Android 从 Android 本地图库选择多个图片

<?xmlversion="1.0"encoding="utf-8"?>

<RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent"

android:layout_height="fill_parent">

<ImageView

android:id="@+id/imageView1"

android:layout_width="100dp"

android:layout_height="100dp"

android:src="@drawable/ic_launcher"/>

<CheckBox

android:id="@+id/checkBox1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignRight="@+id/imageView1"

android:layout_centerVertical="true"/>

</RelativeLayout>

<?xmlversion="1.0"encoding="utf-8"?>

<RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent"

android:layout_height="fill_parent">

<GridView

android:id="@+id/gridview"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:layout_above="@+id/button1"

android:columnWidth="100dip"

android:gravity="center"

android:horizontalSpacing="4dip"

android:numColumns="auto_fit"

android:stretchMode="columnWidth"

android:verticalSpacing="2dip"/>

<Button

android:id="@+id/button1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentBottom="true"

android:layout_centerHorizontal="true"

android:onClick="btnChoosePhotosClick"

android:text="SelectPhotos"/>

</RelativeLayout>

publicclassUILApplicationextendsApplication{

@Override

publicvoidonCreate(){

super.onCreate();

//Thisconfigurationtuningiscustom.Youcantuneeveryoption,you

//maytunesomeofthem,

//oryoucancreatedefaultconfigurationby

//ImageLoaderConfiguration.createDefault(this);

//method.

ImageLoaderConfigurationconfig=newImageLoaderConfiguration.Builder(

getApplicationContext())

.threadPoolSize(3)

.threadPriority(Thread.NORM_PRIORITY-2)

.memoryCacheSize(1500000)

//1.5Mb

.denyCacheImageMultipleSizesInMemory()

.discCacheFileNameGenerator(newMd5FileNameGenerator())

.enableLogging()//Notnecessaryincommon

.build();

//InitializeImageLoaderwithconfiguration.

ImageLoader.getInstance().init(config);

}

}

publicabstractclassBaseActivityextendsActivity{

protectedImageLoaderimageLoader=ImageLoader.getInstance();

}

publicclassMainActivityextendsBaseActivity{

privateArrayList<String>imageUrls;

privateDisplayImageOptionsoptions;

privateImageAdapterimageAdapter;

@Override

publicvoidonCreate(BundlesavedInstanceState){

super.onCreate(savedInstanceState);

setContentView(R.layout.ac_image_grid);

initData();

initGallery();

}

privatevoidinitData(){

this.imageUrls=newArrayList<String>();

finalString[]columns={MediaStore.Images.Media.DATA,

MediaStore.Images.Media._ID};

finalStringorderBy=MediaStore.Images.Media.DATE_TAKEN;

Cursorimagecursor=this

.getApplicationContext()

.getContentResolver()

.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,columns,

null,null,orderBy+"DESC");

for(inti=0;i<imagecursor.getCount();i++){

imagecursor.moveToPosition(i);

intdataColumnIndex=imagecursor

.getColumnIndex(MediaStore.Images.Media.DATA);

imageUrls.add(imagecursor.getString(dataColumnIndex));

Log.i("imageUrl",imageUrls.get(i));

}

}

privatevoidinitGallery(){

options=newDisplayImageOptions.Builder()

.showStubImage(R.drawable.stub_image)

.showImageForEmptyUri(R.drawable.image_for_empty_url)

.cacheInMemory().cacheOnDisc().build();

imageAdapter=newImageAdapter(this,imageUrls);

GridViewgridView=(GridView)findViewById(R.id.gridview);

gridView.setAdapter(imageAdapter);

//gridView.setOnItemClickListener(newOnItemClickListener(){

//@Override

//publicvoidonItemClick(AdapterView<?>parent,Viewview,

//intposition,longid){

//startImageGalleryActivity(position);

//}

//});

}

@Override

protectedvoidonStop(){

imageLoader.stop();

super.onStop();

}

publicvoidbtnChoosePhotosClick(Viewv){

ArrayList<String>selectedItems=imageAdapter.getCheckedItems();

Toast.makeText(MainActivity.this,

"Totalphotosselected:"+selectedItems.size(),

Toast.LENGTH_SHORT).show();

Log.d(MainActivity.class.getSimpleName(),"SelectedItems:"

+selectedItems.toString());

}

/**

*DescriptionGridViewAdapter

*/

publicclassImageAdapterextendsBaseAdapter{

ArrayList<String>mList;

LayoutInflatermInflater;

ContextmContext;

SparseBooleanArraymSparseBooleanArray;

publicImageAdapter(Contextcontext,ArrayList<String>imageList){

//TODOAuto-generatedconstructorstub

mContext=context;

mInflater=LayoutInflater.from(mContext);

mSparseBooleanArray=newSparseBooleanArray();

mList=newArrayList<String>();

this.mList=imageList;

}

publicArrayList<String>getCheckedItems(){

ArrayList<String>mTempArry=newArrayList<String>();

for(inti=0;i<mList.size();i++){

if(mSparseBooleanArray.get(i)){

mTempArry.add(mList.get(i));

}

}

returnmTempArry;

}

@Override

publicintgetCount(){

returnimageUrls.size();

}

@Override

publicObjectgetItem(intposition){

returnnull;

}

@Override

publiclonggetItemId(intposition){

returnposition;

}

@Override

publicViewgetView(intposition,ViewconvertView,ViewGroupparent){

if(convertView==null){

convertView=mInflater.inflate(R.layout.row_multiphoto_item,

null);

}

CheckBoxmCheckBox=(CheckBox)convertView

.findViewById(R.id.checkBox1);

finalImageViewimageView=(ImageView)convertView

.findViewById(R.id.imageView1);

imageLoader.displayImage("file://"+imageUrls.get(position),

imageView,options,newSimpleImageLoadingListener(){

@Override

publicvoidonLoadingComplete(BitmaploadedImage){

Animationanim=AnimationUtils.loadAnimation(

MainActivity.this,R.anim.fade_in);

imageView.setAnimation(anim);

anim.start();

}

});

mCheckBox.setTag(position);

mCheckBox.setChecked(mSparseBooleanArray.get(position));

mCheckBox.setOnCheckedChangeListener(mCheckedChangeListener);

returnconvertView;

}

OnCheckedChangeListenermCheckedChangeListener=newOnCheckedChangeListener(){

@Override

publicvoidonCheckedChanged(CompoundButtonbuttonView,

booleanisChecked){

//TODOAuto-generatedmethodstub

mSparseBooleanArray.put((Integer)buttonView.getTag(),

isChecked);

}

};

}

}