AutoCompletion functionality

demo/src/main/java/me/gujun/android/taggroup/demo/TagEditorActivity.java

@@ -4,6 +4,8 @@
 import android.support.v7.app.ActionBarActivity;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.widget.ArrayAdapter;
+import android.widget.AutoCompleteTextView;
 
 import me.gujun.android.taggroup.TagGroup;
 import me.gujun.android.taggroup.demo.db.TagsManager;
@@ -23,6 +25,20 @@ protected void onCreate(Bundle savedInstanceState) {
 
         mTagGroup = (TagGroup) findViewById(R.id.tag_group);
         mTagGroup.setTags(tags);
+        mTagGroup.setOnTagTextEntryListener(new TagGroup.OnTagTextEntryListener() {
+            @Override
+            public void onTextEntry(AutoCompleteTextView tagView, String text) {
+                if (text.equals("A")) {
+                    tagView.setAdapter(new ArrayAdapter<>(TagEditorActivity.this, android.R.layout.simple_list_item_1, new String[]{"Au", "Bu", "Cy"}));
+                } else if (text.equals("Au")) {
+                    tagView.setAdapter(new ArrayAdapter<>(TagEditorActivity.this, android.R.layout.simple_list_item_1, new String[]{"Aus", "Bul", "Cyp"}));
+                } else if (text.equals("Aus")) {
+                    tagView.setAdapter(new ArrayAdapter<>(TagEditorActivity.this, android.R.layout.simple_list_item_1, new String[]{"Aust", "Bulg", "Cypr"}));
+                } else if (text.equals("Aust")) {
+                    tagView.setAdapter(new ArrayAdapter<>(TagEditorActivity.this, android.R.layout.simple_list_item_1, new String[]{"Australia", "Bulgaria", "Cyprus"}));
+                }
+            }
+        });
     }
 
     @Override

library/build.gradle

@@ -13,6 +13,6 @@ android {
     }
 }
 // Used to push in maven
-apply from: '../maven-push.gradle'
+//apply from: '../maven-push.gradle'
 dependencies {
 }

library/src/main/java/me/gujun/android/taggroup/TagGroup.java

@@ -13,6 +13,7 @@
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.text.Editable;
+import android.text.InputType;
 import android.text.TextUtils;
 import android.text.TextWatcher;
 import android.text.method.ArrowKeyMovementMethod;
@@ -26,6 +27,7 @@
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputConnection;
 import android.view.inputmethod.InputConnectionWrapper;
+import android.widget.AutoCompleteTextView;
 import android.widget.TextView;
 
 import java.util.ArrayList;
@@ -134,6 +136,9 @@ public class TagGroup extends ViewGroup {
     /** Listener used to handle tag click event. */
     private InternalTagClickListener mInternalTagClickListener = new InternalTagClickListener();
 
+    /** Listener used to handle tag text entry event. */
+    public OnTagTextEntryListener onTagTextEntryListener;
+
     public TagGroup(Context context) {
         this(context, null);
     }
@@ -457,6 +462,15 @@ public void setOnTagChangeListener(OnTagChangeListener l) {
         mOnTagChangeListener = l;
     }
 
+    /**
+     * Register a callback to be invoked when a tag text is entered.
+     *
+     * @param l the callback that will be used to inform text entry event
+     */
+    public void setOnTagTextEntryListener(OnTagTextEntryListener l) {
+        this.onTagTextEntryListener = l;
+    }
+
     /**
      * @see #appendInputTag(String)
      */
@@ -553,6 +567,10 @@ public interface OnTagClickListener {
         void onTagClick(String tag);
     }
 
+    public interface OnTagTextEntryListener {
+        void onTextEntry(AutoCompleteTextView tagView, String text);
+    }
+
     /**
      * Per-child layout information for layouts.
      */
@@ -648,7 +666,7 @@ public void onClick(View v) {
     /**
      * The tag view which has two states can be either NORMAL or INPUT.
      */
-    class TagView extends TextView {
+    class TagView extends AutoCompleteTextView {
         public static final int STATE_NORMAL = 1;
         public static final int STATE_INPUT = 2;
 
@@ -717,6 +735,8 @@ public TagView(Context context, final int state, CharSequence text) {
             setGravity(Gravity.CENTER);
             setText(text);
             setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
+            setRawInputType(InputType.TYPE_CLASS_TEXT);
+            setImeOptions(EditorInfo.IME_ACTION_GO);
 
             mState = state;
 
@@ -737,6 +757,21 @@ public boolean onLongClick(View v) {
             if (state == STATE_INPUT) {
                 requestFocus();
 
+                addTextChangedListener(new TextWatcher() {
+                    @Override
+                    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+                    }
+
+                    @Override
+                    public void onTextChanged(CharSequence s, int start, int before, int count) {
+                    }
+
+                    @Override
+                    public void afterTextChanged(Editable s) {
+                        if (onTagTextEntryListener != null)  onTagTextEntryListener.onTextEntry(TagView.this, s.toString());
+                    }
+                });
+
                 // Handle the ENTER key down.
                 setOnEditorActionListener(new OnEditorActionListener() {
                     @Override