Java tutorial
/* * Copyright (C) 2012 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.fbbackup; import java.io.File; import util.DownloadSinglePicTask; import util.ImageCache; import util.ImageFetcher; import util.Utils; import android.annotation.TargetApi; import android.content.Context; import android.content.Intent; import android.content.pm.PackageManager; import android.media.MediaScannerConnection; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentStatePagerAdapter; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.text.ClipboardManager; import android.util.DisplayMetrics; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.widget.Button; import android.widget.ImageButton; import android.widget.TextView; public class ImageDetailActivity extends FragmentActivity implements OnClickListener { private static final String IMAGE_CACHE_DIR = "images"; public static final String EXTRA_IMAGE = "extra_image"; private ImagePagerAdapter mAdapter; private ImageFetcher mImageFetcher; private ViewPager mPager; private String photoArray[]; private String albumName; private String name; private Button btn_share; private ImageButton btn_download_photo; private TextView tx_album_name; // OIXpos private int img_pos = 0; private String clipBoardText = ""; private String extStorageDirectory; @TargetApi(11) @Override public void onCreate(Bundle savedInstanceState) { if (BuildConfig.DEBUG) { Utils.enableStrictMode(); } super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.image_detail_pager); extStorageDirectory = Environment.getExternalStorageDirectory().toString(); // Fetch screen height and width, to use as our max size when loading // images as this // activity runs full screen final DisplayMetrics displayMetrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(displayMetrics); final int height = displayMetrics.heightPixels; final int width = displayMetrics.widthPixels; photoArray = getIntent().getExtras().getStringArray("photo"); albumName = getIntent().getExtras().getString("albumName"); img_pos = getIntent().getExtras().getInt("albumPosition"); name = getIntent().getExtras().getString("userName"); setView(); setListener(); // For this sample we'll use half of the longest width to resize our // images. As the // image scaling ensures the image is larger than this, we should be // left with a // resolution that is appropriate for both portrait and landscape. For // best image quality // we shouldn't divide by 2, but this will use more memory and require a // larger memory // cache. final int longest = (height > width ? height : width) / 2; Log.w("testSize", "longest:" + longest); ImageCache.ImageCacheParams cacheParams = new ImageCache.ImageCacheParams(this, IMAGE_CACHE_DIR); cacheParams.setMemCacheSizePercent(0.25f); // Set memory cache to 25% of // app memory // The ImageFetcher takes care of loading images into our ImageView // children asynchronously mImageFetcher = new ImageFetcher(this, longest); mImageFetcher.addImageCache(getSupportFragmentManager(), cacheParams); mImageFetcher.setImageFadeIn(false); // Set up ViewPager and backing adapter mAdapter = new ImagePagerAdapter(getSupportFragmentManager(), photoArray.length); mPager = (ViewPager) findViewById(R.id.pager); mPager.setAdapter(mAdapter); mPager.setPageMargin((int) getResources().getDimension(R.dimen.image_detail_pager_margin)); mPager.setOffscreenPageLimit(2); mPager.setOnPageChangeListener(new MyOnPageChangeListener()); // Set up activity to go full screen // getWindow().addFlags(LayoutParams.FLAG_FULLSCREEN); // Enable some additional newer visibility and ActionBar features to // create a more // immersive photo viewing experience // if (Utils.hasHoneycomb()) { // final ActionBar actionBar = getActionBar(); // // // Hide title text and set home as up // actionBar.setDisplayShowTitleEnabled(false); // actionBar.setDisplayHomeAsUpEnabled(true); // // // Hide and show the ActionBar as the visibility changes // mPager.setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() { // @Override // public void onSystemUiVisibilityChange(int vis) { // if ((vis & View.SYSTEM_UI_FLAG_LOW_PROFILE) != 0) { // actionBar.hide(); // } else { // actionBar.show(); // } // } // }); // // // Start low profile mode and hide ActionBar // mPager.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE); // actionBar.hide(); // } // Set the current item based on the extra passed in to this activity final int extraCurrentItem = getIntent().getIntExtra(EXTRA_IMAGE, -1); if (extraCurrentItem != -1) { mPager.setCurrentItem(extraCurrentItem); } } private void setView() { btn_download_photo = (ImageButton) findViewById(R.id.btn_download_photo); btn_share = (Button) findViewById(R.id.btn_share); tx_album_name = (TextView) findViewById(R.id.tx_album_name); tx_album_name.setText(albumName); } private void setListener() { btn_share.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub // Gets a handle to the clipboard service. ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE); clipboard.setText(clipBoardText); PackageManager pm = getPackageManager(); Intent intent = pm.getLaunchIntentForPackage("jp.naver.line.android"); File file = new File(extStorageDirectory + "/DCIM/FBBackup/test.jpg"); Uri outputFileUri = Uri.fromFile(file); String[] path = { extStorageDirectory + "/DCIM/FBBackup/test.jpg" }; // MediaScannerConnection.scanFile(this, path, null, // new MediaScannerConnection.OnScanCompletedListener() { // public void onScanCompleted(String path, Uri uri) { // Log.i("ExternalStorage", "Scanned " + path + ":"); // Log.i("ExternalStorage", "-> uri=" + uri); // } // }); MediaScannerConnection.scanFile(getApplicationContext(), path, null, null); Log.w("RyanWang", outputFileUri.getPath()); intent.setAction(Intent.ACTION_SEND); intent.putExtra(Intent.EXTRA_STREAM, outputFileUri); intent.setType("image/jpeg"); startActivity(intent); } }); btn_download_photo.setOnClickListener(new ImageButton.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub DownloadSinglePicTask download = new DownloadSinglePicTask(); download.setContext(ImageDetailActivity.this); download.setAlbunPhotoUrl(clipBoardText); Log.w("downloadpic", "ImageDetail albumName:" + albumName); download.setPath( extStorageDirectory + "/DCIM/FBBackup/" + name + "/" + Utils.getDirName(albumName) + "/"); download.execute("test"); } }); } @Override public void onResume() { super.onResume(); mImageFetcher.setExitTasksEarly(false); } @Override protected void onPause() { super.onPause(); mImageFetcher.setExitTasksEarly(true); mImageFetcher.flushCache(); } @Override protected void onDestroy() { super.onDestroy(); mImageFetcher.closeCache(); } public class MyOnPageChangeListener implements OnPageChangeListener { @Override public void onPageSelected(int position) { ImageDetailFragment.setUrl(photoArray[position]); clipBoardText = photoArray[position]; Log.w("pos", "pageListener:" + position); } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { } @Override public void onPageScrollStateChanged(int arg0) { } } // @Override // public boolean onOptionsItemSelected(MenuItem item) { // switch (item.getItemId()) { // case android.R.id.home: // NavUtils.navigateUpFromSameTask(this); // return true; // case R.id.clear_cache: // mImageFetcher.clearCache(); // Toast.makeText( // this, R.string.clear_cache_complete_toast,Toast.LENGTH_SHORT).show(); // return true; // } // return super.onOptionsItemSelected(item); // } // // @Override // public boolean onCreateOptionsMenu(Menu menu) { // getMenuInflater().inflate(R.menu.main_menu, menu); // return true; // } /** * Called by the ViewPager child fragments to load images via the one * ImageFetcher */ public ImageFetcher getImageFetcher() { return mImageFetcher; } /** * The main adapter that backs the ViewPager. A subclass of * FragmentStatePagerAdapter as there could be a large number of items in * the ViewPager and we don't want to retain them all in memory at once but * create/destroy them on the fly. */ private class ImagePagerAdapter extends FragmentStatePagerAdapter { private final int mSize; public ImagePagerAdapter(FragmentManager fm, int size) { super(fm); mSize = size; ImageDetailFragment.setAlbumName(albumName); ImageDetailFragment.setUrl(photoArray[img_pos]); clipBoardText = photoArray[img_pos]; } @Override public int getCount() { return mSize; } @Override public Fragment getItem(int position) { // ImageDetailFragment.setUrl(photoArray[position]); Log.w("pos", "getItem:" + position); // clipBoardText=photoArray[position]; return ImageDetailFragment.newInstance(photoArray[position]); } } /** * Set on the ImageView in the ViewPager children fragments, to * enable/disable low profile mode when the ImageView is touched. */ @TargetApi(11) @Override public void onClick(View v) { final int vis = mPager.getSystemUiVisibility(); if ((vis & View.SYSTEM_UI_FLAG_LOW_PROFILE) != 0) { mPager.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE); } else { mPager.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE); } } }