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 17 package com.android.settings.widget; 18 19 import android.annotation.Nullable; 20 import android.os.Bundle; 21 import android.util.TypedValue; 22 import android.view.Gravity; 23 import android.view.View; 24 import android.view.ViewGroup; 25 import android.view.ViewGroup.LayoutParams; 26 import android.widget.TextView; 27 28 import com.android.settings.R; 29 import com.android.settings.SettingsPreferenceFragment; 30 31 public abstract class EmptyTextSettings extends SettingsPreferenceFragment { 32 33 private TextView mEmpty; 34 35 @Override onViewCreated(View view, @Nullable Bundle savedInstanceState)36 public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { 37 super.onViewCreated(view, savedInstanceState); 38 mEmpty = new TextView(getContext()); 39 mEmpty.setGravity(Gravity.CENTER); 40 final int textPadding = getContext().getResources().getDimensionPixelSize( 41 R.dimen.empty_text_padding); 42 mEmpty.setPadding(textPadding, 0 /* top */, textPadding, 0 /* bottom */); 43 TypedValue value = new TypedValue(); 44 getContext().getTheme().resolveAttribute(android.R.attr.textAppearanceMedium, value, true); 45 mEmpty.setTextAppearance(value.resourceId); 46 ((ViewGroup) view.findViewById(android.R.id.list_container)).addView(mEmpty, 47 new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT)); 48 setEmptyView(mEmpty); 49 } 50 setEmptyText(int text)51 protected void setEmptyText(int text) { 52 mEmpty.setText(text); 53 } 54 } 55