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Fix issue 641. Flickering screen

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This commit is contained in:
Victor Shcherb 2011-09-18 11:51:04 +02:00
parent f46aadd5c2
commit b5852e72db
1 changed files with 29 additions and 41 deletions
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70
OsmAnd/src/net/osmand/plus/ResourceManager.java
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@ -42,10 +42,13 @@ import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;
import android.content.Context;
import android.content.res.AssetManager;
import android.database.sqlite.SQLiteException;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.DisplayMetrics;
import android.view.WindowManager;
/**
* Resource manager is responsible to work with all resources
@ -111,7 +114,17 @@ public class ResourceManager {
this.context = context;
this.renderer = new MapRenderRepositories(context);
asyncLoadingTiles.start();
resetStoreDirectory();
WindowManager mgr = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE);
DisplayMetrics dm = new DisplayMetrics();
mgr.getDefaultDisplay().getMetrics(dm);
// Only 8 MB (from 16 Mb whole mem) available for images : image 64K * 128 = 8 MB (8 bit), 64 - 16 bit, 32 - 32 bit
// at least 3*9?
float tiles = (dm.widthPixels / 256 + 2) * (dm.heightPixels / 256 + 2) * 3;
System.out.println("Tiles ! " + tiles);
maxImgCacheSize = (int) (tiles) ;
}
public void resetStoreDirectory() {
@ -220,51 +233,26 @@ public class ResourceManager {
}
// introduce cache in order save memory
private int insertString(char[] ar, int offset, String s) {
for (int j = 0; j < s.length(); j++) {
ar[offset++] = s.charAt(j);
}
return offset;
}
protected StringBuilder builder = new StringBuilder(40);
protected char[] tileId = new char[120];
public synchronized String calculateTileId(ITileSource map, int x, int y, int zoom){
if(false){
// performance improve ?
int ind = 0;
String mapName = map == null ? TEMP_SOURCE_TO_LOAD : map.getName();
ind = insertString(tileId, ind, mapName);
if (map instanceof SQLiteTileSource) {
tileId[ind++] = '@';
} else {
tileId[ind++] = '/';
}
ind = insertString(tileId, ind, Integer.toString(zoom));
tileId[ind++] = '/';
ind = insertString(tileId, ind, Integer.toString(x));
tileId[ind++] = '/';
ind = insertString(tileId, ind, Integer.toString(y));
ind = insertString(tileId, ind, map == null ? ".jpg" : map.getTileFormat()); //$NON-NLS-1$
ind = insertString(tileId, ind, ".tile"); //$NON-NLS-1$
return new String(tileId, 0, ind);
public synchronized String calculateTileId(ITileSource map, int x, int y, int zoom) {
builder.setLength(0);
if (map == null) {
builder.append(TEMP_SOURCE_TO_LOAD);
} else {
builder.setLength(0);
if (map == null) {
builder.append(TEMP_SOURCE_TO_LOAD);
} else {
builder.append(map.getName());
}
if (map instanceof SQLiteTileSource) {
builder.append('@');
} else {
builder.append('/');
}
builder.append(zoom).append('/').append(x).append('/').append(y)
.append(map == null ? ".jpg" : map.getTileFormat()).append(".tile"); //$NON-NLS-1$ //$NON-NLS-2$
return builder.toString();
builder.append(map.getName());
}
if (map instanceof SQLiteTileSource) {
builder.append('@');
} else {
builder.append('/');
}
builder.append(zoom).append('/').append(x).append('/').append(y).
append(map == null ? ".jpg" : map.getTileFormat()).append(".tile"); //$NON-NLS-1$ //$NON-NLS-2$
return builder.toString();
}