Questions tagged as 'android'

Tagged questions
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app stops at undir button

I'm looking for a way to call the method of a java class by pressing a button, so in the layout controlled by that class I have a button to which I put the onclick with my method, the android studio does not show any error compile the app and un...
asked by 13.12.2017 / 18:32
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Error reading Json on Android

I'm trying to read this Json that contains fixes, but it gives me the following error, I'm reading it with JSONArray, I tried to traverse it with a for but it does not let me extract the objects inside the json. Does anyone know what I ca...
asked by 05.12.2017 / 16:14
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Android Studio when deploying does not create the shortcut

I have a Motorola E4 Plus, Android 7.1.1 make a hello world for facebook login with Android Studio Sdk 26 compatible with Android 4.2 and up. Perform several deployments and suddenly the application icon disappeared from both the desktop and...
asked by 05.12.2017 / 16:15
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How to close a WebView automatically after a certain event (Android)?

I am working with TypeForm forms that I show them through WebView in my application. What I'm trying to do is close the WebView after they finish the form. When the form is completed on the screen, a text appears thank...
asked by 03.12.2017 / 15:46
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My app stops android studio

I want to open with a button the google maps through navigation drawer but at the moment of clicking the button it appears that the app has stopped. What can be the error? The logcat shows me the following message: 12-03 01:26...
asked by 03.12.2017 / 06:41
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ScrollView with CardView does not work

I want to use a ScrollView to put in a CardView and a vertical button, I made this XML and if it compiles, but when it is time to test it on a device, the app closes immediately. The device on which I am doing the test is API 22: <?xml vers...
asked by 02.12.2017 / 23:58
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Android Xamarin Listview does not load the elements

It happens that, after creating a listview in the same way it explains in the documentation, the elements are not loaded, as if there were no elements to be displayed. I have verified that yes, there are elements in the array of objects, so i...
asked by 01.12.2017 / 11:10
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Why can not I see a JSON query using the Volley library (Web Services)?

I'm trying to create a web service using the Volley library, only when I run my app on a physical device I do not see the data that is hosted on a free server. The data is already in JSON but it does not remain unseen, already searched on the...
asked by 05.12.2017 / 22:17
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I can not pass info from one ListView to another Activity (ANDROID)

After a long time trying to solve the problem I'm not left other than resorting to this means where I hope someone can help me with this problem. what happens is that I try to send information from a row of a ListView to a new activity where the...
asked by 05.12.2017 / 22:49
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How can you keep a Switch Button ON in android studio?

Good morning folks, I have the following problem: I have a switch button that when I turn it ON starts playing an mp3 file, so all right, the problem is that when I change the screen (ie I change the orientation) and I go back to return to the s...
asked by 29.11.2017 / 15:03