kenkeiras/mini-cards
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Add a simple, JSON-based serialization mechanism.

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This commit is contained in:
kenkeiras 2017-07-04 02:26:35 +02:00
parent be7eacddb7
commit cb5b087af1
4 changed files with 150 additions and 2 deletions
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93
app/src/main/java/com/codigoparallevar/minicards/PartCanvasView.java
View File

@ -16,6 +16,18 @@ import com.codigoparallevar.minicards.parts.Placeholder;
import com.codigoparallevar.minicards.parts.buttons.RoundButton;
import com.codigoparallevar.minicards.parts.types.Position;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
class PartCanvasView extends View {
@ -35,14 +47,63 @@ class PartCanvasView extends View {
@Nullable
private MotionMode.Type motionMode;
@NonNull
private String name = "default";
private final static float touchTimeForLongTouchInMillis = 500;
public PartCanvasView(Context context) {
super(context);
this.setBackgroundColor(Color.rgb(4, 69, 99));
if (!loadState()){
parts.add(new Placeholder(50, 50, 750, 500));
parts.add(new RoundButton(500, 1200, 80, 100));
}
}
private boolean loadState(){
File filesDir = getContext().getFilesDir();
File file = new File(filesDir + "/" + name);
FileReader fileIn = null;
try {
fileIn = new FileReader(file);
char[] data = new char[(int) file.length()];
fileIn.read(data);
JSONArray jsonParts = new JSONArray(new String(data ));
for (int i = 0; i < jsonParts.length(); i++){
deserializeObject(jsonParts.getJSONObject(i));
}
} catch (IOException e) {
parts.clear();
Log.w("PartCanvasView", e.getMessage());
return false;
} catch (JSONException e) {
parts.clear();
Log.w("PartCanvasView", e.getMessage());
return false;
}
try {
fileIn.close();
} catch (IOException e) {
Log.w("PartCanvasView", e.getMessage());
return false;
}
return true;
}
private void deserializeObject(JSONObject jsonObject) throws JSONException {
String type = jsonObject.getString("_type");
if(type.equals(RoundButton.class.getName())) {
parts.add(RoundButton.deserialize(jsonObject.getJSONObject("_data")));
}
else if (type.equals(Placeholder.class.getName())) {
parts.add(Placeholder.deserialize(jsonObject.getJSONObject("_data")));
}
else {
throw new JSONException("Expected known class, found " + type);
}
}
@Override
public void onDraw(Canvas canvas){
@ -110,6 +171,11 @@ class PartCanvasView extends View {
motionMode = null;
selectedPart = null;
}
try {
saveState();
} catch (IOException e) {
Log.w("PartCanvasView", e.getMessage());
}
break;
case MotionEvent.ACTION_MOVE:
@ -137,6 +203,33 @@ class PartCanvasView extends View {
return true;
}
private void saveState() throws IOException {
File filesDir = getContext().getFilesDir();
FileOutputStream fileOut = new FileOutputStream(filesDir + "/" + name);
byte[] serialized = serializeState();
fileOut.write(serialized);
fileOut.close();
}
private byte[] serializeState() throws IOException {
JSONArray partArray = new JSONArray();
for (Part part : parts) {
JSONObject serializedPart = new JSONObject();
try {
serializedPart.put("_type", part.getClass().getName());
serializedPart.put("_data", part.serialize());
} catch (JSONException e) {
throw new IOException(e.getMessage(), e.getCause());
}
partArray.put(serializedPart);
}
return partArray.toString().getBytes("UTF-8");
}
@Nullable
private MotionMode.Type getMotionMode(boolean canWait) {
if (selectedPart == null){

5
app/src/main/java/com/codigoparallevar/minicards/parts/Part.java
View File

@ -2,6 +2,9 @@ package com.codigoparallevar.minicards.parts;
import android.graphics.Canvas;
import org.json.JSONException;
import org.json.JSONObject;
public interface Part {
int getLeft();
int getRight();
@ -13,4 +16,6 @@ public interface Part {
void move(int x, int y);
void touched();
JSONObject serialize() throws JSONException;
}

24
app/src/main/java/com/codigoparallevar/minicards/parts/Placeholder.java
View File

@ -5,6 +5,9 @@ import android.graphics.Color;
import android.graphics.Paint;
import android.util.Log;
import org.json.JSONException;
import org.json.JSONObject;
public class Placeholder implements Part {
private int _left;
private int _top;
@ -73,4 +76,25 @@ public class Placeholder implements Part {
public void touched() {
Log.d("Placeholder", "Placeholder touched");
}
@Override
public JSONObject serialize() throws JSONException {
JSONObject serialized = new JSONObject();
serialized.put("left", _left);
serialized.put("top", _top);
serialized.put("right", _right);
serialized.put("bottom", _bottom);
return serialized;
}
public static Part deserialize(JSONObject data) throws JSONException {
int left = data.getInt("left");
int top = data.getInt("top");
int right = data.getInt("right");
int bottom = data.getInt("bottom");
return new Placeholder(left, top, right, bottom);
}
}

26
app/src/main/java/com/codigoparallevar/minicards/parts/buttons/RoundButton.java
View File

@ -7,6 +7,9 @@ import android.util.Log;
import com.codigoparallevar.minicards.parts.Part;
import org.json.JSONException;
import org.json.JSONObject;
public class RoundButton implements Part {
@ -66,4 +69,27 @@ public class RoundButton implements Part {
public void touched() {
Log.d("RoundButton", "Round button touched");
}
@Override
public JSONObject serialize() throws JSONException {
JSONObject serialized = new JSONObject();
serialized.put("x_center", _xCenter);
serialized.put("y_center", _yCenter);
serialized.put("inner_radius", _innerRadius);
serialized.put("outer_radius", _outerRadius);
serialized.put("outer_radius_thickness", _outerRadiusThickness);
return serialized;
}
public static Part deserialize(JSONObject data) throws JSONException {
int xCenter = data.getInt("x_center");
int yCenter = data.getInt("y_center");
int innerRadius = data.getInt("inner_radius");
int outerRadius = data.getInt("outer_radius");
return new RoundButton(xCenter, yCenter, innerRadius, outerRadius);
}
}