Questions tagged as 'android'

Tagged questions
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Hide Toolbar with CoordinatorLayout + TabLayout + ViewPager

Good morning, I'm trying to implement the google Material Design features and wanted to hide the Toolbar when I scroll in the ViewPager (it has a RecyclerView inside), however I'm not getting the desired effect (although I have all the necessary...
asked by 29.04.2016 / 12:07
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Facebook Logout Button SDK 4+. Error uploading activity

When trying to implement facebook logout, in another activity , other than the one that logs in, the following message appears: Error    MainActivity}: java.lang.NullPointerException: Attempt to invoke   virtual method 'void   andr...
asked by 20.04.2016 / 18:36
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How to set the size of an ExpandableListView icon?

I'm using an ExpandableListView, where I have a content expansion icon, but every time the option height increases, the image stays the same height, distorting the image. How do I fix the size? In class I make the following call to xml:   ...
asked by 04.05.2016 / 00:30
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Save the information of a contact in android xamarin

void button_Click(object sender, EventArgs e) { //Create a new intent for choosing a contact var contactPickerIntent = new Intent(Intent.ActionPick, Android.Provider.ContactsContract.CommonDataKinds.Email.ContentUr...
asked by 04.05.2016 / 13:35
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Discover ips of other devices connected to an android [closed]

The problem is more or less the following, sometimes I need to use an Android device to generate a network, but I do not know how to get the ips from the connected clients. I saw some examples using ping, which sends ping to all available ips...
asked by 26.04.2016 / 22:00
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Error installing Android Studio

Well, I'm having the following error installing Android Studio: I already configured the variable, and already installed the JDK Even then, the error persists!     
asked by 26.05.2016 / 17:38
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putextra puts data in RAM memory

putextra puts data in RAM? Do I have to getIntent().removeExtra("nome") to delete content?     
asked by 26.05.2016 / 18:03
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Xamarin - Load Frame with image inside a ContentView

I want to change this Sketch so that I can draw on a photo. I downloaded the github and I am making the changes. However, I'm not able to load an image on the screen when I set Image's Source. private Grid BuildGrid() { retu...
asked by 25.05.2016 / 20:07
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Standardize edtitext type date

I would like to know how I change the format of EditText type date android:layout_width="wrap_content" android:layout_height="wrap_content" android:inputType="date" android:ems="10" android:id="@+...
asked by 14.04.2016 / 12:55
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Error fetching Information from SharedPreferences Android

I have an android application, and in it I save some basic user information in SharedPreferences, however I started to display the following JSON parse error:    java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1...
asked by 14.04.2016 / 19:43