1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package android.databinding.adapters; 17 18 import android.databinding.BindingAdapter; 19 import android.widget.AbsSpinner; 20 import android.widget.ArrayAdapter; 21 import android.widget.SpinnerAdapter; 22 23 public class AbsSpinnerBindingAdapter { 24 25 @BindingAdapter({"android:entries"}) 26 public static void setEntries(AbsSpinner view, CharSequence[] entries) { 27 if (entries != null) { 28 SpinnerAdapter oldAdapter = view.getAdapter(); 29 boolean changed = true; 30 if (oldAdapter != null && oldAdapter.getCount() == entries.length) { 31 changed = false; 32 for (int i = 0; i < entries.length; i++) { 33 if (!entries[i].equals(oldAdapter.getItem(i))) { 34 changed = true; 35 break; 36 } 37 } 38 } 39 if (changed) { 40 ArrayAdapter<CharSequence> adapter = 41 new ArrayAdapter<CharSequence>(view.getContext(), 42 android.R.layout.simple_spinner_item, entries); 43 adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 44 view.setAdapter(adapter); 45 } 46 } else { 47 view.setAdapter(null); 48 } 49 } 50 } 51
