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我正在編寫代碼以從圖庫中選擇圖像，然後在網格視圖中顯示它們。我已經完成了代碼，直到允許用戶從圖庫中選擇圖像。現在我需要幫助來進一步移動並在單獨的網格視圖中顯示選定的圖像。在這裏，我將我的代碼附加到我所做的事情上。提前感謝。在從圖庫中選擇後在網格視圖中顯示圖像
MultiPhotoSelectActivity.java
package com.mamakar.gridviewimplementation;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
import android.util.SparseBooleanArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.Toast;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
import com.nostra13.universalimageloader.core.assist.SimpleImageLoadingListener;
import java.util.ArrayList;
/**
* @author Paresh Mayani (@pareshmayani)
*/
public class MultiPhotoSelectActivity extends BaseActivity {
private ArrayList<String> imageUrls;
private DisplayImageOptions options;
private ImageAdapter imageAdapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.ac_image_grid);
//Bundle bundle = getIntent().getExtras();
//imageUrls = bundle.getStringArray(Extra.IMAGES);
final String[] columns = { MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID };
final String orderBy = MediaStore.Images.Media.DATE_TAKEN;
Cursor imagecursor = managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null,
null, orderBy + " DESC");
//MultiPhotoSelectActivity.imageLoader.init(ImageLoaderConfiguration.createDefault(getBaseContext()));
ImageLoader.getInstance().init(ImageLoaderConfiguration.createDefault(MultiPhotoSelectActivity.this));
this.imageUrls = new ArrayList<String>();
for (int i = 0; i < imagecursor.getCount(); i++) {
imagecursor.moveToPosition(i);
int dataColumnIndex = imagecursor.getColumnIndex(MediaStore.Images.Media.DATA);
imageUrls.add(imagecursor.getString(dataColumnIndex));
System.out.println("=====> Array path => "+imageUrls.get(i));
}
options = new DisplayImageOptions.Builder()
.showStubImage(R.drawable.stub_image)
.showImageForEmptyUri(R.drawable.image_for_empty_url)
.cacheInMemory()
.cacheOnDisc()
.build();
imageAdapter = new ImageAdapter(this, imageUrls);
GridView gridView = (GridView) findViewById(R.id.gridview);
gridView.setAdapter(imageAdapter);
/*gridView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
startImageGalleryActivity(position);
}
});*/
}
@Override
protected void onStop() {
imageLoader.stop();
super.onStop();
}
public void btnChoosePhotosClick(View v){
ArrayList<String> selectedItems = imageAdapter.getCheckedItems();
Toast.makeText(MultiPhotoSelectActivity.this, "Total photos selected: "+selectedItems.size(), Toast.LENGTH_SHORT).show();
Log.d(MultiPhotoSelectActivity.class.getSimpleName(), "Selected Items: " + selectedItems.toString());
}
/*private void startImageGalleryActivity(int position) {
Intent intent = new Intent(this, ImagePagerActivity.class);
intent.putExtra(Extra.IMAGES, imageUrls);
intent.putExtra(Extra.IMAGE_POSITION, position);
startActivity(intent);
}*/
public class ImageAdapter extends BaseAdapter {
ArrayList<String> mList;
LayoutInflater mInflater;
Context mContext;
SparseBooleanArray mSparseBooleanArray;
public ImageAdapter(Context context, ArrayList<String> imageList) {
// TODO Auto-generated constructor stub
mContext = context;
mInflater = LayoutInflater.from(mContext);
mSparseBooleanArray = new SparseBooleanArray();
mList = new ArrayList<String>();
this.mList = imageList;
}
public ArrayList<String> getCheckedItems() {
ArrayList<String> mTempArry = new ArrayList<String>();
for(int i=0;i<mList.size();i++) {
if(mSparseBooleanArray.get(i)) {
mTempArry.add(mList.get(i));
}
}
return mTempArry;
}
@Override
public int getCount() {
return imageUrls.size();
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if(convertView == null) {
convertView = mInflater.inflate(R.layout.row_multiphoto_item, null);
}
CheckBox mCheckBox = (CheckBox) convertView.findViewById(R.id.checkBox1);
final ImageView imageView = (ImageView) convertView.findViewById(R.id.imageView1);
imageLoader.displayImage("file://"+imageUrls.get(position), imageView, options, new SimpleImageLoadingListener() {
@Override
public void onLoadingComplete(Bitmap loadedImage) {
Animation anim = AnimationUtils.loadAnimation(MultiPhotoSelectActivity.this, R.anim.fade_in);
imageView.setAnimation(anim);
anim.start();
}
});
mCheckBox.setTag(position);
mCheckBox.setChecked(mSparseBooleanArray.get(position));
mCheckBox.setOnCheckedChangeListener(mCheckedChangeListener);
return convertView;
}
OnCheckedChangeListener mCheckedChangeListener = new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
mSparseBooleanArray.put((Integer) buttonView.getTag(), isChecked);
}
};
}
}
BaseActivity.java
package com.mamakar.gridviewimplementation;
import android.app.Activity;
import com.nostra13.universalimageloader.core.ImageLoader;
/**
* @author Paresh Mayani (@pareshmayani)
*/
public abstract class BaseActivity extends Activity {
protected ImageLoader imageLoader = ImageLoader.getInstance();
}
UILApplication.java
package com.mamakar.gridviewimplementation;
import android.app.Application;
import com.nostra13.universalimageloader.cache.disc.naming.Md5FileNameGenerator;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
/**
* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
*/
public class UILApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
// This configuration tuning is custom. You can tune every option, you may tune some of them,
// or you can create default configuration by
// ImageLoaderConfiguration.createDefault(this);
// method.
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(getApplicationContext())
.threadPoolSize(3)
.threadPriority(Thread.NORM_PRIORITY - 2)
.memoryCacheSize(1500000) // 1.5 Mb
.denyCacheImageMultipleSizesInMemory()
.discCacheFileNameGenerator(new Md5FileNameGenerator())
.enableLogging() // Not necessary in common
.build();
// Initialize ImageLoader with configuration.
ImageLoader.getInstance().init(config);
// BaseActivity.imageLoader.init(ImageLoaderConfiguration.createDefault(getBaseContext()));
}
}
ac_image_grid.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns: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:columnWidth="100dip"
android:gravity="center"
android:horizontalSpacing="4dip"
android:numColumns="auto_fit"
android:stretchMode="columnWidth"
android:layout_above="@+id/button1"
android:verticalSpacing="2dip" />
<Button
android:id="@+id/button1"
android:layout_alignParentBottom="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:onClick="btnChoosePhotosClick"
android:text="Select Photos" />
</RelativeLayout>
row_multiphoto_item.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns: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="@mipmap/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"/>
謝謝，它完全有助於我所需。 –