android 从相册选择图片_android调用相册并显示图片

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public class MainActivity extendsAppCompatActivity {int REQUEST_CODE = 0;privateNineGridImageView ngiv;private ArrayListphotos;privateDialog dialog;privatecn.com.jwtimes.www.jwtimes.mAdapter mAdapter1;

@Overrideprotected voidonCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

TextView tv=findViewById(R.id.tv);

ngiv=findViewById(R.id.ngiv);

tv.setOnClickListener(newView.OnClickListener() {

@Overridepublic voidonClick(View v) {

PhotoPickerIntent intent= new PhotoPickerIntent(MainActivity.this);

intent.setPhotoCount(9);

intent.setShowCamera(true);

startActivityForResult(intent, REQUEST_CODE);

}

});

}

@Overrideprotected void onActivityResult(int requestCode, intresultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (resultCode == RESULT_OK && requestCode ==REQUEST_CODE) {if (data != null) {

photos=data.getStringArrayListExtra(PhotoPickerActivity.KEY_SELECTED_PHOTOS);

ngiv.setAdapter(mAdapter);

ngiv.setImagesData(photos);

}

}

}private NineGridImageViewAdapter mAdapter = new NineGridImageViewAdapter() {

@Overrideprotected void onDisplayImage(Context context, ImageView imageView, finalString url) {

Glide.with(context)

.load(url)

.into(imageView);

}

@OverrideprotectedImageView generateImageView(Context context) {return super.generateImageView(context);

}

@Overrideprotected void onItemImageClick(Context context, int index, ListphotoList) {

showBigPicture(context, photos, index);

}

};private void showBigPicture(Context context, final ArrayList photos, final intindex) {

dialog= newDialog(context, R.style.MyDialog);

View contentView= View.inflate(context, R.layout.dialog_tip, null);final ViewPager vp =(ViewPager) contentView.findViewById(R.id.vp);

ImageView ivDelete=(ImageView) contentView.findViewById(R.id.ivDelete);

mAdapter1= new mAdapter(this, photos, dialog);

vp.setAdapter(mAdapter1);

vp.setCurrentItem(index);

ivDelete.setOnClickListener(newView.OnClickListener() {

@Overridepublic voidonClick(View v) {int currentItem =vp.getCurrentItem();

Iterator sListIterator =photos.iterator();while(sListIterator.hasNext()) {

String e=sListIterator.next();if(e.equals(photos.get(currentItem))) {

sListIterator.remove();

mAdapter1.notifyDataSetChanged();break;

}

}

}

});

dialog.setOnDismissListener(newDialogInterface.OnDismissListener() {

@Overridepublic voidonDismiss(DialogInterface dialog) {

ngiv.setAdapter(MainActivity.this.mAdapter);

ngiv.setImagesData(photos);

}

});

dialog.setContentView(contentView);

dialog.setCancelable(true);

dialog.getWindow().setLayout(

getScreenWidth(),

getScreenHeight());

dialog.show();

}public intgetScreenWidth() {

Resources resources=getResources();returnresources.getDisplayMetrics().widthPixels;

}public intgetScreenHeight() {

Resources resources=getResources();returnresources.getDisplayMetrics().heightPixels;

}

}

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