【转】android中最好的瀑布流控件PinterestLikeAdapterView

<?xml version=

"1.0"

encoding=

"utf-8"

?>

<merge xmlns:android=

"http://schemas.android.com/apk/res/android"

android:layout_width=

"match_parent"

android:layout_height=

"match_parent"

android:background=

"#000000"

>

<com.huewu.pla.lib.MultiColumnListView

xmlns:pla=

"http://schemas.android.com/apk/res-auto"

android:background=

"#000000"

android:id=

"@+id/list"

android:layout_width=

"match_parent"

android:layout_height=

"match_parent"

pla:plaColumnNumber=

"3"

pla:plaLandscapeColumnNumber=

"3"

>

</com.huewu.pla.lib.MultiColumnListView>

</merge>

package com.huewu.pla.sample;

import android.annotation.SuppressLint;

import android.app.Activity;

import android.content.Context;

import android.content.Intent;

import android.database.Cursor;

import android.net.Uri;

import android.os.Bundle;

import android.provider.MediaStore.Images;

import android.view.Menu;

import com.huewu.pla.R;

import com.huewu.pla.lib.MultiColumnListView;

import java.util.ArrayList;

public class SampleActivity extends Activity {

private MultiColumnListView mAdapterView =

null

;

private ArrayList<String> imageUrls;

private ImageGridAdapter adapter;

@Override

protected void onCreate(Bundle savedInstanceState) {

super

.onCreate(savedInstanceState);

setContentView(R.layout.sample_act);

//mAdapterView = (PLA_AdapterView<Adapter>) findViewById(R.id.list);

mAdapterView = (MultiColumnListView) findViewById(R.id.list);

imageUrls =

new

ArrayList<String>();

adapter =

new

ImageGridAdapter(

this

,imageUrls);

mAdapterView.setAdapter(adapter);

queryMediaImages();

}

public void queryMediaImages() {

Cursor c =getContentResolver().query( Images.Media.EXTERNAL_CONTENT_URI,

null

,

null

,

null

,

null

);

if

( c !=

null

) {

if

(c.moveToFirst()) {

do

{ 

long id = c.getLong( c.getColumnIndex( Images.Media._ID ) );

Uri imageUri = Uri.parse( Images.Media.EXTERNAL_CONTENT_URI +

"/"

+ id );

imageUrls.add(imageUri.toString());

//imageUrls.add(getRealFilePath(MainActivity.this,imageUri));

}

while

(c.moveToNext()); 

}

}

c.close();

c =

null

;

adapter.notifyDataSetChanged();

}

}

//end of class

package com.huewu.pla.sample;

import java.util.ArrayList;

import com.example.staggeredgridviewdemo.views.ScaleImageView;

import com.huewu.pla.R;

import com.jcodecraeer.imageloader.ImageLoader;

import android.content.Context;

import android.util.DisplayMetrics;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.view.ViewGroup.LayoutParams;

import android.view.WindowManager;

import android.widget.AbsListView;

import android.widget.AbsListView.OnScrollListener;

import android.widget.BaseAdapter;

import android.widget.GridView;

import android.widget.ImageView;

public class ImageGridAdapter extends BaseAdapter{

private static final String TAG =

"ImageGridAdapter"

;

private static final boolean DEBUG =

true

;

private ImageLoader mLoader;

private ArrayList<String> mImageList;

private LayoutInflater mLayoutInflater;

public ImageGridAdapter(Context context,

ArrayList<String> list) {

mLoader =

new

ImageLoader(context);

mLoader.setIsUseMediaStoreThumbnails(

false

);

mImageList = list;

WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);

int width = wm.getDefaultDisplay().getWidth();

//屏幕宽度

mLoader.setRequiredSize(width / 3);

//3表示列数

mLayoutInflater = LayoutInflater.from(context);

}

public int getCount() {

return

mImageList.size();

}

public Object getItem(int arg0) {

return

null

;

}

public long getItemId(int arg0) {

return

0;

}

@Override

public View getView(final int position,View convertView,ViewGroup parent) {

if

(DEBUG)

Log.i(TAG,

"position = "

+ position);

ViewHolder holder =

null

;

if

(convertView ==

null

) {

convertView = mLayoutInflater.inflate(R.layout.item_image,

null

);

holder =

new

ViewHolder();

holder.imageView = (ScaleImageView) convertView .findViewById(R.id.imageView);

convertView.setTag(holder);

}

holder =(ViewHolder) convertView.getTag();

mLoader.DisplayImage(mImageList.get(position),holder.imageView);

return

convertView;

}

static class ViewHolder {

ScaleImageView imageView;

}

}

<?xml version=

"1.0"

encoding=

"utf-8"

?>

<LinearLayout xmlns:android=

"http://schemas.android.com/apk/res/android"

android:layout_width=

"fill_parent"

android:layout_height=

"wrap_content"

android:padding=

"1dip"

>

<com.example.staggeredgridviewdemo.views.ScaleImageView

android:id=

"@+id/imageView"

android:layout_width=

"wrap_content"

android:layout_height=

"wrap_content"

android:scaleType=

"fitXY"

android:src=

"@null"

/>

</LinearLayout>