Java tutorial
/* * Copyright (c) 2017 James Oliver * * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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.jameswolfeoliver.pigeon.Utilities; import android.content.Context; import android.graphics.PorterDuff; import android.graphics.drawable.Drawable; import android.os.Build; import android.support.annotation.ColorRes; import android.support.annotation.DrawableRes; import android.support.annotation.NonNull; import android.support.v4.content.ContextCompat; import android.support.v4.graphics.drawable.DrawableCompat; import android.view.MenuItem; import android.view.View; import android.widget.ImageView; public class DrawableHelper { @NonNull Context mContext; @ColorRes private int mColor; private Drawable mDrawable; private Drawable mWrappedDrawable; public DrawableHelper(@NonNull Context context) { mContext = context; } public static DrawableHelper withContext(@NonNull Context context) { return new DrawableHelper(context); } public DrawableHelper withDrawable(@DrawableRes int drawableRes) { mDrawable = ContextCompat.getDrawable(mContext, drawableRes); return this; } public DrawableHelper withDrawable(@NonNull Drawable drawable) { mDrawable = drawable; return this; } public DrawableHelper withColor(@ColorRes int colorRes) { mColor = ContextCompat.getColor(mContext, colorRes); return this; } public DrawableHelper tint() { if (mDrawable == null) { throw new NullPointerException(); } if (mColor == 0) { throw new IllegalStateException(); } mWrappedDrawable = mDrawable.mutate(); mWrappedDrawable = DrawableCompat.wrap(mWrappedDrawable); DrawableCompat.setTint(mWrappedDrawable, mColor); DrawableCompat.setTintMode(mWrappedDrawable, PorterDuff.Mode.SRC_IN); return this; } @SuppressWarnings("deprecation") public void applyToBackground(@NonNull View view) { if (mWrappedDrawable == null) { throw new NullPointerException(); } if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) { view.setBackground(mWrappedDrawable); } else { view.setBackgroundDrawable(mWrappedDrawable); } } public void applyTo(@NonNull ImageView imageView) { if (mWrappedDrawable == null) { throw new NullPointerException(); } imageView.setImageDrawable(mWrappedDrawable); } public void applyTo(@NonNull MenuItem menuItem) { if (mWrappedDrawable == null) { throw new NullPointerException(); } menuItem.setIcon(mWrappedDrawable); } public Drawable get() { if (mWrappedDrawable == null) { throw new NullPointerException(); } return mWrappedDrawable; } }