package com.marshalchen.common.uimodule.multi_image_selector;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Intent;
import android.content.res.Configuration;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.support.v7.widget.ListPopupWindow;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.GridView;
import android.widget.TextView;
import android.widget.Toast;
import com.marshalchen.common.uimodule.multi_image_selector.adapter.FolderAdapter;
import com.marshalchen.ultimateandroiduicomponent.R;
import com.squareup.picasso.Picasso;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import com.marshalchen.common.uimodule.multi_image_selector.adapter.ImageGridAdapter;
import com.marshalchen.common.uimodule.multi_image_selector.bean.Folder;
import com.marshalchen.common.uimodule.multi_image_selector.bean.Image;
import com.marshalchen.common.uimodule.multi_image_selector.utils.FileUtils;
import com.marshalchen.common.uimodule.multi_image_selector.utils.TimeUtils;
/**
* 图片选择Fragment
* Created by Nereo on 2015/4/7.
*/
public class MultiImageSelectorFragment extends Fragment {
private static final String TAG = "MultiImageSelector";
/** 最大图片选择次数，int类型 */
public static final String EXTRA_SELECT_COUNT = "max_select_count";
/** 图片选择模式，int类型 */
public static final String EXTRA_SELECT_MODE = "select_count_mode";
/** 是否显示相机，boolean类型 */
public static final String EXTRA_SHOW_CAMERA = "show_camera";
/** 默认选择的数据集 */
public static final String EXTRA_DEFAULT_SELECTED_LIST = "default_result";
/** 单选 */
public static final int MODE_SINGLE = 0;
/** 多选 */
public static final int MODE_MULTI = 1;
// 不同loader定义
private static final int LOADER_ALL = 0;
private static final int LOADER_CATEGORY = 1;
// 请求加载系统照相机
private static final int REQUEST_CAMERA = 100;
// 结果数据
private ArrayList<String> resultList = new ArrayList<>();
// 文件夹数据
private ArrayList<Folder> mResultFolder = new ArrayList<>();
// 图片Grid
private GridView mGridView;
private Callback mCallback;
private ImageGridAdapter mImageAdapter;
private FolderAdapter mFolderAdapter;
private ListPopupWindow mFolderPopupWindow;
// 时间线
private TextView mTimeLineText;
// 类别
private TextView mCategoryText;
// 预览按钮
private Button mPreviewBtn;
// 底部View
private View mPopupAnchorView;
private int mDesireImageCount;
private boolean hasFolderGened = false;
private File mTmpFile;
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mCallback = (Callback) activity;
}catch (ClassCastException e){
throw new ClassCastException("The Activity must implement MultiImageSelectorFragment.Callback interface...");
}
}
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.multi_image_select_fragment_multi_image, container, false);
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
// 选择图片数量
mDesireImageCount = getArguments().getInt(EXTRA_SELECT_COUNT);
// 图片选择模式
final int mode = getArguments().getInt(EXTRA_SELECT_MODE);
// 默认选择
if(mode == MODE_MULTI) {
ArrayList<String> tmp = getArguments().getStringArrayList(EXTRA_DEFAULT_SELECTED_LIST);
if(tmp != null && tmp.size()>0) {
resultList = tmp;
}
}
// 是否显示照相机
final boolean showCamera = getArguments().getBoolean(EXTRA_SHOW_CAMERA, true);
mImageAdapter = new ImageGridAdapter(getActivity(), showCamera);
// 是否显示选择指示器
mImageAdapter.showSelectIndicator(mode == MODE_MULTI);
// 如果显示了照相机，则创建临时文件
if(showCamera){
mTmpFile = FileUtils.createTmpFile(getActivity());
}
mPopupAnchorView = view.findViewById(R.id.footer);
mTimeLineText = (TextView) view.findViewById(R.id.timeline_area);
// 初始化，先隐藏当前timeline
mTimeLineText.setVisibility(View.GONE);
mCategoryText = (TextView) view.findViewById(R.id.category_btn);
// 初始化，加载所有图片
mCategoryText.setText("folder_all");
mCategoryText.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(mFolderPopupWindow.isShowing()){
mFolderPopupWindow.dismiss();
}else {
mFolderPopupWindow.show();
int index = mFolderAdapter.getSelectIndex();
index = index == 0 ? index : index - 1;
mFolderPopupWindow.getListView().setSelection(index);
}
}
});
mPreviewBtn = (Button) view.findViewById(R.id.preview);
// 初始化，按钮状态初始化
if(resultList == null || resultList.size()<=0){
mPreviewBtn.setText("preview");
mPreviewBtn.setEnabled(false);
}
mPreviewBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// TODO 预览
}
});
mGridView = (GridView) view.findViewById(R.id.grid);
mGridView.setOnScrollListener(new AbsListView.OnScrollListener() {
@Override
public void onScrollStateChanged(AbsListView absListView, int state) {
final Picasso picasso = Picasso.with(getActivity());
if(state == SCROLL_STATE_IDLE || state == SCROLL_STATE_TOUCH_SCROLL){
picasso.resumeTag(getActivity());
}else{
picasso.pauseTag(getActivity());
}
if(state == SCROLL_STATE_IDLE){
// 停止滑动，日期指示器消失
mTimeLineText.setVisibility(View.GONE);
}else if(state == SCROLL_STATE_FLING){
mTimeLineText.setVisibility(View.VISIBLE);
}
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
if(mTimeLineText.getVisibility() == View.VISIBLE) {
int index = firstVisibleItem + 1 == view.getAdapter().getCount() ? view.getAdapter().getCount() - 1 : firstVisibleItem + 1;
Image image = (Image) view.getAdapter().getItem(index);
if (image != null) {
mTimeLineText.setText(TimeUtils.formatPhotoDate(image.path));
}
}
}
});
mGridView.setAdapter(mImageAdapter);
mGridView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public void onGlobalLayout() {
final int width = mGridView.getWidth();
final int height = mGridView.getHeight();
final int desireSize = getResources().getDimensionPixelOffset(R.dimen.multi_image_select_image_size);
final int numCount = width / desireSize;
final int columnSpace = getResources().getDimensionPixelOffset(R.dimen.multi_image_select_space_size);
int columnWidth = (width - columnSpace*(numCount-1)) / numCount;
mImageAdapter.setItemSize(columnWidth);
if(mFolderPopupWindow == null){
createPopupFolderList(width, height);
}
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN){
mGridView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
}else{
mGridView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
}
}
});
mGridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
if(mImageAdapter.isShowCamera()){
// 如果显示照相机，则第一个Grid显示为照相机，处理特殊逻辑
if(i == 0){
showCameraAction();
}else{
// 正常操作
Image image = (Image) adapterView.getAdapter().getItem(i);
selectImageFromGrid(image, mode);
}
}else{
// 正常操作
Image image = (Image) adapterView.getAdapter().getItem(i);
selectImageFromGrid(image, mode);
}
}
});
mFolderAdapter = new FolderAdapter(getActivity());
}
/**
* 创建弹出的ListView
*/
private void createPopupFolderList(int width, int height) {
mFolderPopupWindow = new ListPopupWindow(getActivity());
mFolderPopupWindow.setAdapter(mFolderAdapter);
mFolderPopupWindow.setContentWidth(width);
mFolderPopupWindow.setHeight(height * 5/8);
mFolderPopupWindow.setAnchorView(mPopupAnchorView);
mFolderPopupWindow.setModal(true);
mFolderPopupWindow.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
if (i == 0) {
getActivity().getSupportLoaderManager().restartLoader(LOADER_ALL, null, mLoaderCallback);
mCategoryText.setText("folder_all");
mImageAdapter.setShowCamera(true);
} else {
Folder folder = (Folder) adapterView.getAdapter().getItem(i);
if (null != folder) {
Bundle args = new Bundle();
args.putString("path", folder.path);
getActivity().getSupportLoaderManager().restartLoader(LOADER_CATEGORY, args, mLoaderCallback);
mCategoryText.setText(folder.name);
}
mImageAdapter.setShowCamera(false);
}
mFolderAdapter.setSelectIndex(i);
mFolderPopupWindow.dismiss();
// 滑动到最初始位置
mGridView.smoothScrollToPosition(0);
}
});
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// 首次加载所有图片
//new LoadImageTask().execute();
getActivity().getSupportLoaderManager().initLoader(LOADER_ALL, null, mLoaderCallback);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// 相机拍照完成后，返回图片路径
if(resultCode == Activity.RESULT_OK) {
if(requestCode == REQUEST_CAMERA){
if (mTmpFile != null) {
if (mCallback != null) {
mCallback.onCameraShot(mTmpFile);
}
}
}
}
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
Log.d(TAG, "on change");
final int orientation = newConfig.orientation;
if(mFolderPopupWindow != null){
if(mFolderPopupWindow.isShowing()){
mFolderPopupWindow.dismiss();
}
}
mGridView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public void onGlobalLayout() {
final int height = mGridView.getHeight();
final int desireSize = getResources().getDimensionPixelOffset(R.dimen.multi_image_select_image_size);
Log.d(TAG, "Desire Size = "+desireSize);
final int numCount = mGridView.getWidth() / desireSize;
Log.d(TAG, "Grid Size = "+mGridView.getWidth());
Log.d(TAG, "num count = "+numCount);
final int columnSpace = getResources().getDimensionPixelOffset(R.dimen.multi_image_select_space_size);
int columnWidth = (mGridView.getWidth() - columnSpace*(numCount-1)) / numCount;
mImageAdapter.setItemSize(columnWidth);
if(mFolderPopupWindow != null){
mFolderPopupWindow.setHeight(height * 5/8);
}
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN){
mGridView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
}else{
mGridView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
}
}
});
super.onConfigurationChanged(newConfig);
}
/**
* 选择相机
*/
private void showCameraAction() {
// 跳转到系统照相机
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if(cameraIntent.resolveActivity(getActivity().getPackageManager()) != null){
// 设置系统相机拍照后的输出路径
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(mTmpFile));
startActivityForResult(cameraIntent, REQUEST_CAMERA);
}else{
Toast.makeText(getActivity(),"msg_no_camera", Toast.LENGTH_SHORT).show();
}
}
/**
* 选择图片操作
* @param image
*/
private void selectImageFromGrid(Image image, int mode) {
if(image != null) {
// 多选模式
if(mode == MODE_MULTI) {
if (resultList.contains(image.path)) {
resultList.remove(image.path);
if(resultList.size() != 0) {
mPreviewBtn.setEnabled(true);
mPreviewBtn.setText("preview" + "(" + resultList.size() + ")");
}else{
mPreviewBtn.setEnabled(false);
mPreviewBtn.setText("preview");
}
if (mCallback != null) {
mCallback.onImageUnselected(image.path);
}
} else {
// 判断选择数量问题
if(mDesireImageCount == resultList.size()){
Toast.makeText(getActivity(), "msg_amount_limit", Toast.LENGTH_SHORT).show();
return;
}
resultList.add(image.path);
mPreviewBtn.setEnabled(true);
mPreviewBtn.setText("preview"+ "(" + resultList.size() + ")");
if (mCallback != null) {
mCallback.onImageSelected(image.path);
}
}
mImageAdapter.select(image);
}else if(mode == MODE_SINGLE){
// 单选模式
if(mCallback != null){
mCallback.onSingleImageSelected(image.path);
}
}
}
}
private LoaderManager.LoaderCallbacks<Cursor> mLoaderCallback = new LoaderManager.LoaderCallbacks<Cursor>() {
private final String[] IMAGE_PROJECTION = {
MediaStore.Images.Media.DATA,
MediaStore.Images.Media.DISPLAY_NAME,
MediaStore.Images.Media.DATE_ADDED,
MediaStore.Images.Media._ID };
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
if(id == LOADER_ALL) {
CursorLoader cursorLoader = new CursorLoader(getActivity(),
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_PROJECTION,
null, null, IMAGE_PROJECTION[2] + " DESC");
return cursorLoader;
}else if(id == LOADER_CATEGORY){
CursorLoader cursorLoader = new CursorLoader(getActivity(),
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_PROJECTION,
IMAGE_PROJECTION[0]+" like '%"+args.getString("path")+"%'", null, IMAGE_PROJECTION[2] + " DESC");
return cursorLoader;
}
return null;
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
if (data != null) {
List<Image> images = new ArrayList<>();
int count = data.getCount();
if (count > 0) {
data.moveToFirst();
do{
String path = data.getString(data.getColumnIndexOrThrow(IMAGE_PROJECTION[0]));
String name = data.getString(data.getColumnIndexOrThrow(IMAGE_PROJECTION[1]));
long dateTime = data.getLong(data.getColumnIndexOrThrow(IMAGE_PROJECTION[2]));
Image image = new Image(path, name, dateTime);
images.add(image);
if( !hasFolderGened ) {
// 获取文件夹名称
File imageFile = new File(path);
File folderFile = imageFile.getParentFile();
Folder folder = new Folder();
folder.name = folderFile.getName();
folder.path = folderFile.getAbsolutePath();
folder.cover = image;
if (!mResultFolder.contains(folder)) {
List<Image> imageList = new ArrayList<>();
imageList.add(image);
folder.images = imageList;
mResultFolder.add(folder);
} else {
// 更新
Folder f = mResultFolder.get(mResultFolder.indexOf(folder));
f.images.add(image);
}
}
}while(data.moveToNext());
mImageAdapter.setData(images);
// 设定默认选择
if(resultList != null && resultList.size()>0){
mImageAdapter.setDefaultSelected(resultList);
}
mFolderAdapter.setData(mResultFolder);
hasFolderGened = true;
}
}
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
}
};
/**
* 回调接口
*/
public interface Callback{
public void onSingleImageSelected(String path);
public void onImageSelected(String path);
public void onImageUnselected(String path);
public void onCameraShot(File imageFile);
}
}