kenkeiras/mini-cards
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Add versioning to the serialized cards.

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kenkeiras 2018-01-18 22:45:07 +01:00
parent 0171a56d6e
commit 3f8267e5ef
1 changed files with 22 additions and 3 deletions
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25
app/src/main/java/com/codigoparallevar/minicards/CanvasView.java
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@ -34,6 +34,7 @@ import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.ObjectStreamException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
@ -86,6 +87,7 @@ class CanvasView extends View implements PartGrid {
this.setBackgroundColor(Color.rgb(4, 69, 99));
if (!loadState()){
// Sprinkle some elements around if no state is found
parts.add(new Placeholder(this, 50, 50, 750, 500));
parts.add(new ColorBox(this, 600, 1000, 700, 1100));
parts.add(new RoundButton(this, 300, 1200, 80, 100));
@ -102,7 +104,16 @@ class CanvasView extends View implements PartGrid {
fileIn = new FileReader(file);
char[] data = new char[(int) file.length()];
fileIn.read(data);
JSONArray jsonParts = new JSONArray(new String(data ));
JSONObject state = new JSONObject(new String(data));
JSONObject metadata = state.getJSONObject("metadata");
int version = metadata.getInt("version");
if (version != 0) {
return false;
}
// If version 0 -> known structure
JSONArray jsonParts = state.getJSONArray("parts");
for (int i = 0; i < jsonParts.length(); i++){
connections.addAll(deserializeObject(jsonParts.getJSONObject(i)));
}
@ -349,7 +360,7 @@ class CanvasView extends View implements PartGrid {
}
private byte[] serializeState() throws IOException {
JSONArray partArray = new JSONArray();
final JSONArray partArray = new JSONArray();
for (Part part : parts) {
JSONObject serializedPart = new JSONObject();
try {
@ -362,7 +373,15 @@ class CanvasView extends View implements PartGrid {
partArray.put(serializedPart);
}
return partArray.toString().getBytes("UTF-8");
final JSONObject metadataObject = new JSONObject(new HashMap<String, Object>(){{
put("version", 0);
}});
final JSONObject state = new JSONObject(new HashMap<String, Object>(){{
put("metadata", metadataObject);
put("parts", partArray);
}});
return state.toString().getBytes("UTF-8");
}
@Nullable