package com.camnter.newlife.ui.activity.lrucache;
import android.annotation.TargetApi;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import butterknife.BindView;
import butterknife.ButterKnife;
import com.camnter.newlife.R;
import com.camnter.newlife.core.activity.BaseAppCompatActivity;
import com.camnter.newlife.utils.cache.LruCache;
import java.math.BigDecimal;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Locale;
import java.util.Map;
/**
* Description：LruCacheActivity
* Created by：CaMnter
* Time：2016-04-21 20:48
*/
@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR1) public class LruCacheActivity
extends BaseAppCompatActivity implements View.OnClickListener {
private static final String LRU_CACHE_ENTRY_REMOVED_NULL_FORMAT = "entryRemoved:";
private static final String LRU_CACHE_RECENT_FORMAT = "Recent visit:%s";
private static final String LRU_CACHE_CACHE_DATA_FORMAT = "Cache data:%s";
private static final String LRU_CACHE_ENTRY_REMOVED_INFO_FORMAT
= "entryRemoved:\nevicted: %1$s\nkey: %2$s\noldValue: %3$s\nnewValue: %4$s";
private static final float ONE_MIB = 1024 * 1024;
// 7MB
private static final int CACHE_SIZE = (int) (7 * ONE_MIB);
private final Map<Bitmap, String> bitmap2Key = new HashMap<>();
private final List<String> recentList = new LinkedList<>();
private final List<String> cacheList = new LinkedList<>();
@BindView(R.id.camnter_size_text) TextView mCamnterSizeText;
@BindView(R.id.camnter_count_text) TextView mCamnterCountText;
@BindView(R.id.drakeet_size_text) TextView mDrakeetSizeText;
@BindView(R.id.drakeet_count_text) TextView mDrakeetCountText;
@BindView(R.id.ka_size_text) TextView mKaSizeText;
@BindView(R.id.ka_count_text) TextView mKaCountText;
@BindView(R.id.peter_size_text) TextView mPeterSizeText;
@BindView(R.id.entryRemoved_info_text) TextView mEntryRemovedInfoText;
@BindView(R.id.get_one) Button mGetOne;
@BindView(R.id.get_two) Button mGetTwo;
@BindView(R.id.get_three) Button mGetThree;
@BindView(R.id.clear_remove_info) Button mClearRemoveInfo;
@BindView(R.id.put_four) Button mPutFour;
@BindView(R.id.camnter_hashCode_text) TextView mCamnterHashCodeText;
@BindView(R.id.drakeet_hashCode_text) TextView mDrakeetHashCodeText;
@BindView(R.id.ka_hashCode_text) TextView mKaHashCodeText;
@BindView(R.id.peter_hashCode_text) TextView mPeterHashCodeText;
@BindView(R.id.recent_info_text) TextView mRecentInfoText;
@BindView(R.id.cache_data_text) TextView mCacheDataText;
private LruCache<String, Bitmap> bitmapCache;
private Bitmap camnterBitmap;
private Bitmap drakeetBitmap;
private Bitmap kaBitmap;
private Bitmap peterBitmap;
private int camnterCount = 0;
private int drakeetCount = 0;
private int kaCount = 0;
/**
* Fill in layout id
*
* @return layout id
*/
@Override protected int getLayoutId() {
return R.layout.activity_lrucache;
}
/**
* Initialize the view in the layout
*
* @param savedInstanceState savedInstanceState
*/
@Override protected void initViews(Bundle savedInstanceState) {
ButterKnife.bind(this);
}
private void initBitmapAndText() {
this.camnterBitmap = BitmapFactory.decodeResource(this.getResources(),
R.drawable.ic_camnter);
this.drakeetBitmap = BitmapFactory.decodeResource(this.getResources(),
R.drawable.ic_drakeet);
this.kaBitmap = BitmapFactory.decodeResource(this.getResources(),
R.drawable.ic_kaede_akatsuki);
this.peterBitmap = BitmapFactory.decodeResource(this.getResources(),
R.drawable.ic_peter_cai);
this.bitmap2Key.put(this.camnterBitmap, "<1>");
this.bitmap2Key.put(this.drakeetBitmap, "<2>");
this.bitmap2Key.put(this.kaBitmap, "<3>");
this.bitmap2Key.put(this.peterBitmap, "<4>");
this.mCamnterSizeText.setText(this.getString(R.string.lru_cache_size_format,
new BigDecimal(this.camnterBitmap.getByteCount() / ONE_MIB).setScale(2,
BigDecimal.ROUND_HALF_UP).toString()));
this.mDrakeetSizeText.setText(this.getString(R.string.lru_cache_size_format,
new BigDecimal(this.drakeetBitmap.getByteCount() / ONE_MIB).setScale(2,
BigDecimal.ROUND_HALF_UP).toString()));
this.mKaSizeText.setText(this.getString(R.string.lru_cache_size_format,
new BigDecimal(this.kaBitmap.getByteCount() / ONE_MIB).setScale(2,
BigDecimal.ROUND_HALF_UP).toString()));
this.mPeterSizeText.setText(this.getString(R.string.lru_cache_size_format,
new BigDecimal(this.peterBitmap.getByteCount() / ONE_MIB).setScale(2,
BigDecimal.ROUND_HALF_UP).toString()));
this.mCamnterCountText.setText(
this.getString(R.string.lru_cache_count_format, this.camnterCount));
this.mDrakeetCountText.setText(
this.getString(R.string.lru_cache_count_format, this.drakeetCount));
this.mKaCountText.setText(this.getString(R.string.lru_cache_count_format, this.kaCount));
this.mCamnterHashCodeText.setText(
this.getString(R.string.lru_cache_hashcode_format, this.camnterBitmap.hashCode()));
this.mDrakeetHashCodeText.setText(
this.getString(R.string.lru_cache_hashcode_format, this.drakeetBitmap.hashCode()));
this.mKaHashCodeText.setText(
this.getString(R.string.lru_cache_hashcode_format, this.kaBitmap.hashCode()));
this.mPeterHashCodeText.setText(
this.getString(R.string.lru_cache_hashcode_format, this.peterBitmap.hashCode()));
this.mEntryRemovedInfoText.setText(LRU_CACHE_ENTRY_REMOVED_NULL_FORMAT);
this.mRecentInfoText.setText(
String.format(Locale.getDefault(), LRU_CACHE_RECENT_FORMAT, ""));
}
private void initCache() {
this.bitmapCache = new LruCache<String, Bitmap>(CACHE_SIZE) {
protected int sizeOf(String key, Bitmap value) {
return value.getByteCount();
}
/**
* 1.当被回收或者删掉时调用。该方法当value被回收释放存储空间时被remove调用
* 或者替换条目值时put调用，默认实现什么都没做。
* 2.该方法没用同步调用，如果其他线程访问缓存时，该方法也会执行。
* 3.evicted=true：如果该条目被删除空间 （表示 进行了trimToSize or remove） evicted=false：put冲突后 或 get里成功create后 导致
* 4.newValue!=null，那么则被put()或get()调用。
*/
@Override
protected void entryRemoved(boolean evicted, String key, Bitmap oldValue, Bitmap newValue) {
mEntryRemovedInfoText.setText(
String.format(Locale.getDefault(), LRU_CACHE_ENTRY_REMOVED_INFO_FORMAT,
evicted, key, oldValue != null ? oldValue.hashCode() : "null",
newValue != null ? newValue.hashCode() : "null"));
// 见上述 3.
if (evicted) {
// 进行了trimToSize or remove (一般是溢出了 或 key-value被删除了 )
if (recentList.contains(key)) {
recentList.remove(key);
refreshText(mRecentInfoText, LRU_CACHE_RECENT_FORMAT, recentList);
}
} else {
// put冲突后 或 get里成功create 后
recentList.remove(key);
refreshText(mRecentInfoText, LRU_CACHE_RECENT_FORMAT, recentList);
}
if (cacheList.contains(key)) {
cacheList.remove(key);
refreshText(mCacheDataText, LRU_CACHE_CACHE_DATA_FORMAT, cacheList);
}
}
};
this.bitmapCache.put(this.bitmap2Key.get(this.camnterBitmap), this.camnterBitmap);
this.bitmapCache.put(this.bitmap2Key.get(this.drakeetBitmap), this.drakeetBitmap);
this.bitmapCache.put(this.bitmap2Key.get(this.kaBitmap), this.kaBitmap);
this.cacheList.add(this.bitmap2Key.get(this.camnterBitmap));
this.cacheList.add(this.bitmap2Key.get(this.drakeetBitmap));
this.cacheList.add(this.bitmap2Key.get(this.kaBitmap));
this.refreshText(this.mCacheDataText, LRU_CACHE_CACHE_DATA_FORMAT, this.cacheList);
}
/**
* Initialize the View of the listener
*/
@Override protected void initListeners() {
this.mGetOne.setOnClickListener(this);
this.mGetTwo.setOnClickListener(this);
this.mGetThree.setOnClickListener(this);
this.mClearRemoveInfo.setOnClickListener(this);
this.mPutFour.setOnClickListener(this);
}
/**
* Initialize the Activity data
*/
@Override protected void initData() {
this.initBitmapAndText();
this.initCache();
}
/**
* Called when a view has been clicked.
*
* @param v The view that was clicked.
*/
@Override public void onClick(View v) {
boolean isGet = false;
String key = null;
switch (v.getId()) {
case R.id.get_one:
isGet = true;
key = this.bitmap2Key.get(this.camnterBitmap);
this.bitmapCache.get(key);
this.mCamnterCountText.setText(
this.getString(R.string.lru_cache_count_format, ++this.camnterCount));
break;
case R.id.get_two:
isGet = true;
key = this.bitmap2Key.get(this.drakeetBitmap);
this.bitmapCache.get(key);
this.mDrakeetCountText.setText(
this.getString(R.string.lru_cache_count_format, ++this.drakeetCount));
break;
case R.id.get_three:
isGet = true;
key = this.bitmap2Key.get(this.kaBitmap);
this.bitmapCache.get(key);
this.mKaCountText.setText(
this.getString(R.string.lru_cache_count_format, ++this.kaCount));
break;
case R.id.put_four:
this.bitmapCache.put(this.bitmap2Key.get(this.peterBitmap), this.peterBitmap);
this.cacheList.add(this.bitmap2Key.get(peterBitmap));
this.refreshText(this.mCacheDataText, LRU_CACHE_CACHE_DATA_FORMAT, this.cacheList);
break;
case R.id.clear_remove_info:
this.mEntryRemovedInfoText.setText(LRU_CACHE_ENTRY_REMOVED_NULL_FORMAT);
break;
}
if (isGet) {
if (this.recentList.contains(key)) {
this.recentList.remove(key);
}
this.recentList.add(0, key);
this.refreshText(this.mRecentInfoText, LRU_CACHE_RECENT_FORMAT, this.recentList);
}
}
private void refreshText(TextView textView, String format, List<String> recentList) {
Iterator<String> iterator = recentList.iterator();
String recentText = "";
while (iterator.hasNext()) {
recentText += iterator.next() + " ";
}
textView.setText(String.format(Locale.getDefault(), format, recentText));
}
}