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ImagePickerActivity.java
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ImagePickerActivity.java
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package com.giljulio.imagepicker.ui;
import android.app.Activity;
import android.app.ActionBar;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v13.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.giljulio.imagepicker.R;
import com.giljulio.imagepicker.model.Image;
import com.giljulio.imagepicker.utils.ImageInternalFetcher;
import java.util.HashSet;
import java.util.Locale;
import java.util.Set;
public class ImagePickerActivity extends Activity implements ActionBar.TabListener, View.OnClickListener {
private static final String TAG = ImagePickerActivity.class.getSimpleName();
public static final String TAG_IMAGE_URI = "TAG_IMAGE_URI";
private Set<Image> mSelectedImages;
private LinearLayout mSelectedImagesContainer;
private FrameLayout mFrameLayout;
private TextView mSelectedImageEmptyMessage;
private SectionsPagerAdapter mSectionsPagerAdapter;
private ViewPager mViewPager;
public ImageInternalFetcher mImageFetcher;
private Button mCancelButtonView, mDoneButtonView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mSelectedImagesContainer = (LinearLayout) findViewById(R.id.selected_photos_container);
mSelectedImageEmptyMessage = (TextView)findViewById(R.id.selected_photos_empty);
mFrameLayout = (FrameLayout) findViewById(R.id.selected_photos_container_frame);
mViewPager = (ViewPager) findViewById(R.id.pager);
mCancelButtonView = (Button) findViewById(R.id.action_btn_cancel);
mDoneButtonView = (Button) findViewById(R.id.action_btn_done);
mSelectedImages = new HashSet<Image>();
mImageFetcher = new ImageInternalFetcher(this, 500);
mSectionsPagerAdapter = new SectionsPagerAdapter(getFragmentManager());
mViewPager.setAdapter(mSectionsPagerAdapter);
mCancelButtonView.setOnClickListener(this);
mDoneButtonView.setOnClickListener(this);
setupActionBar();
}
/**
* Sets up the action bar, adding view page indicator
*/
private void setupActionBar(){
final ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
actionBar.setDisplayShowHomeEnabled(false);
actionBar.setDisplayShowTitleEnabled(false);
mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
@Override
public void onPageSelected(int position) {
actionBar.setSelectedNavigationItem(position);
}
});
for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
actionBar.addTab(actionBar.newTab().setText(mSectionsPagerAdapter.getPageTitle(i)).setTabListener(this));
}
}
public boolean addImage(Image image) {
if(mSelectedImages.add(image)){
View rootView = LayoutInflater.from(ImagePickerActivity.this).inflate(R.layout.list_item_selected_thumbnail, null);
ImageView thumbnail = (ImageView)rootView.findViewById(R.id.selected_photo);
rootView.setTag(image.mUri);
mImageFetcher.loadImage(image.mUri, thumbnail);
mSelectedImagesContainer.addView(rootView, 0);
int px = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 60,
getResources().getDisplayMetrics());
thumbnail.setLayoutParams(new FrameLayout.LayoutParams(px, px));
if(mSelectedImages.size() == 1){
mSelectedImagesContainer.setVisibility(View.VISIBLE);
mSelectedImageEmptyMessage.setVisibility(View.GONE);
}
return true;
}
return false;
}
public boolean removeImage(Image image) {
if(mSelectedImages.remove(image)){
for(int i = 0; i < mSelectedImagesContainer.getChildCount(); i++){
View childView = mSelectedImagesContainer.getChildAt(i);
if(childView.getTag().equals(image.mUri)){
mSelectedImagesContainer.removeViewAt(i);
break;
}
}
if(mSelectedImages.size() == 0){
mSelectedImagesContainer.setVisibility(View.GONE);
mSelectedImageEmptyMessage.setVisibility(View.VISIBLE);
}
return true;
}
return false;
}
public boolean containsImage(Image image){
return mSelectedImages.contains(image);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
mViewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
}
@Override
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
}
@Override
public void onClick(View view) {
//cannot use switch statement since ADT 14 -.-
if(view.getId() == R.id.action_btn_done){
Uri[] uris = new Uri[mSelectedImages.size()];
int i = 0;
for(Image img : mSelectedImages)
uris[i++] = img.mUri;
Intent intent = new Intent();
intent.putExtra(TAG_IMAGE_URI, uris);
setResult(Activity.RESULT_OK, intent);
} else if(view.getId() == R.id.action_btn_cancel){
setResult(Activity.RESULT_CANCELED);
}
finish();
}
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a PlaceholderFragment (defined as a static inner class below).
switch(position){
case 0:
return new CameraFragment();
case 1:
return new GalleryFragment();
default:
return null;
}
}
@Override
public int getCount() {
return 2;
}
@Override
public CharSequence getPageTitle(int position) {
Locale l = Locale.getDefault();
switch (position) {
case 0:
return "Take a photo";//getString(R.string.title_section1).toUpperCase(l);
case 1:
return "Gallery";//getString(R.string.title_section2).toUpperCase(l);
}
return null;
}
}
}