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Bienvenue les gars, je problème avec vue sur dessin personnalisé (empreintes digitales) J'utilisedessin personnalisé gomme à effacer vue
drawPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
Le problème est-il dessine des lignes noires, puis il supprime le dessin. Comment désactiver cette ligne noire et lui permettre de transparence
Mon code est:
import android.annotation.SuppressLint;
import android.graphics.PorterDuff;
import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.util.TypedValue;
import android.view.View;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PorterDuffXfermode;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ColorDrawable;
import android.view.MotionEvent;
public class DrawingView extends View {
// drawing path
private Path drawPath;
// drawing and canvas paint
private Paint drawPaint, canvasPaint, drawCirclePaint;
// initial color
public int paintColor = Color.BLACK;
// canvas
private Canvas drawCanvas;
// canvas bitmap
private Bitmap canvasBitmap;
private float brushSize;
private boolean startedEditing = false;
private int width, height;
public boolean isLined = false;
public DrawingView(Context context, AttributeSet attrs) {
super(context, attrs);
setupDrawing();
}
public boolean isStartedEditing() {
return startedEditing;
}
public void setBackColor(int color) {
this.setBackgroundColor(color);
}
public int getBackColor() {
int colorID;
try {
ColorDrawable color = (ColorDrawable) this.getBackground();
colorID = color.getColor();
} catch (Exception e) {
colorID = Color.WHITE;
}
return colorID;
}
public void setupDrawing() {
brushSize = 4;
drawPath = new Path();
drawPaint = new Paint();
drawPaint.setColor(paintColor);
drawPaint.setAntiAlias(true);
drawPaint.setStyle(Paint.Style.STROKE);
drawPaint.setStrokeJoin(Paint.Join.ROUND);
drawPaint.setStrokeCap(Paint.Cap.ROUND);
drawPaint.setStrokeWidth(brushSize);
drawCirclePaint = new Paint();
drawCirclePaint.setColor(paintColor);
drawCirclePaint.setStyle(Paint.Style.FILL);
drawCirclePaint.setStrokeJoin(Paint.Join.ROUND);
drawCirclePaint.setStrokeCap(Paint.Cap.ROUND);
drawCirclePaint.setStrokeWidth(brushSize/4);
canvasPaint = new Paint(Paint.DITHER_FLAG);
}
public void setBrushSize(float newSize) {
float pixelAmount = TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, newSize, getResources()
.getDisplayMetrics());
brushSize = pixelAmount;
drawPaint.setStrokeWidth(brushSize);
}
public void setBrushColor(int newColor) {
drawPaint.setColor(newColor);
drawCirclePaint.setColor(newColor);
}
public int getBrushColor() {
return (drawPaint.getColor() == Color.WHITE) ? Color.BLACK : drawPaint
.getColor();
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
canvasBitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
drawCanvas = new Canvas(canvasBitmap);
width = w;
height = h;
// setLinedBackground();
}
@SuppressLint("NewApi")
public void setLinedBackground(boolean setOrRemove) {
if (setOrRemove) {
isLined = true;
// Lined Background
// Initialize lined background
Bitmap linedBackground = Bitmap.createBitmap(width, height,
Bitmap.Config.ARGB_8888);
Canvas linedBackgroundCanvas = new Canvas(linedBackground);
// Set back white color
linedBackgroundCanvas.drawColor(Color.WHITE);
final float scale = DrawingView.this.getResources()
.getDisplayMetrics().density;
int pixels = (int) (50 * scale + 0.5f);
for (int i = 1, j = 0; j < drawCanvas.getHeight()/(pixels); i++, j++) {
Paint myPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
myPaint.setStrokeWidth((int) (1 * scale + 0.5f));
myPaint.setColor(Color.argb(60, 168, 168, 168));
linedBackgroundCanvas.drawLine(5, i * pixels,
drawCanvas.getWidth() - 5, i * pixels, myPaint);
}
BitmapDrawable ob = new BitmapDrawable(
DrawingView.this.getResources(), linedBackground);
if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.JELLY_BEAN) {
this.setBackgroundDrawable(ob);
} else {
this.setBackground(ob);
}
} else {
isLined = false;
// Lined Background
// Initialize lined background
setBackColor(Color.WHITE);
}
}
@Override
protected void onDraw(Canvas canvas) {
canvas.drawBitmap(canvasBitmap, 0, 0, canvasPaint);
canvas.drawPath(drawPath, drawPaint);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
AddDrawingNote.moreLayout.setVisibility(View.GONE);
startedEditing = true;
float touchX = event.getX();
float touchY = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
drawCanvas.drawPoint(touchX, touchY, drawCirclePaint);
drawPath.moveTo(touchX, touchY);
break;
case MotionEvent.ACTION_MOVE:
drawPath.lineTo(touchX, touchY);
break;
case MotionEvent.ACTION_UP:
drawCanvas.drawPath(drawPath, drawPaint);
drawPath.reset();
break;
default:
return false;
}
invalidate();
return true;
}
public void setErase() {
drawPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
}
}
et xml
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:background="@drawable/drawingnote_main_layout_bg"
android:orientation="vertical"
android:weightSum="100" >
<ImageView
android:id="@+id/drawingView_back"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:layout_margin="1dp"
android:background="#FFFF00"/>
<ibrahim.radwan.qnotes.DrawingView
android:id="@+id/add_drawing_note_drawing"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:layout_margin="1dp"
android:background="#00ffffff" />
</RelativeLayout>
Toutes les idées :)