package com.andbase.demo.activity;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.widget.Toolbar;
import android.util.DisplayMetrics;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.GridView;
import com.andbase.demo.R;
import com.andbase.demo.adapter.AlbumGridAdapter;
import com.andbase.demo.global.MyApplication;
import com.andbase.demo.model.ImageInfo;
import com.andbase.library.app.base.AbBaseActivity;
import com.andbase.library.asynctask.AbTaskItem;
import com.andbase.library.asynctask.AbTaskObjectListener;
import com.andbase.library.asynctask.AbTaskQueue;
import com.andbase.library.http.AbHttpUtil;
import com.andbase.library.util.AbAppUtil;
import com.andbase.library.util.AbLogUtil;
import com.andbase.library.util.AbToastUtil;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/**
*
* Copyright 2012 amsoft.cn
* 名称：AlbumActivity.java
* 描述：TODO
* @author 还如一梦中
* @date 2015年8月12日 上午11:14:44
* @version v1.0
*/
public class AlbumActivity extends AbBaseActivity implements GridView.OnScrollListener{
private MyApplication application;
private AbHttpUtil httpUtil;
private Toolbar toolbar = null;
private ArrayList<ImageInfo> imageInfos = null;
private AbTaskQueue task;
private GridView gridView = null;
private AlbumGridAdapter adapter = null;
private int column = 3;
private int lastState = AbsListView.OnScrollListener.SCROLL_STATE_IDLE;
private int currentPage = 0;
private int pageSize = 60;
private int firstVisiblePosition = 0;
private int lastVisiblePosition = 0;
//0 顶部 1中部 2 底部
private int scrollPosition = 0;
private boolean loading = false;
private boolean hasMore = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_album);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
toolbar.setTitle(R.string.title_choose_album);
toolbar.setContentInsetsRelative(0, 0);
toolbar.setNavigationIcon(R.drawable.ic_back);
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
application = (MyApplication)this.getApplication();
httpUtil = AbHttpUtil.getInstance(this);
task = AbTaskQueue.newInstance();
gridView = (GridView)this.findViewById(R.id.grid_view);
imageInfos = new ArrayList<ImageInfo>();
DisplayMetrics dm = AbAppUtil.getDisplayMetrics(this);
int width = (dm.widthPixels-25)/column;
adapter = new AlbumGridAdapter(this,imageInfos,width,width,imageLoader);
gridView.setAdapter(adapter);
gridView.setOnScrollListener(this);
adapter.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if(position == 0){
Intent intent = new Intent(AlbumActivity.this, CaptureActivity.class);
intent.putExtra("cameraId", 0);
intent.putExtra("orientation", 0);
startActivity(intent);
}else{
ArrayList<String> pathStringArray = new ArrayList<String>();
for(ImageInfo imageInfo:imageInfos){
pathStringArray.add(imageInfo.getPath());
}
Intent intent = new Intent(AlbumActivity.this, ImageViewerActivity.class);
intent.putStringArrayListExtra("PATH",pathStringArray);
intent.putExtra("POSITION",position);
startActivity(intent);
}
AbToastUtil.showToast(AlbumActivity.this,"pos:"+position+",path:"+imageInfos.get(position).getPath());
}
});
//Android 版本大于6.0 要代码内申请权限
AbAppUtil.requestSDCardPermission(this);
loadData(currentPage+1);
}
public void loadData(final int page){
loading = true;
final AbTaskItem item = new AbTaskItem();
item.setListener(new AbTaskObjectListener() {
@Override
public <T> T getObject() {
List<ImageInfo> list = initData(false,page);
return (T)list;
}
@Override
public <T> void update(T t) {
List<ImageInfo> list = (List<ImageInfo>)t;
if(page == 1){
imageInfos.clear();
}
if(list == null || list.size() == 0){
hasMore = false;
}else{
currentPage+=1;
imageInfos.addAll(list);
adapter.setFling(false);
adapter.notifyDataSetChanged();
}
loading = false;
}
});
task.execute(item);
}
/**
* 初始化
*/
public List<ImageInfo> initData(boolean thumbnails,int page){
List<ImageInfo> pathList = new ArrayList<ImageInfo>();
if(page ==1){
ImageInfo image = new ImageInfo();
image.setThumbnailsPath(String.valueOf(R.drawable.cam_photo));
pathList.add(image);
}
if(!thumbnails){
String[] projection = {MediaStore.Images.Media._ID,MediaStore.Images.Media.SIZE};
Cursor cursor = this.getContentResolver().query( MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, null, null, MediaStore.Images.Media._ID+ " DESC limit "+((page-1) * pageSize)+","+pageSize);
int columnIDIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID);
int columnSizeIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID);
while (cursor.moveToNext()) {
int imageID = cursor.getInt(columnIDIndex);
int size = cursor.getInt(columnSizeIndex);
Uri imageUri = Uri.withAppendedPath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "" + imageID);
String realPath = getRealFilePath(AlbumActivity.this,imageUri);
//AbLogUtil.e("TAG","SIZE:"+size);
if(new File(realPath).exists()){
pathList.add(new ImageInfo(imageID,realPath,realPath));
}
}
cursor.close();
}else{
//缩略图 手机兼容性问题严重 不可用
String[] projection = {MediaStore.Images.Thumbnails._ID,MediaStore.Images.Thumbnails.IMAGE_ID};
Cursor cursor = this.getContentResolver().query( MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, projection, null, null, MediaStore.Images.Thumbnails._ID+ " DESC limit "+((page-1) * pageSize)+","+pageSize);
int columnIDIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID);
int columnImageIDIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Thumbnails.IMAGE_ID);
while (cursor.moveToNext()) {
int imageID = cursor.getInt(columnIDIndex);
int imageIDReal = cursor.getInt(columnImageIDIndex);
Uri imageUri = Uri.withAppendedPath(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, "" + imageID);
pathList.add(new ImageInfo(imageIDReal,null,getRealFilePath(AlbumActivity.this,imageUri)));
}
cursor.close();
for(ImageInfo image:pathList){
String[] projection2 = {MediaStore.Images.Media._ID,MediaStore.Images.Media.SIZE};
Cursor cursor2 = this.getContentResolver().query( MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection2, ""+MediaStore.Images.Media._ID+"= ? ", new String[]{""+image.getId()}, "");
int columnIDIndex2 = cursor2.getColumnIndexOrThrow(MediaStore.Images.Media._ID);
int columnSizeIndex2 = cursor2.getColumnIndexOrThrow(MediaStore.Images.Media._ID);
if (cursor2.moveToFirst()) {
int imageID2 = cursor2.getInt(columnIDIndex2);
int size2 = cursor2.getInt(columnSizeIndex2);
Uri imageUri2 = Uri.withAppendedPath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "" + imageID2);
String realPath2 = getRealFilePath(AlbumActivity.this,imageUri2);
//AbLogUtil.e("TAG","SIZE:"+size);
image.setPath(realPath2);
}
cursor.close();
}
}
return pathList;
}
public String getRealFilePath(final Context context, final Uri uri ) {
if ( null == uri ) return null;
final String scheme = uri.getScheme();
String data = null;
if ( scheme == null )
data = uri.getPath();
else if ( ContentResolver.SCHEME_FILE.equals( scheme ) ) {
data = uri.getPath();
} else if ( ContentResolver.SCHEME_CONTENT.equals( scheme ) ) {
Cursor cursor = context.getContentResolver().query( uri, new String[] { MediaStore.Images.ImageColumns.DATA }, null, null, null );
if ( null != cursor ) {
if ( cursor.moveToFirst() ) {
int index = cursor.getColumnIndex( MediaStore.Images.ImageColumns.DATA );
if ( index > -1 ) {
data = cursor.getString( index );
}
}
cursor.close();
}
}
return data;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_album, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_scan) {
//扫描
initData(false,1);
return true;
}
return super.onOptionsItemSelected(item);
}
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount,
int totalItemCount) {
if (firstVisibleItem + visibleItemCount == totalItemCount) {
//底部
toolbar.setSubtitle("底部");
//加载下一页
if(!loading && hasMore && scrollPosition!=2 && currentPage!=0){
loadData(currentPage+1);
//AbLogUtil.e(AlbumActivity.class,"底部");
}
scrollPosition = 2;
} else {
toolbar.setSubtitle("中部");
//AbLogUtil.e(AlbumActivity.class,"中部");
scrollPosition = 1;
}
if (firstVisibleItem == 0) {
toolbar.setSubtitle("顶部");
//AbLogUtil.e(AlbumActivity.class,"顶部");
scrollPosition = 0;
}
}
public void onScrollStateChanged(final AbsListView view, int scrollState) {
switch (scrollState) {
case AbsListView.OnScrollListener.SCROLL_STATE_IDLE:
lastState = AbsListView.OnScrollListener.SCROLL_STATE_IDLE;
this.setTitle("Idle");
//已经显示过了
if(firstVisiblePosition == view.getFirstVisiblePosition()){
return;
}
//已经显示过了
if(lastVisiblePosition == view.getLastVisiblePosition()){
return;
}
//从sroll切换到空闲状态不需要刷新界面
if(lastState == AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL){
return;
}
//当前显示的 从多少到都少
firstVisiblePosition = view.getFirstVisiblePosition();
lastVisiblePosition = view.getLastVisiblePosition();
//可见的数量，从0开始的View
final int count = lastVisiblePosition - firstVisiblePosition + 1;
//AbLogUtil.e("TAG","startPosition:"+startPosition +",endPosition:"+endPosition+",count:"+count);
//当前显示的 从0-count,和scroll 会有重复 已经解决
for (int i = 0; i < count; i++) {
final View item = view.getChildAt(i);
int realPosition = i+firstVisiblePosition;
if(item!=null){
//AbLogUtil.e("TAG","realPosition:"+realPosition);
AlbumGridAdapter.ViewHolder holder = (AlbumGridAdapter.ViewHolder) item.getTag();
adapter.loadImage(realPosition,holder);
}
}
break;
case AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL:
//只能监听到开始滑动的那一次时间，其他的在onScroll中判断
adapter.setFling(false);
lastState = AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL;
this.setTitle("Touch scroll");
break;
case AbsListView.OnScrollListener.SCROLL_STATE_FLING:
adapter.setFling(true);
lastState = AbsListView.OnScrollListener.SCROLL_STATE_FLING;
this.setTitle("Fling");
break;
}
}
}