/*******************************************************************************
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* Copyright 2011-2013 Sergey Tarasevich
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*******************************************************************************/
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package com.nostra13.universalimageloader.core.listener;
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import android.graphics.Bitmap;
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import android.view.View;
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import com.nostra13.universalimageloader.core.assist.FailReason;
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/**
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* Listener for image loading process.<br />
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* You can use {@link SimpleImageLoadingListener} for implementing only needed methods.
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*
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* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
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* @see SimpleImageLoadingListener
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* @see com.nostra13.universalimageloader.core.assist.FailReason
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* @since 1.0.0
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*/
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public interface ImageLoadingListener {
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/**
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* Is called when image loading task was started
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*
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* @param imageUri Loading image URI
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* @param view View for image
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*/
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void onLoadingStarted(String imageUri, View view);
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/**
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* Is called when an error was occurred during image loading
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*
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* @param imageUri Loading image URI
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* @param view View for image. Can be <b>null</b>.
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* @param failReason {@linkplain com.nostra13.universalimageloader.core.assist.FailReason The reason} why image
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* loading was failed
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*/
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void onLoadingFailed(String imageUri, View view, FailReason failReason);
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/**
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* Is called when image is loaded successfully (and displayed in View if one was specified)
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*
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* @param imageUri Loaded image URI
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* @param view View for image. Can be <b>null</b>.
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* @param loadedImage Bitmap of loaded and decoded image
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*/
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void onLoadingComplete(String imageUri, View view, Bitmap loadedImage);
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/**
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* Is called when image loading task was cancelled because View for image was reused in newer task
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*
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* @param imageUri Loading image URI
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* @param view View for image. Can be <b>null</b>.
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*/
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void onLoadingCancelled(String imageUri, View view);
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}
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