findviewbyid

I'm having a trouble with findViewByid but I can't find where the problem is. Here's my FirstFragment class code: import android.app.Fragment; import android.os.Bundle; import android.support.annotation.Nullable; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.webkit.WebSettings; import android.webkit.WebView; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.ProgressBar; import java.util.ArrayList; import java.util.List; public class FirstFragment extends Fragment { public static final String

I'm trying to figure out the best way to do Android View Binding in Kotlin. It seems like there are a few of options out there: findViewById val button: Button by lazy { findViewById<Button>(R.id.button) } Butterknife https://github.com/JakeWharton/butterknife @BindView(R.id.button) lateinit var button: Button Kotlin Android Extensions https://kotlinlang.org/docs/tutorials/android-plugin.html import kotlinx.android.synthetic.main.activity_main.* I'm pretty familiar with findViewById and Butterknife in java land, but what are the pros and cons of each view binding approach in Kotlin? Does

Probably most Android devs know that findViewById is not a cheap operation. Another thing that most of us know, is that you can boost the performance by using the smallest sub-tree of the view hierarchy to find views by their id, example: <LinearLayout android:id="@+id/some_id_0"> <LinearLayout android:id="@+id/some_id_1"> <LinearLayout android:id="@+id/some_id_2"> <TextView android:id="@+id/textview" /> </LinearLayout> </LinearLayout> </LinearLayout> In this case you probably want to search in the LinearLayout with the id == @id/textview But what is the case when the hierarchy is not

I have this problem with fragments.. I wanted to add a drawer menu in my app and than work with fragments. I have this code, and when i putted the fragments "findviewbyid" didnt works more. Someone can help me? protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.fragment_contact); final EditText nome = (EditText) findViewById(R.id.nome); final EditText citta = (EditText) findViewById(R.id.citta); final EditText numero = (EditText) findViewById(R.id.numero); final EditText email = (EditText) findViewById(R.id.email); final EditText

This is my code @Override public void onClick(View v) { final AlertDialog.Builder adb = new AlertDialog.Builder(getApplicationContext()); adb.setView(LayoutInflater.from(getApplicationContext()).inflate(R.layout.custom, null)); adb.setPositiveButton("Add",new android.content.DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int arg1) { DatePicker datePicker = (DatePicker)findViewById(R.id.datePicker); java.util.Date date = null; Calendar cal = GregorianCalendar.getInstance(); cal.set(datePicker.getYear(),datePicker.getMonth(), datePicker.getDayOfMonth()); date =

I am trying to use a custom time picker and then run the picker from a fragment. This is the code for the time picker dialog (TimePickerFragment.java): package com.ravit.android.aroundtheclock; import android.app.Dialog; import android.app.DialogFragment; import android.app.Fragment; import android.app.TimePickerDialog; import android.os.Bundle; import android.text.format.DateFormat; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.TimePicker; import java.util.Calendar; /** * A simple {@link Fragment} subclass. */ public class