audio from my app?    code I'm using public void onClickshe (View v) { Intent shareIntent = new Intent(...
asked by 08.11.2017 / 20:44
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NullPointerException while executing ListView.setAdapter (Android)

I'm implementing an application where I need to display a list of Dogs (already registered in the DB) and allow clicking on an item in the list to display a new activy to edit the data. The problem is that I'm getting a NullPointerException w...
asked by 03.11.2017 / 20:40
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Android application = Unfortunately project_name has stopped

I'm a beginner on Android and have read some similar questions but could not solve my problem. Running my app gives the error:    Unfortunately project_name has stopped. MainActivity.java package br.com.xxxxxxx.chatxxxxxx; import an...
asked by 04.11.2017 / 19:51
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How to create a class with a NavigationDrawer to use in various Activities?

I started studying Android development a short time ago, I saw that to use a NavigationDrawer it is recommended to use fragments to change a FrameLayout in the main Activity, but in the new activities that I create, I did not want to have to put...
asked by 15.12.2015 / 14:12
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Open external links in another browser

So I have an App that my site is all responsive and is working perfectly. But I would like the external links to be opened in another browser. For example: The user clicks on a Google Adsense ad that has the site and the ad site opens in the...
asked by 29.07.2016 / 00:01
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Attempt to invoke virtual method 'java.lang.String java.lang.String.toString ()' on a null object reference

I'm developing an application that has the objective of consulting prices and ordering times consuming the service of the Post Office. However I am having difficulty implementing the application service. When I put a Toast to see if I am able to...
asked by 10.11.2017 / 18:44
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Error while changing table SQLITE - no such column

Include a new column in a table. I reinstalled the application and at the time of saving the data there is a message saying that there is no path picture column, in my case, in the clients table. I read some things about it and was advised to in...
asked by 26.01.2016 / 03:57
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When sending Java object from an android app to the database one of the attributes goes as null

Produto produto = new Produto(); produto.setNome(edtNome.getText().toString()); produto.setPreco(Double.parseDouble(edtPreco.getText().toString().replace(",", "."))); produto.setUnidMedida(txtUnidMedida.getText().toString()); I'm trying to se...
asked by 05.11.2017 / 07:11
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I can not resize Popup in my App

I downloaded a project and I have a popup working. I was doing the same thing on my project and nothing. It does not make any mistake, only the popup does not rise as it should, it occupies the whole area of the mu App. I put a button in the pop...
asked by 04.11.2017 / 22:16
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Optimize Java code

Well, I'm creating an alarm in android and I wanted to know if you inves to make a switch for each editText if it was a way to check all in one switch, I tried with a for and I was incremented, but without success, here this is my code, I hope y...
asked by 05.11.2017 / 00:21