我有一个自定义视图,像这样:
而我是这样截屏的,
保存位图到SD卡,但保存结果与屏幕上显示的不同。为什么?我做错了什么?
请给我解决这个问题的方向,我尝试搜索问题,但没有找到任何人遇到过这种类型的问题。
屏幕上的视图显示如下: 在截屏时,它会像这样保存:
public class RoundedCornerLayout extends FrameLayout
{
private final static float CORNER_RADIUS = 100.0f;
private Bitmap maskBitmap;
private Paint paint, maskPaint;
private float cornerRadius;
public RoundedCornerLayout(Context context)
{
super(context);
init(context, null, 0);
}
public RoundedCornerLayout(Context context, AttributeSet attrs)
{
super(context, attrs);
init(context, attrs, 0);
}
public RoundedCornerLayout(Context context, AttributeSet attrs, int defStyle)
{
super(context, attrs, defStyle);
init(context, attrs, defStyle);
}
private void init(Context context, AttributeSet attrs, int defStyle)
{
p = new Paint();
p.setFlags(Paint.ANTI_ALIAS_FLAG);
p.setColor(Color.WHITE);
p.setStyle(android.graphics.Paint.Style.STROKE);
p.setStrokeWidth(6);
pp = new Paint();
pp.setColor(Color.parseColor("#686868"));
DisplayMetrics metrics = context.getResources().getDisplayMetrics();
cornerRadius = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, CORNER_RADIUS, metrics);
paint = new Paint(Paint.ANTI_ALIAS_FLAG);
maskPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
maskPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
setWillNotDraw(false);
}
Paint p;
Paint pp;
@Override
public void draw(Canvas canvas)
{
android.util.Log.e("MAYUR", "draw");
canvas.drawCircle(canvas.getWidth() / 2, canvas.getHeight() / 2, canvas.getWidth() / 2, pp);
Bitmap offscreenBitmap = Bitmap.createBitmap(canvas.getWidth(), canvas.getHeight(), Bitmap.Config.ARGB_8888);
Canvas offscreenCanvas = new Canvas(offscreenBitmap);
super.draw(offscreenCanvas);
if (maskBitmap == null)
{
maskBitmap = createMask(canvas.getWidth(), canvas.getHeight());
}
offscreenCanvas.drawBitmap(maskBitmap, 0f, 0f, maskPaint);
canvas.drawBitmap(offscreenBitmap, 0f, 0f, paint);
canvas.drawCircle(canvas.getWidth() / 2, canvas.getHeight() / 2, (canvas.getWidth() - 6) / 2, p);
}
private Bitmap createMask(int width, int height)
{
Bitmap mask = Bitmap.createBitmap(width, height, Bitmap.Config.ALPHA_8);
Canvas canvas = new Canvas(mask);
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setColor(Color.WHITE);
canvas.drawRect(0, 0, width, height, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
canvas.drawRoundRect(new RectF(0, 0, width, height), cornerRadius, cornerRadius, paint);
return mask;
}
}
而我是这样截屏的,
View v1 = ll_contain;
v1.setDrawingCacheEnabled(true);
v1.buildDrawingCache(true);
Bitmap bitmap = Bitmap.createBitmap(v1.getDrawingCache());
v1.setDrawingCacheEnabled(false);
保存位图到SD卡,但保存结果与屏幕上显示的不同。为什么?我做错了什么?
请给我解决这个问题的方向,我尝试搜索问题,但没有找到任何人遇到过这种类型的问题。
屏幕上的视图显示如下: 在截屏时,它会像这样保存: