Java tutorial
/* * Copyright (C) 2013 Manuel Peinado * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.manuelpeinado.numericpageindicator.demo; import android.graphics.Color; import android.support.v4.view.PagerAdapter; import android.util.TypedValue; import android.view.Gravity; import android.view.View; import android.view.ViewGroup; import android.widget.TextView; public class MyPagerAdapter extends PagerAdapter { private static final int[] COLORS = { Color.rgb(192, 128, 128), Color.rgb(128, 192, 128), Color.rgb(128, 128, 192), }; @Override public int getCount() { return 20; } @Override public boolean isViewFromObject(View view, Object object) { return view == object; } @Override public Object instantiateItem(ViewGroup container, int position) { TextView item = new TextView(container.getContext()); item.setText(Integer.toString(position + 1)); item.setTextColor(Color.argb(192, 255, 255, 255)); item.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 50); item.setGravity(Gravity.CENTER); item.setBackgroundColor(COLORS[position % COLORS.length]); ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); container.addView(item, layoutParams); return item; } @Override public void destroyItem(ViewGroup container, int position, Object object) { container.removeView((View) object); } }