LinearLayoutsの背景にShapeDrawableを使用しています。シェイプは、条件に応じて動的に色を割り当てる必要があるため、タラによって作成されます。これが私のカスタムシェイプです
public class CustomShapeDrawable extends ShapeDrawable {
private final Paint fillpaint, strokepaint, linePaint = new Paint();
private int strokeWidth = 3;
private final boolean disableBottomBorder;
public CustomShapeDrawable(Shape s, int fill, int stroke, int strokewidth, boolean disablebottomborder) {
super(s);
fillpaint = new Paint(this.getPaint());
fillpaint.setColor(fill);
strokepaint = new Paint(fillpaint);
strokepaint.setStyle(Paint.Style.STROKE);
strokepaint.setStrokeWidth(strokewidth);
strokepaint.setColor(stroke);
linePaint.setStyle(Paint.Style.STROKE);
linePaint.setStrokeWidth(strokewidth + 1);
linePaint.setColor(fill);
strokeWidth = strokewidth;
disableBottomBorder = disablebottomborder;
}
public CustomShapeDrawable(Shape s, int fill, int stroke, boolean disablebottomborder) {
super(s);
fillpaint = new Paint(this.getPaint());
fillpaint.setColor(fill);
strokepaint = new Paint(fillpaint);
strokepaint.setStyle(Paint.Style.STROKE);
strokepaint.setStrokeWidth(strokeWidth);
strokepaint.setColor(stroke);
linePaint.setStyle(Paint.Style.STROKE);
linePaint.setStrokeWidth(strokeWidth + 1);
linePaint.setColor(fill);
disableBottomBorder = disablebottomborder;
}
@Override
protected void onDraw(Shape shape, Canvas canvas, Paint paint) {
shape.resize(canvas.getClipBounds().right, canvas.getClipBounds().bottom);
shape.draw(canvas, fillpaint);
Matrix matrix = new Matrix();
matrix.setRectToRect(new RectF(0, 0, canvas.getClipBounds().right, canvas.getClipBounds().bottom), new RectF(strokeWidth / 2, strokeWidth / 2, canvas.getClipBounds().right - strokeWidth / 2,
canvas.getClipBounds().bottom - strokeWidth / 2), Matrix.ScaleToFit.FILL);
canvas.concat(matrix);
shape.draw(canvas, strokepaint);
if (disableBottomBorder) {
canvas.drawLine(0 + strokeWidth/2, shape.getHeight(), shape.getWidth() - strokeWidth/2, shape.getHeight(), linePaint);
}
}
このCustomShapeDrawableは、次のようなレイアウトのStateListDrawableとして使用されます。
RoundRectShape shapeTopCorners = new RoundRectShape(new float[] { 10, 10, 10, 10, 0, 0, 0, 0 }, null, null);
ShapeDrawable shapeTopCornersNormal =
new CustomShapeDrawable(shapeTopCorners, Global.getFleet().getSkins().getBackgroundcolour(), context.getResources().getColor(R.color.item_line), true);
ShapeDrawable shapeTopCornersPressed =
new CustomShapeDrawable(shapeTopCorners, context.getResources().getColor(R.color.menu_grey), context.getResources().getColor(R.color.item_line), true);
StateListDrawable stateTopCornersRounded = new StateListDrawable();
stateTopCornersRounded.addState(new int[] { android.R.attr.state_focused }, shapeTopCornersPressed);
stateTopCornersRounded.addState(new int[] { android.R.attr.state_pressed }, shapeTopCornersPressed);
stateTopCornersRounded.addState(new int[] {}, shapeTopCornersNormal);
すべてがうまく見えます、レイアウトは私が望む色と同じ形をしています。画面上でキーボードやAlertDialogなどの別の要素を取得すると、醜いことが起こります。私のアプリが再び焦点を合わせると、レイアウトはランダムな線とアーティファクトで狂ってしまいます。これが私が意味することです:
見た目が醜いので、このアーティファクトを防止または修正するにはどうすればよいですか。そもそもなぜこれが起こるのか分かりません。あなたが私に提供するかもしれないどんな助けにも感謝します。