我在LinearLayouts背景中使用ShapeDrawable。形状由cod制作,因为我需要动态地为它们分配颜色,具体取决于条件。 这是我的自定义形状
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);
}
}
这个CustomShapeDrawable用作我的布局的StateListDrawable,如下所示:
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);
一切看起来都不错,布局与我想要的颜色形状相同。丑陋的事情发生在屏幕上我得到另一个元素,如键盘或AlertDialog。当我的应用程序再次获得焦点时,布局会因随机线条和工件而变得疯狂。 这就是我的意思:
我可以做些什么来防止或修复这些文物,因为它们看起来很难看。我不知道为什么会发生这种情况。感谢您提供给我的任何帮助。
答案 0 :(得分:1)
没有任何建议,现在解决问题的唯一方法是: - 我在我的活动中创建了一个方法,名为invalidate(),其中对于我想要刷新的所有布局,我添加了layoutId.invalidate() - 每当显示alertdialog时,调用invalidate() - 对于所有EditTexts onFocusChanged或onTextChanged,调用invalidate()
不是一个符合人体工程学的解决方案,但它现在似乎有效。