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.android.view.leg; import java.util.Hashtable; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.os.Bundle; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.view.ViewGroup.LayoutParams; import android.view.ViewTreeObserver; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.Button; import android.widget.GridView; import android.widget.ImageButton; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; import com.aliyun.android.oss.OSSClient; import com.android.hardcore.crashreport.CrashReportingApplication; import com.example.Images; import com.example.Utils; import com.example.cache.DiskCache; import com.example.cache.ImageCache.ImageCacheParams; import com.example.cache.ImageWorker; import com.example.ui.ImageDetailActivity; import com.free.hardcore.wp9.BuildConfig; import com.free.hardcore.wp9.R; import com.szy.update.UpdateManager; import com.tapjoy.TapjoyAwardPointsNotifier; import com.tapjoy.TapjoyConnect; import com.tapjoy.TapjoyConnectFlag; import com.tapjoy.TapjoyDisplayAdNotifier; import com.tapjoy.TapjoyEarnedPointsNotifier; import com.tapjoy.TapjoyFullScreenAdNotifier; import com.tapjoy.TapjoyNotifier; import com.tapjoy.TapjoySpendPointsNotifier; import com.tapjoy.TapjoyVideoNotifier; /** * The main fragment that powers the ImageGridActivity screen. Fairly straight * forward GridView implementation with the key addition being the ImageWorker * class w/ImageCache to load children asynchronously, keeping the UI nice and * smooth and caching thumbnails for quick retrieval. The cache is retained over * configuration changes like orientation change so the images are populated * quickly as the user rotates the device. */ public class ImageGridForLeg extends Fragment implements AdapterView.OnItemClickListener, TapjoyNotifier, TapjoyFullScreenAdNotifier, TapjoySpendPointsNotifier, TapjoyDisplayAdNotifier, TapjoyAwardPointsNotifier, TapjoyEarnedPointsNotifier, TapjoyVideoNotifier { private static final String TAG = "ImageGridFragment"; private static final String IMAGE_CACHE_DIR = "thumbs"; private int mImageThumbSize; private int mImageThumbSpacing; private ImageAdapter mAdapter; private ImageWorker mImageWorker; public OSSClient mOSSClient; private static final String ACCESS_ID = "lMosX47lTyMFuYRk"; private static final String ACCESS_KEY = "4juWEixwMSgEOnu4fpt79Ja4933W4d"; Button category_finish, category_add_category; UpdateManager manager; public SharedPreferences prefs; /** * Empty constructor as per the Fragment documentation */ public ImageGridForLeg() { } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); mOSSClient = new OSSClient(); mOSSClient.setAccessId(ACCESS_ID); mOSSClient.setAccessKey(ACCESS_KEY); Hashtable<String, String> flags = new Hashtable<String, String>(); flags.put(TapjoyConnectFlag.ENABLE_LOGGING, "false"); TapjoyConnect.requestTapjoyConnect(getActivity(), "8b084d4d-6c47-43db-9690-5ddfa6e74ea5", "mxqcDoBW6s4pG5zJ2QTQ", flags); // TapjoyConnect.requestTapjoyConnect(getActivity(), "bba49f11-b87f-4c0f-9632-21aa810dd6f1", "yiQIURFEeKm0zbOggubu", flags); TapjoyConnect.getTapjoyConnectInstance().enableDisplayAdAutoRefresh(true); TapjoyConnect.getTapjoyConnectInstance().getDisplayAd(this); mImageThumbSize = getResources().getDimensionPixelSize(R.dimen.image_thumbnail_size); mImageThumbSpacing = getResources().getDimensionPixelSize(R.dimen.image_thumbnail_spacing); mAdapter = new ImageAdapter(getActivity(), Images.imageUrls_leg); ImageCacheParams cacheParams = new ImageCacheParams(); cacheParams.reqHeight = mImageThumbSize; cacheParams.reqWidth = mImageThumbSize; // cacheParams.clearDiskCacheOnStart = true; cacheParams.memCacheSize = (1024 * 1024 * Utils.getMemoryClass(getActivity())) / 5; // cacheParams.clearDiskCacheOnStart = true; mImageWorker = ImageWorker.newInstance(getActivity()); mImageWorker.addParams(TAG, cacheParams); mImageWorker.setLoadingImage(R.drawable.empty_photo); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { final View v = inflater.inflate(R.layout.image_grid_fragment, container, false); final GridView mGridView = (GridView) v.findViewById(R.id.gridView); final TextView mTextView = (TextView) v.findViewById(R.id.title_text); mTextView.setText(getString(R.string.main_leg)); ImageButton mImageButton = (ImageButton) v.findViewById(R.id.category_recomment); mImageButton.setVisibility(View.GONE); mImageButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { TapjoyConnect.getTapjoyConnectInstance().showOffers(); } }); mGridView.setAdapter(mAdapter); mGridView.setOnItemClickListener(this); mGridView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { @Override public void onGlobalLayout() { if (mAdapter.getNumColumns() == 0) { final int numColumns = (int) Math .floor(mGridView.getWidth() / (mImageThumbSize + mImageThumbSpacing)); if (numColumns > 0) { final int columnWidth = (mGridView.getWidth() / numColumns) - mImageThumbSpacing; mAdapter.setNumColumns(numColumns); mAdapter.setItemHeight(columnWidth); if (BuildConfig.DEBUG) { } } } } }); return v; } @Override public void onResume() { super.onResume(); // Log.e("ad", "onResume"); mImageWorker.setOnScreen(TAG, true); // mAdapter.notifyDataSetChanged(); } @Override public void onPause() { super.onPause(); // Log.e("ad", "onPause"); mImageWorker.setOnScreen(TAG, false); } @Override public void onItemClick(AdapterView<?> parent, View v, int position, long id) { final Intent i = new Intent(getActivity(), ImageDetailActivityLeg.class); i.putExtra(ImageDetailActivity.EXTRA_IMAGE, (int) id); startActivity(i); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { // inflater.inflate(R.menu.main_menu, menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.clear_cache: DiskCache mDiskCache = DiskCache.openCache(); mDiskCache.clearCache(); Toast.makeText(getActivity(), R.string.clear_cache_complete, Toast.LENGTH_SHORT).show(); return true; } return super.onOptionsItemSelected(item); } /** * The main adapter that backs the GridView. This is fairly standard except * the number of columns in the GridView is used to create a fake top row of * empty views as we use a transparent ActionBar and don't want the real top * row of images to start off covered by it. */ private class ImageAdapter extends BaseAdapter { private final Context mContext; private int mItemHeight = 0; private int mNumColumns = 0; private String[] imageUrls; private GridView.LayoutParams mImageViewLayoutParams; public ImageAdapter(Context context, String[] imageUrls) { super(); mContext = context; this.imageUrls = imageUrls; mImageViewLayoutParams = new GridView.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT); } @Override public int getCount() { // Size of adapter + number of columns for top empty row return imageUrls.length; } @Override public Object getItem(int position) { return imageUrls[position]; } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup container) { // Now handle the main ImageView thumbnails ImageView imageView; if (convertView == null) { // if it's not recycled, instantiate and // initialize imageView = new ImageView(mContext); imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); imageView.setLayoutParams(mImageViewLayoutParams); } else { // Otherwise re-use the converted view imageView = (ImageView) convertView; } // Check the height matches our calculated column width if (imageView.getLayoutParams().height != mItemHeight) { imageView.setLayoutParams(mImageViewLayoutParams); } CrashReportingApplication.mFinalBitmap.display(imageView, imageUrls[position]); // mImageWorker.loadBitmap(imageUrls[position], imageView); return imageView; } /** * Sets the item height. Useful for when we know the column width so the * height can be set to match. * * @param height */ public void setItemHeight(int height) { if (height == mItemHeight) { return; } mItemHeight = height; mImageViewLayoutParams = new GridView.LayoutParams(LayoutParams.MATCH_PARENT, mItemHeight); notifyDataSetChanged(); } public void setNumColumns(int numColumns) { mNumColumns = numColumns; } public int getNumColumns() { return mNumColumns; } } @Override public void videoComplete() { // TODO Auto-generated method stub } @Override public void videoError(int arg0) { // TODO Auto-generated method stub } @Override public void videoStart() { // TODO Auto-generated method stub } @Override public void earnedTapPoints(int arg0) { // TODO Auto-generated method stub } @Override public void getAwardPointsResponse(String arg0, int arg1) { // TODO Auto-generated method stub } @Override public void getAwardPointsResponseFailed(String arg0) { // TODO Auto-generated method stub } @Override public void getDisplayAdResponse(View arg0) { // TODO Auto-generated method stub } @Override public void getDisplayAdResponseFailed(String arg0) { // TODO Auto-generated method stub } @Override public void getSpendPointsResponse(String arg0, int arg1) { // TODO Auto-generated method stub } @Override public void getSpendPointsResponseFailed(String arg0) { // TODO Auto-generated method stub } @Override public void getFullScreenAdResponse() { // TODO Auto-generated method stub } @Override public void getFullScreenAdResponseFailed(int arg0) { // TODO Auto-generated method stub } @Override public void getUpdatePoints(String arg0, int arg1) { // TODO Auto-generated method stub } @Override public void getUpdatePointsFailed(String arg0) { // TODO Auto-generated method stub } }