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POExtending AlertDialogs in Android (where to find examples, how to get title and buttons)
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copied!<p>I have been looking a lot for examples on how to correctly extend AlertDialogs and get the expected behaviour, but I can hardly find any.</p> <p>The docs on google doesnt really say much either.</p> <p>Yes, I know I can use a AlertDialog.Builder to build the most commons things, but for some reasons I want to create my own AlertDialogs (I have code that I want contained in separate java files for one reason).</p> <p>I have created my PausDialog.java (see code below), it shows up but I am unable to get the <em>title</em> or any of the <em>buttons</em> (positive, negative etc) to show in the Dialog. See this picture:</p> <p><img src="https://i.stack.imgur.com/SAkJL.jpg" alt="No buttons and no title in the PausDialog"></p> <p>So, question 1: where can I find good, clean and useful examples on how to correctly extend AlertDialogs and how to use them thereafter</p> <p>question 2: why can I not see the title or any buttons using the custom AlertDialog below?</p> <hr> <p><strong>PausDialog.java</strong></p> <pre><code>package Test; import android.app.Activity; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.os.Handler; import android.os.SystemClock; import android.text.Editable; import android.text.TextWatcher; import android.view.Gravity; import android.view.MotionEvent; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.view.WindowManager; import android.view.inputmethod.InputMethodManager; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; public class PausDialog extends AlertDialog { protected PausDialog(Context context) { super(context, R.style.DialogTheme); } @Override protected void onCreate(android.os.Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.paus); WindowManager.LayoutParams params = getWindow().getAttributes(); params.gravity = Gravity.TOP; final EditText ed1= (EditText) findViewById(R.id.editTextPausArea); final EditText ed2= (EditText) findViewById(R.id.EditTextPausTimeFrom); final EditText ed3= (EditText) findViewById(R.id.EditTextPausTimeTo); TextView tv1 = (TextView)findViewById(R.id.textViewPausArea); tv1.setText(LanguageHandler.GetString("AREA")); tv1 = (TextView)findViewById(R.id.textViewPausTime); tv1.setText(LanguageHandler.GetString("TIME")); setButton(DialogInterface.BUTTON_POSITIVE, "Positive", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { int fromArea = 0; int fromTime = 0; int toTime = 0; try { fromArea = Integer.parseInt(ed1.getText().toString()); fromTime = Integer.parseInt(ed2.getText().toString()); toTime = Integer.parseInt(ed3.getText().toString()); } catch(Exception e) { // TODO fail } } }); setButton(DialogInterface.BUTTON_NEGATIVE, "Negative", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // Do something } }); } } </code></pre> <p><strong>MainActivity.java</strong>, calling the PausDialog:</p> <pre><code>PausDialog pd = new PausDialog(MainActivity.this); pd.show(); </code></pre> <p><strong>The layout for my PausDialog, paus.xml:</strong></p> <pre><code><?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:weightSum="1"> <RelativeLayout android:gravity="top" android:layout_height="200dp" android:layout_weight="0.11" android:layout_width="304dp"> <TextView android:layout_alignParentLeft="true" android:text="Område" android:layout_width="wrap_content" android:textAppearance="?android:attr/textAppearanceMedium" android:id="@+id/textViewPausArea" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_marginLeft="17dp" android:layout_marginTop="18dp"></TextView> <EditText android:layout_alignBaseline="@+id/textViewPausArea" android:id="@+id/editTextPausArea" android:layout_width="80dp" android:layout_alignBottom="@+id/textViewPausArea" android:inputType="number" android:layout_height="wrap_content" android:layout_toRightOf="@+id/textViewPausArea" android:layout_marginLeft="17dp"> <requestFocus></requestFocus> </EditText> <TextView android:text="Tid" android:layout_width="wrap_content" android:textAppearance="?android:attr/textAppearanceMedium" android:layout_below="@+id/editTextPausArea" android:id="@+id/textViewPausTime" android:layout_height="wrap_content" android:layout_marginTop="30dp" android:layout_alignLeft="@+id/textViewPausArea"></TextView> <EditText android:layout_alignBaseline="@+id/textViewPausTime" android:id="@+id/EditTextPausTimeFrom" android:layout_width="80dp" android:layout_alignBottom="@+id/textViewPausTime" android:inputType="time" android:layout_height="wrap_content" android:layout_alignLeft="@+id/editTextPausArea"></EditText> <TextView android:text=" - " android:layout_width="wrap_content" android:textAppearance="?android:attr/textAppearanceMedium" android:id="@+id/textView3" android:layout_height="wrap_content" android:layout_alignBaseline="@+id/EditTextPausTimeFrom" android:layout_alignBottom="@+id/EditTextPausTimeFrom" android:layout_toRightOf="@+id/EditTextPausTimeFrom"></TextView> <EditText android:id="@+id/EditTextPausTimeTo" android:layout_width="80dp" android:inputType="time" android:layout_height="wrap_content" android:layout_alignBaseline="@+id/textView3" android:layout_alignBottom="@+id/textView3" android:layout_toRightOf="@+id/textView3"></EditText> </RelativeLayout> </LinearLayout> </code></pre>

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