如何在RectShape或OvalShape中使用Android Canvas ShapeDrawable显示文本？

概述我正在尝试在RectShape中显示Text,它使用ShapeDrawable在Canvas中显示.我能够在这段代码中显示RectShape,但是要查找如何在其上显示String！publicclassCustomDrawableViewextendsView{privateShapeDrawablemDrawable;publicCustomDrawableView(Contextcontext)

我正在尝试在RectShape中显示Text,它使用ShapeDrawable在Canvas中显示.

我能够在这段代码中显示RectShape,但是要查找如何在其上显示String！

  public class CustomDrawableVIEw extends VIEw {  private ShapeDrawable mDrawable;  public CustomDrawableVIEw(Context context) {  super(context);  int x = 10;  int y = 10;  int wIDth = 300;  int height = 50;  mDrawable = new ShapeDrawable(new ovalShape());  mDrawable.getPaint().setcolor(0xff74AC23);  mDrawable.setBounds(x, y, x + wIDth, y + height);  }  protected voID onDraw(Canvas canvas) {  mDrawable.draw(canvas);  }  }

要么

public class ShapeDrawableTest extends VIEw {    ShapeDrawable shapes = new ShapeDrawable();    public ShapeDrawableTest(Context context) {        super(context);    }    public ShapeDrawableTest(Context context, AttributeSet attrs) {        super(context, attrs);    }    @OverrIDe    protected voID onDraw(Canvas canvas) {        super.onDraw(canvas);        shapes.draw(canvas);    }    @OverrIDe    public boolean ontouchEvent(MotionEvent event) {        if (event.getAction() == MotionEvent.ACTION_DOWN) {            int x = (int) event.getX(); // Use getX(int) for multi-finger                                        // gestures            int y = (int) event.getY();            makeShapeDrawable(x, y);            invalIDate();            return (true); // Handled touch event        } else {            return (false); // DID not handle touch event        }    }    private voID makeShapeDrawable(int x, int y) {        int maxWIDth = getWIDth() / 10;        int maxHeight = getHeight() / 10;        Shape shape;        shape = new RectShape();        shapes = new ShapeDrawable(shape);        int wIDth = RandomUtils.randomInt(maxWIDth) + 5;        int height = RandomUtils.randomInt(maxHeight) + 5;        shapes.setBounds(x - wIDth / 2, y - height / 2, x + wIDth / 2, y                + height / 2);        shapes.getPaint().setcolor(color.BLUE);    }}

我尝试的是：

public class CustomDrawableVIEw extends VIEw {    public ShapeDrawable mDrawable;      public CustomDrawableVIEw(Context context) {      super(context);      }        public CustomDrawableVIEw(Context context, AttributeSet attrs) {            super(context, attrs);            int x = 10;          int y = 10;          int wIDth = 300;          int height = 50;          mDrawable = new ShapeDrawable(new ovalShape());          //mDrawable.getPaint().setcolor(0xff74AC23);          final String s = "Hello";          Paint p = new Paint();            Rect bounds = new Rect();            bounds.set(x, y, x + wIDth, y + height);            p.setTextSize(20);            p.setcolor(color.YELLOW);           p.getTextBounds(s, 0, s.length(), bounds);          mDrawable.getPaint().getTextBounds(s, 0, s.length(), bounds);          mDrawable.setBounds(x, y, x + wIDth, y + height);        }//      public CustomDrawableVIEw(Context context, AttributeSet attrs, int defStyle) {//          super(context, attrs, defStyle);////      }        public voID onDraw(Canvas canvas) {      mDrawable.draw(canvas);      }      }

截图：

解决方法:

对我来说最好的选择是创建一个自定义TextDrawable,它可以正确处理如何显示一段文本.然后在onDraw(Canvas c)方法的CustomDrawableVIEw中,可以调用它来显示文本和椭圆.

看一下this answer I wrote recently,因为它包含了如何正确地完成它.

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