Question

我在向EditText子类添加自定义绘图命令时遇到问题。我已经覆盖了onDraw方法，但唯一适用于我的命令是canvas.drawColor()

我有这个代码（它仅用于测试和调试目的:)导致空白画布（白色）

public class ClearableEditText extends EditText {

private Paint mPaint;
private Path mPath;

public ClearableEditText(Context context) {
    super(context);
    init();
}

public ClearableEditText(Context context, AttributeSet attrs) {
    super(context, attrs);
    init();
}

public ClearableEditText(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    init();
}

private void init(){
    initPaint();
}

private void initPaint() {
    mPaint = new Paint(getPaint());
    mPaint.setColor(getResources().getColor(R.color.green));
    mPaint.setStyle(Paint.Style.FILL);
    mPaint.setAntiAlias(true);
}

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    DebugLog.d(canvas.getWidth()+"px "+canvas.getHeight()+"px");
    canvas.drawColor(Color.WHITE);
    canvas.drawRect(0, 0, canvas.getWidth(), canvas.getHeight(), mPaint);
    canvas.drawText("text", 0, 30, mPaint);
}
}

有人知道为什么drawRect()和drawText()命令没有做任何事情吗？我期待一些非常有趣的事情：）

在重写编辑文本上绘图不起作用

0 个答案: