fix nullref on exiting dialer by long pressing of Back key on KYF33

src/io/github/sspanak/tt9/ime/KeyPadHandler.java

@@ -82,6 +82,7 @@ public void onStartInput(EditorInfo inputField, boolean restarting) {
 
 	@Override
 	public void onStartInputView(EditorInfo inputField, boolean restarting) {
+		currentInputConnection = getCurrentInputConnection();
 		onRestart(inputField);
 	}
 

src/io/github/sspanak/tt9/ime/TraditionalT9.java

@@ -7,6 +7,8 @@
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputMethodManager;
 
+import org.jetbrains.annotations.NotNull;
+
 import java.util.ArrayList;
 import java.util.List;
 
@@ -27,8 +29,10 @@
 public class TraditionalT9 extends KeyPadHandler {
 	// internal settings/data
 	private boolean isActive = false;
-	private TextField textField;
-	private InputType inputType;
+	@NotNull
+	private TextField textField = new TextField(null, null);
+	@NotNull
+	private InputType inputType = new InputType(null, null);
 
 	// editing mode
 	protected static final int NON_EDIT = 0;

src/io/github/sspanak/tt9/ime/modes/ModeDialer.java

@@ -1,5 +1,7 @@
 package io.github.sspanak.tt9.ime.modes;
 
+import androidx.annotation.NonNull;
+
 import io.github.sspanak.tt9.ime.helpers.Key;
 
 // see: InputType.isDialer()
@@ -12,4 +14,10 @@ public class ModeDialer extends Mode123 {
 	public boolean onOtherKey(int key) {
 		return !Key.isDecimalSeparator(key) && super.onOtherKey(key);
 	}
+
+	@NonNull
+	@Override
+	public String toString() {
+		return "Dialer";
+	}
 }